| # lib-link.m4 | |
| # serial 35 | |
| dnl Copyright (C) 2001-2026 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 This file is offered as-is, without any warranty. | |
| dnl From Bruno Haible. | |
| AC_PREREQ([2.61]) | |
| 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 | |
| dnl augments the CPPFLAGS variable. | |
| dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname | |
| dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem. | |
| AC_DEFUN([AC_LIB_LINKFLAGS], | |
| [ | |
| AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) | |
| AC_REQUIRE([AC_LIB_RPATH]) | |
| pushdef([Name],[m4_translit([$1],[./+-], [____])]) | |
| pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], | |
| [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) | |
| AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [ | |
| AC_LIB_LINKFLAGS_BODY([$1], [$2]) | |
| ac_cv_lib[]Name[]_libs="$LIB[]NAME" | |
| ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME" | |
| ac_cv_lib[]Name[]_cppflags="$INC[]NAME" | |
| ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX" | |
| ]) | |
| LIB[]NAME="$ac_cv_lib[]Name[]_libs" | |
| LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs" | |
| INC[]NAME="$ac_cv_lib[]Name[]_cppflags" | |
| LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix" | |
| AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) | |
| AC_SUBST([LIB]NAME) | |
| AC_SUBST([LTLIB]NAME) | |
| AC_SUBST([LIB]NAME[_PREFIX]) | |
| dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the | |
| dnl results of this search when this library appears as a dependency. | |
| HAVE_LIB[]NAME=yes | |
| popdef([NAME]) | |
| popdef([Name]) | |
| ]) | |
| dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message]) | |
| dnl searches for libname and the libraries corresponding to explicit and | |
| dnl implicit dependencies, together with the specified include files and | |
| dnl the ability to compile and link the specified testcode. The missing-message | |
| dnl defaults to 'no' and may contain additional hints for the user. | |
| dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} | |
| dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and | |
| dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs | |
| dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty. | |
| dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname | |
| dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem. | |
| AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], | |
| [ | |
| AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) | |
| AC_REQUIRE([AC_LIB_RPATH]) | |
| pushdef([Name],[m4_translit([$1],[./+-], [____])]) | |
| pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], | |
| [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) | |
| dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME | |
| dnl accordingly. | |
| AC_LIB_LINKFLAGS_BODY([$1], [$2]) | |
| dnl Add $INC[]NAME to CPPFLAGS before performing the following checks, | |
| dnl because if the user has installed lib[]Name and not disabled its use | |
| dnl via --without-lib[]Name-prefix, he wants to use it. | |
| acl_saved_CPPFLAGS="$CPPFLAGS" | |
| AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) | |
| AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [ | |
| acl_saved_LIBS="$LIBS" | |
| dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS, | |
| dnl because these -l options might require -L options that are present in | |
| dnl LIBS. -l options benefit only from the -L options listed before it. | |
| dnl Otherwise, add it to the front of LIBS, because it may be a static | |
| dnl library that depends on another static library that is present in LIBS. | |
| dnl Static libraries benefit only from the static libraries listed after | |
| dnl it. | |
| case " $LIB[]NAME" in | |
| *" -l"*) LIBS="$LIBS $LIB[]NAME" ;; | |
| *) LIBS="$LIB[]NAME $LIBS" ;; | |
| esac | |
| AC_LINK_IFELSE( | |
| [AC_LANG_PROGRAM([[$3]], [[$4]])], | |
| [ac_cv_lib[]Name=yes], | |
| [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])']) | |
| LIBS="$acl_saved_LIBS" | |
| ]) | |
| if test "$ac_cv_lib[]Name" = yes; then | |
| HAVE_LIB[]NAME=yes | |
| AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.]) | |
| AC_MSG_CHECKING([how to link with lib[]$1]) | |
| AC_MSG_RESULT([$LIB[]NAME]) | |
| else | |
| HAVE_LIB[]NAME=no | |
| dnl If $LIB[]NAME didn't lead to a usable library, we don't need | |
