Hi, I looked at the config.log in libgcc and As Andi predict, it is a problem of libmpc (please find bellow a snipset of config.log input ) but mpc is well installed and when I enable the sample_fe front end, the configure, make and make install work perfectly with gcc 4.4.4 the problem comes from dev_gcc that I download from git, although I am using the last version of mpc: 0.82. should I use other version ?? I verified that the file libmpc.so.2 exists in the /usr/local/lib but tthe config.log said "cannot open shared object file: No such file or directory" any idea ?? configure:2993: /export/home/charfi/Bureau/objgcc2/./gcc/xgcc -B/export/home/charfi/Bureau/objgcc2/./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 -V >&5 xgcc: error: unrecognized option '-V' xgcc: fatal error: no input files compilation terminated. configure:3004: $? = 1 configure:2993: /export/home/charfi/Bureau/objgcc2/./gcc/xgcc -B/export/home/charfi/Bureau/objgcc2/./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 -qversion >&5 xgcc: error: unrecognized option '-qversion' xgcc: fatal error: no input files compilation terminated. configure:3004: $? = 1 configure:3020: /export/home/charfi/Bureau/objgcc2/./gcc/xgcc -B/export/home/charfi/Bureau/objgcc2/./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 -o conftest -g -O2 conftest.c >&5 /export/home/charfi/Bureau/objgcc2/./gcc/cc1: error while loading shared libraries: libmpc.so.2: cannot open shared object file: No such file or directory configure:3023: $? = 1 configure:3211: checking for suffix of object files configure:3233: /export/home/charfi/Bureau/objgcc2/./gcc/xgcc -B/export/home/charfi/Bureau/objgcc2/./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 -c -g -O2 conftest.c >&5 /export/home/charfi/Bureau/objgcc2/./gcc/cc1: error while loading shared libraries: libmpc.so.2: cannot open shared object file: No such file or directory configure:3237: $? = 1 configure: failed program was: | /* confdefs.h */ | #define PACKAGE_NAME "GNU C Runtime Library" | #define PACKAGE_TARNAME "libgcc" | #define PACKAGE_VERSION "1.0" | #define PACKAGE_STRING "GNU C Runtime Library 1.0" | #define PACKAGE_BUGREPORT "" | #define PACKAGE_URL "http://www.gnu.org/software/libgcc/" | /* end confdefs.h. */ | | int | main () | { | | ; | return 0; | } configure:3251: error: in `/export/home/charfi/Bureau/objgcc2/i686-pc-linux-gnu/libgcc': configure:3254: error: cannot compute suffix of object files: cannot compile ----- Message d'origine ---- De : Andi Hellmund <mail@xxxxxxxxxxxxxxxx> À : charfi asma <charfiasma@xxxxxxxx> Cc : Philip Herron <redbrain@xxxxxxxxxxx>; gcc-help@xxxxxxxxxxx Envoyé le : Lun 23 août 2010, 22h 32min 51s Objet : Re: [GCC front end] trying to install sample_fe but fail in make Hey ASMA, > I used git to get the current gcc-dev directory and I tried to install python, >gcalc and sample_fe at the same time. > I configured with and It worked when I call make bootstrap, I get an error >dealing with the GTY (GTY must be declared before identifier) in the sfe1.h >(sample_fe front end) Yes, this might occur if you use older versions (for example built for 4.4) in 4.5. builds. The handling of GTY(()) slightly changed with 4.5 . But, you already corrected it accordingly. > checking for suffix of object files... configure: error: in >`/export/home/charfi/objdir/i686-pc-linux-gnu/libgcc': > configure: error: cannot compute suffix of object files: cannot compile > See `config.log' for more details. You'll need to look at the file config.log in directory /export/home/charfi/objdir/i686-pc-linux-gnu/libgcc. It will tell you what's missing. Maybe you're just missing a depending library (mpc, mpfr, gmp). Cheers, Andi