build: use -fstack-check=no when available

Some compilers (such as the one in hardened/Gentoo) default this
option to on which leads to build failures:
src/stacks.c: In function 'call16_back':
src/stacks.c:139:5: error: 'asm' operand has impossible constraints
     asm volatile(
     ^

URL: https://bugs.gentoo.org/559980
Reported-by: Alon Bar-Lev <alonbl@gentoo.org>
Signed-off-by: Magnus Granberg <zorry@gentoo.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/Makefile b/Makefile
index e287530d0008e1d876a0bb9f9ff8a43266d7e1bd..3a0d2e858eb5e0fc3e15bb2f14b5fd5f0d23021d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -63,6 +63,7 @@ COMMONCFLAGS := -I$(OUT) -Isrc -Os -MD -g \
 COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
+COMMONCFLAGS += $(call cc-option,$(CC),-fstack-check=no,)
 COMMA := ,
 
 CFLAGS32FLAT := $(COMMONCFLAGS) -DMODE16=0 -DMODESEGMENT=0