| dnl $INC[]NAME either. | |
| CPPFLAGS="$acl_saved_CPPFLAGS" | |
| LIB[]NAME= | |
| LTLIB[]NAME= | |
| LIB[]NAME[]_PREFIX= | |
| fi | |
| AC_SUBST([HAVE_LIB]NAME) | |
| AC_SUBST([LIB]NAME) | |
| AC_SUBST([LTLIB]NAME) | |
| AC_SUBST([LIB]NAME[_PREFIX]) | |
| popdef([NAME]) | |
| popdef([Name]) | |
| ]) | |
| dnl Determine the platform dependent parameters needed to use rpath: | |
| dnl acl_libext, | |
| dnl acl_shlibext, | |
| dnl acl_libname_spec, | |
| dnl acl_library_names_spec, | |
| dnl acl_hardcode_libdir_flag_spec, | |
| dnl acl_hardcode_libdir_separator, | |
| dnl acl_hardcode_direct, | |
| dnl acl_hardcode_minus_L. | |
| AC_DEFUN([AC_LIB_RPATH], | |
| [ | |
| dnl Complain if config.rpath is missing. | |
| 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 | |
| AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir | |
| AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [ | |
| CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \ | |
| ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh | |
| . ./conftest.sh | |
| rm -f ./conftest.sh | |
| acl_cv_rpath=done | |
| ]) | |
| wl="$acl_cv_wl" | |
| acl_libext="$acl_cv_libext" | |
| acl_shlibext="$acl_cv_shlibext" | |
| acl_libname_spec="$acl_cv_libname_spec" | |
| acl_library_names_spec="$acl_cv_library_names_spec" | |
| acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec" | |
| acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator" | |
| acl_hardcode_direct="$acl_cv_hardcode_direct" | |
| acl_hardcode_minus_L="$acl_cv_hardcode_minus_L" | |
| 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_FROMPACKAGE(name, package) | |
| dnl declares that libname comes from the given package. The configure file | |
| dnl will then not have a --with-libname-prefix option but a | |
| dnl --with-package-prefix option. Several libraries can come from the same | |
| dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar | |
| dnl macro call that searches for libname. | |
| AC_DEFUN([AC_LIB_FROMPACKAGE], | |
| [ | |
| pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], | |
| [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) | |
| define([acl_frompackage_]NAME, [$2]) | |
| popdef([NAME]) | |
| pushdef([PACK],[$2]) | |
| pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-], | |
| [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) | |
| define([acl_libsinpackage_]PACKUP, | |
| m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[[, ]]],)[lib$1]) | |
| popdef([PACKUP]) | |
| popdef([PACK]) | |
| ]) | |
| dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and | |
| dnl the libraries corresponding to explicit and implicit dependencies. | |
| dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables. | |
| dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found | |
| dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem. | |
| AC_DEFUN([AC_LIB_LINKFLAGS_BODY], | |
| [ | |
| AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) | |
| pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], | |
| [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) | |
| pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])]) | |
| pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-], | |
| [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) | |
| pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])]) | |
| dnl By default, look in $includedir and $libdir. | |
| use_additional=yes | |
| AC_LIB_WITH_FINAL_PREFIX([ | |
| eval additional_includedir=\"$includedir\" | |
| eval additional_libdir=\"$libdir\" | |
| eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\" | |
| eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\" | |
| ]) | |
| AC_ARG_WITH(PACK[-prefix], | |
| [[ --with-]]PACK[[-prefix[=DIR] search for ]]PACKLIBS[[ in DIR/include and DIR/lib | |
| --without-]]PACK[[-prefix don't search for ]]PACKLIBS[[ in includedir and libdir]], | |
| [ | |
| if test "X$withval" = "Xno"; then | |
| use_additional=no | |
| else | |
| if test "X$withval" = "X"; then | |
| AC_LIB_WITH_FINAL_PREFIX([ | |
| eval additional_includedir=\"$includedir\" | |
| eval additional_libdir=\"$libdir\" | |
| eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\" | |
| eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\" | |
| ]) | |
| else | |
| additional_includedir="$withval/include" | |
| additional_libdir="$withval/$acl_libdirstem" | |
| additional_libdir2="$withval/$acl_libdirstem2" | |
