3b6c07c398
The new HEaP analytic placer for NextPNR uses Eigen for underlying placement algorithms. Enabling -DUSE_OPENMP passes -fopenmp onto the compiler, which Eigen picks up automatically with no extra work. This should result in placer speedups for large designs, e.g. on ECP5 85k chips. Signed-off-by: Austin Seipp <aseipp@pobox.com>
76 lines
2.4 KiB
Nix
76 lines
2.4 KiB
Nix
{ stdenv, fetchFromGitHub, cmake, makeWrapper
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, boost, python3, eigen
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, icestorm, trellis
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# TODO(thoughtpolice) Currently the GUI build seems broken at runtime on my
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# laptop (and over a remote X server on my server...), so mark it broken for
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# now, with intent to fix later.
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, enableGui ? false
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, qtbase
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}:
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let
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boostPython = boost.override { python = python3; enablePython = true; };
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# This is a massive hack. For now, Trellis doesn't really support
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# installation through an already-built package; you have to build it once to
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# get the tools, then reuse the build directory to build nextpnr -- the
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# 'install' phase doesn't install everything it needs. This will be fixed in
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# the future but for now we can do this horrific thing.
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trellisRoot = trellis.overrideAttrs (_: {
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installPhase = ''
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mkdir -p $out
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cp *.so ..
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cd ../../.. && cp -R trellis database $out/
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'';
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});
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in
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stdenv.mkDerivation rec {
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name = "nextpnr-${version}";
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version = "2019.04.02";
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src = fetchFromGitHub {
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owner = "yosyshq";
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repo = "nextpnr";
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rev = "6adf37e3c1d4301e087d89c9e9c37563fe8d78df";
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sha256 = "0qqb2yd2s39hahh5qigvllgyzj7rp3r1k9jp2n9z2jrfpiaz68c6";
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};
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nativeBuildInputs = [ cmake makeWrapper ];
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buildInputs
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= [ boostPython python3 eigen ]
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++ (stdenv.lib.optional enableGui qtbase);
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enableParallelBuilding = true;
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cmakeFlags =
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[ "-DARCH=generic;ice40;ecp5"
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"-DICEBOX_ROOT=${icestorm}/share/icebox"
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"-DTRELLIS_ROOT=${trellisRoot}/trellis"
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"-DUSE_OPENMP=ON"
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] ++ (stdenv.lib.optional (!enableGui) "-DBUILD_GUI=OFF");
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# Fix the version number. This is a bit stupid (and fragile) in practice
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# but works ok. We should probably make this overrideable upstream.
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patchPhase = with builtins; ''
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substituteInPlace ./CMakeLists.txt \
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--replace 'git log -1 --format=%h' 'echo ${substring 0 11 src.rev}'
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'';
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postInstall = stdenv.lib.optionalString enableGui ''
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for x in generic ice40 ecp5; do
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wrapProgram $out/bin/nextpnr-$x \
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--prefix QT_PLUGIN_PATH : "${qtbase}/${qtbase.qtPluginPrefix}"
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done
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'';
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meta = with stdenv.lib; {
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description = "Place and route tool for FPGAs";
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homepage = https://github.com/yosyshq/nextpnr;
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license = licenses.isc;
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platforms = platforms.linux;
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maintainers = with maintainers; [ thoughtpolice ];
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broken = enableGui;
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};
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}
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