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{ stdenv, fetchurl, gfortran, perl, which, config, coreutils
# Most packages depending on openblas expect integer width to match pointer width,
# but some expect to use 32-bit integers always (for compatibility with reference BLAS).
, blas64 ? null
}:
with stdenv.lib;
let blas64_ = blas64; in
let local = config.openblas.preferLocalBuild or false;
binary =
{ i686-linux = "32";
x86_64-linux = "64";
x86_64-darwin = "64";
}."${stdenv.system}" or (throw "unsupported system: ${stdenv.system}");
genericFlags =
[ "DYNAMIC_ARCH=1"
"NUM_THREADS=64"
];
localFlags = config.openblas.flags or
optionals (hasAttr "target" config.openblas) [ "TARGET=${config.openblas.target}" ];
blas64 = if blas64_ != null then blas64_ else hasPrefix "x86_64" stdenv.system;
version = "0.2.19";
in
stdenv.mkDerivation {
name = "openblas-${version}";
src = fetchurl {
url = "https://github.com/xianyi/OpenBLAS/archive/v${version}.tar.gz";
sha256 = "0mw5ra1vjsqiba79zdhqfkqq6v3bla5a5c0wj7vca9qgjzjbah4w";
name = "openblas-${version}.tar.gz";
};
inherit blas64;
# Some hardening features are disabled due to sporadic failures in
# OpenBLAS-based programs. The problem may not be with OpenBLAS itself, but
# with how these flags interact with hardening measures used downstream.
# In either case, OpenBLAS must only be used by trusted code--it is
# inherently unsuitable for security-conscious applications--so there should
# be no objection to disabling these hardening measures.
hardeningDisable = [
# don't modify or move the stack
"stackprotector" "pic"
# don't alter index arithmetic
"strictoverflow"
# don't interfere with dynamic target detection.
"relro" "bindnow"
];
nativeBuildInputs = optionals stdenv.isDarwin [coreutils] ++ [gfortran perl which];
makeFlags =
(if local then localFlags else genericFlags)
++
optionals stdenv.isDarwin ["MACOSX_DEPLOYMENT_TARGET=10.7"]
++
[
"FC=gfortran"
# Note that clang is available through the stdenv on OSX and
# thus is not an explicit dependency.
"CC=${if stdenv.isDarwin then "clang" else "gcc"}"
''PREFIX="''$(out)"''
"BINARY=${binary}"
"USE_OPENMP=${if stdenv.isDarwin then "0" else "1"}"
"INTERFACE64=${if blas64 then "1" else "0"}"
];
doCheck = true;
checkTarget = "tests";
meta = with stdenv.lib; {
description = "Basic Linear Algebra Subprograms";
license = licenses.bsd3;
homepage = "https://github.com/xianyi/OpenBLAS";
platforms = platforms.unix;
maintainers = with maintainers; [ ttuegel ];
};
}
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