From d814c50505c0583bc2b80e6af2f62fe02cb24971 Mon Sep 17 00:00:00 2001
From: Eric Merritt <eric@afiniate.com>
Date: Thu, 21 May 2015 11:03:57 -0500
Subject: add an ocaml specific builder to the system

---
 pkgs/build-support/ocaml/default.nix | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 pkgs/build-support/ocaml/default.nix

(limited to 'pkgs/build-support/ocaml')

diff --git a/pkgs/build-support/ocaml/default.nix b/pkgs/build-support/ocaml/default.nix
new file mode 100644
index 00000000000..87bfa6cea12
--- /dev/null
+++ b/pkgs/build-support/ocaml/default.nix
@@ -0,0 +1,36 @@
+{ stdenv, writeText, ocaml, findlib, camlp4 }:
+
+{ name, version, buildInputs ? [],
+  createFindlibDestdir ?  true,
+  dontStrip ? true,
+  minimumSupportedOcamlVersion ? null,
+  hasSharedObjects ? false,
+  setupHook ? null,
+  meta ? {}, ...
+}@args:
+let
+  ocaml_version = (builtins.parseDrvName ocaml.name).version;
+  defaultMeta = {
+    platforms = ocaml.meta.platforms;
+  };
+in
+  assert minimumSupportedOcamlVersion != null ->
+          stdenv.lib.versionOlder minimumSupportedOcamlVersion ocaml_version;
+
+stdenv.mkDerivation (args // {
+  name = "ocaml-${name}-${version}";
+
+  buildInputs = [ ocaml findlib camlp4 ] ++ buildInputs;
+
+  setupHook = if setupHook == null && hasSharedObjects
+  then writeText "setupHook.sh" ''
+    export CAML_LD_LIBRARY_PATH="''${CAML_LD_LIBRARY_PATH}''${CAML_LD_LIBRARY_PATH:+:}''$1/lib/ocaml/${ocaml_version}/site-lib/${name}/"
+    ''
+  else setupHook;
+
+  inherit ocaml_version;
+  inherit createFindlibDestdir;
+  inherit dontStrip;
+
+  meta = defaultMeta // meta;
+})
-- 
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