nixpkgs/pkgs/build-support/gcc-cross-wrapper/default.nix
Lluís Batlle i Rossell a263cb814e Fixed some details on cross compilation. Among others:
- Stating better the guile dependencies (native/host) for guile to build
- Fixing cross-linking, through --rpath-link (ld(1) explains well about it
- Made gcc call the linker and the assembler through the gcc wrapper instead of
  directly. I thought this was the source of missing -rpath's, but the source
  of the problem ended up being the lack of --rpath-link. But I think the
  native gcc calls the wrapped ld and as, so let's do the same cross
  compiling.
- Removed the binutilsCross from the glibc expressions. Now they are built
  using the gcc-cross-wrapper, and they were built with the direct gcc and
  binutils before this change.
- I think patchelf and strip don't break the cross-compiled binaries, so I
  reallow them on cross compilation.
- I disable the checkPhase on cross compilation. This made gmp and libtool
  fail when cross compiled, iirc.


svn path=/nixpkgs/branches/stdenv-updates/; revision=18498
2009-11-21 02:42:52 +00:00

37 lines
1.4 KiB
Nix

# 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, noLibc ? false, nativePrefix ? ""
, gcc ? null, libc ? null, binutils ? null, shell ? "", cross ? ""
}:
assert nativeTools -> nativePrefix != "";
assert !nativeTools -> gcc != null && binutils != null;
assert !noLibc -> (!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";
};
passthru = {
inherit cross;
};
}