nixpkgs/pkgs/build-support/gcc-wrapper/default.nix
Eelco Dolstra b342dcb13b * gcc-wrapper: separately store the flags necessary to find GCC and
Glibc.  This is useful when building GCC.
* gcc-wrapper: the dynamic linker has a different name on x86_64 and
  powerpc.
* gcc-wrapper: "glibc" -> "libc", because someday we might support
  different C libraries.
* gcc: don't do a multilib build (e.g., 32-bit support on x86_64),
  don't need it.
* gcc: merge in support for static builds.
* gcc: various simplifications in the compiler/linker flags, hope they
  work.

svn path=/nixpkgs/trunk/; revision=6823
2006-10-24 18:26:23 +00:00

43 lines
1.7 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, nativePrefix ? ""
, gcc ? null, libc ? null, binutils ? null, shell ? ""
}:
assert nativeTools -> nativePrefix != "";
assert !nativeTools -> gcc != null && binutils != null;
assert !nativeLibc -> libc != null;
stdenv.mkDerivation {
builder = ./builder.sh;
substitute = ../substitute/substitute.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;
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.langF77;
shell = if shell == "" then stdenv.shell else shell;
meta = if gcc != null && (gcc ? meta) then gcc.meta else
{ description = "System C compiler wrapper";
};
# The dynamic linker has different names on different Linux platforms.
dynamicLinker =
if !nativeLibc then
(if stdenv.system == "i686-linux" then "ld-linux.so.2" else
if stdenv.system == "x86_64-linux" then "ld-linux-x86-64.so.2" else
if stdenv.system == "powerpc-linux" then "ld.so.1" else
abort "don't know the name of the dynamic linker for this platform")
else "";
}