pkg(ocaml-4.12.0): Add ocaml 4.12.0 (#200)

packages/ocaml/4.12.0/build.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+PREFIX=$(realpath $(dirname $0))
+
+mkdir -p build
+cd build
+
+curl -L "https://github.com/ocaml/ocaml/archive/4.12.0.tar.gz" -o ocaml.tar.gz
+tar xzf ocaml.tar.gz --strip-components=1
+rm ocaml.tar.gz
+
+./configure --prefix="$PREFIX"
+make -j$(nproc)
+make install -j$(nproc)
+
+cd ..
+rm -rf build

packages/ocaml/4.12.0/compile

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+ocamlc -o out "$@"

packages/ocaml/4.12.0/environment

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+export PATH=$PWD/bin:$PATH

packages/ocaml/4.12.0/metadata.json

@@ -0,0 +1,5 @@
+{
+  "language": "ocaml",
+  "version": "4.12.0",
+  "aliases": ["ocaml", "ml"]
+}

packages/ocaml/4.12.0/run

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+shift
+./out "$@"

packages/ocaml/4.12.0/test.ml

@@ -0,0 +1 @@
+print_string "OK\n";