Using built-in specs. COLLECT_GCC=/nix/store/yhbp3fy8bmkqziawl78srgzjwqyy91s1-gcc-6.4.0/bin/gcc COLLECT_LTO_WRAPPER=/nix/store/yhbp3fy8bmkqziawl78srgzjwqyy91s1-gcc-6.4.0/libexec/gcc/x86_64-unknown-linux-gnu/6.4.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: Thread model: posix gcc version 6.4.0 (GCC)