https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80008
--- Comment #1 from Julien <julien at lecomte dot at> --- Forgot to add this: Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/lib/gcc/x86_64-pc-linux-gnu/7.0.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../configure --prefix=/usr/local --enable-languages=c,c++ --disable-multilib --disable-bootstrap --with-system-zlib --disable-nls --libexecdir=/usr/local/lib Thread model: posix gcc version 7.0.1 20170305 (experimental) (GCC) And lastly: gmp-6.1.2 mpc-1.0.3 mpfr-3.1.5