[src/trunk]: src/share/mk As discussed on tech-toolchain: untill gcc is fixed...

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

details:   https://anonhg.NetBSD.org/src/rev/021b81850ef7
branches:  trunk
changeset: 793153:021b81850ef7
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Jan 28 19:41:52 2014 +0000

description:
As discussed on tech-toolchain: untill gcc is fixed (or our ABI changed, ...)
make stack protection warnings non-fatal if using gcc 4.8 on sh3/m68k/vax.

diffstat:

 share/mk/bsd.sys.mk |  15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletions(-)

diffs (29 lines):

diff -r 8f8ed3a38da0 -r 021b81850ef7 share/mk/bsd.sys.mk
--- a/share/mk/bsd.sys.mk       Tue Jan 28 19:26:32 2014 +0000
+++ b/share/mk/bsd.sys.mk       Tue Jan 28 19:41:52 2014 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.sys.mk,v 1.236 2014/01/16 01:19:46 christos Exp $
+#      $NetBSD: bsd.sys.mk,v 1.237 2014/01/28 19:41:52 martin Exp $
 #
 # Build definitions used for NetBSD source tree builds.
 
@@ -109,6 +109,19 @@
 CPPFLAGS+=     -D_FORTIFY_SOURCE=2
 .endif
 COPTS+=        -fstack-protector -Wstack-protector 
+
+# gcc 4.8 on m68k erroneously does not protect functions with
+# variables needing special alignement, see
+#      http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59674
+# (the underlying issue for sh and vax may be different, needs more
+# investigation, symptoms are similar but for different sources)
+.if "${ACTIVE_CC}" == "gcc" && "${HAVE_GCC}" == "48" && \
+       ( ${MACHINE_CPU} == "sh3" || \
+         ${MACHINE_ARCH} == "vax" || \
+         ${MACHINE_CPU} == "m68k" )
+COPTS+=        -Wno-error=stack-protector 
+.endif
+
 COPTS+=        ${${ACTIVE_CC} == "clang":? --param ssp-buffer-size=1 :}
 COPTS+=        ${${ACTIVE_CC} == "gcc":? --param ssp-buffer-size=1 :}
 .endif