nixpkgs/pkgs/development/ocaml-modules/llvm/default.nix
Andrew Childs 7869d16545 llvmPackages: Multuple outputs for everythting
Also begin to start work on cross compilation, though that will have to
be finished later.

The patches are based on the first version of
https://reviews.llvm.org/D99484. It's very annoying to do the
back-porting but the review has uncovered nothing super major so I'm
fine sticking with what I've got.

Beyond making the outputs work, I also strove to re-sync the packages,
as they have been drifting pointlessly apart for some time.

----

Other misc notes, highly incomplete

- lvm-config-native and llvm-config are put in `dev` because they are
  tools just for build time.

- Clang no longer has an lld dep. That was introduced in
  db29857eb391ed002046090851a44c452b80bdbd, but if clang needs help
  finding lld when it is used we should just pass it flags / put in the
  resource dir. Providing it at build time increases critical path
  length for no good reason.

----

A note on `nativeCC`:

`stdenv` takes tools from the previous stage, so:

1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.stdenv.cc`: `(?0, ?1, x)`

while:

1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.targetPackages`: `(x, x, ?2)`
3. `pkgsBuildBuild.targetPackages.stdenv.cc`: `(?1, x, x)`
2021-04-30 05:41:00 +00:00

48 lines
1.2 KiB
Nix

{ stdenv, lib, fetchpatch, python, cmake, libllvm, ocaml, findlib, ctypes }:
let version = lib.getVersion libllvm; in
stdenv.mkDerivation {
pname = "ocaml-llvm";
inherit version;
inherit (libllvm) src;
nativeBuildInputs = [ cmake ];
buildInputs = [ python ocaml findlib ctypes ];
propagatedBuildInputs = [ libllvm ];
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=${placeholder "out"}/ocaml"
"-DLLVM_OCAML_EXTERNAL_LLVM_LIBDIR=${lib.getLib libllvm}/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 libllvm;
};
meta = {
inherit (libllvm.meta) license homepage;
platforms = ocaml.meta.platforms or [];
description = "OCaml bindings distributed with LLVM";
maintainers = with lib.maintainers; [ vbgl ];
};
}