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{ stdenv, fetchurl, zlib, apngSupport ? true }:
assert zlib != null;
let
version = "1.6.34";
patchVersion = "1.6.34";
sha256 = "1xjr0v34fyjgnhvaa1zixcpx5yvxcg4zwvfh0fyklfyfj86rc7ig";
patch_src = fetchurl {
url = "mirror://sourceforge/libpng-apng/libpng-${patchVersion}-apng.patch.gz";
sha256 = "1ha4npf9mfrzp0srg8a5amks5ww84xzfpjbsj8k3yjjpai798qg6";
};
whenPatched = stdenv.lib.optionalString apngSupport;
in stdenv.mkDerivation rec {
name = "libpng" + whenPatched "-apng" + "-${version}";
src = fetchurl {
url = "mirror://sourceforge/libpng/libpng-${version}.tar.xz";
inherit sha256;
};
postPatch = whenPatched "gunzip < ${patch_src} | patch -Np1";
outputs = [ "out" "dev" "man" ];
outputBin = "dev";
propagatedBuildInputs = [ zlib ];
# it's hard to cross-run tests and some check programs didn't compile anyway
makeFlags = stdenv.lib.optional (!doCheck) "check_PROGRAMS=";
doCheck = true; # not cross;
passthru = { inherit zlib; };
meta = with stdenv.lib; {
description = "The official reference implementation for the PNG file format" + whenPatched " with animation patch";
homepage = http://www.libpng.org/pub/png/libpng.html;
license = licenses.libpng;
platforms = platforms.all;
maintainers = [ maintainers.vcunat maintainers.fuuzetsu ];
};
}
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