On 6 June 2012 20:14, parc wrote: > > The error comes up, when xgcc, in the object directory, compiles the > libgcc/unwind-dw2.c file from the source directory into the object > directory. "/usr/local/zich" is the objdir ; "usr/local/gcc-4.7.0" the > srcdir. > Maybe i setup something wrong on the configuration. But the libpthread.so > library seems to work fine when compiling code under gcc 4.6.1 with the > "-phtread" compiler option. I think this option should somehow be invoked > for the make scripts of gcc 4.7.0. But i don't know how and where to set it. You don't need to. Your problem is not a linker error. > /usr/local/zich/./gcc/xgcc -B/usr/local/zich/./gcc/ > -B/usr/i686-linux-gnu/bin/ -B/usr/i686-linux-gnu/lib/ -isystem > /usr/i686-linux-gnu/include -isystem /usr/i686-linux-gnu/sys-include -g > -O2 -O2 -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual > -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem > ./include -fpic -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector > -fpic -I. -I. -I../.././gcc -I../../../gcc-4.7.0/./libgcc > -I../../../gcc-4.7.0/./libgcc/. -I../../../gcc-4.7.0/./libgcc/../gcc > -I../../../gcc-4.7.0/./libgcc/../include > -I../../../gcc-4.7.0/./libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT > -DUSE_TLS -o unwind-dw2.o -MT unwind-dw2.o -MD -MP -MF unwind-dw2.dep > -fexceptions -c ../../../gcc-4.7.0/./libgcc/unwind-dw2.c -fvisibility=hidden > -DHIDE_EXPORTS > In file included from ../../../gcc-4.7.0/./libgcc/gthr.h:150:0, > from ../../../gcc-4.7.0/./libgcc/unwind-dw2.c:38: > ./gthr-default.h:140:1: error: ‘pthread_once’ undeclared here (not in a > function) Something is wrong with your system, gthr-default.h should be a symlink to gthr-posix.h which includes <pthread.h> which declares pthread_once. If pthread_once is undeclared then your <pthread.h> is broken or there is another file of that name somewhere on your system. > These are the configure options i made: > > $ ../gcc-4.7.0/./configure --disable-multilib --enable-threads=posix > --with-tune=generic --prefix=/usr --with-pkgversion=Ubuntu/Linaro > 4.7.0-9ubuntu3 --enable-shared --libexecdir=/usr/lib --with-sysroot=/ > --enable-plugin --enable-libgomp --enable-objc-gc -disable-tls > --enable-version-specific-runtime-libs --with-gmp=/usr/local/5.0.5 > --with-mpfr-include=/usr/include --with-mpfr-lib=/usr/lib > --with-mpc-include=/usr/include --with-mpc-lib=/usr/lib These options are unnecessary, /usr/include will always be searched for headers and /usr/lib will be searched for libraries. > --enable-gather-detailed-mem-stats --enable-coverage=opt > --enable-checking=all --with-dwarf2 --with-fpmath=sse Are you sure you want --enable-checking=all enabled? > --with-endian=little,big --with-arch-32=i686 --with-endian doesn't do anything for i686, why are you using it? > --enable-languages=c,ada,c++,fortran,go,java,lto,objc,obj-c++ > --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu Have you tried simplifying your configure command, instead of using a load of redundant or invalid options?
