File: macos-setup.sh

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wireshark 4.6.1-2
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file content (4224 lines) | stat: -rwxr-xr-x 155,436 bytes
#!/bin/bash
# Setup development environment on macOS (tested with 10.6.8 and Xcode
# 3.2.6 and with 10.12.4 and Xcode 8.3).
#
# Copyright 2011 Michael Tuexen, Joerg Mayer, Guy Harris (see AUTHORS file)
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 1998 Gerald Combs
#
# SPDX-License-Identifier: GPL-2.0-or-later

set -e

shopt -s extglob

#
# Get the major version of Darwin, so we can check the major macOS
# version.
#
DARWIN_MAJOR_VERSION=$(uname -r | sed 's/\([0-9]*\).*/\1/')

#
# The minimum supported version of Qt is 5.15, so the minimum supported version
# of macOS is OS X 10.13 (High Sierra), aka Darwin 17.0.
#
if [[ $DARWIN_MAJOR_VERSION -lt 17 ]]; then
    echo "This script does not support any versions of macOS before High Sierra" 1>&2
    exit 1
fi

#
# Get the processor architecture of Darwin. Currently supported: arm, i386
#
DARWIN_PROCESSOR_ARCH=$(uname -m)

if [ "$DARWIN_PROCESSOR_ARCH" != "arm64" ] && [ "$DARWIN_PROCESSOR_ARCH" != "x86_64" ]; then
    echo "This script does not support this processor architecture" 1>&2
    exit 1
fi

#
# Versions of packages to download and install.
#

#
# We use curl, but older versions of curl in older macOS releases can't
# handle some sites - including the xz site. We also use the --fail-with-body
# flag, which was added in curl 7.76.0.
#
# If the version of curl in the system is older than 7.76.0, download
# curl and install it.
#
current_curl_version=$( curl --version | sed -n 's/curl \([0-9.]*\) .*/\1/p' )
current_curl_major_version="$( expr "$current_curl_version" : '\([0-9][0-9]*\).*' )"
current_curl_minor_version="$(expr "$current_curl_version" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
if [[ $current_curl_major_version -lt 7 ||
     ($current_curl_major_version -eq 7 &&
      $current_curl_minor_version -lt 54) ]]; then
    CURL_VERSION=${CURL_VERSION-7.88.1}
fi

#
# Some packages need xz to unpack their current source.
# XXX: tar, since macOS 10.9, can uncompress xz'ed tarballs,
# so perhaps we could get rid of this now?
#
# DO NOT UPDATE THIS TO A COMPROMISED VERSION; see
#
#    https://www.openwall.com/lists/oss-security/2024/03/29/4
#
#    https://access.redhat.com/security/cve/CVE-2024-3094
#
#    https://nvd.nist.gov/vuln/detail/CVE-2024-3094
#
XZ_VERSION=5.2.5

#
# CMake is required to do the build - and to build some of the
# dependencies.
#
CMAKE_VERSION=${CMAKE_VERSION-3.21.4}

#
# Ninja isn't required, as make is provided with Xcode, but it is
# claimed to build faster than make.
# Comment it out if you don't want it.
#
NINJA_VERSION=${NINJA_VERSION-1.12.1}
NINJA_SHA256=89a287444b5b3e98f88a945afa50ce937b8ffd1dcc59c555ad9b1baf855298c9

#
# The following libraries and tools are required even to build only TShark.
#
GETTEXT_VERSION=0.22.5
GLIB_VERSION=2.80.3
if [ "$GLIB_VERSION" ]; then
    GLIB_MAJOR_VERSION="$( expr $GLIB_VERSION : '\([0-9][0-9]*\).*' )"
    GLIB_MINOR_VERSION="$( expr $GLIB_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
#     Unused?
#     GLIB_DOTDOT_VERSION="$( expr $GLIB_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
#     GLIB_MAJOR_MINOR_VERSION=$GLIB_MAJOR_VERSION.$GLIB_MINOR_VERSION
#     GLIB_MAJOR_MINOR_DOTDOT_VERSION=$GLIB_MAJOR_VERSION.$GLIB_MINOR_VERSION.$GLIB_DOTDOT_VERSION
fi
PKG_CONFIG_VERSION=0.29.2
#
# libgpg-error is required for libgcrypt.
#
LIBGPG_ERROR_VERSION=1.51
#
# libgcrypt is required.
#
LIBGCRYPT_VERSION=1.11.0
#
# libpcre2 is required.
#
PCRE2_VERSION=10.44

#
# One or more of the following libraries are required to build Wireshark.
#
# To override the version of Qt call the script with some of the variables
# set to the new values. Setting the variable to empty will disable building
# the toolkit and will uninstall any version previously installed by the
# script, e.g.
# "QT_VERSION=5.10.1 ./macos-setup.sh"
# will build and install with QT 5.10.1.
#
QT_VERSION=${QT_VERSION-6.2.4}

if [ "$QT_VERSION" ]; then
    QT_MAJOR_VERSION="$( expr "$QT_VERSION" : '\([0-9][0-9]*\).*' )"
    QT_MINOR_VERSION="$( expr "$QT_VERSION" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
    QT_DOTDOT_VERSION="$( expr "$QT_VERSION" : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
    QT_MAJOR_MINOR_VERSION=$QT_MAJOR_VERSION.$QT_MINOR_VERSION
    QT_MAJOR_MINOR_DOTDOT_VERSION=$QT_MAJOR_VERSION.$QT_MINOR_VERSION.$QT_DOTDOT_VERSION
fi

#
# The following libraries are optional.
# Comment them out if you don't want them, but note that some of
# the optional libraries are required by other optional libraries.
#
LIBSMI_VERSION=0.4.8
GNUTLS_VERSION=3.8.10
GNUTLS_SHA256=db7fab7cce791e7727ebbef2334301c821d79a550ec55c9ef096b610b03eb6b7
if [ "$GNUTLS_VERSION" ]; then
    #
    # We'll be building GnuTLS, so we may need some additional libraries.
    # We assume GnuTLS can work with Nettle; newer versions *only* use
    # Nettle, not libgcrypt.
    #
    GNUTLS_MAJOR_VERSION="$( expr $GNUTLS_VERSION : '\([0-9][0-9]*\).*' )"
    GNUTLS_MINOR_VERSION="$( expr $GNUTLS_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
    NETTLE_VERSION=3.10.2

    #
    # And, in turn, Nettle requires GMP.
    #
    GMP_VERSION=6.3.0

    #
    # And p11-kit
    P11KIT_VERSION=0.25.5

    # Which requires libtasn1
    LIBTASN1_VERSION=4.20.0
fi
# lua_bitop.c has been ported to 5.3 and 5.4 so use the latest release.
# We may still need to check for compatibility issues (we'd want Lua
# scripts to work with 5.1 through 5.4, as long as they only use Lua
# features present in all versions)
LUA_VERSION=5.4.6
SNAPPY_VERSION=1.2.1
ZSTD_VERSION=1.5.6
ZLIBNG_VERSION=2.1.6
LIBXML2_VERSION=2.11.9 # Matches vcpkg
LIBXML2_SHA256=780157a1efdb57188ec474dca87acaee67a3a839c2525b2214d318228451809f
LZ4_VERSION=1.10.0
SBC_VERSION=2.0
CARES_VERSION=1.31.0
LIBSSH_VERSION=0.11.3
# mmdbresolve
MAXMINDDB_VERSION=1.9.1
NGHTTP2_VERSION=1.62.1
NGHTTP3_VERSION=1.1.0
SPANDSP_VERSION=0.0.6
SPEEXDSP_VERSION=1.2.1
if [ "$SPANDSP_VERSION" ]; then
    #
    # SpanDSP depends on libtiff.
    #
    LIBTIFF_VERSION=3.8.1
fi
BCG729_VERSION=1.1.1
# libilbc 3.0.0 & later link with absiel, which is released under Apache 2.0
ILBC_VERSION=2.0.2
OPENCORE_AMR_VERSION=0.1.6
OPENCORE_AMR_SHA256=483eb4061088e2b34b358e47540b5d495a96cd468e361050fae615b1809dc4a1
OPUS_VERSION=1.4

# Falco libs (libsinsp and libscap) and their dependencies. Unset for now.
FALCO_LIBS_VERSION=0.18.1
if [ "$FALCO_LIBS_VERSION" ] ; then
    FALCO_LIBS_SHA256=1812e8236c4cb51d3fe5dd066d71be99f25da7ed22d8feeeebeed09bdc26325f
    JSONCPP_VERSION=1.9.5
    ONETBB_VERSION=2021.11.0
    # 2023-06-01 and later require Abseil.
    RE2_VERSION=2022-06-01
fi

#
# Is /usr/bin/python3 a working version of Python?  It may be, as it
# might be a wrapper that runs the Python 3 that's part of Xcode.
#
if /usr/bin/python3 --version >/dev/null 2>&1
then
    #
    # Yes - don't bother installing Python 3 from elsewhere
    #
    :
else
    #
    # No - install a Python package.
    #
    PYTHON3_VERSION=3.12.1
fi
BROTLI_VERSION=1.0.9
# minizip/minizipng
MINIZIPNG_VERSION=4.0.7
ZLIB_VERSION=1.3
# Uncomment to enable automatic updates using Sparkle
#SPARKLE_VERSION=2.2.2

#
# Asciidoctor is required to build the documentation.
#
# As the Asciidoctor Homebrew formula shows, managing all of the various
# dependencies can become quite hairy:
# https://github.com/Homebrew/homebrew-core/blob/master/Formula/a/asciidoctor.rb
# Maybe we should install a JRE and use AsciidoctorJ instead?
ASCIIDOCTOR_VERSION=${ASCIIDOCTOR_VERSION-2.0.23}
ASCIIDOCTORPDF_VERSION=${ASCIIDOCTORPDF_VERSION-1.6.1}
# css_parser 1.13 and later require Ruby 2.7

CSS_PARSER_VERSION=${CSS_PARSER_VERSION-1.12.0}
#
# GNU autotools.  They're not supplied with the macOS versions we
# support, and we currently use them for minizip.
#
M4_VERSION=1.4.19
AUTOCONF_VERSION=2.72
AUTOMAKE_VERSION=1.17
LIBTOOL_VERSION=2.5.4

install_curl() {
    if [ "$CURL_VERSION" ] && [ ! -f "curl-$CURL_VERSION-done" ] ; then
        echo "Downloading, building, and installing curl:"
        [ -f "curl-$CURL_VERSION.tar.bz2" ] || curl --fail --location --remote-name "https://curl.haxx.se/download/curl-$CURL_VERSION.tar.bz2"
        $no_build && echo "Skipping installation" && return
        bzcat "curl-$CURL_VERSION.tar.bz2" | tar xf -
        cd "curl-$CURL_VERSION"
        ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch "curl-$CURL_VERSION-done"
    fi
}

uninstall_curl() {
    if [ -n "$installed_curl_version" ] ; then
        echo "Uninstalling curl:"
        cd "curl-$installed_curl_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "curl-$installed_curl_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "curl-$installed_curl_version"
            rm -rf "curl-$installed_curl_version.tar.bz2"
        fi

        installed_curl_version=""
    fi
}

install_xz() {
    if [ "$XZ_VERSION" ] && [ ! -f xz-$XZ_VERSION-done ] ; then
        echo "Downloading, building, and installing xz:"
        [ -f xz-$XZ_VERSION.tar.bz2 ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://tukaani.org/xz/xz-$XZ_VERSION.tar.bz2
        $no_build && echo "Skipping installation" && return
        bzcat xz-$XZ_VERSION.tar.bz2 | tar xf -
        cd xz-$XZ_VERSION
        #
        # This builds and installs liblzma, which libxml2 uses, and
        # Wireshark uses libxml2, so we need to build this with
        # all the minimum-deployment-version and SDK stuff.
        #
        CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch xz-$XZ_VERSION-done
    fi
}

uninstall_xz() {
    if [ -n "$installed_xz_version" ] ; then
        echo "Uninstalling xz:"
        cd "xz-$installed_xz_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "xz-$installed_xz_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "xz-$installed_xz_version"
            rm -rf "xz-$installed_xz_version.tar.bz2"
        fi

        installed_xz_version=""
    fi
}

uninstall_lzip() {
    if [ -n "$installed_lzip_version" ] ; then
        echo "Uninstalling lzip:"
        cd "lzip-$installed_lzip_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "lzip-$installed_lzip_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "lzip-$installed_lzip_version"
            rm -rf "lzip-$installed_lzip_version.tar.gz"
        fi

        installed_lzip_version=""
    fi
}

uninstall_pcre() {
    if [ -n "$installed_pcre_version" ] ; then
        echo "Uninstalling leftover pcre:"
        cd "pcre-$installed_pcre_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "pcre-$installed_pcre_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "pcre-$installed_pcre_version"
            rm -rf "pcre-$installed_pcre_version.tar.bz2"
        fi

        installed_pcre_version=""
    fi
}

install_pcre2() {
    if [ "$PCRE2_VERSION" ] && [ ! -f "pcre2-$PCRE2_VERSION-done" ] ; then
        echo "Downloading, building, and installing pcre2:"
        [ -f "pcre2-$PCRE2_VERSION.tar.bz2" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" "https://github.com/PhilipHazel/pcre2/releases/download/pcre2-$PCRE2_VERSION/pcre2-$PCRE2_VERSION.tar.bz2"
        $no_build && echo "Skipping installation" && return
        bzcat "pcre2-$PCRE2_VERSION.tar.bz2" | tar xf -
        cd "pcre2-$PCRE2_VERSION"
        mkdir build_dir
        cd build_dir
        # https://github.com/Homebrew/homebrew-core/blob/master/Formula/pcre2.rb
        # https://github.com/microsoft/vcpkg/blob/master/ports/pcre2/portfile.cmake
        "${DO_CMAKE[@]}" -DBUILD_STATIC_LIBS=OFF -DBUILD_SHARED_LIBS=ON -DPCRE2_SUPPORT_JIT=ON -DPCRE2_SUPPORT_UNICODE=ON ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch "pcre2-$PCRE2_VERSION-done"
    fi
}

uninstall_pcre2() {
    if [ -n "$installed_pcre2_version" ] && [ -s "pcre2-$installed_pcre2_version/build_dir/install_manifest.txt" ] ; then
        echo "Uninstalling pcre2:"
        # PCRE2 10.39 installs pcre2unicode.3 twice, so this will return an error.
        while read -r ; do $DO_RM -f -v "$REPLY" ; done < <(cat "pcre2-$installed_pcre2_version/build_dir/install_manifest.txt"; echo)
        rm "pcre2-$installed_pcre2_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "pcre2-$installed_pcre2_version"
            rm -rf "pcre2-$installed_pcre2_version.tar.bz2"
        fi

        installed_pcre2_version=""
    fi
}

install_m4() {
    if [ "$M4_VERSION" -a ! -f m4-$M4_VERSION-done ] ; then
        echo "Downloading, building and installing GNU m4..."
        [ -f m4-$M4_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://ftp.gnu.org/gnu/m4/m4-$M4_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat m4-$M4_VERSION.tar.xz | tar xf -
        cd m4-$M4_VERSION
        ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch m4-$M4_VERSION-done
    fi
}

uninstall_m4() {
    if [ -n "$installed_m4_version" ] ; then
        #
        # autoconf depends on this, so uninstall it.
        #
        uninstall_autoconf "$@"

        echo "Uninstalling GNU m4:"
        cd m4-$installed_m4_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm m4-$installed_m4_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf m4-$installed_m4_version
            rm -rf m4-$installed_m4_version.tar.xz
        fi

        installed_m4_version=""
    fi
}

install_autoconf() {
    if [ "$AUTOCONF_VERSION" -a ! -f autoconf-$AUTOCONF_VERSION-done ] ; then
        echo "Downloading, building and installing GNU autoconf..."
        [ -f autoconf-$AUTOCONF_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://ftp.gnu.org/gnu/autoconf/autoconf-$AUTOCONF_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat autoconf-$AUTOCONF_VERSION.tar.xz | tar xf -
        cd autoconf-$AUTOCONF_VERSION
        ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch autoconf-$AUTOCONF_VERSION-done
    fi
}

uninstall_autoconf() {
    if [ -n "$installed_autoconf_version" ] ; then
        #
        # automake and libtool depend on this, so uninstall them.
        #
        uninstall_libtool "$@"
        uninstall_automake "$@"

        echo "Uninstalling GNU autoconf:"
        cd autoconf-$installed_autoconf_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm autoconf-$installed_autoconf_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf autoconf-$installed_autoconf_version
            rm -rf autoconf-$installed_autoconf_version.tar.xz
        fi

        installed_autoconf_version=""
    fi
}

install_automake() {
    if [ "$AUTOMAKE_VERSION" -a ! -f automake-$AUTOMAKE_VERSION-done ] ; then
        echo "Downloading, building and installing GNU automake..."
        [ -f automake-$AUTOMAKE_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://ftp.gnu.org/gnu/automake/automake-$AUTOMAKE_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat automake-$AUTOMAKE_VERSION.tar.xz | tar xf -
        cd automake-$AUTOMAKE_VERSION
        ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch automake-$AUTOMAKE_VERSION-done
    fi
}

uninstall_automake() {
    if [ -n "$installed_automake_version" ] ; then
        #
        # libtool depends on this(?), so uninstall it.
        #
        uninstall_libtool "$@"

        echo "Uninstalling GNU automake:"
        cd automake-$installed_automake_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm automake-$installed_automake_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf automake-$installed_automake_version
            rm -rf automake-$installed_automake_version.tar.xz
        fi

        installed_automake_version=""
    fi
}

install_libtool() {
    if [ "$LIBTOOL_VERSION" -a ! -f libtool-$LIBTOOL_VERSION-done ] ; then
        echo "Downloading, building and installing GNU libtool..."
        [ -f libtool-$LIBTOOL_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://ftp.gnu.org/gnu/libtool/libtool-$LIBTOOL_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat libtool-$LIBTOOL_VERSION.tar.xz | tar xf -
        cd libtool-$LIBTOOL_VERSION
        ./configure "${CONFIGURE_OPTS[@]}" --program-prefix=g
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
       touch libtool-$LIBTOOL_VERSION-done
    fi
}

uninstall_libtool() {
    if [ -n "$installed_libtool_version" ] ; then
        echo "Uninstalling GNU libtool:"
        cd libtool-$installed_libtool_version
        $DO_MV "$installation_prefix/bin/glibtool" "$installation_prefix/bin/libtool"
        $DO_MV "$installation_prefix/bin/glibtoolize" "$installation_prefix/bin/libtoolize"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm libtool-$installed_libtool_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf libtool-$installed_libtool_version
            rm -rf libtool-$installed_libtool_version.tar.xz
        fi

        installed_libtool_version=""
    fi
}

install_ninja() {
    if [ "$NINJA_VERSION" ] && [ ! -f "ninja-$NINJA_VERSION-done" ] ; then
        echo "Downloading and installing Ninja:"
        #
        # Download the zipball, unpack it, and move the binary to
        # $installation_prefix/bin.
        #
        [ -f "ninja-mac-v$NINJA_VERSION.zip" ] || curl "${CURL_LOCAL_NAME_OPTS[@]}" "ninja-mac-v$NINJA_VERSION.zip" https://github.com/ninja-build/ninja/releases/download/v$NINJA_VERSION/ninja-mac.zip
        echo "$NINJA_SHA256  ninja-mac-v$NINJA_VERSION.zip" | shasum --algorithm 256 --check
        $no_build && echo "Skipping installation" && return
        unzip "ninja-mac-v$NINJA_VERSION.zip"
        sudo mv ninja "$installation_prefix/bin"
        touch "ninja-$NINJA_VERSION-done"
    fi
}

uninstall_ninja() {
    if [ -n "$installed_ninja_version" ]; then
        echo "Uninstalling Ninja:"
        $DO_RM "$installation_prefix/bin/ninja"
        rm "ninja-$installed_ninja_version-done"
        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            rm -f "ninja-mac-v$installed_ninja_version.zip"
        fi

        installed_ninja_version=""
    fi
}

install_asciidoctor() {
    if [ ! -f asciidoctor-${ASCIIDOCTOR_VERSION}-done ]; then
        echo "Downloading and installing Asciidoctor:"
        $no_build && echo "Skipping installation" && return
        sudo gem install -V asciidoctor --version "=${ASCIIDOCTOR_VERSION}"
        touch asciidoctor-${ASCIIDOCTOR_VERSION}-done
    fi
}

uninstall_asciidoctor() {
    if [ -n "$installed_asciidoctor_version" ]; then
        echo "Uninstalling Asciidoctor:"
        sudo gem uninstall -V asciidoctor --version "=${installed_asciidoctor_version}"
        rm asciidoctor-$installed_asciidoctor_version-done

