[src/trunk]: src/external/bsd/flex/include Only define M4 if it wasn't set on...

[joerg <joerg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1241248f9afb
branches:  trunk
changeset: 785923:1241248f9afb
user:      joerg <joerg%NetBSD.org@localhost>
date:      Sat Apr 06 15:25:51 2013 +0000

description:
Only define M4 if it wasn't set on the command line.

diffstat:

 external/bsd/flex/include/config.h |  2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diffs (13 lines):

diff -r 1d11c22b75d5 -r 1241248f9afb external/bsd/flex/include/config.h
--- a/external/bsd/flex/include/config.h        Sat Apr 06 14:57:38 2013 +0000
+++ b/external/bsd/flex/include/config.h        Sat Apr 06 15:25:51 2013 +0000
@@ -144,7 +144,9 @@
 #define HAVE__BOOL 1
 
 /* Define to the m4 executable name. */
+#ifndef M4
 #define M4 "/usr/bin/m4"
+#endif
 
 /* Define to 1 if your C compiler doesn't accept -c and -o together. */
 /* #undef NO_MINUS_C_MINUS_O */