| additional_libdir3="$withval/$acl_libdirstem3" | |
| fi | |
| fi | |
| ]) | |
| if test "X$additional_libdir2" = "X$additional_libdir"; then | |
| additional_libdir2= | |
| fi | |
| if test "X$additional_libdir3" = "X$additional_libdir"; then | |
| additional_libdir3= | |
| fi | |
| dnl Search the library and its dependencies in $additional_libdir and | |
| dnl $LDFLAGS. Use breadth-first search. | |
| LIB[]NAME= | |
| LTLIB[]NAME= | |
| INC[]NAME= | |
| LIB[]NAME[]_PREFIX= | |
| dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been | |
| dnl computed. So it has to be reset here. | |
| HAVE_LIB[]NAME= | |
| rpathdirs= | |
| ltrpathdirs= | |
| names_already_handled= | |
| names_next_round='$1 $2' | |
| while test -n "$names_next_round"; do | |
| names_this_round="$names_next_round" | |
| names_next_round= | |
| for name in $names_this_round; do | |
| already_handled= | |
| for n in $names_already_handled; do | |
| if test "$n" = "$name"; then | |
| already_handled=yes | |
| break | |
| fi | |
| done | |
| if test -z "$already_handled"; then | |
| names_already_handled="$names_already_handled $name" | |
| dnl See if it was already located by an earlier AC_LIB_LINKFLAGS | |
| dnl or AC_LIB_HAVE_LINKFLAGS call. | |
| uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'` | |
| eval value=\"\$HAVE_LIB$uppername\" | |
| if test -n "$value"; then | |
| if test "$value" = yes; then | |
| eval value=\"\$LIB$uppername\" | |
| test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value" | |
| eval value=\"\$LTLIB$uppername\" | |
| test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value" | |
| else | |
| dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined | |
| dnl that this library doesn't exist. So just drop it. | |
| : | |
| fi | |
| else | |
| dnl Search the library lib$name in $additional_libdir and $LDFLAGS | |
| dnl and the already constructed $LIBNAME/$LTLIBNAME. | |
| found_dir= | |
| found_la= | |
| found_so= | |
| found_a= | |
| eval libname=\"$acl_libname_spec\" # typically: libname=lib$name | |
| if test -n "$acl_shlibext"; then | |
| shrext=".$acl_shlibext" # typically: shrext=.so | |
| else | |
| shrext= | |
| fi | |
| if test $use_additional = yes; then | |
| for additional_libdir_variable in additional_libdir additional_libdir2 additional_libdir3; do | |
| if test "X$found_dir" = "X"; then | |
| eval dir=\$$additional_libdir_variable | |
| if test -n "$dir"; then | |
| dnl The same code as in the loop below: | |
| dnl First look for a shared library. | |
| if test -n "$acl_shlibext"; then | |
| if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then | |
| found_dir="$dir" | |
| found_so="$dir/$libname$shrext" | |
| else | |
| if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then | |
| ver=`(cd "$dir" && \ | |
| for f in "$libname$shrext".*; do echo "$f"; done \ | |
| | sed -e "s,^$libname$shrext\\\\.,," \ | |
| | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \ | |
| | sed 1q ) 2>/dev/null` | |
| if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then | |
| found_dir="$dir" | |
| found_so="$dir/$libname$shrext.$ver" | |
| fi | |
| else | |
| eval library_names=\"$acl_library_names_spec\" | |
| for f in $library_names; do | |
| if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then | |
| found_dir="$dir" | |
| found_so="$dir/$f" | |
| break | |
| fi | |
| done | |
| fi | |
| fi | |
| fi | |
| dnl Then look for a static library. | |
| if test "X$found_dir" = "X"; then | |
| if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then | |
| found_dir="$dir" | |
| found_a="$dir/$libname.$acl_libext" | |
| fi | |
| fi | |
| if test "X$found_dir" != "X"; then | |
| if test -f "$dir/$libname.la"; then | |
| found_la="$dir/$libname.la" | |
| fi | |
| fi | |
| fi | |
| fi | |
| done | |
| fi | |
| if test "X$found_dir" = "X"; then | |
| for x in $LDFLAGS $LTLIB[]NAME; do | |
| AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) | |
| case "$x" in | |
| -L*) | |
| dir=`echo "X$x" | sed -e 's/^X-L//'` | |
| dnl First look for a shared library. | |
| if test -n "$acl_shlibext"; then | |
| if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then | |
| found_dir="$dir" | |
| found_so="$dir/$libname$shrext" | |
| else | |
| if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then | |
| ver=`(cd "$dir" && \ | |
| for f in "$libname$shrext".*; do echo "$f"; done \ | |
| | sed -e "s,^$libname$shrext\\\\.,," \ | |
| | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \ | |
| | sed 1q ) 2>/dev/null` | |
| if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then | |
| found_dir="$dir" | |
| found_so="$dir/$libname$shrext.$ver" | |
| fi | |
| else | |
| eval library_names=\"$acl_library_names_spec\" | |
| for f in $library_names; do | |
| if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then | |
| found_dir="$dir" | |
| found_so="$dir/$f" | |
| break | |
| fi | |
| done | |
| fi | |
| fi | |
| fi | |
| dnl Then look for a static library. | |
| if test "X$found_dir" = "X"; then | |
| if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then | |
| found_dir="$dir" | |
| found_a="$dir/$libname.$acl_libext" | |
| fi | |
| fi | |
| if test "X$found_dir" != "X"; then | |
| if test -f "$dir/$libname.la"; then | |
| found_la="$dir/$libname.la" | |
| fi | |
| fi | |
| ;; | |
| esac | |
| if test "X$found_dir" != "X"; then | |
| break | |
| fi | |
| done | |
| fi | |
| if test "X$found_dir" != "X"; then | |
| dnl Found the library. | |
| LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name" | |
| if test "X$found_so" != "X"; then | |
| 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/$acl_libdirstem" \ | |
| || test "X$found_dir" = "X/usr/$acl_libdirstem2" \ | |
| || test "X$found_dir" = "X/usr/$acl_libdirstem3"; then | |
| dnl No hardcoding is needed. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" | |
| else | |
| dnl Use an explicit option to hardcode DIR into the resulting | |
| dnl binary. | |
| 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$found_dir"; then | |
| haveit=yes | |
| break | |
| fi | |
| done | |
| if test -z "$haveit"; then | |
| ltrpathdirs="$ltrpathdirs $found_dir" | |
| fi | |
| dnl The hardcoding into $LIBNAME is system dependent. | |
| if test "$acl_hardcode_direct" = yes; then | |
| dnl Using DIR/libNAME.so during linking hardcodes DIR into the | |
| dnl resulting binary. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" | |
| else | |
| if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then | |
| dnl Use an explicit option to hardcode DIR into the resulting | |
| dnl binary. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" | |
| 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$found_dir"; then | |
| haveit=yes | |
| break | |
| fi | |
| done | |
| if test -z "$haveit"; then | |
| rpathdirs="$rpathdirs $found_dir" | |
| fi | |
| else | |
| dnl Rely on "-L$found_dir". | |
| dnl But don't add it if it's already contained in the LDFLAGS | |
| dnl or the already constructed $LIBNAME | |
| haveit= | |
| for x in $LDFLAGS $LIB[]NAME; do | |
| AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) | |
| if test "X$x" = "X-L$found_dir"; then | |
| haveit=yes | |
| break | |
| fi | |
| done | |
| if test -z "$haveit"; then | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir" | |
| fi | |
| if test "$acl_hardcode_minus_L" != no; then | |
| dnl FIXME: Not sure whether we should use | |
| dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" | |
| dnl here. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" | |
| else | |
| dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH | |
| dnl here, because this doesn't fit in flags passed to the | |
| dnl compiler. So give up. No hardcoding. This affects only | |
| dnl very old systems. | |
| dnl FIXME: Not sure whether we should use | |
| dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" | |
| dnl here. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" | |
| fi | |
| fi | |
| fi | |
| fi | |
| else | |
| if test "X$found_a" != "X"; then | |
| dnl Linking with a static library. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a" | |
| else | |
| dnl We shouldn't come here, but anyway it's good to have a | |
| dnl fallback. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name" | |
| fi | |
| fi | |
| dnl Assume the include files are nearby. | |
| additional_includedir= | |
| case "$found_dir" in | |
| */$acl_libdirstem | */$acl_libdirstem/) | |
| basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'` | |
| if test "$name" = '$1'; then | |
| LIB[]NAME[]_PREFIX="$basedir" | |
| fi | |
| additional_includedir="$basedir/include" | |
| ;; | |
| */$acl_libdirstem2 | */$acl_libdirstem2/) | |
| basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'` | |
| if test "$name" = '$1'; then | |
| LIB[]NAME[]_PREFIX="$basedir" | |
