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55ac8ffa43
The opam patch makes ocaml link dependent executables with
-L${LLVM_OCAML_EXTERNAL_LLVM_LIBDIR}. This variable was previously
undefined and as a result the linker would previously be called with
just -L which makes it ignore the next argument. This would lead strange
linking errors, like missing caml_apply2.
Despite defining this variable correctly, propagating llvm is still
necessary for linking to complete. In case ocaml-llvm is a transitive
dependency only, propagatedBuildInputs is not enough. To avoid having to
guess which version of llvm was used, we provide the right one in
passthrough.
47 lines
1.2 KiB
Nix
47 lines
1.2 KiB
Nix
{ stdenv, fetchpatch, python, cmake, llvm, ocaml, findlib, ctypes }:
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let version = stdenv.lib.getVersion llvm; in
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stdenv.mkDerivation {
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pname = "ocaml-llvm";
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inherit version;
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inherit (llvm) src;
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buildInputs = [ python cmake ocaml findlib ctypes ];
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propagatedBuildInputs = [ llvm ];
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patches = [ (fetchpatch {
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url = https://raw.githubusercontent.com/ocaml/opam-repository/2bdc193f5a9305ea93bf0f0dfc1fbc327c8b9306/packages/llvm/llvm.7.0.0/files/fix-shared.patch;
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sha256 = "1p98j3b1vrryfn1xa7i50m6mmm4dyw5ldafq6kyh9sfmdihz4zsx";
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})];
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cmakeFlags = [
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"-DLLVM_OCAML_OUT_OF_TREE=TRUE"
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"-DLLVM_OCAML_INSTALL_PATH=${placeholder "out"}/ocaml"
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"-DLLVM_OCAML_EXTERNAL_LLVM_LIBDIR=${stdenv.lib.getLib llvm}/lib"
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];
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buildFlags = "ocaml_all";
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installFlags = "-C bindings/ocaml";
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postInstall = ''
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mkdir -p $OCAMLFIND_DESTDIR/
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mv $out/ocaml $OCAMLFIND_DESTDIR/llvm
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mv $OCAMLFIND_DESTDIR/llvm/META{.llvm,}
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'';
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passthru = {
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inherit llvm;
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};
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meta = {
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inherit (llvm.meta) license homepage;
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platforms = ocaml.meta.platforms or [];
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description = "OCaml bindings distributed with LLVM";
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maintainers = with stdenv.lib.maintainers; [ vbgl ];
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};
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}
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