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#!/bin/bash
# Allow user overrides of configuration options.
#
# Oracle Linux DTrace.
# Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
# Licensed under the Universal Permissive License v 1.0 as shown at
# http://oss.oracle.com/licenses/upl.
set -e
# We write everything to temporary files first, then rename them atomically
# into their final resting places once everything has completed, to avoid
# partial results in case of error.
# config-vars.mk is cheap to reproduce, so it's written out as a unit.
write_make_var()
{
local val="$(printf "%s" "$2" | sed 's,^.*=,,')"
if [[ ! -f build/.config-vars.mk.new ]]; then
echo '# This file is automatically generated.' > build/.config-vars.mk.new
fi
printf '%s=%s\n' $1 "$val" >> build/.config-vars.mk.new
printf "override CONFIGURED_VARS+=%s\n" $1 >> build/.config-vars.mk.new
}
# Write out build/.config/*.mk and build/.config/*.h, which are the same
# things written out by the Makeconfig fragments: each corresponds to one
# test, to minimize test reinvocations, since config.mk tests can be quite
# expensive to run.
write_config_var()
{
local val="$(printf "%s" "$2" | sed 's,^.*=,,')"
if [[ ! -d build/.config.new ]]; then
mkdir -p build/.config.new
touch build/.config.new/.dir.stamp
fi
case $val in
no) printf '# HAVE_%s undefined\n' $1 > build/.config.new/config.$1.mk
printf '/* #undef HAVE_%s */\n' $1 > build/.config.new/config.$1.h;;
yes|'') printf 'HAVE_%s=y\n' $1 > build/.config.new/config.$1.mk
printf '#define HAVE_%s 1\n' $1 > build/.config.new/config.$1.h;;
esac
}
help()
{
cat >&2 <<'EOF'
Installation paths:
--prefix=/usr Prefix of all installed paths
--objdir=build Build directory
--libdir=PREFIX/lib64 Library directory
--bindir=PREFIX/sbin Binary directory
--sbindir=PREFIX/sbin Alias for --bindir
--includedir=PREFIX/include #include directory
--mandir=PREFIX/share/man Manpage directory
--pkg-config-dir=PREFIX/share/pkgconfig Pkg-config directory
--udevdir=PREFIX/lib/udev/rules.d udev rules directory
--systemd-unit-dir=PREFIX/lib/systemd/system systemd unit directory
--docdir=PREFIX/share/doc/dtrace Documentation directory
--testdir=LIBDIR/dtrace/testsuite Testsuite install directory
--infodir=PREFIX/share/info Info documentation directory
--sysconfdir=PREFIX/etc System configuration directory
--localstatedir=PREFIX/var Runtime system data directory
--runstatedir=PREFIX/var/run Per-process data directory
Options relating to the user environment (may need customization on
some systems, see GNUmakefile)
--user-uid=UID The first non-system uid on the system
--dumpcap-group=GROUP Group one must run as to invoke $DUMPCAP
--unpriv-uid=UID A uid suitable for unprivileged processes;
may be negative
--unpriv-home=/run/initramfs Non-writable directory to use as $HOME for
unprivileged processes
Options relating to kernels (for local builds against a running kernel
built locally, none of these should be needed):
--kernels="6.1 6.2 6.3" Space-separated list of kernel versions to
produce translators for
--kernel-mod-dir=DIR Directory used to search for kernel build trees
(default "/lib/modules")
--kernel-src-dir=DIR Source location of kernel tree for local builds
--kernel-obj-dir=DIR Kernel object directory (as passed to O=)
--kernel-src-suffix=DIR If --kernel-src-dir is not set, suffix of kernel
source directory (after kernel version) (default
"source"); seen under /lib/modules
--kernel-obj-suffix=DIR If --kernel-obj-dir is not set, suffix of kernel
object directory (after kernel version) (default
"build"); seen under /lib/modules
EOF
make help-overrides-header help-overrides-option
cat >&2 <<'EOF'
--with-systemd=[yes/no] Install the systemd unit files (default: yes)
EOF
echo >&2
make help-overrides
cat >&2 <<'EOF'
Optional features:
--disable-option-checking Ignore unrecognized --enable/--with options
--disable-dependency-tracking Suppress automatic dependency tracking
Options controlling the compiler (pass on the command line):
CC C compiler (may be a cross-compiler)
CPP Preprocessor, by default $(CC) -E
CPPFLAGS Preprocessor flags
CFLAGS Compiler flags
LDFLAGS Linker flags
BPFC Cross-compiler to BPF
BPFCPPFLAGS BPF C preprocessor flags
BPFCFLAGS BPF C compiler flags
BPFLD BPF linker
If passed to configure as command-line arguments, all the variables
above stick for future make invocations until "make clean".