| fi | |
| additional_includedir="$basedir/include" | |
| ;; | |
| */$acl_libdirstem3 | */$acl_libdirstem3/) | |
| basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem3/"'*$,,'` | |
| if test "$name" = '$1'; then | |
| LIB[]NAME[]_PREFIX="$basedir" | |
| fi | |
| additional_includedir="$basedir/include" | |
| ;; | |
| esac | |
| if test "X$additional_includedir" != "X"; then | |
| dnl Potentially add $additional_includedir to $INCNAME. | |
| dnl But don't add it | |
| dnl 1. if it's the standard /usr/include, | |
| dnl 2. if it's /usr/local/include and we are using GCC on Linux, | |
| dnl 3. if it's already present in $CPPFLAGS or the already | |
| dnl constructed $INCNAME, | |
| dnl 4. if it doesn't exist as a directory. | |
| if test "X$additional_includedir" != "X/usr/include"; then | |
| haveit= | |
| if test "X$additional_includedir" = "X/usr/local/include"; then | |
| if test -n "$GCC"; then | |
| case $host_os in | |
| linux* | gnu* | k*bsd*-gnu) haveit=yes;; | |
| esac | |
| fi | |
| fi | |
| if test -z "$haveit"; then | |
| for x in $CPPFLAGS $INC[]NAME; do | |
| AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) | |
| if test "X$x" = "X-I$additional_includedir"; then | |
| haveit=yes | |
| break | |
| fi | |
| done | |
| if test -z "$haveit"; then | |
| if test -d "$additional_includedir"; then | |
| dnl Really add $additional_includedir to $INCNAME. | |
| INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir" | |
| fi | |
| fi | |
| fi | |
| fi | |
| fi | |
| dnl Look for dependencies. | |
| if test -n "$found_la"; then | |
| dnl Read the .la file. It defines the variables | |
| dnl dlname, library_names, old_library, dependency_libs, current, | |
| dnl age, revision, installed, dlopen, dlpreopen, libdir. | |
| saved_libdir="$libdir" | |
| case "$found_la" in | |
| */* | *\\*) . "$found_la" ;; | |
| *) . "./$found_la" ;; | |
| esac | |
| libdir="$saved_libdir" | |
| dnl We use only dependency_libs. | |
| for dep in $dependency_libs; do | |
| case "$dep" in | |
| -L*) | |
| dependency_libdir=`echo "X$dep" | sed -e 's/^X-L//'` | |
| dnl Potentially add $dependency_libdir to $LIBNAME and $LTLIBNAME. | |
| dnl But don't add it | |
| dnl 1. if it's the standard /usr/lib, | |
| dnl 2. if it's /usr/local/lib and we are using GCC on Linux, | |
| dnl 3. if it's already present in $LDFLAGS or the already | |
| dnl constructed $LIBNAME, | |
| dnl 4. if it doesn't exist as a directory. | |
| if test "X$dependency_libdir" != "X/usr/$acl_libdirstem" \ | |
| && test "X$dependency_libdir" != "X/usr/$acl_libdirstem2" \ | |
| && test "X$dependency_libdir" != "X/usr/$acl_libdirstem3"; then | |
| haveit= | |
| if test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem" \ | |
| || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem2" \ | |
| || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem3"; then | |
| if test -n "$GCC"; then | |
| case $host_os in | |
| linux* | gnu* | k*bsd*-gnu) haveit=yes;; | |
| esac | |
| fi | |
| fi | |
| if test -z "$haveit"; then | |
| haveit= | |
| for x in $LDFLAGS $LIB[]NAME; do | |
| AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) | |
| if test "X$x" = "X-L$dependency_libdir"; then | |
| haveit=yes | |
| break | |
| fi | |
| done | |
| if test -z "$haveit"; then | |
| if test -d "$dependency_libdir"; then | |
| dnl Really add $dependency_libdir to $LIBNAME. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$dependency_libdir" | |
| fi | |
| fi | |
| haveit= | |
| for x in $LDFLAGS $LTLIB[]NAME; do | |
| AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) | |
| if test "X$x" = "X-L$dependency_libdir"; then | |
| haveit=yes | |
| break | |
| fi | |
| done | |
| if test -z "$haveit"; then | |
| if test -d "$dependency_libdir"; then | |
| dnl Really add $dependency_libdir to $LTLIBNAME. | |
| LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$dependency_libdir" | |
| fi | |
| fi | |
| 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 $dir" | |
| fi | |
| fi | |
| ;; | |
| -l*) | |
| dnl Handle this in the next round. | |
| dnl But on GNU systems, ignore -lc options, because | |
| dnl - linking with libc is the default anyway, | |
| dnl - linking with libc.a may produce an error | |
| dnl "/usr/bin/ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality in `/usr/lib/libc.a(strcmp.o)' can not be used when making an executable; recompile with -fPIE and relink with -pie" | |
