use a file test

Signed-off-by: Etienne Millon <[email protected]>

test/blackbox-tests/test-cases/mdx-stanza/shared-libraries.t

@@ -0,0 +1,43 @@
+mdx supports dependencies referencing shared libraries.
+
+See #10582.
+
+  $ cat > dune-project << EOF
+  > (lang dune 3.15)
+  > (name dune_mdx_test)
+  > (using mdx 0.4)
+  > EOF
+
+  $ cat > dune << EOF
+  > (library
+  >  (name public_lib)
+  >  (foreign_archives test))
+  > 
+  > (rule
+  >  (deps test.c)
+  >  (targets libtest.a dlltest.so)
+  >  (action
+  >   (progn
+  >    (run gcc -c -fPIC test.c -o test.o)
+  >    (run gcc test.o -shared -o dlltest.so)
+  >    (run ar rcs libtest.a test.o))))
+  > 
+  > (mdx
+  >  (libraries public_lib))
+  > EOF
+
+  $ cat > public_lib.mli << EOF
+  > val foo : int -> int
+  > EOF
+
+  $ cat > public_lib.ml << EOF
+  > let foo bar = bar + 1
+  > EOF
+
+  $ cat > test.c << EOF
+  > int add(int a, int b) {
+  >     return a + b;
+  > }
+  > EOF
+
+  $ dune runtest