url_gcc-core = http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-$(version_gcc)/gcc-core-$(version_gcc).tar.gz
url_gcc-c++ = http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-$(version_gcc)/gcc-g++-$(version_gcc).tar.gz
url_gcc-core = http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-$(version_gcc)/gcc-core-$(version_gcc).tar.gz
url_gcc-c++ = http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-$(version_gcc)/gcc-g++-$(version_gcc).tar.gz