https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116119
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> --- I can build fine using these steps: export TARGET=arm-linux-gnueabihf export PREFIX=/tmp/rpi-toolchain wget https://ftp.gnu.org/gnu/binutils/binutils-2.31.tar.gz tar xf binutils-2.31.tar.gz cd bobj ../binutils-2.31/configure --target=${TARGET} --prefix=${PREFIX} --with-arch=armv8-a --with-fpu=vfp --with-float=hard --disable-multilib make -j10 && make install cd ../ ~/src/gcc/gcc-8/configure --prefix=${PREFIX} --target=${TARGET} --enable-languages=c,c++ --disable-multilib --enable-multiarch --with-arch=armv8-a --with-fpu=vfp --with-float=hard make all-gcc -j10 Where ~/src/gcc/gcc-8 contains the gcc-8.5.0 sources and gmp, mpfr and mpc sources. I don't have a sysroot, so I can't build libgcc and the rest of the compiler, but I don't get an error from configure-gmp like in comment 7. My build gets past that without problems. So you must be doing something differently. Start again. Remove the entire working directory that you're building in, as it's clearly messed up (see comment 11, with the error taken from the logs in comment 6). Build and install binutils first. Use contrib/download_prerequisites after un-tarring the gcc sources. Build and install gcc. Don't reconfigure in the same directory where you've already got a failed build using a different configuration. Don't mess with LD_LIBRARY_PATH. Use gcc-8.5.0 not 8.3.0 because it has various bugs fixed (probably nothing relevant to your problem, it's just a better release). The instructions you're following seem broken: cd ~/rpi0/toolchain/sources/gcc-8.3.0 contrib/download_prerequisites mkdir -p ../../build/gcc2 pushd build/gcc2 ^^^^^^^^^^ that's not the directory that was just created, should be ../../ ../../src/gcc-8.3.0/configure ^^^ that's not where the sources are, should be sources not src
