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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
.github CODEOWNERS: Add me, @Ericson2314, to a few things 2017-12-18 19:00:43 -05:00
doc doc/cross-compilation: fixes typos 2018-01-11 16:26:30 +00:00
lib callCabal2nix: Fix calling with a path in the store. 2018-01-11 10:17:56 -05:00
maintainers/scripts Fix copy-tarballs.pl 2018-01-04 18:15:20 +01:00
nixos Don't set 'config.xorg = {}' 2018-01-11 19:31:05 +01:00
pkgs avrgcc: bake path to avr-ar into avr-gcc-ar 2018-01-12 00:48:35 +00:00
.editorconfig Do not trim trailing whitespace in patch files 2017-01-12 23:44:26 +01:00
.gitignore kde5: consolidate packages into desktops/kde-5 2016-03-01 10:36:00 -06:00
.version Impala makes packaging a life-long addiction 2017-08-30 23:13:56 +02:00
COPYING 2018 will be the year of NixOS 2018-01-04 17:59:52 -05:00
README.md README: Use HTTPS for all hyperlinks 2017-11-22 19:51:40 +01:00
default.nix default.nix: Provide correct instructions how to upgrade Nix 2017-03-18 21:04:07 +02:00

README.md

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Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the Hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:

% git remote add channels git://github.com/NixOS/nixpkgs-channels.git

For stability and maximum binary package support, it is recommended to maintain custom changes on top of one of the channels, e.g. nixos-17.09 for the latest release and nixos-unstable for the latest successful build of master:

% git remote update channels
% git rebase channels/nixos-17.09

For pull-requests, please rebase onto nixpkgs master.

NixOS Linux distribution source code is located inside nixos/ folder.

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