new test

test/blackbox-tests/test-cases/cxx-flags.t/dune

@@ -7,4 +7,4 @@
  (name main)
  (libraries quad)
  (foreign_stubs (language cxx) (names bazexe))
- (modules main))
+ (modules main))

test/blackbox-tests/test-cases/cxx-flags.t/run.t

@@ -106,8 +106,33 @@ With use_standard_c_and_cxx_flags = true
   > grep -ce "Main.cmx$GCC_LF_LIB)\|Main.cmx$Clang_LF_LIB)\|Main.cmx$Msvc_LF_LIB)"
   1
 
+  $ dune clean
+
   $ dune exec ./main.exe
   2046
   4096
   Hello World Baz!
   Hello World Bazexe!
+
+  $ [ -f _build/default/.dune/ccomp/ccomp ]
+
+
+ccomp is not computed if not required
+=====================================
+  $ dune clean
+
+  $ dune exec ./sub/main_no_stubs.exe
+  OK
+
+  $ [ -f _build/default/.dune/ccomp/ccomp ]
+  [1]
+
+
+one can extend link flags in env
+================================
+
+  $ OTHER=" --other-flag --yet-some-other-flag)"
+
+  $ dune rules sub/main.exe --profile some-profile  | tr -s '\n' ' ' |
+  > grep -ce "Main.cmx$GCC_LF_LIB$OTHER\|Main.cmx$Clang_LF_LIB$OTHER\|Main.cmx$Msvc_LF_LIB$OTHER"
+  1

test/blackbox-tests/test-cases/cxx-flags.t/sub/bazexe.cpp

@@ -0,0 +1,11 @@
+#include <caml/mlvalues.h>
+#include <iostream>
+
+extern "C" value bazexe(value unit) { return Val_int(4096); }
+
+extern "C" void hello_world_bazexe ();
+
+void hello_world_bazexe ()
+{
+  std::cout << "Hello World Bazexe!";
+}

test/blackbox-tests/test-cases/cxx-flags.t/sub/dune

@@ -0,0 +1,12 @@
+
+(executable
+ (name main)
+ (link_flags (:standard --yet-some-other-flag \ --remove-this-one-later))
+ (foreign_stubs (language cxx) (names bazexe))
+ (modules main))
+
+(executable
+ (name main_no_stubs)
+ (modules main_no_stubs))
+
+(env (some-profile (link_flags (:standard --other-flag --remove-this-one-later))))

test/blackbox-tests/test-cases/cxx-flags.t/sub/dune-project

@@ -0,0 +1 @@
+(lang dune 3.0)

test/blackbox-tests/test-cases/cxx-flags.t/sub/main.ml

@@ -0,0 +1 @@
+let () = print_endline "OK"

test/blackbox-tests/test-cases/cxx-flags.t/sub/main_no_stubs.ml

@@ -0,0 +1 @@
+let () = print_endline "OK"