Mesa (master): configure.ac: ensure RM is set

[Emil Velikov]

Module: Mesa
Branch: master
Commit: 99c4079c37ac04a0dad4ead3117f786706c80aaf
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=99c4079c37ac04a0dad4ead3117f786706c80aaf

Author: Jonathan Gray <jsg at jsg.id.au>
Date:   Sat Oct 10 17:42:40 2015 +1100

configure.ac: ensure RM is set

GNU make predefines RM to rm -f but this is not required by POSIX
so ensure that RM is set.  This fixes "make clean" on OpenBSD.

v2: use AC_CHECK_PROG

Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
CC: "10.6 11.0" <mesa-stable at lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.l.velikov at gmail.com>

---

 configure.ac |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index 0a33290..d3df195 100644
--- a/configure.ac
+++ b/configure.ac
@@ -107,6 +107,8 @@ AC_SYS_LARGEFILE
 LT_PREREQ([2.2])
 LT_INIT([disable-static])
 
+AC_CHECK_PROG(RM, rm, [rm -f])
+
 AX_PROG_BISON([],
               AS_IF([test ! -f "$srcdir/src/glsl/glcpp/glcpp-parse.c"],
                     [AC_MSG_ERROR([bison not found - unable to compile glcpp-parse.y])]))