[SCM] GNU Autoconf source repository branch, master, updated. v2.63b-5-g34163e5

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- Log -----------------------------------------------------------------
commit 34163e58d4112ac86640a26fc8bb7bc7a69c9846
Author: Ralf Wildenhues <[email protected]>
Date:   Thu Apr 9 00:00:30 2009 +0200

    Automake relies on the undocumented `_AC_COMPILER_EXEEXT' macro.
    
    * lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT): Document that
    Automake relies on this macro.
    
    Signed-off-by: Ralf Wildenhues <[email protected]>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog            |    6 ++++++
 lib/autoconf/lang.m4 |    3 +++
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 4c0e3f8..95c024c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-04-08  Ralf Wildenhues  <[email protected]>
+
+	Automake relies on the undocumented `_AC_COMPILER_EXEEXT' macro.
+	* lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT): Document that
+	Automake relies on this macro.
+
 2009-04-06  Eric Blake  <[email protected]>
 
 	Reduce testsuite size.
diff --git a/lib/autoconf/lang.m4 b/lib/autoconf/lang.m4
index 8bbe494..bcd037b 100644
--- a/lib/autoconf/lang.m4
+++ b/lib/autoconf/lang.m4
@@ -626,6 +626,9 @@ AC_MSG_RESULT([$ac_cv_exeext])
 #
 # Must be run before _AC_COMPILER_OBJEXT because _AC_COMPILER_EXEEXT_DEFAULT
 # checks whether the compiler works.
+#
+# Do not rename this macro; Automake decides whether EXEEXT is used
+# by checking whether `_AC_COMPILER_EXEEXT' has been expanded.
 m4_define([_AC_COMPILER_EXEEXT],
 [AC_LANG_CONFTEST([AC_LANG_PROGRAM()])
 ac_clean_files_save=$ac_clean_files


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