srcdir/config.guess: x86_64-pc-linux-gnu gcc -v output: Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/9.2.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../srcdir/configure --disable-multilib Thread model: posix gcc version 9.2.0 (GCC) It was a Linux build. Distribution name&version: Ubuntu 18.04.3 LTS Linux kernel version: 5.0.0-32-generic glibc version: 2.27-3ubuntu (both amd64 and i386)