Date: Thu, 23 Sep 2010 08:51:34 +0200 From: Roman Divacky <rdivacky@freebsd.org> To: Bartosz Stec <admin@kkip.pl> Cc: Rene Ladan <rene@freebsd.org>, current@freebsd.org Subject: Re: Clang now builds world and kernel, on i386 and amd64 Message-ID: <20100923065134.GA31455@freebsd.org> In-Reply-To: <4C9A7203.8010701@kkip.pl> References: <4C99A53E.7060707@FreeBSD.org> <AANLkTi=_ZpYZ7XwHJOYuRMOFCGebRwD=YEYORKnMmC0s@mail.gmail.com> <4C9A32B8.60204@kkip.pl> <4C9A6A38.4080307@freebsd.org> <4C9A7203.8010701@kkip.pl>
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On Wed, Sep 22, 2010 at 11:15:47PM +0200, Bartosz Stec wrote:
> On 2010-09-22 22:42, Rene Ladan wrote:
> >>
> >>Just tried it. World has been builded without any problems, but stge
> >>kernel module failed to compile:
> >>
> >>===> stge (all)
> >>clang -O2 -pipe -march=athlon-xp -fno-strict-aliasing -D_KERNEL
> >>-DKLD_MODULE -nostdinc -DHAVE_KERNEL_OPTION_HEADERS -include
> >>/usr/obj/usr/src/sys/ATHLON9/opt_global.h -I. -I@ -I@/contrib/altq
> >>-fno-common -I/usr/obj/usr/src/sys/ATHLON9 -mno-mmx -mno-3dnow
> >>-mno-sse -mno-sse2 -mno-sse3 -ffreestanding -fstack-protector
> >>-std=iso9899:1999 -fstack-protector -Wall -Wredundant-decls
> >>-Wnested-externs -Wstrict-prototypes -Wmissing-prototypes
> >>-Wpointer-arith -Winline -Wcast-qual -Wundef -Wno-pointer-sign
> >>-fformat-extensions -c /usr/src/sys/modules/stge/../../dev/stge/if_stge.c
> >>/usr/src/sys/modules/stge/../../dev/stge/if_stge.c:1947:5: error:
> >>'break' statement not in loop or switch statement
> >> break;
> >> ^
> >>/usr/src/sys/modules/stge/../../dev/stge/if_stge.c:1953:6: error:
> >>'break' statement not in loop or switch statement
> >> break
> >>
> >Hmm, works for me:
> >acer# ls -l /boot/kernel/if_stge.ko*
> >-r-xr-xr-x 1 root wheel 39344 Sep 22 13:34 /boot/kernel/if_stge.ko
> >-r-xr-xr-x 1 root wheel 218248 Sep 22 13:34
> >/boot/kernel/if_stge.ko.symbols
> >acer#
> >
> >This is with the default GENERIC kernel.
> >
> >Rene
> Problem wasn't clang related, but caused by stge changes in r212973, and
> it has already been fixed (in r213000).
> I will post comparison of building times and results using
> gcc/clang/ccache/noccache on my box soon :)
if you want to post any build-time numbers for clang please
-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS #-DNDEBUG
uncomment the -DNDEBUG on this line in lib/clang/clang.build.mk
and rebuild it otherwise you are using Release+Asserts build of
clang which is some 30% slower than the normal one...
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