        ##if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version,
            # whatever it might happen to be called.
            #
        ##    rm -f asciidoctor-$installed_asciidoctor_version
        ##fi
        installed_asciidoctor_version=""
    fi
}

install_asciidoctorpdf() {
    if [ ! -f asciidoctorpdf-${ASCIIDOCTORPDF_VERSION}-done ]; then
        ## XXX gem does not track dependencies that are installed for asciidoctor-pdf
        ## record them for uninstallation
        ## ttfunk, pdf-core, prawn, prawn-table, Ascii85, ruby-rc4, hashery, afm, pdf-reader, prawn-templates, public_suffix, addressable, css_parser, prawn-svg, prawn-icon, safe_yaml, thread_safe, polyglot, treetop, asciidoctor-pdf
        echo "Downloading and installing Asciidoctor-pdf:"
        $no_build && echo "Skipping installation" && return
        sudo gem install -V css_parser --version "=${CSS_PARSER_VERSION}"
        sudo gem install -V asciidoctor-pdf --version "=${ASCIIDOCTORPDF_VERSION}"
        touch asciidoctorpdf-${ASCIIDOCTORPDF_VERSION}-done
    fi
}

uninstall_asciidoctorpdf() {
    if [ -n "$installed_asciidoctorpdf_version" ]; then
        echo "Uninstalling Asciidoctor:"
        sudo gem uninstall -V asciidoctor-pdf --version "=${installed_asciidoctorpdf_version}"
        ## XXX uninstall dependencies
        rm asciidoctorpdf-$installed_asciidoctorpdf_version-done

        ##if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version,
            # whatever it might happen to be called.
            #
        ##    rm -f asciidoctorpdf-$installed_asciidoctorpdf_version
        ##fi
        installed_asciidoctorpdf_version=""
    fi
}

install_cmake() {
    if [ ! -f cmake-$CMAKE_VERSION-done ]; then
        echo "Downloading and installing CMake:"
        $no_build && echo "Skipping installation" && return
        CMAKE_MAJOR_VERSION="$( expr "$CMAKE_VERSION" : '\([0-9][0-9]*\).*' )"
        CMAKE_MINOR_VERSION="$( expr "$CMAKE_VERSION" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
        CMAKE_MAJOR_MINOR_VERSION=$CMAKE_MAJOR_VERSION.$CMAKE_MINOR_VERSION

        #
        # NOTE: the "64" in "Darwin64" doesn't mean "64-bit-only"; the
        # package in question supports both 32-bit and 64-bit x86.
        #
        case "$CMAKE_MAJOR_VERSION" in

        0|1|2)
            echo "CMake $CMAKE_VERSION" is too old 1>&2
            ;;

        3)
            #
            # Download the DMG and do a drag install, where "drag" means
            # "mv".
            #
            # 3.1.1 to 3.19.1 have a Darwin-x86_64 DMG.
            # 3.19.2 has a macos-universal DMG for 10.10 and later
            # 3.19.3 and later have a macos-universal DMG for 10.13 and later,
            # and a macos10.10-universal DMG for 10.10 and later.
            #
            if [ "$CMAKE_MINOR_VERSION" -lt 10 ]; then
                echo "CMake $CMAKE_VERSION" is too old 1>&2
            elif [ "$CMAKE_MINOR_VERSION" -lt 19 -o \
                 "$CMAKE_VERSION" = 3.19.0 -o \
                 "$CMAKE_VERSION" = 3.19.1 ]; then
                type="Darwin-x86_64"
            elif [ "$CMAKE_VERSION" = 3.19.2 -o \
                 "$DARWIN_MAJOR_VERSION" -ge 17 ]; then
                type="macos-universal"
            else
                type="macos10.0-universal"
            fi
            [ -f cmake-$CMAKE_VERSION-$type.dmg ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://cmake.org/files/v$CMAKE_MAJOR_MINOR_VERSION/cmake-$CMAKE_VERSION-$type.dmg
            $no_build && echo "Skipping installation" && return
            sudo hdiutil attach cmake-$CMAKE_VERSION-$type.dmg
            sudo ditto /Volumes/cmake-$CMAKE_VERSION-$type/CMake.app /Applications/CMake.app

            #
            # Plant the appropriate symbolic links in $installation_prefix/bin.
            # It's a drag-install, so there's no installer to make them,
            # and the CMake code to put them in place is lame, as
            #
            #    1) it defaults to /usr/bin, not $installation_prefix/bin;
            #    2) it doesn't request the necessary root privileges;
            #    3) it can't be run from the command line;
            #
            # so we do it ourselves.
            #
            for i in ccmake cmake cmake-gui cmakexbuild cpack ctest
            do
                sudo ln -s /Applications/CMake.app/Contents/bin/$i "$installation_prefix/bin/$i"
            done
            sudo hdiutil detach /Volumes/cmake-$CMAKE_VERSION-$type
            ;;

        *)
            ;;
        esac
        touch cmake-$CMAKE_VERSION-done
    fi
}

uninstall_cmake() {
    if [ -n "$installed_cmake_version" ]; then
        echo "Uninstalling CMake:"
        installed_cmake_major_version="$( expr "$installed_cmake_version" : '\([0-9][0-9]*\).*' )"
        case "$installed_cmake_major_version" in

        0|1|2)
            echo "CMake $installed_cmake_version" is too old 1>&2
            ;;

        3)
            sudo rm -rf /Applications/CMake.app
            for i in ccmake cmake cmake-gui cmakexbuild cpack ctest
            do
                sudo rm -f "$installation_prefix/bin/$i"
            done
            rm cmake-$installed_cmake_version-done
            ;;
        esac

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version,
            # whatever it might happen to be called.
            #
            rm -f cmake-$installed_cmake_version-Darwin-x86_64.dmg
            rm -f cmake-$installed_cmake_version-macos-universal.dmg
            rm -f cmake-$installed_cmake_version-macos10.0-universal.dmg
        fi

        installed_cmake_version=""
    fi
}

install_meson() {
    #
    # Install Meson with pip3 if we don't have it already.
    #
    if $MESON --version >/dev/null 2>&1
    then
        # We have it.
        :
    else
        $no_build && echo "Skipping installation" && return
        sudo pip3 install meson
        touch meson-done
    fi
}

uninstall_meson() {
    #
    # If we installed Meson, uninstal it with pip3.
    #
    if [ -f meson-done ] ; then
        sudo pip3 uninstall meson
        rm -f meson-done
    fi
}

install_pytest() {
    #
    # Install pytest with pip3 if we don't have it already.
    #
    if python3 -m pytest --version &> /dev/null || pytest --version &> /dev/null
    then
        # We have it.
        :
    else
        sudo pip3 install pytest pytest-xdist
        touch pytest-done
    fi
}

uninstall_pytest() {
    #
    # If we installed pytest, uninstal it with pip3.
    #
    if [ -f pytest-done ] ; then
        sudo pip3 uninstall pytest pytest-xdist
        rm -f pytest-done
    fi
}

install_gettext() {
    if [ ! -f gettext-$GETTEXT_VERSION-done ] ; then
        echo "Downloading, building, and installing GNU gettext:"
        [ -f gettext-$GETTEXT_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://ftp.gnu.org/pub/gnu/gettext/gettext-$GETTEXT_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat gettext-$GETTEXT_VERSION.tar.gz | tar xf -
        cd gettext-$GETTEXT_VERSION
        CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch gettext-$GETTEXT_VERSION-done
    fi
}

uninstall_gettext() {
    if [ -n "$installed_gettext_version" ] ; then
        #
        # GLib depends on this, so uninstall it.
        #
        uninstall_glib "$@"

        echo "Uninstalling GNU gettext:"
        cd gettext-$installed_gettext_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm gettext-$installed_gettext_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf gettext-$installed_gettext_version
            rm -rf gettext-$installed_gettext_version.tar.gz
        fi

        installed_gettext_version=""
    fi
}

install_pkg_config() {
    if [ ! -f pkg-config-$PKG_CONFIG_VERSION-done ] ; then
        echo "Downloading, building, and installing pkg-config:"
        [ -f pkg-config-$PKG_CONFIG_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://pkgconfig.freedesktop.org/releases/pkg-config-$PKG_CONFIG_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat pkg-config-$PKG_CONFIG_VERSION.tar.gz | tar xf -
        cd pkg-config-$PKG_CONFIG_VERSION
        CFLAGS="$CFLAGS -Wno-int-conversion" ./configure "${CONFIGURE_OPTS[@]}" --with-internal-glib
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch pkg-config-$PKG_CONFIG_VERSION-done
    fi
}

uninstall_pkg_config() {
    if [ -n "$installed_pkg_config_version" ] ; then
        echo "Uninstalling pkg-config:"
        cd pkg-config-$installed_pkg_config_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm pkg-config-$installed_pkg_config_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf pkg-config-$installed_pkg_config_version
            rm -rf pkg-config-$installed_pkg_config_version.tar.gz
        fi

        installed_pkg_config_version=""
    fi
}

install_glib() {
    if [ ! -f glib-$GLIB_VERSION-done ] ; then
        echo "Downloading, building, and installing GLib:"
        glib_dir=$( expr "$GLIB_VERSION" : '\([0-9][0-9]*\.[0-9][0-9]*\).*' )
        #
        # Starting with GLib 2.28.8, xz-compressed tarballs are available.
        #
        [ -f glib-$GLIB_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" "https://download.gnome.org/sources/glib/$glib_dir/glib-$GLIB_VERSION.tar.xz"
        $no_build && echo "Skipping installation" && return
        xzcat glib-$GLIB_VERSION.tar.xz | tar xf -
        cd glib-$GLIB_VERSION
        #
        # First, determine where the system include files are.
        # (It's not necessarily /usr/include.)  There's a bit of a
        # greasy hack here; pre-5.x versions of the developer tools
        # don't support the --show-sdk-path option, and will produce
        # no output, so includedir will be set to /usr/include
        # (in those older versions of the developer tools, there is
        # a /usr/include directory).
        #
        # We need this for several things we do later.
        #
        includedir=$( SDKROOT="$SDKPATH" xcrun --show-sdk-path 2>/dev/null )/usr/include
        #
        # GLib's configuration procedure, whether autotools-based or
        # Meson-based, really likes to use pkg-config to find libraries,
        # including libffi.
        #
        # At least some versions of macOS provide libffi, but, as macOS
        # doesn't provide pkg-config, they don't provide a .pc file for
        # it, so the autotools-based configuration needs some trickery
        # to get it to find the OS-supplied libffi, and the Meson-based
        # configuration simply won't find it at all.
        #
        # So, if we have a system-provided libffi, but pkg-config
        # doesn't find libffi, we construct a .pc file for that libffi,
        # and install it in $installation_prefix/lib/pkgconfig.
        #
        # First, check whether pkg-config finds libffi but thinks its
        # header files are in a non-existent directory.  That probaby
        # means that we generated the .pc file when some SDK was the
        # appropriate choice, but Xcode has been updated since then
        # and that SDK is no longer present.  If so, we remove it,
        # so that we will regenerate it if necessary, rather than
        # trying to build with a bogus include directory.  (Yes, this
        # can happen, and has happened, causing mysterius build
        # failures when "#include <ffi.h>" fails.)
        #
        if pkg-config libffi ; then
            # We have a .pc file for libffi; what does it say the
            # include directory is?
            incldir=$( pkg-config --variable=includedir libffi )
            if [ -n "$incldir" -a ! -d "$incldir" ] ; then
                # Bogus - remove it, assuming
                $DO_RM "$installation_prefix/lib/pkgconfig/libffi.pc"
            fi
        fi
        if pkg-config libffi ; then
            # It found libffi; no need to install a .pc file, and we
            # don't want to overwrite what's there already.
            :
        elif [ ! -e "$includedir"/ffi/ffi.h ] ; then
            # We don't appear to have libffi as part of the system, so
            # let the configuration process figure out what to do.
            #
            # We test for the header file, not the library, because, in
            # Big Sur and later, there's no guarantee that, for a system
            # shared library, there's a corresponding dylib file in
            # /usr/lib.
            :
        else
            #
            # We have libffi, but pkg-config didn't find it; generate
            # and install the .pc file.
            #

            #
            # Now generate the .pc file.
            #
            # We generate the contents of the .pc file by using cat with
            # a here document containing a template for the file and
            # piping that to a sed command that replaces @INCLUDEDIR@ in
            # the template with the include directory we discovered
            # above, so that the .pc file gives the compiler flags
            # necessary to find the libffi headers (which are *not*
            # necessarily in /usr/include, as per the above).
            #
            # The EOF marker for the here document is in quotes, to tell
            # the shell not to do shell expansion, as .pc files use a
            # syntax to refer to .pc file variables that looks like the
            # syntax to refer to shell variables.
            #
            # The writing of the libffi.pc file is a greasy hack - the
            # process of generating the contents of the .pc file writes
            # to the standard output, but running the last process in
            # the pipeline as root won't allow the shell that's
            # *running* it to open the .pc file if we don't have write
            # permission on $installation_prefix/lib/pkgconfig, so we need a
            # program that creates a file and then reads from the
            # standard input and writes to that file.  UN*Xes have a
            # program that does that; it's called "tee". :-)
            #
            # However, it *also* writes the file to the standard output,
            # so we redirect that to /dev/null when we run it.
            #
            cat <<"EOF" | sed "s;@INCLUDEDIR@;$includedir;" | $DO_TEE_TO_PC_FILE "$installation_prefix/lib/pkgconfig/libffi.pc" >/dev/null
prefix=/usr
libdir=${prefix}/lib
includedir=@INCLUDEDIR@

Name: ffi
Description: Library supporting Foreign Function Interfaces
Version: 3.2.9999
Libs: -L${libdir} -lffi
Cflags: -I${includedir}/ffi
EOF
        fi

        #
        # GLib 2.59.1 and later use Meson+Ninja as the build system.
        #
        case $GLIB_MAJOR_VERSION in

        1)
            echo "GLib $GLIB_VERSION" is too old 1>&2
            ;;

        *)
            case $GLIB_MINOR_VERSION in

            [0-9]|1[0-9]|2[0-9]|3[0-9]|4[0-9])
                echo "GLib $GLIB_VERSION" is too old 1>&2
                ;;

            5[0-8])
                if [ ! -f ./configure ]; then
                    LIBTOOLIZE=glibtoolize ./autogen.sh
                fi
                #
                # At least with the version of Xcode that comes with
                # Leopard, /usr/include/ffi/fficonfig.h doesn't define
                # MACOSX, which causes the build of GLib to fail for at
                # least some versions of GLib.  If we don't find
                # "#define.*MACOSX" in /usr/include/ffi/fficonfig.h,
                # explicitly define it.
                #
                # While we're at it, suppress -Wformat-nonliteral to
                # avoid a case where clang's stricter rules on when not
                # to complain about non-literal format arguments cause
                # it to complain about code that's safe but it wasn't
                # told that.  See my comment #25 in GNOME bug 691608:
                #
                #    https://bugzilla.gnome.org/show_bug.cgi?id=691608#c25
                #
                if grep -qs '#define.*MACOSX' "$includedir/ffi/fficonfig.h"
                then
                    # It's defined, nothing to do
                    CFLAGS="$CFLAGS -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
                        ./configure "${CONFIGURE_OPTS[@]}"
                else
                    CFLAGS="$CFLAGS -DMACOSX -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS -DMACOSX -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
                        ./configure "${CONFIGURE_OPTS[@]}"
                fi
                make "${MAKE_BUILD_OPTS[@]}"
                $DO_MAKE_INSTALL
                ;;

            59|[6-9][0-9]|[1-9][0-9][0-9])
                #
                # 2.59.0 doesn't require Meson and Ninja, but it
                # supports it, and I'm too lazy to add a dot-dot
                # version check.
                #
                # Disable tests to work around
                #
                #    https://gitlab.gnome.org/GNOME/glib/-/issues/2902
                #
                CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
                    $MESON -Dprefix="$installation_prefix" -Dtests=false _build
                ninja -C _build
                $DO_NINJA_INSTALL
                ;;
            *)
                echo "Glib's put out 1000 2.x releases?" 1>&2
                ;;

            esac
        esac
        cd ..
        touch glib-$GLIB_VERSION-done
    fi
}

uninstall_glib() {
    if [ -n "$installed_glib_version" ] ; then
        echo "Uninstalling GLib:"
        cd "glib-$installed_glib_version"
        installed_glib_major_version="$( expr "$installed_glib_version" : '\([0-9][0-9]*\).*' )"
        installed_glib_minor_version="$( expr "$installed_glib_version" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
        # installed_glib_dotdot_version="$( expr $installed_glib_version : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
        # installed_glib_major_minor_version=$installed_glib_major_version.$installed_glib_minor_version
        # installed_glib_major_minor_dotdot_version=$installed_glib_major_version.$installed_glib_minor_version.$installed_glib_dotdot_version
        #
        # GLib 2.59.1 and later use Meson+Ninja as the build system.
        #
        case $installed_glib_major_version in