EOF
}
[[ ! -d build ]] && mkdir -p build
rm -rf build/.config.new build/.config-vars.mk.new
echo 'override CONFIGURED_VARS=' > build/.config-vars.mk.new
trap 'rm -rf build/.config.new build/.config-vars.mk.new' ERR
# Should we report unknown --disable/enable/with/without-* options?
if echo " $@ " | grep ' --disable-option-checking ' &>/dev/null; then
no_check_opts=t
fi
for option in "$@"; do
case "$option" in
--help) help; exit 1;;
--prefix=*) write_make_var prefix "$option";;
--objdir=*) write_make_var objdir "$option";;
--libdir=*) write_make_var LIBDIR "$option";;
--bindir=*) write_make_var SBINDIR "$option";;
--sbindir=*) write_make_var SBINDIR "$option";;
--includedir=*) write_make_var INCLUDEDIR "$option";;
--udevdir=*) write_make_var UDEVDIR "$option";;
--systemd-unit-dir=*) write_make_var SYSTEMDUNITDIR "$option";;
--docdir=*) write_make_var DOCDIR "$option";;
--mandir=*) write_make_var MANDIR "$option";;
--pkg-config-dir=*) write_make_var PKGCONFIGDIR "$option";;
--testdir=*) write_make_var TESTDIR "$option";;
--infodir=*) write_make_var INFODIR "$option";;
--sysconfdir=*) write_make_var SYSCONFDIR "$option";;
--localstatedir=*) write_make_var LOCALSTATEDIR "$option";;
--runstatedir=*) write_make_var RUNSTATEDIR "$option";;
CC=*) write_make_var CC "$option";;
CPP=*) write_make_var PREPROCESS "$option";;
CFLAGS=*) write_make_var CFLAGS "$option";;
CPPFLAGS=*) write_make_var CPPFLAGS "$option";;
LDFLAGS=*) write_make_var LDFLAGS "$option";;
BPFC=*) write_make_var BPFC "$option";;
BPFCPPFLAGS=*) write_make_var BPFCPPFLAGS "$option";;
BPFCFLAGS=*) write_make_var BPFCFLAGS "$option";;
BPFLD=*) write_make_var BPFLD "$option";;
--user-uid=*) write_make_var USER_UID "$option";;
--dumpcap-group=*) write_make_var DUMPCAP_GROUP "$option";;
--unpriv-uid=*) write_make_var UNPRIV_UID "$option";;
--unpriv-home=*) write_make_var UNPRIV_HOME "$option";;
--kernels=*) write_make_var KERNELS "$option";;
--kernel-mod-dir=*) write_make_var KERNELMODDIR "$option";;
--kernel-src-dir=*) write_make_var KERNELSRCDIR "$option";;
--kernel-obj-dir=*) write_make_var KERNELOBJDIR "$option";;
--kernel-src-suffix=*) write_make_var KERNELSRCNAME "$option";;
--kernel-obj-suffix=*) write_make_var KERNELBLDNAME "$option";;
--with-systemd|--with-systemd=y*) write_make_var WITH_SYSTEMD "y";;
--with-systemd=n*|--without-systemd) write_make_var WITH_SYSTEMD "";;
HAVE_ELF_GETSHDRSTRNDX=*) write_config_var ELF_GETSHDRSTRNDX "$option";;
--with-libctf=*) write_config_var LIBCTF "$option";;
HAVE_LIBCTF=*) write_config_var LIBCTF "$option";;
HAVE_STRRSTR=*) write_config_var STRRSTR "$option";;
HAVE_FUSE_LOG=*) write_config_var FUSE_LOG "$option";;
--with-libfuse3=*) write_config_var LIBFUSE3 "$option";;
HAVE_LIBFUSE3=*) write_config_var LIBFUSE3 "$option";;
HAVE_FUSE_NUMA=*) write_config_var FUSE_NUMA "$option";;
HAVE_CLOSE_RANGE=*) write_config_var CLOSE_RANGE "$option";;
HAVE_GETTID=*) write_config_var GETTID "$option";;
HAVE_VALGRIND=*) write_config_var VALGRIND "$option";;
HAVE_BPFV3=*) write_config_var BPFV3 "$option";;
HAVE_BPFMASM=*) write_config_var BPFMASM "$option";;
--disable-dependency-tracking) write_make_var WITHOUT_DEPENDENCIES "y";;
--enable-dependency-tracking) write_make_var WITHOUT_DEPENDENCIES "n";;
--disable-*|--enable-*|--with-*|--without-*)
if [[ -z $no_check_opts ]]; then
echo "Unknown option $option" >&2
exit 1
fi;;
*) echo "Unknown option $option" >&2;;
esac
done
echo 'Writing build/config-vars.mk'
rm -f build/config-vars.mk
mv -f build/.config-vars.mk.new build/config-vars.mk
rm -rf build/.config
[[ ! -d build/.config.new ]] && \
mkdir -p build/.config.new && \
touch build/.config.new/empty.h build/.config.new/empty.mk
mv -f build/.config.new build/.config
# Arrange for build/config.{h,mk} to exist as soon as this
# script ends, so that users can see that the files we said we
# wrote out are actually written out. Don't use the makefile
# rules, to avoid having to wait for configuration test
# runs that are not needed at this stage.
echo 'Writing build/config.{h,mk}'
rm -f build/config.h build/config.mk
cat build/.config/*.h > build/config.h
cat build/.config/*.mk > build/config.mk
exit 0
|
