6399502719
We use standard AX_PATH_GENERIC() macro from Autoconf archive to do the check
to keep our own code as simple as possible. Notice that this script must be
used, just adding the include and library directories to {C,LD}FLAGS is not
enough, notably -DPCRE_STATIC which is output by pcre-config for static builds
only is crucial. Also use LIBS instead of LDFLAGS to fix linking when using
static libraries.
Also note that this allows to pass PCRE_CONFIG variable value to configure to
force the use of the specified script (and not the one first found in PATH),
which is especially important when cross-compiling.
Finally, PCRE is required by default now, --without-pcre must be explicitly
used to build without it.
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12169 626c5289-ae23-0410-ae9c-e8d60b6d4f22
142 lines
4.7 KiB
Text
142 lines
4.7 KiB
Text
# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_path_generic.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_PATH_GENERIC(LIBRARY,[MINIMUM-VERSION,[SED-EXPR-EXTRACTOR]],[ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],[CONFIG-SCRIPTS],[CFLAGS-ARG],[LIBS-ARG])
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#
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# DESCRIPTION
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#
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# Runs the LIBRARY-config script and defines LIBRARY_CFLAGS and
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# LIBRARY_LIBS
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#
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# The script must support `--cflags' and `--libs' args. If MINIMUM-VERSION
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# is specified, the script must also support the `--version' arg. If the
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# `--with-library-[exec-]prefix' arguments to ./configure are given, it
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# must also support `--prefix' and `--exec-prefix'. Prefereable use
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# CONFIG-SCRIPTS as config script, CFLAGS-ARG instead of `--cflags` and
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# LIBS-ARG instead of `--libs`, if given.
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#
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# The SED-EXPR-EXTRACTOR parameter representes the expression used in sed
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# to extract the version number. Use it if your 'foo-config --version'
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# dumps something like 'Foo library v1.0.0 (alfa)' instead of '1.0.0'.
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#
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# Example:
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#
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# AX_PATH_GENERIC(Foo, 1.0.0)
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#
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# would run `foo-config --version' and check that it is at least 1.0.0, if
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# successful the following variables would be defined and substituted:
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#
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# FOO_CFLAGS to `foo-config --cflags`
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# FOO_LIBS to `foo-config --libs`
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#
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# Example:
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#
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# AX_PATH_GENERIC([Bar],,,[
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# AC_MSG_ERROR([Cannot find Bar library])
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# ])
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#
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# would check for bar-config program, defining and substituting the
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# following variables:
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#
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# BAR_CFLAGS to `bar-config --cflags`
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# BAR_LIBS to `bar-config --libs`
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#
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# This macro is a rearranged version of AC_PATH_GENERIC from Angus Lees.
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#
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# LICENSE
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#
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# Copyright (c) 2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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# warranty.
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#serial 10
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AU_ALIAS([AC_PATH_GENERIC], [AX_PATH_GENERIC])
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AC_DEFUN([AX_PATH_GENERIC],[
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AC_REQUIRE([AC_PROG_SED])
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dnl we're going to need uppercase and lowercase versions of the
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dnl string `LIBRARY'
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pushdef([UP], translit([$1], [a-z], [A-Z]))dnl
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pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
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AC_ARG_WITH(DOWN-prefix,[AS_HELP_STRING([--with-]DOWN[-prefix=PREFIX], [Prefix where $1 is installed (optional)])],
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DOWN[]_config_prefix="$withval", DOWN[]_config_prefix="")
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AC_ARG_WITH(DOWN-exec-prefix,[AS_HELP_STRING([--with-]DOWN[-exec-prefix=EPREFIX], [Exec prefix where $1 is installed (optional)])],
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DOWN[]_config_exec_prefix="$withval", DOWN[]_config_exec_prefix="")
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AC_ARG_VAR(UP[]_CONFIG, [config script used for $1])
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AC_ARG_VAR(UP[]_CFLAGS, [CFLAGS used for $1])
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AC_ARG_VAR(UP[]_LIBS, [LIBS used for $1])
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AS_IF([test x$DOWN[]_config_exec_prefix != x],[
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DOWN[]_config_args="$DOWN[]_config_args --exec-prefix=$DOWN[]_config_exec_prefix"
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AS_IF([test x${UP[]_CONFIG+set} != xset],[
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UP[]_CONFIG=$DOWN[]_config_exec_prefix/bin/DOWN-config
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])
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])
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AS_IF([test x$DOWN[]_config_prefix != x],[
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DOWN[]_config_args="$DOWN[]_config_args --prefix=$DOWN[]_config_prefix"
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AS_IF([test x${UP[]_CONFIG+set} != xset],[
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UP[]_CONFIG=$DOWN[]_config_prefix/bin/DOWN-config
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])
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])
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AC_PATH_PROGS(UP[]_CONFIG,[$6 DOWN-config],[no])
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AS_IF([test "$UP[]_CONFIG" == "no"],[
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:
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$5
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],[
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dnl Get the CFLAGS from LIBRARY-config script
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AS_IF([test x"$7" == x],[
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UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args --cflags`"
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],[
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UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args $7`"
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])
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dnl Get the LIBS from LIBRARY-config script
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AS_IF([test x"$8" == x],[
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UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args --libs`"
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],[
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UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args $8`"
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])
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AS_IF([test x"$2" != x],[
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dnl Check for provided library version
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AS_IF([test x"$3" != x],[
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dnl Use provided sed expression
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DOWN[]_version="`$UP[]_CONFIG $DOWN[]_config_args --version | $SED -e $3`"
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],[
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DOWN[]_version="`$UP[]_CONFIG $DOWN[]_config_args --version | $SED -e 's/^\ *\(.*\)\ *$/\1/'`"
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])
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AC_MSG_CHECKING([for $1 ($DOWN[]_version) >= $2])
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AX_COMPARE_VERSION($DOWN[]_version,[ge],[$2],[
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AC_MSG_RESULT([yes])
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AC_SUBST(UP[]_CFLAGS)
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AC_SUBST(UP[]_LIBS)
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:
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$4
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],[
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AC_MSG_RESULT([no])
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:
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$5
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])
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],[
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AC_SUBST(UP[]_CFLAGS)
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AC_SUBST(UP[]_LIBS)
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:
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$4
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])
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])
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popdef([UP])
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popdef([DOWN])
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])
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