        1)
            $DO_MAKE_UNINSTALL
            #
            # This appears to delete dependencies out from under other
            # Makefiles in the tree, causing it to fail.  At least until
            # that gets fixed, if it ever gets fixed, we just ignore the
            # exit status of "make distclean"
            #
            # make distclean
            make distclean || echo "Ignoring make distclean failure" 1>&2
            ;;

        *)
            case $installed_glib_minor_version in

            [0-9]|1[0-9]|2[0-9]|3[0-9]|4[0-9]|5[0-8])
                $DO_MAKE_UNINSTALL
                #
                # This appears to delete dependencies out from under other
                # Makefiles in the tree, causing it to fail.  At least until
                # that gets fixed, if it ever gets fixed, we just ignore the
                # exit status of "make distclean"
                #
                # make distclean
                make distclean || echo "Ignoring make distclean failure" 1>&2
                ;;

            59|[6-9][0-9]|[1-9][0-9][0-9])
                #
                # 2.59.0 doesn't require Meson and Ninja, but it
                # supports it, and I'm too lazy to add a dot-dot
                # version check.
                #
                $DO_NINJA_UNINSTALL
                #
                # For Meson+Ninja, we do the build in an _build
                # subdirectory, so the equivalent of "make distclean"
                # is just to remove the directory tree.
                #
                rm -rf _build
                ;;

            *)
                echo "Glib's put out 1000 2.x releases?" 1>&2
                ;;
            esac
        esac
        cd ..
        rm glib-$installed_glib_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf glib-$installed_glib_version
            rm -rf glib-$installed_glib_version.tar.xz
        fi

        installed_glib_version=""
    fi
}

install_qt() {
    if [ "$QT_VERSION" -a ! -f qt-$QT_VERSION-done ]; then
        echo "Downloading and installing Qt:"
        #
        # What you get for this URL might just be a 302 Found reply, so use
        # -L so we get redirected.
        #
        # 5.0 - 5.1:  qt-mac-opensource-{version}-clang-offline.dmg
        # 5.2.0:      qt-mac-opensource-{version}.dmg
        # 5.2.1:      qt-opensource-mac-x64-clang-{version}.dmg
        # 5.3 - 5.8:  qt-opensource-mac-x64-clang-{version}.dmg
        # 5.9 - 5.14: qt-opensource-mac-x64-{version}.dmg
        # 5.15 - 6.0: Offline installers no longer provided.
        # ( https://download.qt.io/archive/qt/5.15/5.15.0/OFFLINE_README.txt )
        # XXX: We need a different approach for QT >= 5.15. One option would be to
        # install https://github.com/miurahr/aqtinstall, either permanently or into
        # a temporary venv.
        #
        case $QT_MAJOR_VERSION in

        1|2|3|4)
            echo "Qt $QT_VERSION" is too old 1>&2
            ;;

        5)
            case $QT_MINOR_VERSION in

            0|1|2|3|4|5|6|7|8|9|10|11|12|13|14)
                echo "Qt $QT_VERSION" is too old 1>&2
                ;;

            *)
                echo "The Qt Company no longer provides open source offline installers for Qt $QT_VERSION" 1>&2
                ;;

            esac
            [ -f $QT_VOLUME.dmg ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://download.qt.io/archive/qt/$QT_MAJOR_MINOR_VERSION/$QT_MAJOR_MINOR_DOTDOT_VERSION/$QT_VOLUME.dmg
            $no_build && echo "Skipping installation" && return
            sudo hdiutil attach $QT_VOLUME.dmg

            #
            # Run the installer executable directly, so that we wait for
            # it to finish.  Then unmount the volume.
            #
            /Volumes/$QT_VOLUME/$QT_VOLUME.app/Contents/MacOS/$QT_VOLUME
            sudo hdiutil detach /Volumes/$QT_VOLUME
            touch qt-$QT_VERSION-done
            ;;
        *)
            echo "The Qt Company no longer provides open source offline installers for Qt $QT_VERSION" 1>&2
            ;;
        esac
    fi
}

uninstall_qt() {
    if [ -n "$installed_qt_version" ] ; then
        echo "Uninstalling Qt:"
        rm -rf $HOME/Qt$installed_qt_version
        rm qt-$installed_qt_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded version.
            #
            # 5.0 - 5.1:  qt-mac-opensource-{version}-clang-offline.dmg
            # 5.2.0:      qt-mac-opensource-{version}.dmg
            # 5.2.1:      qt-opensource-mac-x64-clang-{version}.dmg
            # 5.3 - 5.8:  qt-opensource-mac-x64-clang-{version}.dmg
            # 5.9 - 5.14: qt-opensource-mac-x64-{version}.dmg
            #
            installed_qt_major_version="$( expr "$installed_qt_version" : '\([0-9][0-9]*\).*' )"
            installed_qt_minor_version="$( expr "$installed_qt_version" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
            # installed_qt_dotdot_version="$( expr "$installed_qt_version" : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
            case $installed_qt_major_version in

            1|2|3|4)
                echo "Qt $installed_qt_version" is too old 1>&2
                ;;

            5*)
                case $installed_qt_minor_version in

                0|1|2|3|4|5|6|7|8|9|10|11)
                    echo "Qt $installed_qt_version" is too old 1>&2
                    ;;

                12|13|14)
                    installed_qt_volume=qt-opensource-mac-x64-$installed_qt_version.dmg
                    ;;
                esac
            esac
            rm -f $installed_qt_volume
        fi

        installed_qt_version=""
    fi
}

install_libsmi() {
    if [ "$LIBSMI_VERSION" -a ! -f libsmi-$LIBSMI_VERSION-done ] ; then
        echo "Downloading, building, and installing libsmi:"
        [ -f libsmi-$LIBSMI_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.ibr.cs.tu-bs.de/projects/libsmi/download/libsmi-$LIBSMI_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat libsmi-$LIBSMI_VERSION.tar.gz | tar xf -
        cd libsmi-$LIBSMI_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch libsmi-$LIBSMI_VERSION-done
    fi
}

uninstall_libsmi() {
    if [ -n "$installed_libsmi_version" ] ; then
        echo "Uninstalling libsmi:"
        cd libsmi-$installed_libsmi_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm libsmi-$installed_libsmi_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf libsmi-$installed_libsmi_version
            rm -rf libsmi-$installed_libsmi_version.tar.gz
        fi

        installed_libsmi_version=""
    fi
}

install_libgpg_error() {
    if [ "$LIBGPG_ERROR_VERSION" -a ! -f libgpg-error-$LIBGPG_ERROR_VERSION-done ] ; then
        echo "Downloading, building, and installing libgpg-error:"
        [ -f libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.gnupg.org/ftp/gcrypt/libgpg-error/libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2
        $no_build && echo "Skipping installation" && return
        bzcat libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 | tar xf -
        cd libgpg-error-$LIBGPG_ERROR_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch libgpg-error-$LIBGPG_ERROR_VERSION-done
    fi
}

uninstall_libgpg_error() {
    if [ -n "$installed_libgpg_error_version" ] ; then
        #
        # libgcrypt depends on this, so uninstall it.
        #
        uninstall_libgcrypt "$@"

        echo "Uninstalling libgpg-error:"
        cd libgpg-error-$installed_libgpg_error_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm libgpg-error-$installed_libgpg_error_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf libgpg-error-$installed_libgpg_error_version
            rm -rf libgpg-error-$installed_libgpg_error_version.tar.bz2
        fi

        installed_libgpg_error_version=""
    fi
}

install_libgcrypt() {
    if [ "$LIBGCRYPT_VERSION" -a ! -f libgcrypt-$LIBGCRYPT_VERSION-done ] ; then
        #
        # libgpg-error is required for libgcrypt.
        #
        if [ -z $LIBGPG_ERROR_VERSION ]
        then
            echo "libgcrypt requires libgpg-error, but you didn't install libgpg-error." 1>&2
            exit 1
        fi

        echo "Downloading, building, and installing libgcrypt:"
        [ -f libgcrypt-$LIBGCRYPT_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.gnupg.org/ftp/gcrypt/libgcrypt/libgcrypt-$LIBGCRYPT_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat libgcrypt-$LIBGCRYPT_VERSION.tar.gz | tar xf -
        cd libgcrypt-$LIBGCRYPT_VERSION
        #
        # The assembler language code is not compatible with the macOS
        # x86 assembler (or is it an x86-64 vs. x86-32 issue?).
        #
        # libgcrypt expects gnu89, not c99/gnu99, semantics for
        # "inline".  See, for example:
        #
        #    https://lists.freebsd.org/pipermail/freebsd-ports-bugs/2010-October/198809.html
        #
        # We specify "unix" as the random number generator so that we
        # don't try to use getentropy, because random/rndgetentropy.c
        # *REQUIRES* Linux getrandom(), which we don't have.  (This should
        # not matter, as we only use this for decryption, as far as I know.)
        #
        CFLAGS="$CFLAGS -std=gnu89 $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}" --disable-asm --enable-random=unix
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch libgcrypt-$LIBGCRYPT_VERSION-done
    fi
}

uninstall_libgcrypt() {
    if [ -n "$installed_libgcrypt_version" ] ; then
        echo "Uninstalling libgcrypt:"
        cd libgcrypt-$installed_libgcrypt_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm libgcrypt-$installed_libgcrypt_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf libgcrypt-$installed_libgcrypt_version
            rm -rf libgcrypt-$installed_libgcrypt_version.tar.gz
        fi

        installed_libgcrypt_version=""
    fi
}

install_gmp() {
    if [ "$GMP_VERSION" ] && [ ! -f "gmp-$GMP_VERSION-done" ] ; then
        echo "Downloading, building, and installing GMP:"
        [ -f "gmp-$GMP_VERSION.tar.xz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://gmplib.org/download/gmp/gmp-$GMP_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat "gmp-$GMP_VERSION.tar.xz" | tar xf -
        cd "gmp-$GMP_VERSION"
        #
        # Create a fat binary: https://gmplib.org/manual/Notes-for-Package-Builds.html
        #
        # According to
        #
        #   https://www.mail-archive.com/gmp-bugs@gmplib.org/msg01492.html
        #
        # and other pages, the Shiny New Linker in Xcode 15 causes this
        # build to fail with "ld: branch8 out of range 384833 in
        # ___gmpn_add_nc_x86_64"; linking with -ld64 is a workaround.
        #
        # For now, link with -ld64 on Xcode 15 and later.
        #
        XCODE_VERSION=$( xcodebuild -version | sed -n 's;Xcode \(.*\);\1;p' )
        XCODE_MAJOR_VERSION="$( expr "$XCODE_VERSION" : '\([0-9][0-9]*\).*' )"
        # XCODE_MINOR_VERSION="$( expr $XCODE_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
        # XCODE_DOTDOT_VERSION="$( expr $XCODE_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
        if [ "$XCODE_MAJOR_VERSION" -ge 15 ]
        then
            LD64_FLAG="-ld64"
        else
            LD64_FLAG=""
        fi
        if [ "$DARWIN_PROCESSOR_ARCH" = "x86_64" ]
        then
            # If contemplating darwin20 or newer, refer to the last two paragraphs of
            # https://gmplib.org/list-archives/gmp-bugs/2024-October/005539.html
            # and either ensure that GMP is newer than 6.3.0 or run "autoreconf".
            GMP_BUILD_OPTION="--build=nehalem-apple-darwin18"
        else
            GMP_BUILD_OPTION=""
        fi
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS $LD64_FLAG" \
            ./configure "${CONFIGURE_OPTS[@]}" --enable-fat "$GMP_BUILD_OPTION"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch "gmp-$GMP_VERSION-done"
    fi
}

uninstall_gmp() {
    if [ -n "$installed_gmp_version" ] ; then
        #
        # Nettle depends on this, so uninstall it.
        #
        uninstall_nettle "$@"

        echo "Uninstalling GMP:"
        cd "gmp-$installed_gmp_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "gmp-$installed_gmp_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "gmp-$installed_gmp_version"
            rm -rf "gmp-$installed_gmp_version.tar.xz"
        fi

        installed_gmp_version=""
    fi
}

install_libtasn1() {
    if [ "$LIBTASN1_VERSION" ] && [ ! -f "libtasn1-$LIBTASN1_VERSION-done" ] ; then
        echo "Downloading, building, and installing libtasn1:"
        [ -f "libtasn1-$LIBTASN1_VERSION.tar.gz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" "https://ftp.gnu.org/gnu/libtasn1/libtasn1-$LIBTASN1_VERSION.tar.gz"
        $no_build && echo "Skipping installation" && return
        gzcat "libtasn1-$LIBTASN1_VERSION.tar.gz" | tar xf -
        cd "libtasn1-$LIBTASN1_VERSION"
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch "libtasn1-$LIBTASN1_VERSION-done"
    fi
}

uninstall_libtasn1() {
    if [ -n "$installed_libtasn1_version" ] ; then
        #
        # p11-kit depends on this, so uninstall it.
        #
        uninstall_p11_kit "$@"

        echo "Uninstalling libtasn1:"
        cd "libtasn1-$installed_libtasn1_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "libtasn1-$installed_libtasn1_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "libtasn1-$installed_libtasn1_version"
            rm -rf "libtasn1-$installed_libtasn1_version.tar.gz"
        fi

        installed_libtasn1_version=""
    fi
}

install_p11_kit() {
    if [ "$P11KIT_VERSION" ] && [ ! -f "p11-kit-$P11KIT_VERSION-done" ] ; then
        echo "Downloading, building, and installing p11-kit:"
        [ -f "p11-kit-$P11KIT_VERSION.tar.xz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" "https://github.com/p11-glue/p11-kit/releases/download/$P11KIT_VERSION/p11-kit-$P11KIT_VERSION.tar.xz"
        $no_build && echo "Skipping installation" && return
        xzcat "p11-kit-$P11KIT_VERSION.tar.xz" | tar xf -
        cd "p11-kit-$P11KIT_VERSION"
        #
        # Prior to Catalina, the libffi that's supplied with macOS
        # doesn't support ffi_closure_alloc() or ffi_prep_closure_loc(),
        # both of which are required by p11-kit if built with libffi.
        #
        # According to
        #
        #    https://p11-glue.github.io/p11-glue/p11-kit/manual/devel-building.html
        #
        # libffi is used "for sharing of PKCS#11 modules between
        # multiple callers in the same process. It is highly recommended
        # that this dependency be treated as a required dependency.",
        # but it's not clear that this matters to us, so we just
        # configure p11-kit not to use libffi.
        #
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LIBS=-lintl \
            ./configure "${CONFIGURE_OPTS[@]}" --without-libffi --without-trust-paths
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch "p11-kit-$P11KIT_VERSION-done"
    fi
}

uninstall_p11_kit() {
    if [ -n "$installed_p11_kit_version" ] ; then
        #
        # Nettle depends on this, so uninstall it.
        #
        uninstall_nettle "$@"

        echo "Uninstalling p11-kit:"
        cd "p11-kit-$installed_p11_kit_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "p11-kit-$installed_p11_kit_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "p11-kit-$installed_p11_kit_version"
            rm -rf "p11-kit-$installed_p11_kit_version.tar.xz"
        fi

        installed_p11_kit_version=""
    fi
}

install_nettle() {
    if [ "$NETTLE_VERSION" ] && [ ! -f "nettle-$NETTLE_VERSION-done" ] ; then
        echo "Downloading, building, and installing Nettle:"
        [ -f "nettle-$NETTLE_VERSION.tar.gz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" "https://ftp.gnu.org/gnu/nettle/nettle-$NETTLE_VERSION.tar.gz"
        $no_build && echo "Skipping installation" && return
        gzcat "nettle-$NETTLE_VERSION.tar.gz" | tar xf -
        cd "nettle-$NETTLE_VERSION"
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch "nettle-$NETTLE_VERSION-done"
    fi
}

uninstall_nettle() {
    if [ -n "$installed_nettle_version" ] ; then
        #
        # GnuTLS depends on this, so uninstall it.
        #
        uninstall_gnutls "$@"

        echo "Uninstalling Nettle:"
        cd "nettle-$installed_nettle_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "nettle-$installed_nettle_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "nettle-$installed_nettle_version"
            rm -rf "nettle-$installed_nettle_version.tar.gz"
        fi

        installed_nettle_version=""
    fi
}

install_gnutls() {
    if [ "$GNUTLS_VERSION" ] && [ ! -f "gnutls-$GNUTLS_VERSION-done" ] ; then
        #
        # GnuTLS requires Nettle.
        #
        if [ -z "$NETTLE_VERSION" ]
        then
            echo "GnuTLS requires Nettle, but you didn't install Nettle" 1>&2
            exit 1
        fi

        echo "Downloading, building, and installing GnuTLS:"
        [ -f gnutls-$GNUTLS_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" "https://www.gnupg.org/ftp/gcrypt/gnutls/v$GNUTLS_MAJOR_VERSION.$GNUTLS_MINOR_VERSION/gnutls-$GNUTLS_VERSION.tar.xz"
        echo "$GNUTLS_SHA256  gnutls-$GNUTLS_VERSION.tar.xz" | shasum --algorithm 256 --check
        $no_build && echo "Skipping installation" && return
        tar -xf gnutls-$GNUTLS_VERSION.tar.xz
        cd gnutls-$GNUTLS_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}" --with-included-unistring --disable-guile
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch gnutls-$GNUTLS_VERSION-done
    fi
}

uninstall_gnutls() {
    if [ -n "$installed_gnutls_version" ] ; then
        echo "Uninstalling GnuTLS:"
        cd "gnutls-$installed_gnutls_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "gnutls-$installed_gnutls_version-done" s

