nixpkgs/pkgs/development/libraries/fftw/default.nix

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args : with args;
let localDefs = builderDefs.passthru.function {
src =
fetchurl {
url = ftp://ftp.fftw.org/pub/fftw/fftw-3.1.2.tar.gz;
sha256 = "1gr63hf5vvsg50b2xwqaxwpvs1y9g8l0sb91a38wpvr7zsbjxfg1";
};
buildInputs = [];
configureFlags = ["--enable-shared"]
++ (if args.singlePrecision then [ /*"--enable-single" */] else ["--enable-float"]);
# some distros seem to be shipping both versions within the same package?
# why does --enable-single still result in ..3f.so instead of ..3.so?
};
in with localDefs;
stdenv.mkDerivation {
name = "fftw-3.1.2" + ( if args.singlePrecision then "-single" else "-float" );
builder = writeScript "fftw-3.1.2-builder"
(textClosure localDefs [doConfigure doMakeInstall doForceShare]);
meta = {
description = "
Fastest Fourier Transform in the West library.
";
inherit src;
};
}