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nixpkgs/pkgs/build-support/alternatives/lapack/default.nix
2021-01-24 01:49:49 +01:00

108 lines
3.6 KiB
Nix

{ lib, stdenv
, lapack-reference, openblasCompat, openblas
, isILP64 ? false
, lapackProvider ? if isILP64 then openblas else openblasCompat }:
let
version = "3";
canonicalExtension = if stdenv.hostPlatform.isLinux
then "${stdenv.hostPlatform.extensions.sharedLibrary}.${version}"
else stdenv.hostPlatform.extensions.sharedLibrary;
lapackImplementation = lib.getName lapackProvider;
in
assert isILP64 -> (lapackImplementation == "openblas" && lapackProvider.blas64) || lapackImplementation == "mkl";
stdenv.mkDerivation {
pname = "lapack";
inherit version;
outputs = [ "out" "dev" ];
meta = (lapackProvider.meta or {}) // {
description = "${lib.getName lapackProvider} with just the LAPACK C and FORTRAN ABI";
};
passthru = {
inherit isILP64;
provider = lapackProvider;
implementation = lapackImplementation;
};
dontBuild = true;
dontConfigure = true;
unpackPhase = "src=$PWD";
dontPatchELF = true;
installPhase = (''
mkdir -p $out/lib $dev/include $dev/lib/pkgconfig
liblapack="${lib.getLib lapackProvider}/lib/liblapack${canonicalExtension}"
if ! [ -e "$liblapack" ]; then
echo "$liblapack does not exist, ${lapackProvider.name} does not provide liblapack."
exit 1
fi
cp -L "$liblapack" $out/lib/liblapack${canonicalExtension}
chmod +w $out/lib/liblapack${canonicalExtension}
'' + (if stdenv.hostPlatform.parsed.kernel.execFormat.name == "elf" then ''
patchelf --set-soname liblapack${canonicalExtension} $out/lib/liblapack${canonicalExtension}
patchelf --set-rpath "$(patchelf --print-rpath $out/lib/liblapack${canonicalExtension}):${lapackProvider}/lib" $out/lib/liblapack${canonicalExtension}
'' else "") + ''
if [ "$out/lib/liblapack${canonicalExtension}" != "$out/lib/liblapack${stdenv.hostPlatform.extensions.sharedLibrary}" ]; then
ln -s $out/lib/liblapack${canonicalExtension} "$out/lib/liblapack${stdenv.hostPlatform.extensions.sharedLibrary}"
fi
install -D ${lib.getDev lapack-reference}/include/lapack.h $dev/include/lapack.h
cat <<EOF > $dev/lib/pkgconfig/lapack.pc
Name: lapack
Version: ${version}
Description: LAPACK FORTRAN implementation
Cflags: -I$dev/include
Libs: -L$out/lib -llapack
EOF
liblapacke="${lib.getLib lapackProvider}/lib/liblapacke${canonicalExtension}"
if ! [ -e "$liblapacke" ]; then
echo "$liblapacke does not exist, ${lapackProvider.name} does not provide liblapacke."
exit 1
fi
cp -L "$liblapacke" $out/lib/liblapacke${canonicalExtension}
chmod +w $out/lib/liblapacke${canonicalExtension}
'' + (if stdenv.hostPlatform.parsed.kernel.execFormat.name == "elf" then ''
patchelf --set-soname liblapacke${canonicalExtension} $out/lib/liblapacke${canonicalExtension}
patchelf --set-rpath "$(patchelf --print-rpath $out/lib/liblapacke${canonicalExtension}):${lib.getLib lapackProvider}/lib" $out/lib/liblapacke${canonicalExtension}
'' else "") + ''
if [ -f "$out/lib/liblapacke.so.3" ]; then
ln -s $out/lib/liblapacke.so.3 $out/lib/liblapacke.so
fi
cp ${lib.getDev lapack-reference}/include/lapacke{,_mangling,_config}.h $dev/include
cat <<EOF > $dev/lib/pkgconfig/lapacke.pc
Name: lapacke
Version: ${version}
Description: LAPACK C implementation
Cflags: -I$dev/include
Libs: -L$out/lib -llapacke
EOF
'' + lib.optionalString (lapackImplementation == "mkl") ''
mkdir -p $out/nix-support
echo 'export MKL_INTERFACE_LAYER=${lib.optionalString isILP64 "I"}LP64,GNU' > $out/nix-support/setup-hook
ln -s $out/lib/liblapack${canonicalExtension} $out/lib/libmkl_rt${stdenv.hostPlatform.extensions.sharedLibrary}
ln -sf ${lapackProvider}/include/* $dev/include
'');
}