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-rw-r--r--m4/lib-link.m4813
1 files changed, 813 insertions, 0 deletions
diff --git a/m4/lib-link.m4 b/m4/lib-link.m4
new file mode 100644
index 0000000..ed5186a
--- /dev/null
+++ b/m4/lib-link.m4
@@ -0,0 +1,813 @@
+# lib-link.m4 serial 32
+dnl Copyright (C) 2001-2022 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([2.61])
+
+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 $INC[]NAME to CPPFLAGS before performing the following checks,
+ dnl because if the user has installed lib[]Name and not disabled its use
+ dnl via --without-lib[]Name-prefix, he wants to use it.
+ ac_save_CPPFLAGS="$CPPFLAGS"
+ AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+
+ AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
+ ac_save_LIBS="$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], [[$5]])'])
+ LIBS="$ac_save_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 $INC[]NAME either.
+ CPPFLAGS="$ac_save_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 $LDFLAGS. Using breadth-first-seach.
+ LIB[]NAME=
+ LTLIB[]NAME=
+ INC[]NAME=
+ LIB[]NAME[]_PREFIX=
+ dnl HAVE_LIB${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 "$found_la"; then
+ dnl Read the .la file. It defines the variables
+ dnl dlname, library_names, old_library, dependency_libs, current,
+ dnl age, revision, installed, dlopen, dlpreopen, libdir.
+ save_libdir="$libdir"
+ case "$found_la" in
+ */* | *\\*) . "$found_la" ;;
+ *) . "./$found_la" ;;
+ esac
+ libdir="$save_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 $wl.
+ acl_save_libdir="$libdir"
+ libdir="$alldirs"
+ eval flag=\"$acl_hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+ else
+ dnl The -rpath options are cumulative.
+ for found_dir in $rpathdirs; do
+ acl_save_libdir="$libdir"
+ libdir="$found_dir"
+ eval flag=\"$acl_hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIB[]NAME="${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}$dir"
+ done
+ acl_save_libdir="$libdir"
+ libdir="$alldirs"
+ eval flag=\"$acl_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="$dir"
+ eval flag=\"$acl_hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ $1="${$1}${$1:+ }$flag"
+ done
+ fi
+ fi
+ fi
+ fi
+ fi
+ AC_SUBST([$1])
+])
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