https://gcc.gnu.org/pub/gcc/releases/gcc-VERSION/gcc-VERSION.tar.xz gcc https://ftp.gnu.org/gnu/gmp/gmp-6.2.1.tar.xz gcc/gmp https://ftp.gnu.org/gnu/mpfr/mpfr-4.1.0.tar.xz gcc/mpfr https://ftp.gnu.org/gnu/mpc/mpc-1.2.1.tar.gz gcc/mpc files/c99 patches/musl-sched_h-calloc-poison.patch