libtool: compile:  /home/aram/gcc+go-obj/./gcc/xgcc -B/home/aram/gcc+go-obj/./gcc/ -B/home/aram/gcc+go/i386-pc-solaris2.11/bin/ -B/home/aram/gcc+go/i386-pc-solaris2.11/lib/ -isystem /home/aram/gcc+go/i386-pc-solaris2.11/include -isystem /home/aram/gcc+go/i386-pc-solaris2.11/sys-include -DHAVE_CONFIG_H -I. -I/home/aram/gcc+go-src/libgo -I /home/aram/gcc+go-src/libgo/runtime -I/home/aram/gcc+go-src/libgo/../libffi/include -I../libffi/include -pthread -fexceptions -fplan9-extensions -Wall -Wextra -Wwrite-strings -Wcast-qual -Werror -minline-all-stringops -I /home/aram/gcc+go-src/libgo/../libgcc -I ../../gcc/include -g -O2 -MT thread.lo -MD -MP -MF .deps/thread.Tpo -c /home/aram/gcc+go-src/libgo/runtime/thread.c -o thread.o >/dev/null 2>&1
libtool: compile:  /home/aram/gcc+go-obj/./gcc/xgcc -B/home/aram/gcc+go-obj/./gcc/ -B/home/aram/gcc+go/i386-pc-solaris2.11/bin/ -B/home/aram/gcc+go/i386-pc-solaris2.11/lib/ -isystem /home/aram/gcc+go/i386-pc-solaris2.11/include -isystem /home/aram/gcc+go/i386-pc-solaris2.11/sys-include -DHAVE_CONFIG_H -I. -I/home/aram/gcc+go-src/libgo -I /home/aram/gcc+go-src/libgo/runtime -I/home/aram/gcc+go-src/libgo/../libffi/include -I../libffi/include -pthread -fexceptions -fplan9-extensions -Wall -Wextra -Wwrite-strings -Wcast-qual -Werror -minline-all-stringops -I /home/aram/gcc+go-src/libgo/../libgcc -I ../../gcc/include -g -O2 -MT yield.lo -MD -MP -MF .deps/yield.Tpo -c /home/aram/gcc+go-src/libgo/runtime/yield.c  -fPIC -DPIC -o .libs/yield.o
/home/aram/gcc+go-src/libgo/runtime/yield.c: In function 'runtime_osyield':
/home/aram/gcc+go-src/libgo/runtime/yield.c:41:3: error: implicit declaration of function 'pthread_yield' [-Werror=implicit-function-declaration]
cc1: all warnings being treated as errors

gmake[4]: *** [yield.lo] Error 1
gmake[4]: *** Waiting for unfinished jobs....
mv -f .deps/thread.Tpo .deps/thread.Plo
mv -f .deps/mgc0.Tpo .deps/mgc0.Plo
gmake[4]: Leaving directory `/home/aram/gcc+go-obj/i386-pc-solaris2.11/libgo'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory `/home/aram/gcc+go-obj/i386-pc-solaris2.11/libgo'
gmake[2]: *** [all] Error 2
gmake[2]: Leaving directory `/home/aram/gcc+go-obj/i386-pc-solaris2.11/libgo'
gmake[1]: *** [all-target-libgo] Error 2
gmake[1]: Leaving directory `/home/aram/gcc+go-obj'
gmake: *** [all] Error 2