commit ea1e853d0bdc57391c112206cf4a9884bdddb918
Author: Matthieu Dubuget <matthieu.dubuget@gmail.com>
Date:   Sat Apr 13 13:47:57 2019 +0200

    Commit initial

diff --git a/Makefile b/Makefile
new file mode 100755
index 0000000..ff030e2
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,18 @@
+.PHONY: clean
+
+all: tst.dll
+	cp tst_stub/mytst.h test
+	cp _build/default/dll/tst.dll test
+	cd test && i686-w64-mingw32-gcc -o test.exe tst.dll test.c
+
+clean:
+	dune clean
+	cd test && rm mytst.h test.exe tst.dll
+
+tst.dll:
+	dune build
+
+test: all
+	cd test && ./test.exe
+
+
diff --git a/dll/dune b/dll/dune
new file mode 100755
index 0000000..b9f5815
--- /dev/null
+++ b/dll/dune
@@ -0,0 +1,13 @@
+(executable
+  (name tst)
+  (libraries tst_stub)
+  (modes shared_object))
+
+(alias
+  (name install)
+  (deps tst%{ext_dll}))
+
+(rule
+  (targets tst.ml)
+  (action
+  (write-file %{targets} "")))
\ No newline at end of file
diff --git a/dune-project b/dune-project
new file mode 100755
index 0000000..1b19a0b
--- /dev/null
+++ b/dune-project
@@ -0,0 +1 @@
+(lang dune 1.9)
diff --git a/test/test.c b/test/test.c
new file mode 100755
index 0000000..47c55da
--- /dev/null
+++ b/test/test.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "mytst.h"
+
+int main(){
+  int before, after;
+
+  before = tst_init_ok();
+  printf("Avant: %d\n", before);
+  fflush(stdout);
+
+  tst_init();
+
+  after = tst_init_ok();
+  printf("Après: %d\n", after);
+  fflush(stdout);
+
+  return EXIT_SUCCESS;
+
+}
diff --git a/tst_stub/dune b/tst_stub/dune
new file mode 100755
index 0000000..999f69d
--- /dev/null
+++ b/tst_stub/dune
@@ -0,0 +1,4 @@
+(library
+(name tst_stub)
+(c_names mytst_stub)
+(library_flags :standard -linkall))
\ No newline at end of file
diff --git a/tst_stub/mytst.h b/tst_stub/mytst.h
new file mode 100755
index 0000000..57b4878
--- /dev/null
+++ b/tst_stub/mytst.h
@@ -0,0 +1,3 @@
+void tst_init();
+int tst_init_ok();
+/* int tst_sum(int a, int b); */
diff --git a/tst_stub/mytst_stub.c b/tst_stub/mytst_stub.c
new file mode 100755
index 0000000..1e9cd27
--- /dev/null
+++ b/tst_stub/mytst_stub.c
@@ -0,0 +1,87 @@
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include <assert.h>
+#include <caml/mlvalues.h>
+#include <caml/alloc.h>
+#include <caml/memory.h>
+#include <caml/callback.h>
+
+#include "mytst.h"
+
+
+#ifdef WIN32
+#define TST_DLL_EXPORT __declspec(dllexport)
+#else
+#define TST_DLL_EXPORT
+#endif
+
+value dummy(value u){
+  CAMLparam1(u);
+  CAMLreturn(Val_unit);
+}
+
+static int tst_init_done = 0;
+
+TST_DLL_EXPORT void
+tst_init (void)
+{
+  char_os *vide[1];
+
+  vide[0] = NULL;
+
+  if (!tst_init_done)
+    {
+      caml_startup_exn (vide);
+      tst_init_done = 1;
+    }
+}
+
+TST_DLL_EXPORT int tst_init_ok (void)
+{
+  return tst_init_done;
+}
+
+/* TST_DLL_EXPORT int tst_sum(int a, int b){ */
+/*   CAMLparam0 (); */
+/*   static value *cbk = NULL; */
+/*   if (cbk == NULL) */
+/*     cbk = caml_named_value("additionner"); */
+/*   assert(cbk); */
+/*   CAMLlocal1(res); */
+/*   res = caml_callback2(*cbk, Val_int(a), Val_int(b)); */
+/*   CAMLreturnT(int, Int_val(res)); */
+/* } */
+
+#ifdef WIN32
+BOOL WINAPI DllMain(
+                    HINSTANCE hinstDLL,  // handle to DLL module
+                    DWORD fdwReason,     // reason for calling function
+                    LPVOID lpReserved )  // reserved
+{
+
+  // Perform actions based on the reason for calling.
+  switch( fdwReason )
+    {
+    case DLL_PROCESS_ATTACH:
+      // Initialize once for each new process.
+      // Return FALSE to fail DLL load.
+      /* ms_miniscan_init();   */
+      break;
+
+    case DLL_THREAD_ATTACH:
+      // Do thread-specific initialization.
+      break;
+
+    case DLL_THREAD_DETACH:
+      // Do thread-specific cleanup.
+      break;
+
+    case DLL_PROCESS_DETACH:
+      // Perform any necessary cleanup.
+      break;
+    }
+  return TRUE;
+}
+#endif