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

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{ fetchurl, stdenv, builderDefs, precision ? "double" }:
assert stdenv.lib.elem precision [ "single" "double" "long-double" "quad-precision" ];
with { inherit (stdenv.lib) optional; };
let
version = "3.3.3";
localDefs = builderDefs.passthru.function {
src =
fetchurl {
url = "ftp://ftp.fftw.org/pub/fftw/fftw-${version}.tar.gz";
sha256 = "1wwp9b2va7vkq3ay7a9jk22nr4x5q6m37rzqy2j8y3d11c5grkc5";
};
buildInputs = [];
configureFlags = [
"--enable-shared" "--disable-static"
"--enable-threads" "--enable-openmp" # very small wrappers
]
++ optional (precision != "double") "--enable-${precision}"
# all x86_64 have sse2
++ optional stdenv.isx86_64 "--enable-sse2";
};
in with localDefs;
stdenv.mkDerivation rec {
name = "fftw-${precision}-${version}";
builder = writeScript "${name}-builder"
(textClosure localDefs [doConfigure doMakeInstall doForceShare]);
meta = {
description = "Fastest Fourier Transform in the West library";
};
passthru = {
# Allow instantiating "-A fftw.src"
inherit src;
};
}