* aclocal.in (write_aclocal): Warn about autoconf

incompatibilities instead of making them fatal.
* tests/missing4.test: Adjust.
* NEWS: Update.
Problem reported by Bruno Haible in
<http://lists.gnu.org/archive/html/bug-automake/2007-06/msg00010.html>.

1 files changed, 4 insertions, 3 deletions

diff --git a/aclocal.in b/aclocal.in
index 3e4ab885d..9847b96b2 100644
--- a/aclocal.in
+++ b/aclocal.in
@@ -783,9 +783,10 @@ sub write_aclocal ($@)
       # use it in the header below.  autom4te will output the name of
       # the file in the diagnostic anyway.
       $output = "m4_if(m4_PACKAGE_VERSION, [$ac_version],,
-[m4_fatal([this file was generated for autoconf $ac_version.
-You have another version of autoconf.  If you want to use that,
-you should regenerate the build system entirely.], [63])])
+[m4_warning([this file was generated for autoconf $ac_version.
+You have another version of autoconf.  It may work, but is not guaranteed to.
+If you have problems, you may need to regenerate the build system entirely.
+To do so, use the procedure documented by the package, typically `autoreconf'.])])
 
 $output";
     }