nixpkgs/pkgs/tools/graphics/barcode
Sergei Trofimovich 03bfd9f53e barcode: pull upstream fix for -fno-common toolchains
Without the change build fails as:

    $ nix build --impure --expr 'with import ./.{}; barcode.override { stdenv = clang12Stdenv; }' -L
    ...
    barcode> ld: barcode.h:126: multiple definition of `streaming';
      main.o:/build/barcode-0.99/./barcode.h:126: first defined here
2022-01-16 17:57:24 +00:00
..
default.nix