From: Bruno Haible Date: Fri, 2 Sep 2005 11:20:50 +0000 (+0000) Subject: Support for lib vs. lib64 distinction on biarch platforms. X-Git-Tag: cvs-readonly~2986 X-Git-Url: http://erislabs.org.uk/gitweb/?a=commitdiff_plain;h=5d10b74016b1539019fcfc01f10ad8876c685e67;p=gnulib.git Support for lib vs. lib64 distinction on biarch platforms. --- diff --git a/m4/ChangeLog b/m4/ChangeLog index 7a5b2e60d..e686734e6 100644 --- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,10 @@ +2005-08-27 Bruno Haible + + Support for lib vs. lib64 distinction on biarch platforms. + * lib-prefix.m4 (AC_LIB_PREPARE_MULTILIB): New macro. + (AC_LIB_PREFIX): Require it. Use $acl_libdirstem instead of 'lib'. + * lib-link.m4 (AC_LIB_LINKFLAGS_BODY): Likewise. + 2005-09-01 Jim Meyering * lchown.m4: Require gl_FUNC_CHOWN, for the definition of diff --git a/m4/lib-link.m4 b/m4/lib-link.m4 index ea0b0c4ea..244a77911 100644 --- a/m4/lib-link.m4 +++ b/m4/lib-link.m4 @@ -1,4 +1,4 @@ -# lib-link.m4 serial 6 (gettext-0.14.3) +# lib-link.m4 serial 7 (gettext-0.15) dnl Copyright (C) 2001-2005 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -126,6 +126,7 @@ dnl the libraries corresponding to explicit and implicit dependencies. dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables. AC_DEFUN([AC_LIB_LINKFLAGS_BODY], [ + AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) dnl By default, look in $includedir and $libdir. @@ -148,7 +149,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], ]) else additional_includedir="$withval/include" - additional_libdir="$withval/lib" + additional_libdir="$withval/$acl_libdirstem" fi fi ]) @@ -248,7 +249,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], dnl Linking with a shared library. We attempt to hardcode its dnl directory into the executable's runpath, unless it's the dnl standard /usr/lib. - if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then + if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/$acl_libdirstem"; then dnl No hardcoding is needed. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" else @@ -334,8 +335,8 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], dnl Assume the include files are nearby. additional_includedir= case "$found_dir" in - */lib | */lib/) - basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'` + */$acl_libdirstem | */$acl_libdirstem/) + basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'` additional_includedir="$basedir/include" ;; esac @@ -396,9 +397,9 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], dnl 3. if it's already present in $LDFLAGS or the already dnl constructed $LIBNAME, dnl 4. if it doesn't exist as a directory. - if test "X$additional_libdir" != "X/usr/lib"; then + if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then haveit= - if test "X$additional_libdir" = "X/usr/local/lib"; then + if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then if test -n "$GCC"; then case $host_os in linux* | gnu* | k*bsd*-gnu) haveit=yes;; diff --git a/m4/lib-prefix.m4 b/m4/lib-prefix.m4 index 0d895ca63..a8684e17e 100644 --- a/m4/lib-prefix.m4 +++ b/m4/lib-prefix.m4 @@ -1,4 +1,4 @@ -# lib-prefix.m4 serial 4 (gettext-0.14.2) +# lib-prefix.m4 serial 5 (gettext-0.15) dnl Copyright (C) 2001-2005 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -24,6 +24,7 @@ AC_DEFUN([AC_LIB_PREFIX], AC_BEFORE([$0], [AC_LIB_LINKFLAGS]) AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) + AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) dnl By default, look in $includedir and $libdir. use_additional=yes @@ -45,7 +46,7 @@ AC_DEFUN([AC_LIB_PREFIX], ]) else additional_includedir="$withval/include" - additional_libdir="$withval/lib" + additional_libdir="$withval/$acl_libdirstem" fi fi ]) @@ -87,7 +88,7 @@ AC_DEFUN([AC_LIB_PREFIX], dnl 2. if it's already present in $LDFLAGS, dnl 3. if it's /usr/local/lib and we are using GCC on Linux, dnl 4. if it doesn't exist as a directory. - if test "X$additional_libdir" != "X/usr/lib"; then + if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then haveit= for x in $LDFLAGS; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) @@ -97,7 +98,7 @@ AC_DEFUN([AC_LIB_PREFIX], fi done if test -z "$haveit"; then - if test "X$additional_libdir" = "X/usr/local/lib"; then + if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then if test -n "$GCC"; then case $host_os in linux*) haveit=yes;; @@ -151,3 +152,34 @@ AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX], exec_prefix="$acl_save_exec_prefix" prefix="$acl_save_prefix" ]) + +dnl AC_LIB_PREPARE_MULTILIB creates a variable acl_libdirstem, containing +dnl the basename of the libdir, either "lib" or "lib64". +AC_DEFUN([AC_LIB_PREPARE_MULTILIB], +[ + dnl There is no formal standard regarding lib and lib64. The current + dnl practice is that on a system supporting 32-bit and 64-bit instruction + dnl sets or ABIs, 64-bit libraries go under $prefix/lib64 and 32-bit + dnl libraries go under $prefix/lib. We determine the compiler's default + dnl mode by looking at the compiler's library search path. If at least + dnl of its elements ends in /lib64 or points to a directory whose absolute + dnl pathname ends in /lib64, we assume a 64-bit ABI. Otherwise we use the + dnl default, namely "lib". + acl_libdirstem=lib + searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'` + if test -n "$searchpath"; then + acl_save_IFS="${IFS= }"; IFS=":" + for searchdir in $searchpath; do + if test -d "$searchdir"; then + case "$searchdir" in + */lib64/ | */lib64 ) acl_libdirstem=lib64 ;; + *) searchdir=`cd "$searchdir" && pwd` + case "$searchdir" in + */lib64 ) acl_libdirstem=lib64 ;; + esac ;; + esac + fi + done + IFS="$acl_save_IFS" + fi +])