Date: Thu, 28 Jul 2011 23:26:53 GMT From: Robert Millan <rmh@debian.org> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/159278: [PATCH] FreeBSD compiler extensions Message-ID: <201107282326.p6SNQrRR032884@red.freebsd.org> Resent-Message-ID: <201107282330.p6SNU9bb029724@freefall.freebsd.org>
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>Number: 159278 >Category: kern >Synopsis: [PATCH] FreeBSD compiler extensions >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Thu Jul 28 23:30:08 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Robert Millan >Release: Debian GNU/kFreeBSD "sid" >Organization: >Environment: >Description: This patch conditionalizes a pair of FreeBSD compiler extensions so that its CFLAGS are only used on FreeBSD. See also: http://lists.freebsd.org/pipermail/freebsd-hackers/2011-July/035766.html >How-To-Repeat: >Fix: Patch attached with submission follows: Index: sys/conf/kern.mk =================================================================== --- sys/conf/kern.mk (revision 223736) +++ sys/conf/kern.mk (working copy) @@ -1,11 +1,21 @@ # $FreeBSD$ +.if !defined(OPSYS) +OPSYS!= uname -s +.endif + # # Warning flags for compiling the kernel and components of the kernel: # +.if ${OPSYS} == "FreeBSD" +# FreeBSD extension, not available in upstream GCC +format_extensions= -fformat-extensions +no_align_long_strings= -mno-align-long-strings +.endif + CWARNFLAGS?= -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \ -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual \ - -Wundef -Wno-pointer-sign -fformat-extensions \ + -Wundef -Wno-pointer-sign ${format_extensions} \ -Wmissing-include-dirs -fdiagnostics-show-option # # The following flags are next up for working on: @@ -32,7 +42,7 @@ # .if ${MACHINE_CPUARCH} == "i386" .if ${CC:T:Mclang} != "clang" -CFLAGS+= -mno-align-long-strings -mpreferred-stack-boundary=2 -mno-sse +CFLAGS+= ${no_align_long_strings} -mpreferred-stack-boundary=2 -mno-sse .else CFLAGS+= -mno-aes -mno-avx .endif >Release-Note: >Audit-Trail: >Unformatted:
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