nixpkgs/pkgs/tools/graphics/optipng/default.nix

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{ stdenv, fetchurl, libpng
, static ? stdenv.hostPlatform.isStatic
}:
# This package comes with its own copy of zlib, libpng and pngxtern
with stdenv.lib;
stdenv.mkDerivation rec {
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name = "optipng-0.7.7";
src = fetchurl {
url = "mirror://sourceforge/optipng/${name}.tar.gz";
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sha256 = "0lj4clb851fzpaq446wgj0sfy922zs5l5misbpwv6w7qrqrz4cjg";
};
buildInputs = [ libpng ];
LDFLAGS = optional static "-static";
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# Workaround for crash in cexcept.h. See
# https://github.com/NixOS/nixpkgs/issues/28106
preConfigure = ''
export LD=$CC
'';
configureFlags = [
"--with-system-zlib"
"--with-system-libpng"
] ++ stdenv.lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
#"-prefix=$out"
];
postInstall = if stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform.isWindows then ''
mv "$out"/bin/optipng{,.exe}
'' else null;
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meta = with stdenv.lib; {
homepage = "http://optipng.sourceforge.net/";
description = "A PNG optimizer";
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license = licenses.zlib;
platforms = platforms.unix;
};
}