[src/trunk]: src/sys/arch/sun2/conf Compile sun2 kernel with -fno-omit-frame-...

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

details:   https://anonhg.NetBSD.org/src/rev/78ed281c4c9b
branches:  trunk
changeset: 974757:78ed281c4c9b
user:      rin <rin%NetBSD.org@localhost>
date:      Mon Aug 10 06:28:42 2020 +0000

description:
Compile sun2 kernel with -fno-omit-frame-pointer for GCC8 as a work
around for reproducible kernel freezes just after ``Starting postfix.'',
where I cannot even enter DDB nor obtain crash dump.

I still haven't figured out why. Possibly something wrong with -Os
optimization level for GCC/m68k, cf.,
http://mail-index.netbsd.org/port-sun3/2020/07/19/msg000166.html

diffstat:

 sys/arch/sun2/conf/Makefile.sun2 |  7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diffs (21 lines):

diff -r c0679a6eb335 -r 78ed281c4c9b sys/arch/sun2/conf/Makefile.sun2
--- a/sys/arch/sun2/conf/Makefile.sun2  Mon Aug 10 06:27:29 2020 +0000
+++ b/sys/arch/sun2/conf/Makefile.sun2  Mon Aug 10 06:28:42 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.sun2,v 1.24 2018/09/22 12:24:03 rin Exp $
+# $NetBSD: Makefile.sun2,v 1.25 2020/08/10 06:28:42 rin Exp $
 
 # Makefile for NetBSD
 #
@@ -35,6 +35,11 @@
 CFLAGS+=       -msoft-float -fno-defer-pop
 AFLAGS+=       -x assembler-with-cpp
 
+# XXX
+.if ${HAVE_GCC:U0} >= 8
+COPTS+=                -fno-omit-frame-pointer
+.endif
+
 ##
 ## (3) libkern and compat
 ##