X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Flib-link.m4;h=92929193f197e91f16a110021afb0f665d7867a9;hb=39ef09258d67f22b4e8b04981350c978577520bd;hp=a16aa4460549d17704e10863738a543341bb026a;hpb=5d9f40cb7dfc6c9e9923192690c26b2e20722be3;p=gnulib.git diff --git a/m4/lib-link.m4 b/m4/lib-link.m4 index a16aa4460..92929193f 100644 --- a/m4/lib-link.m4 +++ b/m4/lib-link.m4 @@ -1,13 +1,13 @@ -# lib-link.m4 serial 1 (gettext-0.11) -dnl Copyright (C) 2001-2002 Free Software Foundation, Inc. -dnl This file is free software, distributed under the terms of the GNU -dnl General Public License. As a special exception to the GNU General -dnl Public License, this file may be distributed as part of a program -dnl that contains a configuration script generated by Autoconf, under -dnl the same distribution terms as the rest of that program. +# lib-link.m4 serial 8 (gettext-0.15) +dnl Copyright (C) 2001-2006 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. +AC_PREREQ(2.50) + dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and dnl the libraries corresponding to explicit and implicit dependencies. dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and @@ -92,10 +92,11 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], dnl Determine the platform dependent parameters needed to use rpath: dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator, -dnl hardcode_direct, hardcode_minus_L, -dnl sys_lib_search_path_spec, sys_lib_dlsearch_path_spec. +dnl hardcode_direct, hardcode_minus_L. AC_DEFUN([AC_LIB_RPATH], [ + dnl Tell automake >= 1.10 to complain if config.rpath is missing. + m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])]) AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host @@ -114,8 +115,10 @@ AC_DEFUN([AC_LIB_RPATH], hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator" hardcode_direct="$acl_cv_hardcode_direct" hardcode_minus_L="$acl_cv_hardcode_minus_L" - sys_lib_search_path_spec="$acl_cv_sys_lib_search_path_spec" - sys_lib_dlsearch_path_spec="$acl_cv_sys_lib_dlsearch_path_spec" + dnl Determine whether the user wants rpath handling at all. + AC_ARG_ENABLE(rpath, + [ --disable-rpath do not hardcode runtime library paths], + :, enable_rpath=yes) ]) dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and @@ -123,6 +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 $libdir. @@ -131,7 +135,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], eval additional_includedir=\"$includedir\" eval additional_libdir=\"$libdir\" ]) - AC_ARG_WITH([lib$1-prefix], + AC_LIB_ARG_WITH([lib$1-prefix], [ --with-lib$1-prefix[=DIR] search for lib$1 in DIR/include and DIR/lib --without-lib$1-prefix don't search for lib$1 in includedir and libdir], [ @@ -145,7 +149,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], ]) else additional_includedir="$withval/include" - additional_libdir="$withval/lib" + additional_libdir="$withval/$acl_libdirstem" fi fi ]) @@ -245,7 +249,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], dnl Linking with a shared library. We attempt to hardcode its dnl directory into the executable's runpath, unless it's the dnl standard /usr/lib. - if test "X$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 @@ -331,8 +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="$basedir/include" ;; esac @@ -349,7 +353,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], if test "X$additional_includedir" = "X/usr/local/include"; then if test -n "$GCC"; then case $host_os in - linux*) haveit=yes;; + linux* | gnu* | k*bsd*-gnu) haveit=yes;; esac fi fi @@ -393,12 +397,12 @@ 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 $host_os in - linux*) haveit=yes;; + linux* | gnu* | k*bsd*-gnu) haveit=yes;; esac fi fi @@ -434,6 +438,35 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], fi fi ;; + -R*) + dir=`echo "X$dep" | sed -e 's/^X-R//'` + if test "$enable_rpath" != no; then + dnl Potentially add DIR to rpathdirs. + dnl The rpathdirs will be appended to $LIBNAME at the end. + haveit= + for x in $rpathdirs; do + if test "X$x" = "X$dir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + rpathdirs="$rpathdirs $dir" + fi + dnl Potentially add DIR to ltrpathdirs. + dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. + haveit= + for x in $ltrpathdirs; do + if test "X$x" = "X$dir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + ltrpathdirs="$ltrpathdirs $dir" + fi + fi + ;; -l*) dnl Handle this in the next round. names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'` @@ -519,3 +552,79 @@ AC_DEFUN([AC_LIB_APPENDTOVAR], fi done ]) + +dnl For those cases where a variable contains several -L and -l options +dnl referring to unknown libraries and directories, this macro determines the +dnl necessary additional linker options for the runtime path. +dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL]) +dnl sets LDADDVAR to linker options needed together with LIBSVALUE. +dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed, +dnl otherwise linking without libtool is assumed. +AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS], +[ + AC_REQUIRE([AC_LIB_RPATH]) + AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) + $1= + if test "$enable_rpath" != no; then + if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then + dnl Use an explicit option to hardcode directories into the resulting + dnl binary. + rpathdirs= + next= + for opt in $2; do + if test -n "$next"; then + dir="$next" + dnl No need to hardcode the standard /usr/lib. + if test "X$dir" != "X/usr/$acl_libdirstem"; then + rpathdirs="$rpathdirs $dir" + fi + next= + else + case $opt in + -L) next=yes ;; + -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'` + dnl No need to hardcode the standard /usr/lib. + if test "X$dir" != "X/usr/$acl_libdirstem"; then + rpathdirs="$rpathdirs $dir" + fi + next= ;; + *) next= ;; + esac + fi + done + if test "X$rpathdirs" != "X"; then + if test -n ""$3""; then + dnl libtool is used for linking. Use -R options. + for dir in $rpathdirs; do + $1="${$1}${$1:+ }-R$dir" + done + else + dnl The linker is used for linking directly. + if test -n "$hardcode_libdir_separator"; then + dnl Weird platform: only the last -rpath option counts, the user + dnl must pass all path elements in one option. + alldirs= + for dir in $rpathdirs; do + alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$dir" + done + acl_save_libdir="$libdir" + libdir="$alldirs" + eval flag=\"$hardcode_libdir_flag_spec\" + libdir="$acl_save_libdir" + $1="$flag" + else + dnl The -rpath options are cumulative. + for dir in $rpathdirs; do + acl_save_libdir="$libdir" + libdir="$dir" + eval flag=\"$hardcode_libdir_flag_spec\" + libdir="$acl_save_libdir" + $1="${$1}${$1:+ }$flag" + done + fi + fi + fi + fi + fi + AC_SUBST([$1]) +])