Build: copy libuv headers out to help luv_unix

Closes #150.

Makefile

@@ -232,6 +232,7 @@ release : check-ejected-build clean
 	opam pin add -y --no-action luv _release/$(RELEASE) --kind=path
 	opam reinstall -y --verbose luv
 	cd test/installation && dune exec ./user.exe --root .
+	cd test/headers && dune exec ./headers.exe --root .
 	opam remove -y luv
 	opam pin remove -y luv
 	md5sum $(RELEASE).tar.gz

src/c/dune

@@ -18,7 +18,7 @@ let foreign_archives, uv_library_flag, include_dirs, i_option, install_h =
     "(foreign_archives uv)",
     "",
     "(include_dirs vendor/libuv/include)",
-    "-I vendor/libuv/include",
+    "-I .",
     true
 
 let () = Jbuild_plugin.V1.send @@ {|
@@ -39,25 +39,29 @@ let () = Jbuild_plugin.V1.send @@ {|
 
 |}^ (if not install_h then "" else {|
 
+(rule
+ (deps (glob_files uv/*.h))
+ (action (copy vendor/libuv/include/uv.h uv.h)))
+
 (install
  (section lib)
  (package luv)
  (files
-  (vendor/libuv/include/uv.h as uv.h)
-  (vendor/libuv/include/uv/aix.h as uv/aix.h)
-  (vendor/libuv/include/uv/bsd.h as uv/bsd.h)
-  (vendor/libuv/include/uv/darwin.h as uv/darwin.h)
-  (vendor/libuv/include/uv/errno.h as uv/errno.h)
-  (vendor/libuv/include/uv/linux.h as uv/linux.h)
-  (vendor/libuv/include/uv/os390.h as uv/os390.h)
-  (vendor/libuv/include/uv/posix.h as uv/posix.h)
-  (vendor/libuv/include/uv/stdint-msvc2008.h as uv/stdint-msvc2008.h)
-  (vendor/libuv/include/uv/sunos.h as uv/sunos.h)
-  (vendor/libuv/include/uv/threadpool.h as uv/threadpool.h)
-  (vendor/libuv/include/uv/tree.h as uv/tree.h)
-  (vendor/libuv/include/uv/unix.h as uv/unix.h)
-  (vendor/libuv/include/uv/version.h as uv/version.h)
-  (vendor/libuv/include/uv/win.h as uv/win.h)))
+  (uv.h as uv.h)
+  (uv/aix.h as uv/aix.h)
+  (uv/bsd.h as uv/bsd.h)
+  (uv/darwin.h as uv/darwin.h)
+  (uv/errno.h as uv/errno.h)
+  (uv/linux.h as uv/linux.h)
+  (uv/os390.h as uv/os390.h)
+  (uv/posix.h as uv/posix.h)
+  (uv/stdint-msvc2008.h as uv/stdint-msvc2008.h)
+  (uv/sunos.h as uv/sunos.h)
+  (uv/threadpool.h as uv/threadpool.h)
+  (uv/tree.h as uv/tree.h)
+  (uv/unix.h as uv/unix.h)
+  (uv/version.h as uv/version.h)
+  (uv/win.h as uv/win.h)))
 
 |}) ^{|
 

src/c/uv/dune

@@ -0,0 +1,14 @@
+(rule (copy ../vendor/libuv/include/uv/aix.h aix.h))
+(rule (copy ../vendor/libuv/include/uv/bsd.h bsd.h))
+(rule (copy ../vendor/libuv/include/uv/darwin.h darwin.h))
+(rule (copy ../vendor/libuv/include/uv/errno.h errno.h))
+(rule (copy ../vendor/libuv/include/uv/linux.h linux.h))
+(rule (copy ../vendor/libuv/include/uv/os390.h os390.h))
+(rule (copy ../vendor/libuv/include/uv/posix.h posix.h))
+(rule (copy ../vendor/libuv/include/uv/stdint-msvc2008.h stdint-msvc2008.h))
+(rule (copy ../vendor/libuv/include/uv/sunos.h sunos.h))
+(rule (copy ../vendor/libuv/include/uv/threadpool.h threadpool.h))
+(rule (copy ../vendor/libuv/include/uv/tree.h tree.h))
+(rule (copy ../vendor/libuv/include/uv/unix.h unix.h))
+(rule (copy ../vendor/libuv/include/uv/version.h version.h))
+(rule (copy ../vendor/libuv/include/uv/win.h win.h))

test/headers/headers.c

@@ -1,5 +1,5 @@
-#include <caml/mlvalues.h>
 #include <uv.h>
+#include <caml/mlvalues.h>
 
 CAMLprim value retrieve_constant(value unit)
 {