https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90330
--- Comment #29 from Matt Thompson <matthew.thompson at nasa dot gov> --- Also, this did seem to build GCC: CC="/Users/mathomp4/installed/Core/gcc-gfortran/8.2.0/bin/gcc --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" CXX="/Users/mathomp4/installed/Core/gcc-gfortran/8.2.0/bin/g++ --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" ../gcc-9.2.0/configure --prefix=/Users/mathomp4/installed/Core/gcc-gfortran/9.2.0-820loaded --enable-languages=c,c++,fortran --with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk |& tee configure.log So if nothing else, I have a way around the clang issue. I'll inform you on the updated prerequisites build.
