[src/trunk]: src/share/mk Don't special case aarch64 and add -fomit-frame-poi...

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

details:   https://anonhg.NetBSD.org/src/rev/11d006454995
branches:  trunk
changeset: 744641:11d006454995
user:      maya <maya%NetBSD.org@localhost>
date:      Sat Feb 08 21:16:53 2020 +0000

description:
Don't special case aarch64 and add -fomit-frame-pointer to builds.

This behaviour is probably due to a past behaviour of clang, where it
always emitted frame pointer code.
This is no longer true for clang on netbsd, and I don't think it was true
for GCC.

Meanwhile, this flag bleeds into pkgsrc where it breaks random packages,
requiring workarounds like lang/ruby*-base/hacks.mk.

diffstat:

 share/mk/sys.mk |  4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diffs (18 lines):

diff -r 488619d07df1 -r 11d006454995 share/mk/sys.mk
--- a/share/mk/sys.mk   Sat Feb 08 19:58:36 2020 +0000
+++ b/share/mk/sys.mk   Sat Feb 08 21:16:53 2020 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: sys.mk,v 1.142 2020/01/08 22:04:24 christos Exp $
+#      $NetBSD: sys.mk,v 1.143 2020/02/08 21:16:53 maya Exp $
 #      @(#)sys.mk      8.2 (Berkeley) 3/21/94
 #
 # This file contains the basic rules for make(1) and is read first
@@ -33,8 +33,6 @@
 DBG?=  -O2 -fno-reorder-blocks
 .elif ${MACHINE_ARCH} == "coldfire"
 DBG?=  -O1
-.elif !empty(MACHINE_ARCH:Maarch64*)
-DBG?=  -O2 ${"${.TARGET:M*.po}" == "":? -fomit-frame-pointer:}
 .else
 DBG?=  -O2
 .endif