nixpkgs/pkgs/development/ocaml-modules/llvm/default.nix
Symphorien Gibol 55ac8ffa43 ocamlPackages.llvm: propagate needed libs, fix missing build parameter
The opam patch makes ocaml link dependent executables with
-L${LLVM_OCAML_EXTERNAL_LLVM_LIBDIR}. This variable was previously
undefined and as a result the linker would previously be called with
just -L which makes it ignore the next argument. This would lead strange
linking errors, like missing caml_apply2.

Despite defining this variable correctly, propagating llvm is still
necessary for linking to complete. In case ocaml-llvm is a transitive
dependency only, propagatedBuildInputs is not enough. To avoid having to
guess which version of llvm was used, we provide the right one in
passthrough.
2019-10-11 08:19:51 +02:00

47 lines
1.2 KiB
Nix

{ stdenv, fetchpatch, python, cmake, llvm, ocaml, findlib, ctypes }:
let version = stdenv.lib.getVersion llvm; in
stdenv.mkDerivation {
pname = "ocaml-llvm";
inherit version;
inherit (llvm) src;
buildInputs = [ python cmake ocaml findlib ctypes ];
propagatedBuildInputs = [ llvm ];
patches = [ (fetchpatch {
url = https://raw.githubusercontent.com/ocaml/opam-repository/2bdc193f5a9305ea93bf0f0dfc1fbc327c8b9306/packages/llvm/llvm.7.0.0/files/fix-shared.patch;
sha256 = "1p98j3b1vrryfn1xa7i50m6mmm4dyw5ldafq6kyh9sfmdihz4zsx";
})];
cmakeFlags = [
"-DLLVM_OCAML_OUT_OF_TREE=TRUE"
"-DLLVM_OCAML_INSTALL_PATH=${placeholder "out"}/ocaml"
"-DLLVM_OCAML_EXTERNAL_LLVM_LIBDIR=${stdenv.lib.getLib llvm}/lib"
];
buildFlags = "ocaml_all";
installFlags = "-C bindings/ocaml";
postInstall = ''
mkdir -p $OCAMLFIND_DESTDIR/
mv $out/ocaml $OCAMLFIND_DESTDIR/llvm
mv $OCAMLFIND_DESTDIR/llvm/META{.llvm,}
'';
passthru = {
inherit llvm;
};
meta = {
inherit (llvm.meta) license homepage;
platforms = ocaml.meta.platforms or [];
description = "OCaml bindings distributed with LLVM";
maintainers = with stdenv.lib.maintainers; [ vbgl ];
};
}