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "gnutls-$installed_gnutls_version"
            rm -rf "gnutls-$installed_gnutls_version.tar.bz2"
        fi

        installed_gnutls_version=""
    fi
}

install_lua() {
    if [ "$LUA_VERSION" -a ! -f lua-$LUA_VERSION-done ] ; then
        echo "Downloading, building, and installing Lua:"
        [ -f lua-$LUA_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.lua.org/ftp/lua-$LUA_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat lua-$LUA_VERSION.tar.gz | tar xf -
        cd lua-$LUA_VERSION
        make INSTALL_TOP="$installation_prefix" MYCFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" MYLDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" macosx
        $DO_MAKE INSTALL_TOP="$installation_prefix" install
        cd ..
        touch lua-$LUA_VERSION-done
    fi
}

uninstall_lua() {
    if [ -n "$installed_lua_version" ] ; then
        echo "Uninstalling Lua:"
        #
        # Lua has no "make uninstall", so just remove stuff manually.
        # There's no configure script, so there's no need for
        # "make distclean", either; just do "make clean".
        #
        (cd "$installation_prefix/bin"; $DO_RM -f lua luac)
        (cd "$installation_prefix/include"; $DO_RM -f lua.h luaconf.h lualib.h lauxlib.h lua.hpp)
        (cd "$installation_prefix/lib"; $DO_RM -f liblua.a)
        (cd "$installation_prefix/man/man1"; $DO_RM -f lua.1 luac.1)
        cd lua-$installed_lua_version
        make clean
        cd ..
        rm lua-$installed_lua_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf lua-$installed_lua_version
            rm -rf lua-$installed_lua_version.tar.gz
        fi

        installed_lua_version=""
    fi
}

install_snappy() {
    if [ "$SNAPPY_VERSION" -a ! -f snappy-$SNAPPY_VERSION-done ] ; then
        echo "Downloading, building, and installing snappy:"
        [ -f snappy-$SNAPPY_VERSION.tar.gz ] || curl "${CURL_LOCAL_NAME_OPTS[@]}" snappy-$SNAPPY_VERSION.tar.gz https://github.com/google/snappy/archive/$SNAPPY_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat snappy-$SNAPPY_VERSION.tar.gz | tar xf -
        cd snappy-$SNAPPY_VERSION
	if [ "$SNAPPY_VERSION" = "1.1.10" ] ; then
	    # This patch corresponds to https://github.com/google/snappy/commit/27f34a580be4a3becf5f8c0cba13433f53c21337
	    patch -p0 < "${topdir}/tools/macos-setup-patches/snappy-signed.patch"
	fi
        mkdir build_dir
        cd build_dir
        #
        # Build a shared library, because we'll be linking libwireshark,
        # which is a C library, with libsnappy, and libsnappy is a C++
        # library and requires the C++ run time; the shared library
        # will carry that dependency with it, so linking with it should
        # Just Work.
        #
        "${DO_CMAKE[@]}" -DBUILD_SHARED_LIBS=YES -DSNAPPY_BUILD_BENCHMARKS=NO -DSNAPPY_BUILD_TESTS=NO ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch snappy-$SNAPPY_VERSION-done
    fi
}

uninstall_snappy() {
    if [ -n "$installed_snappy_version" ] ; then
        echo "Uninstalling snappy:"
        cd snappy-$installed_snappy_version
        #
        # snappy uses cmake and doesn't support "make uninstall";
        # just remove what we know it installs.
        #
        # $DO_MAKE_UNINSTALL
        if [ -s build_dir/install_manifest.txt ] ; then
            while read -r ; do $DO_RM -v "$REPLY" ; done < <(cat build_dir/install_manifest.txt; echo)
        else
            $DO_RM -f "$installation_prefix/lib/libsnappy.1.1.8.dylib" \
                    "$installation_prefix/lib/libsnappy.1.dylib" \
                    "$installation_prefix/lib/libsnappy.dylib" \
                    "$installation_prefix/include/snappy-c.h" \
                    "$installation_prefix/include/snappy-sinksource.h" \
                    "$installation_prefix/include/snappy-stubs-public.h" \
                    "$installation_prefix/include/snappy.h" \
                    "$installation_prefix/lib/cmake/Snappy/SnappyConfig.cmake" \
                    "$installation_prefix/lib/cmake/Snappy/SnappyConfigVersion.cmake" \
                    "$installation_prefix/lib/cmake/Snappy/SnappyTargets-noconfig.cmake" \
                    "$installation_prefix/lib/cmake/Snappy/SnappyTargets.cmake"
        fi
        #
        # snappy uses cmake and doesn't support "make distclean";
        #.just remove the entire build directory.
        #
        # make distclean
        rm -rf build_dir
        cd ..
        rm snappy-$installed_snappy_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf snappy-$installed_snappy_version
            rm -rf snappy-$installed_snappy_version.tar.gz
        fi

        installed_snappy_version=""
    fi
}

install_zstd() {
    if [ "$ZSTD_VERSION" ] && [ ! -f zstd-$ZSTD_VERSION-done ] ; then
        echo "Downloading, building, and installing zstd:"
        [ -f zstd-$ZSTD_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://github.com/facebook/zstd/releases/download/v$ZSTD_VERSION/zstd-$ZSTD_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat zstd-$ZSTD_VERSION.tar.gz | tar xf -
        cd zstd-$ZSTD_VERSION
        # We shouldn't have to specify DESTDIR.
        # https://github.com/facebook/zstd/issues/3146
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            make PREFIX="$installation_prefix" DESTDIR="$installation_prefix" "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE PREFIX="$installation_prefix" install
        cd ..
        touch zstd-$ZSTD_VERSION-done
    fi
}

uninstall_zstd() {
    if [ -n "$installed_zstd_version" ] ; then
        echo "Uninstalling zstd:"
        cd "zstd-$installed_zstd_version"
        $DO_MAKE_UNINSTALL
        #
        # zstd has no configure script, so there's no need for
        # "make distclean", and the Makefile supplied with it
        # has no "make distclean" rule; just do "make clean".
        #
        make clean
        cd ..
        rm "zstd-$installed_zstd_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "zstd-$installed_zstd_version"
            rm -rf "zstd-$installed_zstd_version.tar.gz"
        fi

        installed_zstd_version=""
    fi
}
#$ZLIBNG_VERSION
install_zlibng() {
    if [ "$ZLIBNG_VERSION" ] && [ ! -f zlib-ng-$ZLIBNG_VERSION-done ] ; then
        echo "Downloading, building, and installing zlib-ng:"
        [ -f $ZLIBNG_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://github.com/zlib-ng/zlib-ng/archive/refs/tags/$ZLIBNG_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat $ZLIBNG_VERSION.tar.gz | tar xf -
        cd zlib-ng-$ZLIBNG_VERSION
        mkdir build
        cd build
        "${DO_CMAKE[@]}" ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch zlib-ng-$ZLIBNG_VERSION-done
    fi
}

uninstall_zlibng() {
    if [ -n "$installed_zstd_version" ] ; then
        echo "Uninstalling zlibng:"
        cd "zlib-ng-$installed_zlibng_version"
        $DO_MAKE_UNINSTALL
        #
        # XXX not sure what to do here...
        #
        make clean
        cd ..
        rm "zlib-ng-$installed_zlibng_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "zlib-ng-$installed_zlibng_version"
            rm -rf "zlib-ng-$installed_zlibng_version.tar.gz"
        fi

        installed_zlibng_version=""
    fi
}
install_libxml2() {
    if [ "$LIBXML2_VERSION" ] && [ ! -f libxml2-$LIBXML2_VERSION-done ] ; then
        echo "Downloading, building, and installing libxml2:"
        LIBXML2_MAJOR_VERSION="$( expr "$LIBXML2_VERSION" : '\([0-9][0-9]*\).*' )"
        LIBXML2_MINOR_VERSION="$( expr "$LIBXML2_VERSION" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
        LIBXML2_MAJOR_MINOR_VERSION=$LIBXML2_MAJOR_VERSION.$LIBXML2_MINOR_VERSION
        [ -f libxml2-$LIBXML2_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" "https://download.gnome.org/sources/libxml2/$LIBXML2_MAJOR_MINOR_VERSION/libxml2-$LIBXML2_VERSION.tar.xz"
        echo "$LIBXML2_SHA256  libxml2-$LIBXML2_VERSION.tar.xz" | shasum --algorithm 256 --check
        $no_build && echo "Skipping installation" && return
        xzcat libxml2-$LIBXML2_VERSION.tar.xz | tar xf -
        cd "libxml2-$LIBXML2_VERSION"
        #
        # At least on macOS 12.0.1 with Xcode 13.1, when we build
        # libxml2, the linker complains that we don't have the right
        # to link with the Python framework, so don't build with
        # Python.
        #
        CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}" --without-python
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch libxml2-$LIBXML2_VERSION-done
    fi
}

uninstall_libxml2() {
    if [ -n "$installed_libxml2_version" ] ; then
        echo "Uninstalling libxml2:"
        cd "libxml2-$installed_libxml2_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "libxml2-$installed_libxml2_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "libxml2-$installed_libxml2_version"
            rm -rf "libxml2-$installed_libxml2_version.tar.xz"
        fi

        installed_libxml2_version=""
    fi
}

install_lz4() {
    if [ "$LZ4_VERSION" ] && [ ! -f lz4-$LZ4_VERSION-done ] ; then
        echo "Downloading, building, and installing lz4:"
        #
        # lz4 switched from sequentially numbered releases, named rN,
        # to vX.Y.Z-numbered releases.
        #
        # The old sequentially-numbered releases were in tarballs
        # at https://github.com/lz4/lz4/archive/rN.tar.gz, which
        # extract into an lz4-rN directory.
        #
        # THe new vX.Y.Z-numbered releases are in tarballs at
        # https://github.com/lz4/lz4/archive/vX.Y.Z.tar.gz, which
        # extract into an lz4-X.Y.Z directory - no, not lz4-vX.Y.Z,
        # just lz4-X.Y.Z.
        #
        # We expect LZ4_VERSION to be set to rN for the sequentially-
        # numbered releases and X.Y.Z - not vX.Y.Z - for the vX.Y.Z-
        # numbered releases.  We also tell Curl to download the tarball
        # with a name that corresponds to the name of the target
        # directory, so that it begins with "lz4-" and ends with either
        # "rN" or "X.Y.Z", to match what almost all of the other
        # support libraries do.
        #
        if [[ "$LZ4_VERSION" == r* ]]
        then
            echo "lz4 $LZ4_VERSION" is too old 1>&2
        else
            LZ4_MAJOR_VERSION="$( expr "$LZ4_VERSION" : '\([0-9][0-9]*\).*' )"
            LZ4_MINOR_VERSION="$( expr "$LZ4_VERSION" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
            [ -f lz4-$LZ4_VERSION.tar.gz ] || curl "${CURL_LOCAL_NAME_OPTS[@]}" lz4-$LZ4_VERSION.tar.gz https://github.com/lz4/lz4/archive/v$LZ4_VERSION.tar.gz
            $no_build && echo "Skipping installation" && return
            gzcat lz4-$LZ4_VERSION.tar.gz | tar xf -
            cd lz4-$LZ4_VERSION
            #
            # On lz4 < 1.10.0, if MOREFLAGS is set, that's added to CFLAGS (or
            # CPPFLAGS on 1.9.4), and those are combined with LDFLAGS into
            # FLAGS, which is used when building source files and libraries.
            #
            # On lz4 >= 1.10.0, user defined CFLAGS are appended the default
            # CFLAGS, and those are combined with CPPFLAGS and LDFLAGS into
            # ALLFLAGS, which is used when building source files and libraries.
            #
            if [[ "$LZ4_MAJOR_VERSION" -gt 1 ]] || [[ "$LZ4_MINOR_VERSION" -ge 10 ]]; then
                CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" \
                    make PREFIX="$installation_prefix" "${MAKE_BUILD_OPTS[@]}"
            else
                MOREFLAGS="-D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" \
                    make PREFIX="$installation_prefix" "${MAKE_BUILD_OPTS[@]}"
            fi
            $DO_MAKE PREFIX="$installation_prefix" install
            cd ..
        fi
        touch lz4-$LZ4_VERSION-done
    fi
}

uninstall_lz4() {
    if [ -n "$installed_lz4_version" ] ; then
        echo "Uninstalling lz4:"
        cd "lz4-$installed_lz4_version"
        $DO_MAKE_UNINSTALL
        #
        # lz4's Makefile doesn't support "make distclean"; just do
        # "make clean".  Perhaps not using autotools means that
        # there's no need for "make distclean".
        #
        # make distclean
        make clean
        cd ..
        rm "lz4-$installed_lz4_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            # "make install" apparently causes some stuff to be
            # modified in the build tree, so, as it's done as
            # root, that leaves stuff owned by root in the build
            # tree.  Therefore, we have to remove the build tree
            # as root.
            #
            sudo rm -rf "lz4-$installed_lz4_version"
            rm -rf "lz4-$installed_lz4_version.tar.gz"
        fi

        installed_lz4_version=""
    fi
}

install_sbc() {
    if [ "$SBC_VERSION" -a ! -f sbc-$SBC_VERSION-done ] ; then
        echo "Downloading, building, and installing sbc:"
        [ -f sbc-$SBC_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.kernel.org/pub/linux/bluetooth/sbc-$SBC_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat sbc-$SBC_VERSION.tar.gz | tar xf -
        cd sbc-$SBC_VERSION
        if [ "$DARWIN_PROCESSOR_ARCH" = "arm64" ] ; then
            CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS -U__ARM_NEON__" CXXFLAGS="$CXXFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
                ./configure "${CONFIGURE_OPTS[@]}" --disable-tools --disable-tester --disable-shared
        else
            CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
                ./configure "${CONFIGURE_OPTS[@]}" --disable-tools --disable-tester --disable-shared
        fi
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch sbc-$SBC_VERSION-done
    fi
}

uninstall_sbc() {
    if [ -n "$installed_sbc_version" ] ; then
        echo "Uninstalling sbc:"
        cd sbc-$installed_sbc_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm sbc-$installed_sbc_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf sbc-$installed_sbc_version
            rm -rf sbc-$installed_sbc_version.tar.gz
        fi

        installed_sbc_version=""
    fi
}

install_maxminddb() {
    if [ "$MAXMINDDB_VERSION" -a ! -f maxminddb-$MAXMINDDB_VERSION-done ] ; then
        echo "Downloading, building, and installing MaxMindDB API:"
        [ -f libmaxminddb-$MAXMINDDB_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://github.com/maxmind/libmaxminddb/releases/download/$MAXMINDDB_VERSION/libmaxminddb-$MAXMINDDB_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat libmaxminddb-$MAXMINDDB_VERSION.tar.gz | tar xf -
        cd libmaxminddb-$MAXMINDDB_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch maxminddb-$MAXMINDDB_VERSION-done
    fi
}

uninstall_maxminddb() {
    if [ -n "$installed_maxminddb_version" ] ; then
        echo "Uninstalling MaxMindDB API:"
        cd libmaxminddb-$installed_maxminddb_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm maxminddb-$installed_maxminddb_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf libmaxminddb-$installed_maxminddb_version
            rm -rf libmaxminddb-$installed_maxminddb_version.tar.gz
        fi

        installed_maxminddb_version=""
    fi
}

install_c_ares() {
    if [ "$CARES_VERSION" -a ! -f c-ares-$CARES_VERSION-done ] ; then
        echo "Downloading, building, and installing C-Ares API:"
        # https://github.com/c-ares/c-ares/releases/download/v1.31.0/c-ares-1.31.0.tar.gz
        [ -f c-ares-$CARES_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://github.com/c-ares/c-ares/releases/download/v$CARES_VERSION/c-ares-$CARES_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat c-ares-$CARES_VERSION.tar.gz | tar xf -
        cd c-ares-$CARES_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch c-ares-$CARES_VERSION-done
    fi
}

uninstall_c_ares() {
    if [ -n "$installed_cares_version" ] ; then
        echo "Uninstalling C-Ares API:"
        cd c-ares-$installed_cares_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm c-ares-$installed_cares_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf c-ares-$installed_cares_version
            rm -rf c-ares-$installed_cares_version.tar.gz
        fi

        installed_cares_version=""
    fi
}

install_libssh() {
    if [ "$LIBSSH_VERSION" -a ! -f libssh-$LIBSSH_VERSION-done ] ; then
        echo "Downloading, building, and installing libssh:"
        LIBSSH_MAJOR_VERSION="$( expr "$LIBSSH_VERSION" : '\([0-9][0-9]*\).*' )"
        LIBSSH_MINOR_VERSION="$( expr "$LIBSSH_VERSION" : '[0-9][0-9]*\.\([0-9][0-9]*\).*' )"
        LIBSSH_MAJOR_MINOR_VERSION=$LIBSSH_MAJOR_VERSION.$LIBSSH_MINOR_VERSION
        [ -f libssh-$LIBSSH_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.libssh.org/files/$LIBSSH_MAJOR_MINOR_VERSION/libssh-$LIBSSH_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat libssh-$LIBSSH_VERSION.tar.xz | tar xf -
        cd "libssh-$LIBSSH_VERSION"
        patch -p1 < "${topdir}/tools/macos-setup-patches/libssh-werror.patch"
        mkdir build
        cd build
        "${DO_CMAKE[@]}" -DWITH_GCRYPT=1 ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch libssh-$LIBSSH_VERSION-done
    fi
}

uninstall_libssh() {
    if [ -n "$installed_libssh_version" ] ; then
        echo "Uninstalling libssh:"
        cd libssh-$installed_libssh_version
        #
        # libssh uses cmake and doesn't support "make uninstall";
        # just remove what we know it installs.
        #
        # $DO_MAKE_UNINSTALL
        $DO_RM -rf "$installation_prefix"/lib/libssh* \
                   "$installation_prefix"/include/libssh \
                   "$installation_prefix"/lib/pkgconfig/libssh* \
                   "$installation_prefix"/lib/cmake/libssh
        #
        # libssh uses cmake and doesn't support "make distclean";
        # just remove the entire build directory.
        #
        # make distclean
        rm -rf build
        cd ..
        rm libssh-$installed_libssh_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf libssh-$installed_libssh_version
            rm -rf libssh-$installed_libssh_version.tar.gz
        fi

        installed_libssh_version=""
    fi
}

install_nghttp2() {
    if [ "$NGHTTP2_VERSION" -a ! -f nghttp2-$NGHTTP2_VERSION-done ] ; then
        echo "Downloading, building, and installing nghttp2:"
        [ -f nghttp2-$NGHTTP2_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://github.com/nghttp2/nghttp2/releases/download/v$NGHTTP2_VERSION/nghttp2-$NGHTTP2_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat nghttp2-$NGHTTP2_VERSION.tar.xz | tar xf -
        cd nghttp2-$NGHTTP2_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}" --enable-lib-only
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch nghttp2-$NGHTTP2_VERSION-done
    fi
}

