Packaging/32bit Applications: Difference between revisions
imported>Makefu m Makefu moved page Cross Compiling to Packaging/32bit Applications: not really cross-compiling |
imported>Mic92 multilib remark |
||
| Line 3: | Line 3: | ||
'''Question''': I'm invoking gcc with -m32 and it fails to find <code>`gnu/stubs-32.h`</code><br/> | '''Question''': I'm invoking gcc with -m32 and it fails to find <code>`gnu/stubs-32.h`</code><br/> | ||
'''Answer (clever)''': you want to use <code>pkgsi686Linux</code> instead of pkgs, so things like <code>pkgsi686Linux.stdenv.mkDerivation </code> or <code>pkgsi686Linux.callPackage</code> then nix will give you 32bit everything<ref>[https://logs.nix.samueldr.com/nixos/2018-03-19#1521474071-1521474422; clever, #nixos 2018-03-19]</ref> | '''Answer (clever)''': you want to use <code>pkgsi686Linux</code> instead of pkgs, so things like <code>pkgsi686Linux.stdenv.mkDerivation </code> or <code>pkgsi686Linux.callPackage</code> then nix will give you 32bit everything<ref>[https://logs.nix.samueldr.com/nixos/2018-03-19#1521474071-1521474422; clever, #nixos 2018-03-19]</ref> | ||
== Building multilib software == | |||
If a packages wants to compile both 32/64-bit executable, you need a compiler with multilib support. | |||
In nixpkgs provides `multiStdenv.mkDerivation` that should be used instead `stdenv.mkDerivation`. | |||
This is equivalent to using <code>gcc-multilib</code> in debian derivatives. | |||
Revision as of 17:50, 19 March 2018
Building software with 32bit gcc
Question: I'm invoking gcc with -m32 and it fails to find `gnu/stubs-32.h`
Answer (clever): you want to use pkgsi686Linux instead of pkgs, so things like pkgsi686Linux.stdenv.mkDerivation or pkgsi686Linux.callPackage then nix will give you 32bit everything[1]
Building multilib software
If a packages wants to compile both 32/64-bit executable, you need a compiler with multilib support.
In nixpkgs provides `multiStdenv.mkDerivation` that should be used instead `stdenv.mkDerivation`.
This is equivalent to using gcc-multilib in debian derivatives.