[LLVMdev] strange visibility error when compiling llvm-gcc-4.2

Andrew Lenharth
Wed, 06 Feb 2008 17:26:38 -0000

On 2/6/08, Chris Lattner <sabre at nondot.org>
wrote:
>
> On Feb 6, 2008, at 5:18 AM, Duncan Sands wrote:
>
> > Hi,
> >
> >> if /bin/sh ./libtool --mode=compile /s/llvm/obj.gcc42/./gcc/xgcc
-B/
> >> s/llvm/obj.gcc42/./gcc/ -B/usr/local/i686-pc-linux-gnu/bin/
-B/usr/
> >> local/i686-pc-linux-gnu/lib/ -isystem
/usr/local/i686-pc-linux-gnu/
> >> include -isystem /usr/local/i686-pc-linux-gnu/sys-include -
> >> DHAVE_CONFIG_H -I. -I/s/llvm/svn.gcc42/libgomp -I.  -I/s/llvm/
> >> svn.gcc42/libgomp/config/linux/x86 -I/s/llvm/svn.gcc42/libgomp/
> >> config/linux -I/s/llvm/svn.gcc42/libgomp/config/posix -I/s/llvm/
> >> svn.gcc42/libgomp  -Wall -Werror -ftls-model=initial-exec -
> >> march=i486 -mtune=i686 -Wc,-pthread -O2 -g -O2  -MT lock.lo -MD
-MP
> >> -MF ".deps/lock.Tpo" -c -o lock.lo
/s/llvm/svn.gcc42/libgomp/config/
> >> linux/lock.c; \
> >>        then mv -f ".deps/lock.Tpo"
".deps/lock.Plo"; else rm -f
> >> ".deps/lock.Tpo"; exit 1; fi
> >> yes
> >> cc1: warnings being treated as errors
> >> /s/llvm/svn.gcc42/libgomp/team.c:341: warning: visibility
attribute
> >> not supported in this configuration; ignored
> >> /s/llvm/svn.gcc42/libgomp/team.c:341: warning: visibility
attribute
> >> not supported in this configuration; ignored
> >> checking for tanl... make[5]: *** [team.lo] Error 1
> >> ----------------------------------
> >>
> >> Because of the -Werror, this warning is taken as an error
> >> and compilation aborts. I wonder why it warns in the first
> >> place, is something broken with xgcc?
> >
> > I suspect this is due to the recent change by Bill (revision 46747).
>
> Bill's change only affected darwin IIRC.  I don't know that anyone
has
> built GOMP on linux yet, and OpenMP hasn't been widely tested at all.
> I'd suggest using --enable-languages=c,c++

I am seeing the same errors with just building c,c++. (linux x86, also debian)

Andrew