uninstall_nghttp2() {
    if [ -n "$installed_nghttp2_version" ] ; then
        echo "Uninstalling nghttp2:"
        cd nghttp2-$installed_nghttp2_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm nghttp2-$installed_nghttp2_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf nghttp2-$installed_nghttp2_version
            rm -rf nghttp2-$installed_nghttp2_version.tar.xz
        fi

        installed_nghttp2_version=""
    fi
}

install_nghttp3() {
    if [ "$NGHTTP3_VERSION" -a ! -f nghttp3-$NGHTTP3_VERSION-done ] ; then
        echo "Downloading, building, and installing nghttp3:"
        [ -f nghttp3-$NGHTTP3_VERSION.tar.xz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://github.com/ngtcp2/nghttp3/releases/download/v$NGHTTP3_VERSION/nghttp3-$NGHTTP3_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        xzcat nghttp3-$NGHTTP3_VERSION.tar.xz | tar xf -
        cd nghttp3-$NGHTTP3_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}" --enable-lib-only
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch nghttp3-$NGHTTP3_VERSION-done
    fi
}

uninstall_nghttp3() {
    if [ -n "$installed_nghttp3_version" ] ; then
        echo "Uninstalling nghttp3:"
        cd nghttp3-$installed_nghttp3_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm nghttp3-$installed_nghttp3_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf nghttp3-$installed_nghttp3_version
            rm -rf nghttp3-$installed_nghttp3_version.tar.xz
        fi

        installed_nghttp3_version=""
    fi
}

install_libtiff() {
    if [ "$LIBTIFF_VERSION" -a ! -f tiff-$LIBTIFF_VERSION-done ] ; then
        echo "Downloading, building, and installing libtiff:"
        [ -f tiff-$LIBTIFF_VERSION.tar.gz ] ||
            curl "${CURL_REMOTE_NAME_OPTS[@]}" https://download.osgeo.org/libtiff/tiff-$LIBTIFF_VERSION.tar.gz     ||
            curl "${CURL_REMOTE_NAME_OPTS[@]}" https://download.osgeo.org/libtiff/old/tiff-$LIBTIFF_VERSION.tar.gz ||
            exit 1
        $no_build && echo "Skipping installation" && return
        gzcat tiff-$LIBTIFF_VERSION.tar.gz | tar xf -
        cd tiff-$LIBTIFF_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch tiff-$LIBTIFF_VERSION-done
    fi
}

uninstall_libtiff() {
    if [ -n "$installed_libtiff_version" ] ; then
        echo "Uninstalling libtiff:"
        cd tiff-$installed_libtiff_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm tiff-$installed_libtiff_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf tiff-$installed_libtiff_version
            rm -rf tiff-$installed_libtiff_version.tar.gz
        fi

        installed_libtiff_version=""
    fi
}

install_spandsp() {
    if [ "$SPANDSP_VERSION" -a ! -f spandsp-$SPANDSP_VERSION-done ] ; then
        echo "Downloading, building, and installing SpanDSP:"
        [ -f spandsp-$SPANDSP_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.soft-switch.org/downloads/spandsp/spandsp-$SPANDSP_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat spandsp-$SPANDSP_VERSION.tar.gz | tar xf -
        cd spandsp-$SPANDSP_VERSION
        #
        # Don't use -Wunused-but-set-variable, as it's not supported
        # by all the gcc versions in the versions of Xcode that we
        # support.
        #
        patch -p0 < "${topdir}/tools/macos-setup-patches/spandsp-configure-patch"
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch spandsp-$SPANDSP_VERSION-done
    fi
}

uninstall_spandsp() {
    if [ -n "$installed_spandsp_version" ] ; then
        echo "Uninstalling SpanDSP:"
        cd spandsp-$installed_spandsp_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm spandsp-$installed_spandsp_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf spandsp-$installed_spandsp_version
            rm -rf spandsp-$installed_spandsp_version.tar.gz
        fi

        installed_spandsp_version=""
    fi
}

install_speexdsp() {
    if [ "$SPEEXDSP_VERSION" -a ! -f speexdsp-$SPEEXDSP_VERSION-done ] ; then
        echo "Downloading, building, and installing SpeexDSP:"
        [ -f speexdsp-$SPEEXDSP_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://ftp.osuosl.org/pub/xiph/releases/speex/speexdsp-$SPEEXDSP_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat speexdsp-$SPEEXDSP_VERSION.tar.gz | tar xf -
        cd speexdsp-$SPEEXDSP_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch speexdsp-$SPEEXDSP_VERSION-done
    fi
}

uninstall_speexdsp() {
    if [ -n "$installed_speexdsp_version" ] ; then
        echo "Uninstalling SpeexDSP:"
        cd speexdsp-$installed_speexdsp_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm speexdsp-$installed_speexdsp_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf speexdsp-$installed_speexdsp_version
            rm -rf speexdsp-$installed_speexdsp_version.tar.gz
        fi

        installed_speexdsp_version=""
    fi
}

install_bcg729() {
    if [ "$BCG729_VERSION" -a ! -f bcg729-$BCG729_VERSION-done ] ; then
        echo "Downloading, building, and installing bcg729:"
        [ -f bcg729-$BCG729_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://gitlab.linphone.org/BC/public/bcg729/-/archive/$BCG729_VERSION/bcg729-$BCG729_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat bcg729-$BCG729_VERSION.tar.gz | tar xf -
        cd bcg729-$BCG729_VERSION
        mkdir build_dir
        cd build_dir
        "${DO_CMAKE[@]}" ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch bcg729-$BCG729_VERSION-done
    fi
}

uninstall_bcg729() {
    if [ -n "$installed_bcg729_version" ] ; then
        echo "Uninstalling bcg729:"
        cd bcg729-$installed_bcg729_version
        #
        # bcg729 uses cmake on macOS and doesn't support "make uninstall";
        # just remove what we know it installs.
        #
        # $DO_MAKE_UNINSTALL
        $DO_RM -rf "$installation_prefix"/share/Bcg729 \
                   "$installation_prefix"/lib/libbcg729* \
                   "$installation_prefix"/include/bcg729 \
                   "$installation_prefix"/lib/pkgconfig/libbcg729*
        #
        # bcg729 uses cmake on macOS and doesn't support "make distclean";
        # just remove the enire build directory.
        #
        # make distclean
        rm -rf build_dir
        cd ..
        rm bcg729-$installed_bcg729_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf bcg729-$installed_bcg729_version
            rm -rf bcg729-$installed_bcg729_version.tar.gz
        fi

        installed_bcg729_version=""
    fi
}

install_ilbc() {
    if [ -n "$ILBC_VERSION" ] && [ ! -f ilbc-$ILBC_VERSION-done ] ; then
        echo "Downloading, building, and installing iLBC:"
        [ -f libilbc-$ILBC_VERSION.tar.bz ] || curl --location --remote-name https://github.com/TimothyGu/libilbc/releases/download/v$ILBC_VERSION/libilbc-$ILBC_VERSION.tar.bz2
        $no_build && echo "Skipping installation" && return
        bzcat libilbc-$ILBC_VERSION.tar.bz2 | tar xf -
        cd libilbc-$ILBC_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch ilbc-$ILBC_VERSION-done
    fi
}

uninstall_ilbc() {
    if [ -n "$installed_ilbc_version" ] ; then
        echo "Uninstalling iLBC:"
        cd "libilbc-$installed_ilbc_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "ilbc-$installed_ilbc_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "libilbc-$installed_ilbc_version"
            rm -rf "libilbc-$installed_ilbc_version.tar.bz2"
        fi

        installed_ilbc_version=""
    fi
}

install_opencore_amr() {
    if [ "$OPENCORE_AMR_VERSION" ] && [ ! -f opencore-amr-$OPENCORE_AMR_VERSION-done ] ; then
        echo "Downloading, building, and installing opencore-amr:"
        [ -f opencore-amr-$OPENCORE_AMR_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://downloads.sourceforge.net/project/opencore-amr/opencore-amr/opencore-amr-$OPENCORE_AMR_VERSION.tar.gz
        echo "$OPENCORE_AMR_SHA256  opencore-amr-$OPENCORE_AMR_VERSION.tar.gz" | shasum --algorithm 256 --check
        $no_build && echo "Skipping installation" && return
        tar -xf opencore-amr-$OPENCORE_AMR_VERSION.tar.gz
        cd opencore-amr-$OPENCORE_AMR_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch opencore-amr-$OPENCORE_AMR_VERSION-done
    fi
}

uninstall_opencore_amr() {
    if [ -n "$installed_opencore_amr_version" ] ; then
        echo "Uninstalling opencore-amr:"
        cd "opencore-amr-$installed_opencore_amr_version"
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm "opencore-amr-$installed_opencore_amr_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "opencore-amr-$installed_opencore_amr_version"
            rm -rf "opencore-amr-$installed_opencore_amr_version.tar.gz"
        fi

        installed_opencore_amr_version=""
    fi
}

install_opus() {
    if [ "$OPUS_VERSION" -a ! -f opus-$OPUS_VERSION-done ] ; then
        echo "Downloading, building, and installing opus:"
        [ -f opus-$OPUS_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://downloads.xiph.org/releases/opus/opus-$OPUS_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat opus-$OPUS_VERSION.tar.gz | tar xf -
        cd opus-$OPUS_VERSION
        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ..
        touch opus-$OPUS_VERSION-done
    fi
}

uninstall_opus() {
    if [ -n "$installed_opus_version" ] ; then
        echo "Uninstalling opus:"
        cd opus-$installed_opus_version
        $DO_MAKE_UNINSTALL
        make distclean
        cd ..
        rm opus-$installed_opus_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf opus-$installed_opus_version
            rm -rf opus-$installed_opus_version.tar.gz
        fi

        installed_opus_version=""
    fi
}

install_jsoncpp() {
    if [ "$JSONCPP_VERSION" ] && [ ! -f "jsoncpp-$JSONCPP_VERSION-done" ] ; then
        echo "Downloading, building, and installing JsonCpp:"
        [ -f "jsoncpp-$JSONCPP_VERSION.tar.gz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" --remote-header-name "https://github.com/open-source-parsers/jsoncpp/archive/refs/tags/$JSONCPP_VERSION.tar.gz"
        $no_build && echo "Skipping installation" && return
        tar -xf "jsoncpp-$JSONCPP_VERSION.tar.gz"
        cd "jsoncpp-$JSONCPP_VERSION"
        mkdir build_dir
        cd build_dir
        "${DO_CMAKE[@]}" -DBUILD_OBJECT_LIBS=OFF -DBUILD_SHARED_LIBS=ON -DBUILD_STATIC_LIBS=OFF -DJSONCPP_WITH_POST_BUILD_UNITTEST=OFF ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch "jsoncpp-$JSONCPP_VERSION-done"
    fi
}

uninstall_jsoncpp() {
    if [ "$installed_jsoncpp_version" ] && [ -s "jsoncpp-$installed_jsoncpp_version/build_dir/install_manifest.txt" ] ; then
        echo "Uninstalling JsonCpp:"
        while read -r ; do $DO_RM -v "$REPLY" ; done < <(cat "jsoncpp-$installed_jsoncpp_version/build_dir/install_manifest.txt"; echo)
        rm "jsoncpp-$JSONCPP_VERSION-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "jsoncpp-$installed_jsoncpp_version"
            rm -rf "jsoncpp-$installed_jsoncpp_version.tar.gz"
        fi

        installed_jsoncpp_version=""
    fi
}

install_onetbb() {
    if [ "$ONETBB_VERSION" ] && [ ! -f "onetbb-$ONETBB_VERSION-done" ] ; then
        echo "Downloading, building, and installing oneTBB:"
        [ -f "oneTBB-$ONETBB_VERSION.tar.gz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" --remote-header-name "https://github.com/oneapi-src/oneTBB/archive/refs/tags/v$ONETBB_VERSION.tar.gz"
        $no_build && echo "Skipping installation" && return
        tar -xf "oneTBB-$ONETBB_VERSION.tar.gz"
        cd "oneTBB-$ONETBB_VERSION"
        mkdir build_dir
        cd build_dir
        "${DO_CMAKE[@]}" -DBUILD_SHARED_LIBS=ON -DTBB_TEST=OFF ..
        make "${MAKE_BUILD_OPTS[@]}" tbb
        $DO_MAKE_INSTALL
        cd ../..
        touch "onetbb-$ONETBB_VERSION-done"
    fi
}

uninstall_onetbb() {
    if [ "$installed_onetbb_version" ] && [ -s "oneTBB-$installed_onetbb_version/build_dir/install_manifest.txt" ] ; then
        echo "Uninstalling oneTBB:"
        while read -r ; do $DO_RM -v "$REPLY" ; done < <(cat "oneTBB-$installed_onetbb_version/build_dir/install_manifest.txt"; echo)
        rm "onetbb-$installed_onetbb_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "oneTBB-$installed_onetbb_version"
            rm -rf "oneTBB-$installed_onetbb_version.tar.gz"
        fi

        installed_onetbb_version=""
    fi
}

install_re2() {
    if [ "$RE2_VERSION" ] && [ ! -f "re2-$RE2_VERSION-done" ] ; then
        echo "Downloading, building, and installing RE2:"
        [ -f "re2-$RE2_VERSION.tar.gz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" --remote-header-name "https://github.com/google/re2/archive/refs/tags/$RE2_VERSION.tar.gz"
        $no_build && echo "Skipping installation" && return
        tar -xf "re2-$RE2_VERSION.tar.gz"
        cd "re2-$RE2_VERSION"
        mkdir build_dir
        cd build_dir
        "${DO_CMAKE[@]}" -DBUILD_SHARED_LIBS=ON -DRE2_BUILD_TESTING=OFF ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch "re2-$RE2_VERSION-done"
    fi
}

uninstall_re2() {
    if [ -n "$installed_re2_version" ] && [ -s "re2-$installed_re2_version/build_dir/install_manifest.txt" ] ; then
        echo "Uninstalling RE2:"
        while read -r ; do $DO_RM -v "$REPLY" ; done < <(cat "re2-$installed_re2_version/build_dir/install_manifest.txt"; echo)
        rm "re2-$installed_re2_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "re2-$installed_re2_version"
            rm -rf "re2-$installed_re2_version.tar.gz"
        fi

        installed_re2_version=""
    fi
}

install_falco_libs() {
    if [ "$FALCO_LIBS_VERSION" ] && [ ! -f "falco-libs-$FALCO_LIBS_VERSION-done" ] ; then
        echo "Downloading, building, and installing libsinsp and libscap:"
        [ -f "falco-libs-$FALCO_LIBS_VERSION.tar.gz" ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" --remote-header-name "https://github.com/falcosecurity/libs/archive/refs/tags/$FALCO_LIBS_VERSION.tar.gz"
        [ -f "falco-libs-$FALCO_LIBS_VERSION.tar.gz" ] || mv "libs-$FALCO_LIBS_VERSION.tar.gz" "falco-libs-$FALCO_LIBS_VERSION.tar.gz"
        $no_build && echo "Skipping installation" && return
        echo "$FALCO_LIBS_SHA256  falco-libs-$FALCO_LIBS_VERSION.tar.gz" | shasum --algorithm 256 --check
        tar -xf "falco-libs-$FALCO_LIBS_VERSION.tar.gz"
        mv "libs-$FALCO_LIBS_VERSION" "falco-libs-$FALCO_LIBS_VERSION"
        cd "falco-libs-$FALCO_LIBS_VERSION"
	patch -p1 < "${topdir}/tools/macos-setup-patches/falco-uthash_h-install.patch"
	patch -p1 < "${topdir}/tools/macos-setup-patches/falco-include-dirs.patch"
        mkdir build_dir
        cd build_dir
        "${DO_CMAKE[@]}" -DFALCOSECURITY_LIBS_VERSION="$FALCO_LIBS_VERSION" \
            -DBUILD_SHARED_LIBS=ON -DMINIMAL_BUILD=ON -DCREATE_TEST_TARGETS=OFF \
            -DUSE_BUNDLED_DEPS=ON -DUSE_BUNDLED_CARES=OFF -DUSE_BUNDLED_ZLIB=OFF \
            -DUSE_BUNDLED_JSONCPP=OFF -DUSE_BUNDLED_TBB=OFF -DUSE_BUNDLED_RE2=OFF \
            ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch "falco-libs-$FALCO_LIBS_VERSION-done"
    fi
}

uninstall_falco_libs() {
    if [ -n "$installed_falco_libs_version" ] && [ -s "falco-libs-$installed_falco_libs_version/build_dir/install_manifest.txt" ] ; then
        echo "Uninstalling Falco libs:"
        $DO_RM "$installation_prefix"/include/falcosecurity/uthash.h
        while read -r ; do $DO_RM -v "$REPLY" ; done < <(cat "falco-libs-$installed_falco_libs_version/build_dir/install_manifest.txt"; echo)
        rm "falco-libs-$installed_falco_libs_version-done"

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf "falco-libs-$installed_falco_libs_version"
            rm -rf "falco-libs-$installed_falco_libs_version.tar.gz"
        fi

        installed_falco_libs_version=""
    fi
}

install_python3() {
    # The macos11 universal2 installer can be deployed to older versions,
    # down to 10.9 (Mavericks). The 10.9 installer was deprecated in 3.9.8
    # and stopped being released after 3.9.13
    local macver=11
    if [ "$PYTHON3_VERSION" -a ! -f python3-$PYTHON3_VERSION-done ] ; then
        echo "Downloading and installing python3:"
        [ -f python-$PYTHON3_VERSION-macos$macver.pkg ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://www.python.org/ftp/python/$PYTHON3_VERSION/python-$PYTHON3_VERSION-macos$macver.pkg
        $no_build && echo "Skipping installation" && return
        sudo installer -target / -pkg python-$PYTHON3_VERSION-macos$macver.pkg
        touch python3-$PYTHON3_VERSION-done

