Hi, I met a problem with gcc 7.3.0 compile on my OS suse 12 sp2. I installed gmp-6.1.0.tar.bz2 isl-0.16.1.tar.bz2 mpc-1.0.3.tar.gz mpfr-3.1.4.tar.bz2 first and configured as follows: ../configure --enable-checking=release --enable-languages=c,c++ --disable-multilib Then I execute sudo make to begin the compile, while it failed checking for int64_t... no checking for long long int... no checking for intmax_t... no checking for intptr_t... no checking for uint8_t... no checking for uint16_t... no checking for uint32_t... no checking for uint64_t... no checking for unsigned long long int... no checking for uintmax_t... no checking for uintptr_t... no configure: error: uint64_t or int64_t not found Makefile:4277: recipe for target 'configure-stage1-gcc' failed make[2]: *** [configure-stage1-gcc] Error 1 make[2]: Leaving directory '/usr/local/src/gcc-7.3.0/gcc-build-7.3.0' Makefile:22759: recipe for target 'stage1-bubble' failed make[1]: *** [stage1-bubble] Error 2 make[1]: Leaving directory '/usr/local/src/gcc-7.3.0/gcc-build-7.3.0' Makefile:933: recipe for target 'all' failed make: *** [all] Error 2 I did’t get solution on Internet, I’ll appreciate if you can give some advices to solve this problem. Regards, Zhang