-
-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/$acl_libdirstem"; then
- rpathdirs="$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 "$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])
-])