        #
        # On macOS, the pip3 installed from Python packages appears to
        # install scripts /Library/Frameworks/Python.framework/Versions/M.N/bin,
        # where M.N is the major and minor version of Python (the dot-dot
        # release is irrelevant).
        #
        # Strip off any dot-dot component in $PYTHON3_VERSION.
        #
        python_version=$( echo "$PYTHON3_VERSION" | sed 's/\([1-9][0-9]*\.[1-9][0-9]*\).*/\1/' )
        #
        # Now treat Meson as being in the directory in question.
        #
        MESON="/Library/Frameworks/Python.framework/Versions/$python_version/bin/meson"
    else
        #
        # We're using the Python 3 that's in /usr/bin, the pip3 for
        # which installs scripts in /usr/local/bin, so, when we
        # install Meson, look for it there.
        #
        MESON=/usr/local/bin/meson
    fi
}

uninstall_python3() {
    # Major version (e.g. "3.7")
    local PYTHON_VERSION=${installed_python3_version%.*}
    if [ -n "$installed_python3_version" ] ; then
        echo "Uninstalling python3:"
        frameworkdir="/Library/Frameworks/Python.framework/Versions/$PYTHON_VERSION"
        sudo rm -rf "$frameworkdir"
        sudo rm -rf "/Applications/Python $PYTHON_VERSION"
        sudo find "$installation_prefix"/bin -maxdepth 1 -lname "*$frameworkdir/bin/*" -delete
        # Remove three symlinks and empty directories. Removing directories
        # might fail if for some reason multiple versions are installed.
        sudo rm    /Library/Frameworks/Python.framework/Headers
        sudo rm    /Library/Frameworks/Python.framework/Python
        sudo rm    /Library/Frameworks/Python.framework/Resources
        sudo rmdir /Library/Frameworks/Python.framework/Versions
        sudo rmdir /Library/Frameworks/Python.framework
        sudo pkgutil --forget org.python.Python.PythonApplications-$PYTHON_VERSION
        sudo pkgutil --forget org.python.Python.PythonDocumentation-$PYTHON_VERSION
        sudo pkgutil --forget org.python.Python.PythonFramework-$PYTHON_VERSION
        sudo pkgutil --forget org.python.Python.PythonUnixTools-$PYTHON_VERSION
        rm python3-$installed_python3_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -f python-$installed_python3_version-macos11.pkg
            rm -f python-$installed_python3_version-macos11.0.pkg
            rm -f python-$installed_python3_version-macosx10.9.pkg
            rm -f python-$installed_python3_version-macosx10.6.pkg
        fi

        installed_python3_version=""
    fi
}

install_brotli() {
    if [ "$BROTLI_VERSION" -a ! -f brotli-$BROTLI_VERSION-done ] ; then
        echo "Downloading, building, and installing brotli:"
        [ -f brotli-$BROTLI_VERSION.tar.gz ] || curl "${CURL_LOCAL_NAME_OPTS[@]}" brotli-$BROTLI_VERSION.tar.gz https://github.com/google/brotli/archive/v$BROTLI_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat brotli-$BROTLI_VERSION.tar.gz | tar xf -
        cd brotli-$BROTLI_VERSION
        mkdir build_dir
        cd build_dir
        "${DO_CMAKE[@]}" ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch brotli-$BROTLI_VERSION-done
    fi
}

uninstall_brotli() {
    if [ -n "$installed_brotli_version" ] ; then
        echo "Uninstalling brotli:"
        cd brotli-$installed_brotli_version
        #
        # brotli uses cmake on macOS and doesn't support "make uninstall";
        # just remove what we know it installs.
        #
        # $DO_MAKE_UNINSTALL
        $DO_RM -rf "$installation_prefix"/bin/brotli \
                   "$installation_prefix"/lib/libbrotli* \
                   "$installation_prefix"/include/brotli \
                   "$installation_prefix"/lib/pkgconfig/libbrotli*
        #
        # brotli uses cmake on macOS and doesn't support "make distclean";
        # just remove the enire build directory.
        #
        # make distclean
        rm -rf build_dir
        cd ..
        rm brotli-$installed_brotli_version-done

        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf brotli-$installed_brotli_version
            rm -rf brotli-$installed_brotli_version.tar.gz
        fi

        installed_brotli_version=""
    fi
}

install_minizip() {
    if [ "$ZLIB_VERSION" ] && [ ! -f minizip-$ZLIB_VERSION-done ] ; then
        echo "Downloading, building, and installing zlib for minizip:"
        [ -f zlib-$ZLIB_VERSION.tar.gz ] || curl "${CURL_LOCAL_NAME_OPTS[@]}" zlib-$ZLIB_VERSION.tar.gz https://zlib.net/fossils/zlib-$ZLIB_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat zlib-$ZLIB_VERSION.tar.gz | tar xf -
        #
        # minizip ships both with a minimal Makefile that doesn't
        # support "make install", "make uninstall", or "make distclean",
        # and with a Makefile.am file that, if we do an autoreconf,
        # gives us a configure script, and a Makefile.in that, if we run
        # the configure script, gives us a Makefile that supports all of
        # those targets, and that installs a pkg-config .pc file for
        # minizip.
        #
        # So that's what we do.
        #
        cd zlib-$ZLIB_VERSION/contrib/minizip
        LIBTOOLIZE=glibtoolize autoreconf --force --install
        CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" \
            ./configure "${CONFIGURE_OPTS[@]}"
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../../..
        touch minizip-$ZLIB_VERSION-done
    fi
}

uninstall_minizip() {
    if [ -n "$installed_minizip_version" ] ; then
        echo "Uninstalling minizip:"
        cd zlib-$installed_minizip_version/contrib/minizip
        $DO_MAKE_UNINSTALL
        make distclean
        cd ../../..

        rm minizip-$installed_minizip_version-done

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf zlib-$installed_minizip_version
            rm -rf zlib-$installed_minizip_version.tar.gz
        fi

        installed_minizip_version=""
    fi
}

install_minizip_ng() {
    if [ "$MINIZIPNG_VERSION" ] && [ ! -f minizip-ng-$MINIZIPNG_VERSION-done ] ; then
        echo "Downloading, building, and installing minizip-ng:"
        [ -f $MINIZIPNG_VERSION.tar.gz ] || curl "${CURL_REMOTE_NAME_OPTS[@]}" https://github.com/zlib-ng/minizip-ng/archive/refs/tags/$MINIZIPNG_VERSION.tar.gz
        $no_build && echo "Skipping installation" && return
        gzcat $MINIZIPNG_VERSION.tar.gz | tar xf -
        cd minizip-ng-$MINIZIPNG_VERSION
        mkdir build
        cd build
        "${DO_CMAKE[@]}" ..
        make "${MAKE_BUILD_OPTS[@]}"
        $DO_MAKE_INSTALL
        cd ../..
        touch minizip-ng-$MINIZIPNG_VERSION-done
    fi
}

uninstall_minizip_ng() {
    if [ -n "$installed_minizip_ng_version" ] ; then
        echo "Uninstalling minizip-ng:"
        cd minizip-ng-$installed_minizip_ng_version/contrib/minizip
        $DO_MAKE_UNINSTALL
        make distclean
        cd ../../..

        rm minizip-ng-$installed_minizip_ng_version-done

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            #
            # Get rid of the previously downloaded and unpacked version.
            #
            rm -rf minizip-ng-$installed_minizip_ng_version
            rm -rf minizip-ng-$installed_minizip_ng_version.tar.gz
        fi

        installed_minizip_ng_version=""
    fi
}
install_sparkle() {
    if [ "$SPARKLE_VERSION" ] && [ ! -f sparkle-$SPARKLE_VERSION-done ] ; then
        echo "Downloading and installing Sparkle:"
        #
        # Download the tarball and unpack it in $installation_prefix/Sparkle-x.y.z
        #
        [ -f Sparkle-$SPARKLE_VERSION.tar.xz ] || curl "${CURL_LOCAL_NAME_OPTS[@]}" Sparkle-$SPARKLE_VERSION.tar.xz https://github.com/sparkle-project/Sparkle/releases/download/$SPARKLE_VERSION/Sparkle-$SPARKLE_VERSION.tar.xz
        $no_build && echo "Skipping installation" && return
        test -d "$installation_prefix/Sparkle-$SPARKLE_VERSION" || sudo mkdir "$installation_prefix/Sparkle-$SPARKLE_VERSION"
        sudo tar -C "$installation_prefix/Sparkle-$SPARKLE_VERSION" -xpof Sparkle-$SPARKLE_VERSION.tar.xz
        touch sparkle-$SPARKLE_VERSION-done
    fi
}

uninstall_sparkle() {
    if [ -n "$installed_sparkle_version" ]; then
        echo "Uninstalling Sparkle:"
        sudo rm -rf "$installation_prefix/Sparkle-$installed_sparkle_version"

        rm sparkle-$installed_sparkle_version-done

        if [ "$#" -eq 1 ] && [ "$1" = "-r" ] ; then
            rm -f "Sparkle-$installed_sparkle_version.tar.xz"
        fi

        installed_sparkle_version=""
    fi
}

install_all() {
    #
    # Check whether the versions we have installed are the versions
    # requested; if not, uninstall the installed versions.
    #
    if [ -n "$installed_brotli_version" -a \
              "$installed_brotli_version" != "$BROTLI_VERSION" ] ; then
        echo "Installed brotli version is $installed_brotli_version"
        if [ -z "$BROTLI_VERSION" ] ; then
            echo "brotli is not requested"
        else
            echo "Requested brotli version is $BROTLI_VERSION"
        fi
        uninstall_brotli -r
    fi

    if [ -n "$installed_python3_version" -a \
              "$installed_python3_version" != "$PYTHON3_VERSION" ] ; then
        echo "Installed python3 version is $installed_python3_version"
        if [ -z "$PYTHON3_VERSION" ] ; then
            echo "python3 is not requested"
        else
            echo "Requested python3 version is $PYTHON3_VERSION"
        fi
        uninstall_python3 -r
    fi

    if [ -n "$installed_bcg729_version" -a \
              "$installed_bcg729_version" != "$BCG729_VERSION" ] ; then
        echo "Installed bcg729 version is $installed_bcg729_version"
        if [ -z "$BCG729_VERSION" ] ; then
            echo "bcg729 is not requested"
        else
            echo "Requested bcg729 version is $BCG729_VERSION"
        fi
        uninstall_bcg729 -r
    fi

    if [ -n "$installed_ilbc_version" ] \
              && [ "$installed_ilbc_version" != "$ILBC_VERSION" ] ; then
        echo "Installed iLBC version is $installed_ilbc_version"
        if [ -z "$ILBC_VERSION" ] ; then
            echo "iLBC is not requested"
        else
            echo "Requested iLBC version is $ILBC_VERSION"
        fi
        uninstall_ilbc -r
    fi

    if [ -n "$installed_opencore_amr_version" ] \
           && [ "$installed_opencore_amr_version" != "$OPENCORE_AMR_VERSION" ] ; then
        echo "Installed opencore-amr version is $installed_opencore_amr_version"
        if [ -z "$OPENCORE_AMR_VERSION" ] ; then
            echo "opencore-amr is not requested"
        else
            echo "Requested opencore-amr version is $OPENCORE_AMR_VERSION"
        fi
        uninstall_opencore_amr -r
    fi

    if [ -n "$installed_opus_version" ] \
           && [ "$installed_opus_version" != "$OPUS_VERSION" ] ; then
        echo "Installed opus version is $installed_opus_version"
        if [ -z "$OPUS_VERSION" ] ; then
            echo "opus is not requested"
        else
            echo "Requested opus version is $OPUS_VERSION"
        fi
        uninstall_opus -r
    fi

    if [ -n "$installed_spandsp_version" -a \
              "$installed_spandsp_version" != "$SPANDSP_VERSION" ] ; then
        echo "Installed SpanDSP version is $installed_spandsp_version"
        if [ -z "$SPANDSP_VERSION" ] ; then
            echo "spandsp is not requested"
        else
            echo "Requested SpanDSP version is $SPANDSP_VERSION"
        fi
        uninstall_spandsp -r
    fi

    if [ -n "$installed_speexdsp_version" -a \
              "$installed_speexdsp_version" != "$SPEEXDSP_VERSION" ] ; then
        echo "Installed SpeexDSP version is $installed_speexdsp_version"
        if [ -z "$SPEEXDSP_VERSION" ] ; then
            echo "speexdsp is not requested"
        else
            echo "Requested SpeexDSP version is $SPEEXDSP_VERSION"
        fi
        uninstall_speexdsp -r
    fi

    if [ -n "$installed_libtiff_version" -a \
              "$installed_libtiff_version" != "$LIBTIFF_VERSION" ] ; then
        echo "Installed libtiff version is $installed_libtiff_version"
        if [ -z "$LIBTIFF_VERSION" ] ; then
            echo "libtiff is not requested"
        else
            echo "Requested libtiff version is $LIBTIFF_VERSION"
        fi
        uninstall_libtiff -r
    fi

    if [ -n "$installed_nghttp2_version" -a \
              "$installed_nghttp2_version" != "$NGHTTP2_VERSION" ] ; then
        echo "Installed nghttp2 version is $installed_nghttp2_version"
        if [ -z "$NGHTTP2_VERSION" ] ; then
            echo "nghttp2 is not requested"
        else
            echo "Requested nghttp2 version is $NGHTTP2_VERSION"
        fi
        uninstall_nghttp2 -r
    fi

    if [ -n "$installed_nghttp3_version" -a \
              "$installed_nghttp3_version" != "$NGHTTP3_VERSION" ] ; then
        echo "Installed nghttp3 version is $installed_nghttp3_version"
        if [ -z "$NGHTTP3_VERSION" ] ; then
            echo "nghttp3 is not requested"
        else
            echo "Requested nghttp3 version is $NGHTTP3_VERSION"
        fi
        uninstall_nghttp3 -r
    fi

    if [ -n "$installed_libssh_version" -a \
              "$installed_libssh_version" != "$LIBSSH_VERSION" ] ; then
        echo "Installed libssh version is $installed_libssh_version"
        if [ -z "$LIBSSH_VERSION" ] ; then
            echo "libssh is not requested"
        else
            echo "Requested libssh version is $LIBSSH_VERSION"
        fi
        uninstall_libssh -r
    fi

    if [ -n "$installed_cares_version" -a \
              "$installed_cares_version" != "$CARES_VERSION" ] ; then
        echo "Installed C-Ares version is $installed_cares_version"
        if [ -z "$CARES_VERSION" ] ; then
            echo "C-Ares is not requested"
        else
            echo "Requested C-Ares version is $CARES_VERSION"
        fi
        uninstall_c_ares -r
    fi

    if [ -n "$installed_maxminddb_version" -a \
              "$installed_maxminddb_version" != "$MAXMINDDB_VERSION" ] ; then
        echo "Installed MaxMindDB API version is $installed_maxminddb_version"
        if [ -z "$MAXMINDDB_VERSION" ] ; then
            echo "MaxMindDB is not requested"
        else
            echo "Requested MaxMindDB version is $MAXMINDDB_VERSION"
        fi
        uninstall_maxminddb -r
    fi

    if [ -n "$installed_sbc_version" -a \
              "$installed_sbc_version" != "$SBC_VERSION" ] ; then
        echo "Installed SBC version is $installed_sbc_version"
        if [ -z "$SBC_VERSION" ] ; then
            echo "SBC is not requested"
        else
            echo "Requested SBC version is $SBC_VERSION"
        fi
        uninstall_sbc -r
    fi

    if [ -n "$installed_lz4_version" -a \
              "$installed_lz4_version" != "$LZ4_VERSION" ] ; then
        echo "Installed LZ4 version is $installed_lz4_version"
        if [ -z "$LZ4_VERSION" ] ; then
            echo "LZ4 is not requested"
        else
            echo "Requested LZ4 version is $LZ4_VERSION"
        fi
        uninstall_lz4 -r
    fi

    if [ -n "$installed_libxml2_version" ] && [ "$installed_libxml2_version" != "$LIBXML2_VERSION" ] ; then
        echo "Installed libxml2 version is $installed_libxml2_version"
        if [ -z "$LIBXML2_VERSION" ] ; then
            echo "libxml2 is not requested"
        else
            echo "Requested libxml2 version is $LIBXML2_VERSION"
        fi
        uninstall_libxml2 -r
    fi

    if [ -n "$installed_snappy_version" -a \
              "$installed_snappy_version" != "$SNAPPY_VERSION" ] ; then
        echo "Installed SNAPPY version is $installed_snappy_version"
        if [ -z "$SNAPPY_VERSION" ] ; then
            echo "SNAPPY is not requested"
        else
            echo "Requested SNAPPY version is $SNAPPY_VERSION"
        fi
        uninstall_snappy -r
    fi

    if [ -n "$installed_zstd_version" ] && [ "$installed_zstd_version" != "$ZSTD_VERSION" ] ; then
        echo "Installed zstd version is $installed_zstd_version"
        if [ -z "$ZSTD_VERSION" ] ; then
            echo "zstd is not requested"
        else
            echo "Requested zstd version is $ZSTD_VERSION"
        fi
        uninstall_zstd -r
    fi

    if [ -n "$installed_zlibng_version" ] && [ "$installed_zlibng_version" != "$ZLIBNG_VERSION" ] ; then
        echo "Installed zlibng version is $installed_zlibng_version"
        if [ -z "$ZLIBNG_VERSION" ] ; then
            echo "zlibng is not requested"
        else
            echo "Requested zlibng version is $ZLIBNG_VERSION"
        fi
        uninstall_zlibng -r
    fi

    if [ -n "$installed_lua_version" -a \
              "$installed_lua_version" != "$LUA_VERSION" ] ; then
        echo "Installed Lua version is $installed_lua_version"
        if [ -z "$LUA_VERSION" ] ; then
            echo "Lua is not requested"
        else
            echo "Requested Lua version is $LUA_VERSION"
        fi
        uninstall_lua -r
    fi

    if [ -n "$installed_gnutls_version" ] && [ "$installed_gnutls_version" != "$GNUTLS_VERSION" ] ; then
        echo "Installed GnuTLS version is $installed_gnutls_version"
        if [ -z "$GNUTLS_VERSION" ] ; then
            echo "GnuTLS is not requested"
        else
            echo "Requested GnuTLS version is $GNUTLS_VERSION"
        fi
        uninstall_gnutls -r
    fi

    if [ -n "$installed_nettle_version" -a \
              "$installed_nettle_version" != "$NETTLE_VERSION" ] ; then
        echo "Installed Nettle version is $installed_nettle_version"
        if [ -z "$NETTLE_VERSION" ] ; then
            echo "Nettle is not requested"
        else
            echo "Requested Nettle version is $NETTLE_VERSION"
        fi
        uninstall_nettle -r
    fi

    if [ -n "$installed_gmp_version" -a \
              "$installed_gmp_version" != "$GMP_VERSION" ] ; then
        echo "Installed GMP version is $installed_gmp_version"
        if [ -z "$GMP_VERSION" ] ; then
            echo "GMP is not requested"
        else
            echo "Requested GMP version is $GMP_VERSION"
        fi
        uninstall_gmp -r
    fi

