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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_path_generic.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PATH_GENERIC(LIBRARY,[MINIMUM-VERSION,[SED-EXPR-EXTRACTOR]],[ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],[CONFIG-SCRIPTS],[CFLAGS-ARG],[LIBS-ARG])
#
# DESCRIPTION
#
# Runs the LIBRARY-config script and defines LIBRARY_CFLAGS and
# LIBRARY_LIBS unless the user had predefined them in the environment.
#
# The script must support `--cflags' and `--libs' args. If MINIMUM-VERSION
# is specified, the script must also support the `--version' arg. If the
# `--with-library-[exec-]prefix' arguments to ./configure are given, it
# must also support `--prefix' and `--exec-prefix'. Preferably use
# CONFIG-SCRIPTS as config script, CFLAGS-ARG instead of `--cflags` and
# LIBS-ARG instead of `--libs`, if given.
#
# The SED-EXPR-EXTRACTOR parameter represents the expression used in sed
# to extract the version number. Use it if your 'foo-config --version'
# dumps something like 'Foo library v1.0.0 (alfa)' instead of '1.0.0'.
#
# The macro respects LIBRARY_CONFIG, LIBRARY_CFLAGS and LIBRARY_LIBS
# variables. If the first one is defined, it specifies the name of the
# config script to use. If the latter two are defined, the script is not
# ran at all and their values are used instead (if only one of them is
# defined, the empty value of the remaining one is still used).
#
# Example:
#
# AX_PATH_GENERIC(Foo, 1.0.0)
#
# would run `foo-config --version' and check that it is at least 1.0.0, if
# successful the following variables would be defined and substituted:
#
# FOO_CFLAGS to `foo-config --cflags`
# FOO_LIBS to `foo-config --libs`
#
# Example:
#
# AX_PATH_GENERIC([Bar],,,[
# AC_MSG_ERROR([Cannot find Bar library])
# ])
#
# would check for bar-config program, defining and substituting the
# following variables:
#
# BAR_CFLAGS to `bar-config --cflags`
# BAR_LIBS to `bar-config --libs`
#
# Example:
#
# ./configure BAZ_LIBS=/usr/lib/libbaz.a
#
# would link with a static version of baz library even if `baz-config
# --libs` returns just "-lbaz" that would normally result in using the
# shared library.
#
# This macro is a rearranged version of AC_PATH_GENERIC from Angus Lees.
#
# LICENSE
#
# Copyright (c) 2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 17
AU_ALIAS([AC_PATH_GENERIC], [AX_PATH_GENERIC])
AC_DEFUN([AX_PATH_GENERIC],[
AC_REQUIRE([AC_PROG_SED])
dnl we're going to need uppercase and lowercase versions of the
dnl string `LIBRARY'
pushdef([UP], translit([$1], [a-z], [A-Z]))dnl
pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
AC_ARG_WITH(DOWN-prefix,[AS_HELP_STRING([--with-]DOWN[-prefix=PREFIX], [Prefix where $1 is installed (optional)])],
DOWN[]_config_prefix="$withval", DOWN[]_config_prefix="")
AC_ARG_WITH(DOWN-exec-prefix,[AS_HELP_STRING([--with-]DOWN[-exec-prefix=EPREFIX], [Exec prefix where $1 is installed (optional)])],
DOWN[]_config_exec_prefix="$withval", DOWN[]_config_exec_prefix="")
AC_ARG_VAR(UP[]_CONFIG, [config script used for $1])
AC_ARG_VAR(UP[]_CFLAGS, [CFLAGS used for $1])
AC_ARG_VAR(UP[]_LIBS, [LIBS used for $1])
AS_IF([test x"$UP[]_CFLAGS" != x -o x"$UP[]_LIBS" != x],[
dnl Don't run config script at all, use user-provided values instead.
AC_SUBST(UP[]_CFLAGS)
AC_SUBST(UP[]_LIBS)
:
$4
],[
AS_IF([test x$DOWN[]_config_exec_prefix != x],[
DOWN[]_config_args="$DOWN[]_config_args --exec-prefix=$DOWN[]_config_exec_prefix"
AS_IF([test x${UP[]_CONFIG+set} != xset],[
UP[]_CONFIG=$DOWN[]_config_exec_prefix/bin/DOWN-config
])
])
AS_IF([test x$DOWN[]_config_prefix != x],[
DOWN[]_config_args="$DOWN[]_config_args --prefix=$DOWN[]_config_prefix"
AS_IF([test x${UP[]_CONFIG+set} != xset],[
UP[]_CONFIG=$DOWN[]_config_prefix/bin/DOWN-config
])
])
AC_PATH_PROGS(UP[]_CONFIG,[$6 DOWN-config],[no])
AS_IF([test "$UP[]_CONFIG" = "no"],[
:
$5
],[
dnl Get the CFLAGS from LIBRARY-config script
AS_IF([test x"$7" = x],[
UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args --cflags`"
],[
UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args $7`"
])
dnl Get the LIBS from LIBRARY-config script
AS_IF([test x"$8" = x],[
UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args --libs`"
],[
UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args $8`"
])
AS_IF([test x"$2" != x],[
dnl Check for provided library version
AS_IF([test x"$3" != x],[
dnl Use provided sed expression
DOWN[]_version="`$UP[]_CONFIG $DOWN[]_config_args --version | $SED -e $3`"
],[
DOWN[]_version="`$UP[]_CONFIG $DOWN[]_config_args --version | $SED -e 's/^\ *\(.*\)\ *$/\1/'`"
])
AC_MSG_CHECKING([for $1 ($DOWN[]_version) >= $2])
AX_COMPARE_VERSION($DOWN[]_version,[ge],[$2],[
AC_MSG_RESULT([yes])
AC_SUBST(UP[]_CFLAGS)
AC_SUBST(UP[]_LIBS)
:
$4
],[
AC_MSG_RESULT([no])
:
$5
])
],[
AC_SUBST(UP[]_CFLAGS)
AC_SUBST(UP[]_LIBS)
:
$4
])
])
])
popdef([UP])
popdef([DOWN])
])
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