Hello, When I am compiling gcc 4.7.1 on Slackware 14, I got an error: $ ../gcc-4.7.1/configure --prefix=/usr/i686-pc-mingw32 --target=i686-pc-mingw32 --disable-shared --enable-languages=c --disable-nls $ make [...] checking for i686-pc-mingw32-gcc... /home/yugiohjcj/documents/downloads/software/gcc-4.7.1-tmp/./gcc/xgcc -B/home/yugiohjcj/documents/downloads/software/gcc-4.7.1-tmp/./gcc/ -L/home/yugiohjcj/documents/downloads/software/gcc-4.7.1-tmp/i686-pc-mingw32/winsup/mingw -L/home/yugiohjcj/documents/downloads/software/gcc-4.7.1-tmp/i686-pc-mingw32/winsup/w32api/lib -isystem /home/yugiohjcj/documents/downloads/software/gcc-4.7.1/winsup/mingw/include -isystem /home/yugiohjcj/documents/downloads/software/gcc-4.7.1/winsup/w32api/include -B/usr/i686-pc-mingw32/i686-pc-mingw32/bin/ -B/usr/i686-pc-mingw32/i686-pc-mingw32/lib/ -isystem /usr/i686-pc-mingw32/i686-pc-mingw32/include -isystem /usr/i686-pc-mingw32/i686-pc-mingw32/sys-include checking for suffix of object files... configure: error: in `/home/yugiohjcj/documents/downloads/software/gcc-4.7.1-tmp/i686-pc-mingw32/libgcc': configure: error: cannot compute suffix of object files: cannot compile See `config.log' for more details. make[1]: *** [configure-target-libgcc] Error 1 make[1]: Leaving directory `/home/yugiohjcj/documents/downloads/software/gcc-4.7.1-tmp' make: *** [all] Error 2 And this is what I can see in the config.log file: $ cat config.log | grep error gcc: error: unrecognized command line option '-V' gcc: fatal error: no input files gcc: error: unrecognized command line option '-qversion' gcc: fatal error: no input files g++: error: unrecognized command line option '-V' g++: fatal error: no input files g++: error: unrecognized command line option '-qversion' g++: fatal error: no input files collect2: error: ld returned 1 exit status | /* Override any GCC internal prototype to avoid an error. conftest.c:10:19: fatal error: ppl_c.h: No such file or directory stage2_werror_flag='' $ cat config.log | grep cannot /usr/lib/gcc/i486-slackware-linux/4.7.1/../../../../i486-slackware-linux/bin/ld: cannot find -lpwl Do you see why I got this error ? Thank you. Regards.