kern/159278: [PATCH] FreeBSD compiler extensions
Robert Millan
rmh at debian.org
Thu Jul 28 23:30:09 UTC 2011
>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:
More information about the freebsd-bugs
mailing list