2007-10-23 12:48:09 +02:00
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# lib-prefix.m4 serial 5 (gettext-0.15)
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dnl Copyright (C) 2001-2005 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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2003-10-25 18:27:24 +02:00
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dnl From Bruno Haible.
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dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
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dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
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dnl require excessive bracketing.
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ifdef([AC_HELP_STRING],
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[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
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[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
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dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
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dnl to access previously installed libraries. The basic assumption is that
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dnl a user will want packages to use other packages he previously installed
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dnl with the same --prefix option.
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dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
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dnl libraries, but is otherwise very convenient.
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AC_DEFUN([AC_LIB_PREFIX],
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[
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AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([AC_CANONICAL_HOST])
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2007-10-23 12:48:09 +02:00
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AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
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2003-10-25 18:27:24 +02:00
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AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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dnl By default, look in $includedir and $libdir.
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use_additional=yes
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AC_LIB_WITH_FINAL_PREFIX([
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eval additional_includedir=\"$includedir\"
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eval additional_libdir=\"$libdir\"
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])
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AC_LIB_ARG_WITH([lib-prefix],
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[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
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--without-lib-prefix don't search for libraries in includedir and libdir],
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[
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if test "X$withval" = "Xno"; then
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use_additional=no
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else
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if test "X$withval" = "X"; then
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AC_LIB_WITH_FINAL_PREFIX([
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eval additional_includedir=\"$includedir\"
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eval additional_libdir=\"$libdir\"
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])
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else
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additional_includedir="$withval/include"
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2007-10-23 12:48:09 +02:00
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additional_libdir="$withval/$acl_libdirstem"
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2003-10-25 18:27:24 +02:00
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fi
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fi
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])
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if test $use_additional = yes; then
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dnl Potentially add $additional_includedir to $CPPFLAGS.
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dnl But don't add it
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dnl 1. if it's the standard /usr/include,
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dnl 2. if it's already present in $CPPFLAGS,
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dnl 3. if it's /usr/local/include and we are using GCC on Linux,
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dnl 4. if it doesn't exist as a directory.
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if test "X$additional_includedir" != "X/usr/include"; then
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haveit=
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for x in $CPPFLAGS; do
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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if test "X$x" = "X-I$additional_includedir"; then
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haveit=yes
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break
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fi
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done
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if test -z "$haveit"; then
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if test "X$additional_includedir" = "X/usr/local/include"; then
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if test -n "$GCC"; then
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case $host_os in
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2007-10-23 12:48:09 +02:00
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linux* | gnu* | k*bsd*-gnu) haveit=yes;;
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2003-10-25 18:27:24 +02:00
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esac
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fi
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fi
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if test -z "$haveit"; then
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if test -d "$additional_includedir"; then
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dnl Really add $additional_includedir to $CPPFLAGS.
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CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
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fi
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fi
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fi
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fi
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dnl Potentially add $additional_libdir to $LDFLAGS.
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dnl But don't add it
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dnl 1. if it's the standard /usr/lib,
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dnl 2. if it's already present in $LDFLAGS,
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dnl 3. if it's /usr/local/lib and we are using GCC on Linux,
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dnl 4. if it doesn't exist as a directory.
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2007-10-23 12:48:09 +02:00
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if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
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2003-10-25 18:27:24 +02:00
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haveit=
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for x in $LDFLAGS; do
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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if test "X$x" = "X-L$additional_libdir"; then
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haveit=yes
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break
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fi
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done
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if test -z "$haveit"; then
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2007-10-23 12:48:09 +02:00
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if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
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2003-10-25 18:27:24 +02:00
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if test -n "$GCC"; then
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case $host_os in
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linux*) haveit=yes;;
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esac
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fi
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fi
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if test -z "$haveit"; then
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if test -d "$additional_libdir"; then
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dnl Really add $additional_libdir to $LDFLAGS.
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LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
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fi
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fi
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fi
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fi
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fi
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])
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dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
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dnl acl_final_exec_prefix, containing the values to which $prefix and
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dnl $exec_prefix will expand at the end of the configure script.
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AC_DEFUN([AC_LIB_PREPARE_PREFIX],
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[
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dnl Unfortunately, prefix and exec_prefix get only finally determined
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dnl at the end of configure.
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if test "X$prefix" = "XNONE"; then
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acl_final_prefix="$ac_default_prefix"
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else
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acl_final_prefix="$prefix"
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fi
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if test "X$exec_prefix" = "XNONE"; then
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acl_final_exec_prefix='${prefix}'
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else
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acl_final_exec_prefix="$exec_prefix"
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fi
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acl_save_prefix="$prefix"
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prefix="$acl_final_prefix"
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eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
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prefix="$acl_save_prefix"
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])
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dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
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dnl variables prefix and exec_prefix bound to the values they will have
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dnl at the end of the configure script.
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AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
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[
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acl_save_prefix="$prefix"
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prefix="$acl_final_prefix"
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acl_save_exec_prefix="$exec_prefix"
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exec_prefix="$acl_final_exec_prefix"
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$1
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exec_prefix="$acl_save_exec_prefix"
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prefix="$acl_save_prefix"
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])
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2007-10-23 12:48:09 +02:00
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dnl AC_LIB_PREPARE_MULTILIB creates a variable acl_libdirstem, containing
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dnl the basename of the libdir, either "lib" or "lib64".
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AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
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[
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dnl There is no formal standard regarding lib and lib64. The current
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dnl practice is that on a system supporting 32-bit and 64-bit instruction
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dnl sets or ABIs, 64-bit libraries go under $prefix/lib64 and 32-bit
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dnl libraries go under $prefix/lib. We determine the compiler's default
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dnl mode by looking at the compiler's library search path. If at least
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dnl of its elements ends in /lib64 or points to a directory whose absolute
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dnl pathname ends in /lib64, we assume a 64-bit ABI. Otherwise we use the
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dnl default, namely "lib".
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acl_libdirstem=lib
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searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
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if test -n "$searchpath"; then
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acl_save_IFS="${IFS= }"; IFS=":"
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for searchdir in $searchpath; do
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if test -d "$searchdir"; then
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case "$searchdir" in
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*/lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
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*) searchdir=`cd "$searchdir" && pwd`
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case "$searchdir" in
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*/lib64 ) acl_libdirstem=lib64 ;;
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esac ;;
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esac
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fi
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done
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IFS="$acl_save_IFS"
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fi
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])
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