77 lines
2.4 KiB
Nix
77 lines
2.4 KiB
Nix
{ lib
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, gccStdenv
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, fetchFromGitHub
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, cmake
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, simdExtensions ? null
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}:
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with rec {
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# SIMD instruction sets to compile for. If none are specified by the user,
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# an appropriate one is selected based on the detected host system
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isas = with gccStdenv.hostPlatform;
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if simdExtensions != null then lib.toList simdExtensions
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else if avx2Support then [ "AVX2" ]
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else if sse4_1Support then [ "SSE41" ]
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else if isx86_64 then [ "SSE2" ]
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else if isAarch64 then [ "NEON" ]
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else [ "NONE" ];
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archFlags = lib.optionals gccStdenv.hostPlatform.isAarch64 [ "-DARCH=aarch64" ];
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# CMake Build flags for the selected ISAs. For a list of flags, see
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# https://github.com/ARM-software/astc-encoder/blob/main/Docs/Building.md
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isaFlags = map ( isa: "-DISA_${isa}=ON" ) isas;
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# The suffix of the binary to link as 'astcenc'
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mainBinary = builtins.replaceStrings
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[ "AVX2" "SSE41" "SSE2" "NEON" "NONE" ]
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[ "avx2" "sse4.1" "sse2" "neon" "none" ]
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( builtins.head isas );
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};
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gccStdenv.mkDerivation rec {
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pname = "astc-encoder";
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version = "3.4";
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src = fetchFromGitHub {
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owner = "ARM-software";
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repo = "astc-encoder";
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rev = version;
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sha256 = "sha256-blOfc/H64UErjPjkdZQNp2H/Hw57RbQRFBcUo/C2b0Q=";
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};
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nativeBuildInputs = [ cmake ];
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cmakeFlags = isaFlags ++ archFlags ++ [
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"-DCMAKE_BUILD_TYPE=Release"
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];
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# Set a fixed build year to display within help output (otherwise, it would be 1980)
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postPatch = ''
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substituteInPlace Source/cmake_core.cmake \
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--replace 'string(TIMESTAMP astcencoder_YEAR "%Y")' 'set(astcencoder_YEAR "2022")'
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'';
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# Link binaries into environment and provide 'astcenc' link
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postInstall = ''
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mv $out/astcenc $out/bin
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ln -s $out/bin/astcenc-${mainBinary} $out/bin/astcenc
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'';
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meta = with lib; {
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homepage = "https://github.com/ARM-software/astc-encoder";
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description = "An encoder for the ASTC texture compression format";
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longDescription = ''
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The Adaptive Scalable Texture Compression (ASTC) format is
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widely supported by mobile and desktop graphics hardware and
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provides better quality at a given bitrate compared to ETC2.
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This program supports both compression and decompression in LDR
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and HDR mode and can read various image formats. Run `astcenc
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-help` to see all the options.
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'';
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platforms = platforms.unix;
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license = licenses.asl20;
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maintainers = with maintainers; [ dasisdormax ];
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};
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}
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