# The Nix `gcc' stdenv.mkDerivation is not directly usable, since it doesn't # know where the C library and standard header files are. Therefore # the compiler produced by that package cannot be installed directly # in a user environment and used from the command line. This # stdenv.mkDerivation provides a wrapper that sets up the right environment # variables so that the compiler and the linker just "work". { name ? "", stdenv, nativeTools, nativeLibc, nativePrefix ? "" , gcc ? null, libc ? null, binutils ? null, shell ? "", cross ? "" }: assert nativeTools -> nativePrefix != ""; assert !nativeTools -> gcc != null && binutils != null; assert !nativeLibc -> libc != null; stdenv.mkDerivation { builder = ./builder.sh; setupHook = ./setup-hook.sh; gccWrapper = ./gcc-wrapper.sh; ldWrapper = ./ld-wrapper.sh; utils = ./utils.sh; addFlags = ./add-flags; inherit nativeTools nativeLibc nativePrefix gcc libc binutils; crossConfig = if (cross != null) then cross.config else null; name = if name == "" then gcc.name else name; langC = if nativeTools then true else gcc.langC; langCC = if nativeTools then true else gcc.langCC; langF77 = if nativeTools then false else gcc ? langFortran; shell = if shell == "" then stdenv.shell else shell; meta = if gcc != null then gcc.meta else { description = "System C compiler wrapper"; }; }