--- /dev/null
+dnl as-libtool-tags.m4 0.1.4
+
+dnl autostars m4 macro for selecting libtool "tags" (languages)
+
+dnl Andy Wingo does not claim credit for this macro
+dnl backported from libtool 1.6 by Paolo Bonzini
+dnl see http://lists.gnu.org/archive/html/libtool/2003-12/msg00007.html
+
+dnl $Id$
+
+dnl AS_LIBTOOL_TAGS([tags...])
+
+dnl example
+dnl AS_LIBTOOL_TAGS([]) for only C (no fortran, etc)
+
+dnl When AC_LIBTOOL_TAGS is used, I redefine _LT_AC_TAGCONFIG
+dnl to be more similar to the libtool 1.6 implementation, which
+dnl uses an m4 loop and m4 case instead of a shell loop. This
+dnl way the CXX/GCJ/F77/RC tests are not always expanded.
+
+dnl AS_LIBTOOL_TAGS
+dnl ---------------
+dnl tags to enable
+AC_DEFUN([AS_LIBTOOL_TAGS],
+[m4_define([_LT_TAGS],[$1])
+m4_define([_LT_AC_TAGCONFIG], [
+ # redefined LT AC TAGCONFIG
+ if test -f "$ltmain"; then
+ if test ! -f "${ofile}"; then
+ AC_MSG_WARN([output file `$ofile' does not exist])
+ fi
+
+ if test -z "$LTCC"; then
+ eval "`$SHELL ${ofile} --config | grep '^LTCC='`"
+ if test -z "$LTCC"; then
+ AC_MSG_WARN([output file `$ofile' does not look like a libtool script])
+ else
+ AC_MSG_WARN([using `LTCC=$LTCC', extracted from `$ofile'])
+ fi
+ fi
+
+ AC_FOREACH([_LT_TAG], _LT_TAGS,
+ echo THOMAS: tag _LT_TAG
+ [m4_case(_LT_TAG,
+ [CXX], [
+ if test -n "$CXX" && test "X$CXX" != "Xno"; then
+ echo "THOMAS: YAY CXX"
+ AC_LIBTOOL_LANG_CXX_CONFIG
+ available_tags="$available_tags _LT_TAG"
+ fi],
+ [F77], [
+ if test -n "$F77" && test "X$F77" != "Xno"; then
+ AC_LIBTOOL_LANG_F77_CONFIG
+ available_tags="$available_tags _LT_TAG"
+ fi],
+ [GCJ], [
+ if test -n "$GCJ" && test "X$GCJ" != "Xno"; then
+ AC_LIBTOOL_LANG_GCJ_CONFIG
+ available_tags="$available_tags _LT_TAG"
+ fi],
+ [RC], [
+ if test -n "$RC" && test "X$RC" != "Xno"; then
+ AC_LIBTOOL_LANG_RC_CONFIG
+ available_tags="$available_tags _LT_TAG"
+ fi],
+ [m4_errprintn(m4_location[: error: invalid tag name: ]"_LT_TAG")
+ m4_exit(1)])
+ ])
+ echo THOMAS: available tags: $available_tags
+ fi
+ # Now substitute the updated list of available tags.
+ if eval "sed -e 's/^available_tags=.*\$/available_tags=\"$available_tags\"/' \"$ofile\" > \"${ofile}T\""; then
+ mv "${ofile}T" "$ofile"
+ chmod +x "$ofile"
+ AC_MSG_NOTICE([updated available libtool tags with $available_tags.])
+ else
+ rm -f "${ofile}T"
+ AC_MSG_ERROR([unable to update list of available tagged configurations.])
+
+ fi
+
+])dnl _LT_AC_TAG_CONFIG
+])