nixpkgs/pkgs/development/misc/avr/gcc/default.nix
Kier Davis 6bfa42218d
avrgcc: bake path to avr-ar into avr-gcc-ar
gcc provides wrappers for binutils' ar, nm and ranlib
executables, which must be used instead when using link-time
optimisation. See also:
http://manpages.ubuntu.com/manpages/zesty/man1/aarch64-linux-gnu-gcc-ar-5.1.html

The upstream version of avr-gcc-ar searches in paths passed to
the configure script for the avr-ar binary that it wraps, falling
back to searching PATH instead. Thus currently avr-gcc-ar works on
Nix, but only if avrbinutils is already in the environment.

This change bakes the path to avr-ar into avr-gcc-ar, since its path
is known at compile time. It also no longer searches PATH, meaning the
user's local environment won't override this path.

Note that avr-gcc-nm and avr-gcc-ranlib are compiled from the same
source file as avr-gcc-ar, just with different compiler flags.

Testing on master (without avrbinutils in the environment):

    $ nix-build -A avrgcc
    $ result/bin/avr-gcc-ar --version
    result/bin/avr-gcc-ar: Cannot find binary 'avr-ar'

Testing on branch with this fix:

    $ nix-build -A avrgcc
    $ result/bin/avr-gcc-ar --version
    GNU ar (GNU Binutils) 2.26.20160125
    ...
2018-01-12 00:48:35 +00:00

61 lines
1.4 KiB
Nix

{ stdenv, fetchurl, gmp, mpfr, libmpc, zlib, avrbinutils, texinfo }:
let
version = "5.4.0";
in
stdenv.mkDerivation {
name = "avr-gcc-${version}";
src = fetchurl {
url = "mirror://gcc/releases/gcc-${version}/gcc-${version}.tar.bz2";
sha256 = "0fihlcy5hnksdxk0sn6bvgnyq8gfrgs8m794b1jxwd1dxinzg3b0";
};
patches = [
./avrbinutils-path.patch
];
# avrbinutils-path.patch introduces a reference to @avrbinutils@, substitute
# it now.
postPatch = ''
substituteInPlace gcc/gcc-ar.c --subst-var-by avrbinutils ${avrbinutils}
'';
buildInputs = [ gmp mpfr libmpc zlib avrbinutils ];
nativeBuildInputs = [ texinfo ];
hardeningDisable = [ "format" ];
stripDebugList= [ "bin" "libexec" ];
enableParallelBuilding = true;
configurePhase = ''
mkdir gcc-build
cd gcc-build
../configure \
--prefix=$out \
--host=$CHOST \
--build=$CHOST \
--target=avr \
--with-as=${avrbinutils}/bin/avr-as \
--with-gnu-as \
--with-gnu-ld \
--with-ld=${avrbinutils}/bin/avr-ld \
--with-system-zlib \
--disable-install-libiberty \
--disable-nls \
--disable-libssp \
--with-dwarf2 \
--enable-languages=c,c++'';
meta = with stdenv.lib; {
description = "GNU Compiler Collection, version ${version} for AVR microcontrollers";
homepage = http://gcc.gnu.org;
license = licenses.gpl3Plus;
platforms = platforms.unix;
maintainers = with maintainers; [ mguentner ];
};
}