From b25b09ecf98bf6a32f3732281c2db13be6aeb14c Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Sat, 8 Sep 2012 10:23:42 +0200
Subject: [PATCH] samples/seccomp: fix 31 bit build on s390

On s390 the flag to force 31 builds is -m31 instead of -m32 unlike
on all (?) other architectures.

Fixes this compile error:

  HOSTCC  samples/seccomp/bpf-direct.o
cc1: error: unrecognized command line option "-m32"
make[2]: *** [samples/seccomp/bpf-direct.o] Error 1

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
---
 samples/seccomp/Makefile | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/samples/seccomp/Makefile b/samples/seccomp/Makefile
index 16aa2d424985f..bbbd276659ba5 100644
--- a/samples/seccomp/Makefile
+++ b/samples/seccomp/Makefile
@@ -18,14 +18,22 @@ HOSTCFLAGS_bpf-direct.o += -idirafter $(objtree)/include
 bpf-direct-objs := bpf-direct.o
 
 # Try to match the kernel target.
-ifeq ($(CONFIG_64BIT),)
-HOSTCFLAGS_bpf-direct.o += -m32
-HOSTCFLAGS_dropper.o += -m32
-HOSTCFLAGS_bpf-helper.o += -m32
-HOSTCFLAGS_bpf-fancy.o += -m32
-HOSTLOADLIBES_bpf-direct += -m32
-HOSTLOADLIBES_bpf-fancy += -m32
-HOSTLOADLIBES_dropper += -m32
+ifndef CONFIG_64BIT
+
+# s390 has -m31 flag to build 31 bit binaries
+ifndef CONFIG_S390
+MFLAG = -m32
+else
+MFLAG = -m31
+endif
+
+HOSTCFLAGS_bpf-direct.o += $(MFLAG)
+HOSTCFLAGS_dropper.o += $(MFLAG)
+HOSTCFLAGS_bpf-helper.o += $(MFLAG)
+HOSTCFLAGS_bpf-fancy.o += $(MFLAG)
+HOSTLOADLIBES_bpf-direct += $(MFLAG)
+HOSTLOADLIBES_bpf-fancy += $(MFLAG)
+HOSTLOADLIBES_dropper += $(MFLAG)
 endif
 
 # Tell kbuild to always build the programs
-- 
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