Add AC_AIX.

diff --git a/configure1.in b/configure1.in
index 3f3e53c5d8bbf9152dc0f5277c114258565aead0..f101ac7e8a474850870fed1bfa25225a8f826904 100755 (executable)
--- a/configure1.in
+++ b/configure1.in
@@ -1177,6 +1177,7 @@ AC_PROG_INSTALL
 AC_PROG_YACC
 
 dnl checks for UNIX variants that set `DEFS'
+AC_AIX
 
 dnl checks for header files
 AC_HAVE_HEADERS(sys/timeb.h sys/time.h unistd.h)