    if [ -n "$installed_p11_kit_version" -a \
              "$installed_p11_kit_version" != "$P11KIT_VERSION" ] ; then
        echo "Installed p11-kit version is $installed_p11_kit_version"
        if [ -z "$P11KIT_VERSION" ] ; then
            echo "p11-kit is not requested"
        else
            echo "Requested p11-kit version is $P11KIT_VERSION"
        fi
        uninstall_p11_kit -r
    fi

    if [ -n "$installed_libtasn1_version" -a \
              "$installed_libtasn1_version" != "$LIBTASN1_VERSION" ] ; then
        echo "Installed libtasn1 version is $installed_libtasn1_version"
        if [ -z "$LIBTASN1_VERSION" ] ; then
            echo "libtasn1 is not requested"
        else
            echo "Requested libtasn1 version is $LIBTASN1_VERSION"
        fi
        uninstall_libtasn1 -r
    fi

    if [ -n "$installed_libgcrypt_version" -a \
              "$installed_libgcrypt_version" != "$LIBGCRYPT_VERSION" ] ; then
        echo "Installed libgcrypt version is $installed_libgcrypt_version"
        if [ -z "$LIBGCRYPT_VERSION" ] ; then
            echo "libgcrypt is not requested"
        else
            echo "Requested libgcrypt version is $LIBGCRYPT_VERSION"
        fi
        uninstall_libgcrypt -r
    fi

    if [ -n "$installed_libgpg_error_version" -a \
              "$installed_libgpg_error_version" != "$LIBGPG_ERROR_VERSION" ] ; then
        echo "Installed libgpg-error version is $installed_libgpg_error_version"
        if [ -z "$LIBGPG_ERROR_VERSION" ] ; then
            echo "libgpg-error is not requested"
        else
            echo "Requested libgpg-error version is $LIBGPG_ERROR_VERSION"
        fi
        uninstall_libgpg_error -r
    fi

    if [ -n "$installed_libsmi_version" -a \
              "$installed_libsmi_version" != "$LIBSMI_VERSION" ] ; then
        echo "Installed libsmi version is $installed_libsmi_version"
        if [ -z "$LIBSMI_VERSION" ] ; then
            echo "libsmi is not requested"
        else
            echo "Requested libsmi version is $LIBSMI_VERSION"
        fi
        uninstall_libsmi -r
    fi

    if [ -n "$installed_qt_version" -a \
              "$installed_qt_version" != "$QT_VERSION" ] ; then
        echo "Installed Qt version is $installed_qt_version"
        if [ -z "$QT_VERSION" ] ; then
            echo "Qt is not requested"
        else
            echo "Requested Qt version is $QT_VERSION"
        fi
        uninstall_qt -r
    fi

    if [ -n "$installed_glib_version" -a \
              "$installed_glib_version" != "$GLIB_VERSION" ] ; then
        echo "Installed GLib version is $installed_glib_version"
        if [ -z "$GLIB_VERSION" ] ; then
            echo "GLib is not requested"
        else
            echo "Requested GLib version is $GLIB_VERSION"
        fi
        uninstall_glib -r
    fi

    if [ -n "$installed_pkg_config_version" -a \
              "$installed_pkg_config_version" != "$PKG_CONFIG_VERSION" ] ; then
        echo "Installed pkg-config version is $installed_pkg_config_version"
        if [ -z "$PKG_CONFIG_VERSION" ] ; then
            echo "pkg-config is not requested"
        else
            echo "Requested pkg-config version is $PKG_CONFIG_VERSION"
        fi
        uninstall_pkg_config -r
    fi

    if [ -n "$installed_gettext_version" -a \
              "$installed_gettext_version" != "$GETTEXT_VERSION" ] ; then
        echo "Installed GNU gettext version is $installed_gettext_version"
        if [ -z "$GETTEXT_VERSION" ] ; then
            echo "GNU gettext is not requested"
        else
            echo "Requested GNU gettext version is $GETTEXT_VERSION"
        fi
        uninstall_gettext -r
    fi

    if [ -n "$installed_ninja_version" -a \
              "$installed_ninja_version" != "$NINJA_VERSION" ] ; then
        echo "Installed Ninja version is $installed_ninja_version"
        if [ -z "$NINJA_VERSION" ] ; then
            echo "Ninja is not requested"
        else
            echo "Requested Ninja version is $NINJA_VERSION"
        fi
        uninstall_ninja -r
    fi

    if [ -n "$installed_asciidoctorpdf_version" -a \
              "$installed_asciidoctorpdf_version" != "$ASCIIDOCTORPDF_VERSION" ] ; then
        echo "Installed Asciidoctor-pdf version is $installed_asciidoctorpdf_version"
        if [ -z "$ASCIIDOCTORPDF_VERSION" ] ; then
            echo "Asciidoctor-pdf is not requested"
        else
            echo "Requested Asciidoctor-pdf version is $ASCIIDOCTORPDF_VERSION"
        fi
        # XXX - really remove this?
        # Or should we remember it as installed only if this script
        # installed it?
        #
        uninstall_asciidoctorpdf -r
    fi

    if [ -n "$installed_asciidoctor_version" -a \
              "$installed_asciidoctor_version" != "$ASCIIDOCTOR_VERSION" ] ; then
        echo "Installed Asciidoctor version is $installed_asciidoctor_version"
        if [ -z "$ASCIIDOCTOR_VERSION" ] ; then
            echo "Asciidoctor is not requested"
        else
            echo "Requested Asciidoctor version is $ASCIIDOCTOR_VERSION"
        fi
        # XXX - really remove this?
        # Or should we remember it as installed only if this script
        # installed it?
        #
        uninstall_asciidoctor -r
    fi

    if [ -n "$installed_cmake_version" -a \
              "$installed_cmake_version" != "$CMAKE_VERSION" ] ; then
        echo "Installed CMake version is $installed_cmake_version"
        if [ -z "$CMAKE_VERSION" ] ; then
            echo "CMake is not requested"
        else
            echo "Requested CMake version is $CMAKE_VERSION"
        fi
        uninstall_cmake -r
    fi

    if [ -n "$installed_libtool_version" -a \
              "$installed_libtool_version" != "$LIBTOOL_VERSION" ] ; then
        echo "Installed GNU libtool version is $installed_libtool_version"
        if [ -z "$LIBTOOL_VERSION" ] ; then
            echo "GNU libtool is not requested"
        else
            echo "Requested GNU libtool version is $LIBTOOL_VERSION"
        fi
        uninstall_libtool -r
    fi

    if [ -n "$installed_automake_version" -a \
              "$installed_automake_version" != "$AUTOMAKE_VERSION" ] ; then
        echo "Installed GNU automake version is $installed_automake_version"
        if [ -z "$AUTOMAKE_VERSION" ] ; then
            echo "GNU automake is not requested"
        else
            echo "Requested GNU automake version is $AUTOMAKE_VERSION"
        fi
        uninstall_automake -r
    fi

    if [ -n "$installed_autoconf_version" -a \
              "$installed_autoconf_version" != "$AUTOCONF_VERSION" ] ; then
        echo "Installed GNU autoconf version is $installed_autoconf_version"
        if [ -z "$AUTOCONF_VERSION" ] ; then
            echo "GNU autoconf is not requested"
        else
            echo "Requested GNU autoconf version is $AUTOCONF_VERSION"
        fi
        uninstall_autoconf -r
    fi

    if [ -n "$installed_pcre_version" ] ; then
        echo "Installed pcre1 version is $installed_pcre_version"
        echo "(We no longer build with pcre1)"
        uninstall_pcre -r
    fi

    if [ -n "$installed_pcre2_version" -a \
              "$installed_pcre2_version" != "$PCRE2_VERSION" ] ; then
        echo "Installed pcre2 version is $installed_pcre2_version"
        if [ -z "$PCRE2_VERSION" ] ; then
            echo "pcre2 is not requested"
        else
            echo "Requested pcre2 version is $PCRE2_VERSION"
        fi
        uninstall_pcre2 -r
    fi

    if [ -n "$installed_lzip_version" ] ; then
        echo "Removing legacy install of lzip"
        uninstall_lzip -r
    fi

    if [ -n "$installed_xz_version" -a \
              "$installed_xz_version" != "$XZ_VERSION" ] ; then
        echo "Installed xz version is $installed_xz_version"
        if [ -z "$XZ_VERSION" ] ; then
            echo "xz is not requested"
        else
            echo "Requested xz version is $XZ_VERSION"
        fi
        uninstall_xz -r
    fi

    if [ -n "$installed_curl_version" -a \
              "$installed_curl_version" != "$CURL_VERSION" ] ; then
        echo "Installed curl version is $installed_curl_version"
        if [ -z "$CURL_VERSION" ] ; then
            echo "curl is not requested"
        else
            echo "Requested curl version is $CURL_VERSION"
        fi
        uninstall_curl -r
    fi

    if [ -n "$installed_minizip_version" -a \
              "$installed_minizip_version" != "$ZLIB_VERSION" ] ; then
        echo "Installed minizip (zlib) version is $installed_minizip_version"
        if [ -z "$ZLIB_VERSION" ] ; then
            echo "minizip is not requested"
        else
            echo "Requested minizip (zlib) version is $ZLIB_VERSION"
        fi
        uninstall_minizip -r
    fi

    if [ -n "$installed_minizip_ng_version" ] && [ "$installed_minizip_ng_version" != "$MINIZIPNG_VERSION" ] ; then
    echo "Installed minizip-ng version is $installed_minizip_ng_version"
    if [ -z "$MINIZIPNG_VERSION" ] ; then
        echo "minizip-ng is not requested"
    else
        echo "Requested minizip-ng version is $MINIZIPNG_VERSION"
    fi
    uninstall_minizip_ng -r
    fi

    if [ -n "$installed_sparkle_version" -a \
              "$installed_sparkle_version" != "$SPARKLE_VERSION" ] ; then
        echo "Installed Sparkle version is $installed_sparkle_version"
        if [ -z "$SPARKLE_VERSION" ] ; then
            echo "Sparkle is not requested"
        else
            echo "Requested Sparkle version is $SPARKLE_VERSION"
        fi
        uninstall_sparkle -r
    fi

    if [ "$installed_falco_libs_version" ] && [ "$installed_falco_libs_version" != "$FALCO_LIBS_VERSION" ] ; then
        echo "Installed Falco libs (libsinsp and libscap) version is $installed_falco_libs_version"
        if [ -z "$FALCO_LIBS_VERSION" ] ; then
            echo "Falco libs is not requested"
        else
            echo "Requested Falco libs version is $FALCO_LIBS_VERSION"
        fi
        uninstall_falco_libs -r
    fi

    if [ "$installed_jsoncpp_version" ] && [ "$installed_jsoncpp_version" != "$JSONCPP_VERSION" ] ; then
        echo "Installed JsonCpp version is $installed_jsoncpp_version"
        if [ -z "$JSONCPP_VERSION" ] ; then
            echo "JsonCpp is not requested"
        else
            echo "Requested JsonCpp version is $JSONCPP_VERSION"
        fi
        uninstall_jsoncpp -r
    fi

    if [ "$installed_onetbb_version" ] && [ "$installed_onetbb_version" != "$ONETBB_VERSION" ] ; then
        echo "Installed oneTBB version is $installed_onetbb_version"
        if [ -z "$ONETBB_VERSION" ] ; then
            echo "oneTBB is not requested"
        else
            echo "Requested oneTBB version is $ONETBB_VERSION"
        fi
        uninstall_onetbb -r
    fi

    if [ "$installed_re2_version" ] && [ "$installed_re2_version" != "$RE2_VERSION" ] ; then
        echo "Installed RE2 version is $installed_re2_version"
        if [ -z "$RE2_VERSION" ] ; then
            echo "RE2 is not requested"
        else
            echo "Requested RE2 version is $RE2_VERSION"
        fi
        uninstall_re2 -r
    fi

    #
    # Start with curl: we may need it to download and install xz.
    #
    install_curl

    #
    # Now install xz: it is the sole download format of glib later than 2.31.2.
    #
    install_xz

    install_m4

    install_autoconf

    install_automake

    install_libtool

    install_cmake

    install_pcre2

    #
    # Install Python 3 now; not only is it needed for the Wireshark
    # build process, it's also needed for the Meson build system,
    # which newer versions of GLib use as their build system.
    #
    install_python3

    #
    # Now install Meson and pytest.
    #
    install_meson

    install_pytest

    install_ninja

    install_asciidoctor

    install_asciidoctorpdf

    #
    # Start with GNU gettext; GLib requires it, and macOS doesn't have it
    # or a BSD-licensed replacement.
    #
    # At least on Lion with Xcode 4, _FORTIFY_SOURCE gets defined as 2
    # by default, which causes, for example, stpncpy to be defined as
    # a hairy macro that collides with the GNU gettext configure script's
    # attempts to workaround AIX's lack of a declaration for stpncpy,
    # with the result being a huge train wreck.  Define _FORTIFY_SOURCE
    # as 0 in an attempt to keep the trains on separate tracks.
    #
    install_gettext

    #
    # GLib depends on pkg-config and libxml2.
    # By default, pkg-config depends on GLib; we break the dependency cycle
    # by configuring pkg-config to use its own internal version of GLib.
    #
    install_pkg_config

    install_libxml2

    install_glib

    #
    # Now we have reached a point where we can build everything but
    # the GUI (Wireshark).
    #
    install_qt

    #
    # Now we have reached a point where we can build everything including
    # the GUI (Wireshark), but not with any optional features such as
    # SNMP OID resolution, some forms of decryption, Lua scripting, playback
    # of audio, or MaxMindDB mapping of IP addresses.
    #
    # We now conditionally download optional libraries to support them;
    # the default is to download them all.
    #

    install_libsmi

    install_libgpg_error

    install_libgcrypt

    install_gmp

    install_libtasn1

    install_p11_kit

    install_nettle

    install_gnutls

    install_lua

    install_snappy

    install_zstd

    install_zlibng

    install_lz4

    install_sbc

    install_maxminddb

    install_c_ares

    install_libssh

    install_nghttp2

    install_nghttp3

    install_libtiff

    install_spandsp

    install_speexdsp

    install_bcg729

    install_ilbc

    install_opencore_amr

    install_opus

    install_brotli

    install_minizip_ng

    install_minizip

    install_sparkle

    install_re2

    install_onetbb

    install_jsoncpp

    install_falco_libs
}

uninstall_all() {
    if [ -d "${MACOSX_SUPPORT_LIBS}" ]
    then
        cd "${MACOSX_SUPPORT_LIBS}"

        #
        # Uninstall items in the reverse order from the order in which they're
        # installed.  Only uninstall if the download/build/install process
        # completed; uninstall the version that appears in the name of
        # the -done file.
        #
        # We also do a "make distclean", so that we don't have leftovers from
        # old configurations.
        #
        uninstall_falco_libs

        uninstall_jsoncpp

        uninstall_onetbb

        uninstall_re2

        uninstall_sparkle

        uninstall_minizip

        uninstall_minizip_ng

        uninstall_brotli

        uninstall_opus

        uninstall_opencore_amr

        uninstall_ilbc

        uninstall_bcg729

        uninstall_speexdsp

        uninstall_spandsp

        uninstall_libtiff

        uninstall_nghttp2

        uninstall_nghttp3

        uninstall_libssh

        uninstall_c_ares

        uninstall_maxminddb

        uninstall_snappy

        uninstall_zstd

        uninstall_zlibng

        uninstall_lz4

        uninstall_sbc

        uninstall_lua

        uninstall_gnutls

        uninstall_nettle

        uninstall_p11_kit

        uninstall_libtasn1

        uninstall_gmp

        uninstall_libgcrypt

        uninstall_libgpg_error

        uninstall_libsmi

        uninstall_qt

        uninstall_glib

        uninstall_libxml2

        uninstall_pkg_config

        uninstall_gettext

        uninstall_ninja

        #
        # XXX - really remove this?
        # Or should we remember it as installed only if this script
        # installed it?
        #
        uninstall_asciidoctorpdf

        uninstall_asciidoctor

        uninstall_pytest

        uninstall_meson

        uninstall_python3

        uninstall_cmake

        uninstall_libtool

        uninstall_automake

        uninstall_autoconf

        uninstall_m4

        uninstall_pcre

        # Legacy, remove
        uninstall_lzip

        uninstall_xz

        uninstall_curl
    fi
}

# This script is meant to be run in the source root.  The following
# code will attempt to get you there, but is not perfect (particularly
# if someone copies the script).

topdir="$( pwd )/$( dirname "$0" )/.."
cd "$topdir"

# Preference of the support libraries directory:
#   ${MACOSX_SUPPORT_LIBS}
#   ../macosx-support-libs
#   ./macosx-support-libs (default if none exists)
if [ ! -d "${MACOSX_SUPPORT_LIBS}" ]; then
  unset MACOSX_SUPPORT_LIBS
fi
if [ -d ../macosx-support-libs ]; then
  MACOSX_SUPPORT_LIBS=${MACOSX_SUPPORT_LIBS-../macosx-support-libs}
else
  MACOSX_SUPPORT_LIBS=${MACOSX_SUPPORT_LIBS-./macosx-support-libs}
fi

#
# If we have SDKs available, the default target OS is the major version
# of the one we're running; get that and strip off the third component
# if present.
#
for i in /Developer/SDKs \
    /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs \
    /Library/Developer/CommandLineTools/SDKs
do
    if [ -d "$i" ]
    then
        min_osx_target=$( sw_vers -productVersion | sed 's/\([0-9]*\)\.\([0-9]*\)\.[0-9]*/\1.\2/' )
        break
    fi
done

#
# Parse command-line flags:
#
# -h - print help.
# -t <target> - build libraries so that they'll work on the specified
# version of macOS and later versions.
# -u - do an uninstall.
# -n - download all packages, but don't build or install.
#

no_build=false

installation_prefix=/usr/local

while getopts hnp:t:u name
do
    case $name in
    h|\?)
        echo "Usage: macos-setup.sh [ -n ] [ -p <installation prefix> ] [ -t <target> ] [ -u ]" 1>&1
        exit 0
        ;;
    n)
        no_build=true
        ;;
    p)
        installation_prefix="$OPTARG"
        ;;
    t)
        min_osx_target="$OPTARG"
        ;;
    u)
        do_uninstall=yes
        ;;
    esac
done

#
# Create our custom installation prefix if needed.
#
if [ "$installation_prefix" != "/usr/local" ] ; then
    export PATH="$installation_prefix/bin:$PATH"
    if [ ! -d "$installation_prefix" ] ; then
        echo "Creating $installation_prefix"
        $DO_MKDIR "$installation_prefix"
    fi
fi

