[csw-maintainers] Undefined symbol __sync_fetch_and_add_4.

[Maciej (Matchek) Blizinski]

2009/11/8 Trygve Laugstøl <trygvis at opencsw.org>:
> I'm trying to build freehdl on build8s, but when it's linking the final
> binary I'm getting an error about a missing symbol "__sync_fetch_and_add_4"
>
> This seems to be a function that use atomic instructions that's not on i386
> and sparc 8 so i686 has to be used. I assume the problem is similar on
> sparc, but I have no idea which flags to use. Does anyone know?
>
> http://gcc.gnu.org/onlinedocs/gcc-4.3.2/gcc/Atomic-Builtins.html#Atomic-Builtins

I just saw the same problem:

gmake[3]: Entering directory
`/home/maciej/src/opencsw/pkg/googletest/trunk/work/build-isa-sparcv8/gtest-1.4.0'
/bin/bash ./libtool --tag=CXX   --mode=link /opt/csw/gcc4/bin/g++  -O2
-pipe -mcpu=v8  -L/opt/csw/gcc4/lib/. -mcpu=v8 -L/opt/csw/lib -o
samples/sample1_unittest samples/sample1_unittest.o
lib/libgtest_main.la samples/libsamples.la
/opt/csw/gcc4/bin/g++ -O2 -pipe -mcpu=v8 -mcpu=v8 -o
samples/.libs/sample1_unittest samples/sample1_unittest.o
-L/opt/csw/gcc4/lib/. -L/opt/csw/lib lib/.libs/libgtest_main.so
/home/maciej/src/opencsw/pkg/googletest/trunk/work/build-isa-sparcv8/gtest-1.4.0/lib/.libs/libgtest.so
samples/.libs/libsamples.a /opt/csw/gcc4/lib/libstdc++.so -lm  -Wl,-R
-Wl,/opt/csw/lib -Wl,-R -Wl,/opt/csw/gcc4/lib
ld: warning: file /opt/csw/gcc4/lib/./libstdc++.so: linked to
/opt/csw/gcc4/lib/libstdc++.so: attempted multiple inclusion of file
Undefined                       first referenced
 symbol                             in file
__sync_fetch_and_add_4
/home/maciej/src/opencsw/pkg/googletest/trunk/work/build-isa-sparcv8/gtest-1.4.0/lib/.libs/libgtest.so
ld: fatal: Symbol referencing errors. No output written to
samples/.libs/sample1_unittest
gmake[3]: *** [samples/sample1_unittest] Error 1

Have you solved it?

Maciej