Port better to AIX.

* configure.ac (CFLAGS): Append -O if the user did not specify CFLAGS,
we did not already infer an optimization option, and -O works.
AIX xlc needs -O, otherwise garbage collection doesn't work.
* src/lisp.h (ENUM_BF) [__IBMC__]: Make it 'unsigned int' here, too,
to pacify AIX xlc.

Fixes: debbugs:14258

1 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 5f74726a743..cf1d4f0d54e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-04-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Port better to AIX (Bug#14258).
+        * configure.ac (CFLAGS): Append -O if the user did not specify CFLAGS,
+        we did not already infer an optimization option, and -O works.
+        AIX xlc needs -O, otherwise garbage collection doesn't work.
+
 2013-04-22  Paul Eggert  <eggert@cs.ucla.edu>
 
         * make-dist: Do not distribute admin/unidata/Makefile.