#
# Do we have permission to write in $installation_prefix?
#
# If so, assume we have permission to write in its subdirectories.
# (If that's not the case, this test needs to check the subdirectories
# as well.)
#
# If not, do "make install", "make uninstall", "ninja install",
# "ninja uninstall", the removes for dependencies that don't support
# "make uninstall" or "ninja uninstall", the renames of [g]libtool*,
# and the writing of a libffi .pc file with sudo.
#
if [ -w "$installation_prefix" ]
then
    DO_MAKE="make"
    DO_MAKE_INSTALL="make install"
    DO_MAKE_UNINSTALL="make uninstall"
    DO_NINJA_INSTALL="ninja -C _build install"
    DO_NINJA_UNINSTALL="ninja -C _build uninstall"
    DO_TEE_TO_PC_FILE="tee"
    DO_RM="rm"
    DO_MV="mv"
else
    DO_MAKE="sudo make"
    DO_MAKE_INSTALL="sudo make install"
    DO_MAKE_UNINSTALL="sudo make uninstall"
    DO_NINJA_INSTALL="sudo ninja -C _build install"
    DO_NINJA_UNINSTALL="sudo ninja -C _build uninstall"
    DO_TEE_TO_PC_FILE="sudo tee"
    DO_RM="sudo rm"
    DO_MV="sudo mv"
fi

#
# When building with CMake, don't build libraries with an install path
# that begins with @rpath because that will cause binaries linked with it
# to use that path as the library to look for, and that will cause the
# run-time linker, at least on macOS 14 and later, not to find the library
# in $installation_prefix/lib unless you explicitly set DYLD_LIBRARY_PATH to include
# $installation_prefix/lib.  That means that you get "didn't find libpcre" errors if
# you try to run binaries from a build unless you set DYLD_LIBRARYPATH to
# include $installation_prefix/lib.
#
# However, setting CMAKE_MACOSX_RPATH to OFF causes the installed
# library just to have the file name of the library as its install
# name.  It needs to be the full installed path of the library in
# order to make running binaries from the build directory work, so
# we set CMAKE_INSTALL_NAME_DIR to $installation_prefix/lib.
#
# packaging/macosx/osx-app.sh will convert *all* libraries in
# the app bundle to have an @rpath install name, so this won't
# break anything there; it just fixes the ability to run from the
# build directory.
#
DO_CMAKE=( cmake
    -DCMAKE_OSX_DEPLOYMENT_TARGET="$min_osx_target"
    -DSDKROOT="$SDKPATH"
    -DCMAKE_MACOSX_RPATH=OFF
    -DCMAKE_INSTALL_PREFIX="$installation_prefix"
    -DCMAKE_INSTALL_NAME_DIR="$installation_prefix/lib"
    )

#
# Get the version numbers of installed packages, if any.
#
if [ -d "${MACOSX_SUPPORT_LIBS}" ]
then
    cd "${MACOSX_SUPPORT_LIBS}"

    installed_xz_version=$( ls xz-*-done 2>/dev/null | sed 's/xz-\(.*\)-done/\1/' )
    installed_lzip_version=$( ls lzip-*-done 2>/dev/null | sed 's/lzip-\(.*\)-done/\1/' )
    installed_pcre_version=$( ls pcre-*-done 2>/dev/null | sed 's/pcre-\(.*\)-done/\1/' )
    installed_pcre2_version=$( ls pcre2-*-done 2>/dev/null | sed 's/pcre2-\(.*\)-done/\1/' )
    installed_autoconf_version=$( ls autoconf-*-done 2>/dev/null | sed 's/autoconf-\(.*\)-done/\1/' )
    installed_automake_version=$( ls automake-*-done 2>/dev/null | sed 's/automake-\(.*\)-done/\1/' )
    installed_libtool_version=$( ls libtool-*-done 2>/dev/null | sed 's/libtool-\(.*\)-done/\1/' )
    installed_cmake_version=$( ls cmake-*-done 2>/dev/null | sed 's/cmake-\(.*\)-done/\1/' )
    installed_ninja_version=$( ls ninja-*-done 2>/dev/null | sed 's/ninja-\(.*\)-done/\1/' )
    installed_asciidoctor_version=$( ls asciidoctor-*-done 2>/dev/null | sed 's/asciidoctor-\(.*\)-done/\1/' )
    installed_asciidoctorpdf_version=$( ls asciidoctorpdf-*-done 2>/dev/null | sed 's/asciidoctorpdf-\(.*\)-done/\1/' )
    installed_gettext_version=$( ls gettext-*-done 2>/dev/null | sed 's/gettext-\(.*\)-done/\1/' )
    installed_pkg_config_version=$( ls pkg-config-*-done 2>/dev/null | sed 's/pkg-config-\(.*\)-done/\1/' )
    installed_glib_version=$( ls glib-*-done 2>/dev/null | sed 's/glib-\(.*\)-done/\1/' )
    installed_qt_version=$( ls qt-*-done 2>/dev/null | sed 's/qt-\(.*\)-done/\1/' )
    installed_libsmi_version=$( ls libsmi-*-done 2>/dev/null | sed 's/libsmi-\(.*\)-done/\1/' )
    installed_libgpg_error_version=$( ls libgpg-error-*-done 2>/dev/null | sed 's/libgpg-error-\(.*\)-done/\1/' )
    installed_libgcrypt_version=$( ls libgcrypt-*-done 2>/dev/null | sed 's/libgcrypt-\(.*\)-done/\1/' )
    installed_gmp_version=$( ls gmp-*-done 2>/dev/null | sed 's/gmp-\(.*\)-done/\1/' )
    installed_libtasn1_version=$( ls libtasn1-*-done 2>/dev/null | sed 's/libtasn1-\(.*\)-done/\1/' )
    installed_p11_kit_version=$( ls p11-kit-*-done 2>/dev/null | sed 's/p11-kit-\(.*\)-done/\1/' )
    installed_nettle_version=$( ls nettle-*-done 2>/dev/null | sed 's/nettle-\(.*\)-done/\1/' )
    installed_gnutls_version=$( ls gnutls-*-done 2>/dev/null | sed 's/gnutls-\(.*\)-done/\1/' )
    installed_lua_version=$( ls lua-*-done 2>/dev/null | sed 's/lua-\(.*\)-done/\1/' )
    installed_snappy_version=$( ls snappy-*-done 2>/dev/null | sed 's/snappy-\(.*\)-done/\1/' )
    installed_zstd_version=$( ls zstd-*-done 2>/dev/null | sed 's/zstd-\(.*\)-done/\1/' )
    installed_zlibng_version=$( ls zlibng-*-done 2>/dev/null | sed 's/zlibng-\(.*\)-done/\1/' )
    installed_libxml2_version=$( ls libxml2-*-done 2>/dev/null | sed 's/libxml2-\(.*\)-done/\1/' )
    installed_lz4_version=$( ls lz4-*-done 2>/dev/null | sed 's/lz4-\(.*\)-done/\1/' )
    installed_sbc_version=$( ls sbc-*-done 2>/dev/null | sed 's/sbc-\(.*\)-done/\1/' )
    installed_maxminddb_version=$( ls maxminddb-*-done 2>/dev/null | sed 's/maxminddb-\(.*\)-done/\1/' )
    installed_cares_version=$( ls c-ares-*-done 2>/dev/null | sed 's/c-ares-\(.*\)-done/\1/' )
    installed_libssh_version=$( ls libssh-*-done 2>/dev/null | sed 's/libssh-\(.*\)-done/\1/' )
    installed_nghttp2_version=$( ls nghttp2-*-done 2>/dev/null | sed 's/nghttp2-\(.*\)-done/\1/' )
    installed_nghttp3_version=$( ls nghttp3-*-done 2>/dev/null | sed 's/nghttp3-\(.*\)-done/\1/' )
    installed_libtiff_version=$( ls tiff-*-done 2>/dev/null | sed 's/tiff-\(.*\)-done/\1/' )
    installed_spandsp_version=$( ls spandsp-*-done 2>/dev/null | sed 's/spandsp-\(.*\)-done/\1/' )
    installed_speexdsp_version=$( ls speexdsp-*-done 2>/dev/null | sed 's/speexdsp-\(.*\)-done/\1/' )
    installed_bcg729_version=$( ls bcg729-*-done 2>/dev/null | sed 's/bcg729-\(.*\)-done/\1/' )
    installed_ilbc_version=$( ls ilbc-*-done 2>/dev/null | sed 's/ilbc-\(.*\)-done/\1/' )
    installed_opencore_amr_version=$( ls opencore-amr-*-done 2>/dev/null | sed 's/opencore-amr-\(.*\)-done/\1/' )
    installed_opus_version=$( ls opus-*-done 2>/dev/null | sed 's/opus-\(.*\)-done/\1/' )
    installed_python3_version=$( ls python3-*-done 2>/dev/null | sed 's/python3-\(.*\)-done/\1/' )
    installed_brotli_version=$( ls brotli-*-done 2>/dev/null | sed 's/brotli-\(.*\)-done/\1/' )
    installed_minizip_version=$( ls minizip-[0-9.]*-done 2>/dev/null | sed 's/minizip-\(.*\)-done/\1/' )
    installed_minizip_ng_version=$( ls minizip-ng-*-done 2>/dev/null | sed 's/minizip-ng-\(.*\)-done/\1/' )
    installed_sparkle_version=$( ls sparkle-*-done 2>/dev/null | sed 's/sparkle-\(.*\)-done/\1/' )

    cd "$topdir"
fi

if [ "$do_uninstall" = "yes" ]
then
    uninstall_all
    exit 0
fi

#
# Configure scripts tend to set CFLAGS and CXXFLAGS to "-g -O2" if
# invoked without CFLAGS or CXXFLAGS being set in the environment.
#
# However, we *are* setting them in the environment, for our own
# nefarious purposes, so start them out as "-g -O2".
#
export CFLAGS="-g -O2 -I$installation_prefix/include"
export CXXFLAGS="-g -O2 -I$installation_prefix/include"
export LDFLAGS="-L$installation_prefix/lib"
export PKG_CONFIG_PATH="$installation_prefix/lib/pkgconfig"

CONFIGURE_OPTS=( --prefix="$installation_prefix" )
# if no make options are present, set default options
# Should we just set MAKEFLAGS instead?
if [ -z "$MAKE_BUILD_OPTS" ] ; then
    # by default use 1.5x number of cores for parallel build
    MAKE_BUILD_OPTS=( -j $(( $(sysctl -n hw.logicalcpu) * 3 / 2)) )
fi

CURL_REMOTE_NAME_OPTS=(--fail-with-body --location --remote-name)
CURL_LOCAL_NAME_OPTS=(--fail-with-body --location --output)

#
# If we have a target release, look for the oldest SDK that's for an
# OS equal to or later than that one, and build libraries against it
# rather than against the headers and, more importantly, libraries
# that come with the OS, so that we don't end up with support libraries
# that only work on the OS version on which we built them, not earlier
# versions of the same release, or earlier releases if the minimum is
# earlier.
#
if [ -n "$min_osx_target" ]
then
    #
    # Get the major and minor version of the target release.
    # We assume it'll be a while before there's a macOS 100. :-)
    #
    case "$min_osx_target" in

    [1-9][0-9].*)
        #
        # major.minor.
        #
        min_osx_target_major=$( echo "$min_osx_target" | sed -n 's/\([1-9][0-9]*\)\..*/\1/p' )
        min_osx_target_minor=$( echo "$min_osx_target" | sed -n 's/[1-9][0-9]*\.\(.*\)/\1/p' )
        ;;

    [1-9][0-9])
        #
        # Just a major version number was specified; make the minor
        # version 0.
        #
        min_osx_target_major="$min_osx_target"
        min_osx_target_minor=0
        ;;

    *)
        echo "macosx-setup.sh: Invalid target release $min_osx_target" 1>&2
        exit 1
        ;;
    esac

    #
    # Search each directory that might contain SDKs.
    #
    sdkpath=""
    for sdksdir in /Developer/SDKs \
        /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs \
        /Library/Developer/CommandLineTools/SDKs
    do
        #
        # Get a list of all the SDKs.
        #
        if ! test -d "$sdksdir"
        then
            #
            # There is no directory with that name.
            # Move on to the next one in the list, if any.
            #
            continue
        fi

        #
        # Get a list of all the SDKs in that directory, if any.
        # We assume it'll be a while before there's a macOS 100. :-)
        #
        sdklist=$( (cd "$sdksdir"; ls -d MacOSX[1-9][0-9].[0-9]*.sdk 2>/dev/null) )

        for sdk in $sdklist
        do
            #
            # Get the major and minor version for this SDK.
            #
            sdk_major=$( echo "$sdk" | sed -n 's/MacOSX\([1-9][0-9]*\)\..*\.sdk/\1/p' )
            sdk_minor=$( echo "$sdk" | sed -n 's/MacOSX[1-9][0-9]*\.\(.*\)\.sdk/\1/p' )

            #
            # Is it for the deployment target or some later release?
            # Starting with major 11, the minor version no longer matters.
            #
            if test "$sdk_major" -gt "$min_osx_target_major" -o \
                \( "$sdk_major" -eq "$min_osx_target_major" -a \
                \( "$sdk_major" -ge 11 -o \
                   "$sdk_minor" -ge "$min_osx_target_minor" \) \)
            then
                #
                # Yes, use it.
                #
                sdkpath="$sdksdir/$sdk"
                break 2
            fi
        done
    done

    if [ -z "$sdkpath" ]
    then
        echo "macos-setup.sh: Couldn't find an SDK for macOS $min_osx_target or later" 1>&2
        exit 1
    fi

    SDKPATH="$sdkpath"
    echo "Using the $sdk_major.$sdk_minor SDK"

    #
    # Make sure there are links to $installation_prefix/include and $installation_prefix/lib
    # in the SDK's usr/local.
    #
    # XXX - Is this needed any more?
#     if [ ! -e $SDKPATH$installation_prefix/include ]
#     then
#         if [ ! -d $SDKPATH$installation_prefix ]
#         then
#             sudo mkdir $SDKPATH$installation_prefix
#         fi
#         sudo ln -s $installation_prefix/include $SDKPATH$installation_prefix/include
#     fi
#     if [ ! -e $SDKPATH$installation_prefix/lib ]
#     then
#         if [ ! -d $SDKPATH$installation_prefix ]
#         then
#             sudo mkdir $SDKPATH$installation_prefix
#         fi
#         sudo ln -s $installation_prefix/lib $SDKPATH$installation_prefix/lib
#     fi

    #
    # Set the minimum OS version for which to build to the specified
    # minimum target OS version, so we don't, for example, end up using
    # linker features supported by the OS version on which we're building
    # but not by the target version.
    #
    VERSION_MIN_FLAGS="-mmacosx-version-min=$min_osx_target"

    #
    # Compile and link against the SDK.
    #
    SDKFLAGS="-isysroot $SDKPATH"

fi

#
# You need Xcode or the command-line tools installed to get the compilers (xcrun checks both).
#
 if [ ! -x /usr/bin/xcrun ]; then
    echo "Please install Xcode (app or command line) first (should be available from the Mac App Store)."
    exit 1
fi

if [ "$QT_VERSION" ]; then
    #
    # We need Xcode, not just the command-line tools, installed to build
    # Qt.
    #
    # At least with Xcode 8, /usr/bin/xcodebuild --help fails if only
    # the command-line tools are installed and succeeds if Xcode is
    # installed.  Unfortunately, it fails *with* Xcode 3, but
    # /usr/bin/xcodebuild -version works with that and with Xcode 8.
    # Hopefully it fails with only the command-line tools installed.
    #
    if /usr/bin/xcodebuild -version >/dev/null 2>&1; then
        :
    elif qmake --version >/dev/null 2>&1; then
        :
    else
        echo "Please install Xcode first (should be available from the Mac App Store)."
        echo "The command-line build tools are not sufficient to build Qt."
        echo "Alternatively build QT according to: https://gist.github.com/shoogle/750a330c851bd1a924dfe1346b0b4a08#:~:text=MacOS%2FQt%5C%20Creator-,Go%20to%20Qt%20Creator%20%3E%20Preferences%20%3E%20Build%20%26%20Run%20%3E%20Kits,for%20both%20compilers%2C%20not%20gcc%20."
        exit 1
    fi
fi

#
# Do all the downloads and untarring in a subdirectory, so all that
# stuff can be removed once we've installed the support libraries.

if [ ! -d "${MACOSX_SUPPORT_LIBS}" ]
then
    mkdir "${MACOSX_SUPPORT_LIBS}"
fi
cd "${MACOSX_SUPPORT_LIBS}"

install_all

echo ""

#
# Indicate what paths to use for pkg-config and cmake.
#
if [ "$QT_VERSION" ]; then
    qt_base_path=$HOME/Qt$QT_VERSION/$QT_VERSION/clang_64
    # CMAKE_PREFIX_PATH="$PACKAGE_CONFIG_PATH:$qt_base_path/lib/cmake"
fi

if $no_build; then
    echo "All required dependencies downloaded. Run without -n to install them."
    exit 0
fi

if [ "$QT_VERSION" ]; then
    if [ -f "qt-$QT_VERSION-done" ]; then
        echo "You are now prepared to build Wireshark."
    else
        echo "Qt was not installed; you will have to install it in order to build the"
        echo "Wireshark application, but you can build all the command-line tools in"
        echo "the Wireshark distribution."
        echo ""
        echo "See section 2.1.1. \"Build environment setup\" of the Wireshark Developer's"
        echo "Guide for instructions on how to install Qt."
    fi
else
    echo "You did not install Qt; you will have to install it in order to build"
    echo "the Wireshark application, but you can build all the command-line tools in"
    echo "the Wireshark distribution."
fi
echo
echo "To build:"
echo
echo "export PATH=$PATH:$qt_base_path/bin"
echo
echo "mkdir build; cd build"
if [ -n "$NINJA_VERSION" ]; then
    echo "cmake -G Ninja .."
    echo "ninja wireshark_app_bundle stratoshark_app_bundle # (Modify as needed)"
    echo "ninja install/strip"
else
    echo "cmake .."
    echo "make ${MAKE_BUILD_OPTS[*]} wireshark_app_bundle stratoshark_app_bundle # (Modify as needed)"
    echo "make install/strip"
fi
echo
echo "Make sure you are allowed capture access to the network devices"
echo "See: https://gitlab.com/wireshark/wireshark/-/wikis/CaptureSetup/CapturePrivileges"
echo

exit 0