Fix for PR automake/289:

* automake.in (Automake::Struct::libtool_tag): New attribute.  Define
it for the language that have a Libtool tag.
(%libtool_tags): New variable.
(handle_languages, define_compiler_variable)
(define_linker_variable): Pass --tag=XXX to libtool if supported.
(scan_autoconf_traces): Scan for _LT_AC_TAGCONFIG and AC_LIBTOOL_TAGS.
* tests/libtool3.test, tests/subobj9.test: Check that --tag=XXX is
output.

diff --git a/automake.in b/automake.in
index bb4d8b135757f1c08577ebdebda3488a5d0e3dab..1c9c6eea5d5a1905c67edd079a86409399466ff1 100755 (executable)
--- a/automake.in
+++ b/automake.in
@@ -4490,7 +4490,7 @@ sub scan_autoconf_traces ($)
   # Macros to trace, with their minimal number of arguments.
   #
   # IMPORTANT: If you add a macro here, you should also add this macro
-  # =========  to Automake-preselection in autoconf/lib/autom4te.in.
+  # =========  to Automake-preselection in autoconf/lib/autom4te.cfg.
   my %traced = (
                AC_CANONICAL_HOST => 0,
                AC_CANONICAL_SYSTEM => 0,