Date: Thu, 20 Feb 2014 23:42:49 +0100 (CET) From: Tijl Coosemans <tijl@FreeBSD.org> To: FreeBSD-gnats-submit@freebsd.org Subject: ports/186929: [patch] Mk/bsd.port.mk: unconditionally add -fno-strict-aliasing Message-ID: <201402202242.s1KMgnth025704@kalimero.tijl.coosemans.org> Resent-Message-ID: <201402202250.s1KMo0vZ024544@freefall.freebsd.org>
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>Number: 186929
>Category: ports
>Synopsis: [patch] Mk/bsd.port.mk: unconditionally add -fno-strict-aliasing
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-ports-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Thu Feb 20 22:50:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator: Tijl Coosemans
>Release: FreeBSD 11.0-CURRENT i386
>Organization:
>Environment:
>Description:
Currently bsd.port.mk adds -fno-strict-aliasing to CFLAGS when it
detects -O2, -O3 or -Os, but clang has new optimisation flags such
as -O4, -Oz and -Ofast that also need it.
The attached patch adds -fno-strict-aliasing unconditionally. There's
no harm in adding it to -O0 and -O1.
>How-To-Repeat:
>Fix:
--- bsd.port.mk.nostrictaliasing.patch begins here ---
Index: Mk/bsd.port.mk
===================================================================
--- Mk/bsd.port.mk (revision 345014)
+++ Mk/bsd.port.mk (working copy)
@@ -2053,7 +2053,7 @@ MAKE_ENV+= PREFIX=${PREFIX} \
# a lot of ports.
.if !defined(WITHOUT_NO_STRICT_ALIASING)
.if ${CC} != "icc"
-.if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
+.if empty(CFLAGS:M-fno-strict-aliasing)
CFLAGS+= -fno-strict-aliasing
.endif
.endif
--- bsd.port.mk.nostrictaliasing.patch ends here ---
>Release-Note:
>Audit-Trail:
>Unformatted:
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