| dnl or may produce an executable that always crashes, see | |
| dnl <https://lists.gnu.org/archive/html/grep-devel/2020-09/msg00052.html>. | |
| dep=`echo "X$dep" | sed -e 's/^X-l//'` | |
| if test "X$dep" != Xc \ | |
| || case $host_os in | |
| linux* | gnu* | k*bsd*-gnu) false ;; | |
| *) true ;; | |
| esac; then | |
| names_next_round="$names_next_round $dep" | |
| fi | |
| ;; | |
| *.la) | |
| dnl Handle this in the next round. Throw away the .la's | |
| dnl directory; it is already contained in a preceding -L | |
| dnl option. | |
| names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'` | |
| ;; | |
| *) | |
| dnl Most likely an immediate library name. | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep" | |
| LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep" | |
| ;; | |
| esac | |
| done | |
| fi | |
| else | |
| dnl Didn't find the library; assume it is in the system directories | |
| dnl known to the linker and runtime loader. (All the system | |
| dnl directories known to the linker should also be known to the | |
| dnl runtime loader, otherwise the system is severely misconfigured.) | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" | |
| LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name" | |
| fi | |
| fi | |
| fi | |
| done | |
| done | |
| if test "X$rpathdirs" != "X"; then | |
| if test -n "$acl_hardcode_libdir_separator"; then | |
| dnl Weird platform: only the last -rpath option counts, the user must | |
| dnl pass all path elements in one option. We can arrange that for a | |
| dnl single library, but not when more than one $LIBNAMEs are used. | |
| alldirs= | |
| for found_dir in $rpathdirs; do | |
| alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir" | |
| done | |
| dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl. | |
| acl_saved_libdir="$libdir" | |
| libdir="$alldirs" | |
| eval flag=\"$acl_hardcode_libdir_flag_spec\" | |
| libdir="$acl_saved_libdir" | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" | |
| else | |
| dnl The -rpath options are cumulative. | |
| for found_dir in $rpathdirs; do | |
| acl_saved_libdir="$libdir" | |
| libdir="$found_dir" | |
| eval flag=\"$acl_hardcode_libdir_flag_spec\" | |
| libdir="$acl_saved_libdir" | |
| LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" | |
| done | |
| fi | |
| fi | |
| if test "X$ltrpathdirs" != "X"; then | |
| dnl When using libtool, the option that works for both libraries and | |
| dnl executables is -R. The -R options are cumulative. | |
| for found_dir in $ltrpathdirs; do | |
| LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir" | |
| done | |
| fi | |
| popdef([PACKLIBS]) | |
| popdef([PACKUP]) | |
| popdef([PACK]) | |
| popdef([NAME]) | |
| ]) | |
| dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR, | |
| dnl unless already present in VAR. | |
| dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes | |
| dnl contains two or three consecutive elements that belong together. | |
| AC_DEFUN([AC_LIB_APPENDTOVAR], | |
| [ | |
| for element in [$2]; do | |
| haveit= | |
| for x in $[$1]; do | |
| AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) | |
| if test "X$x" = "X$element"; then | |
| haveit=yes | |
| break | |
| fi | |
| done | |
| if test -z "$haveit"; then | |
| [$1]="${[$1]}${[$1]:+ }$element" | |
| 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 "$acl_hardcode_libdir_flag_spec" && test "$acl_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/$acl_libdirstem" \ | |
| && test "X$dir" != "X/usr/$acl_libdirstem2" \ | |
| && test "X$dir" != "X/usr/$acl_libdirstem3"; then | |
| rpathdirs="$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" \ | |
| && test "X$dir" != "X/usr/$acl_libdirstem2" \ | |
| && test "X$dir" != "X/usr/$acl_libdirstem3"; 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 "$acl_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}${alldirs:+$acl_hardcode_libdir_separator}$dir" | |
| done | |
| acl_saved_libdir="$libdir" | |
| libdir="$alldirs" | |
| eval flag=\"$acl_hardcode_libdir_flag_spec\" | |
| libdir="$acl_saved_libdir" | |
| $1="$flag" | |
| else | |
| dnl The -rpath options are cumulative. | |
| for dir in $rpathdirs; do | |
| acl_saved_libdir="$libdir" | |
| libdir="$dir" | |
| eval flag=\"$acl_hardcode_libdir_flag_spec\" | |
| libdir="$acl_saved_libdir" | |
| $1="${$1}${$1:+ }$flag" | |
| done | |
| fi | |
| fi | |
| fi | |
| fi | |
| fi | |
| AC_SUBST([$1]) | |
| ]) |