Using built-in specs. COLLECT_GCC=./cc COLLECT_LTO_WRAPPER=/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.3/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ./configure --prefix=/gcc49 --enable-languages=c,c++ --enable-checking=release --disable-multilib Thread model: posix gcc version 4.9.3 (GCC)