Test use of module .def files for MS tools

This adds a "ModuleDefinition" test enabled when using MSVC tools.  It
checks that .def files can be used to export .dll and .exe symbols and
create corresponding .lib files that can be linked.  See issue #9613.

Tests/CMakeLists.txt

@@ -846,6 +846,7 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=CVS -P ${CMake_SOURCE_DIR}/Utilities/Rel
 
   IF(CMAKE_TEST_MSVC)
     ADD_TEST_MACRO(PrecompiledHeader foo)
+    ADD_TEST_MACRO(ModuleDefinition example_exe)
   ENDIF(CMAKE_TEST_MSVC)
 
   IF("${CMAKE_TEST_GENERATOR}" MATCHES "Makefile")

Tests/ModuleDefinition/CMakeLists.txt

+cmake_minimum_required(VERSION 2.6)
+project(ModuleDefinition C)
+
+# Test .def file source recognition for DLLs.
+add_library(example_dll SHARED example_dll.c example_dll.def)
+
+# Test /DEF:<file> flag recognition for VS.
+if(MSVC)
+  add_library(example_dll_2 SHARED example_dll_2.c)
+  set_property(TARGET example_dll_2 PROPERTY LINK_FLAGS
+    /DEF:"${ModuleDefinition_SOURCE_DIR}/example_dll_2.def")
+  set(example_dll_2 example_dll_2)
+endif()
+
+# Test .def file source recognition for EXEs.
+add_executable(example_exe example_exe.c example_exe.def)
+set_property(TARGET example_exe PROPERTY ENABLE_EXPORTS 1)
+target_link_libraries(example_exe example_dll ${example_dll_2})
+
+# Test linking to the executable.
+add_library(example_mod_1 MODULE example_mod_1.c)
+target_link_libraries(example_mod_1 example_exe example_dll ${example_dll_2})

Tests/ModuleDefinition/example_dll.c

+int example_dll_function(void) { return 0; }

Tests/ModuleDefinition/example_dll.def

+EXPORTS
+example_dll_function

Tests/ModuleDefinition/example_dll_2.c

+int example_dll_2_function(void) { return 0; }

Tests/ModuleDefinition/example_dll_2.def

+EXPORTS
+example_dll_2_function

Tests/ModuleDefinition/example_exe.c

+extern int __declspec(dllimport) example_dll_function(void);
+#ifdef _MSC_VER
+extern int __declspec(dllimport) example_dll_2_function(void);
+#endif
+int example_exe_function(void) { return 0; }
+int main(void)
+{
+  return
+    example_dll_function() +
+#ifdef _MSC_VER
+    example_dll_2_function() +
+#endif
+    example_exe_function();
+}

Tests/ModuleDefinition/example_exe.def

+EXPORTS
+example_exe_function

Tests/ModuleDefinition/example_mod_1.c

+#ifdef __WATCOMC__
+# define MODULE_CCONV __cdecl
+#else
+# define MODULE_CCONV
+#endif
+
+int __declspec(dllimport) example_exe_function(void);
+int __declspec(dllimport) example_dll_function(void);
+#ifdef _MSC_VER
+int __declspec(dllimport) example_dll_2_function(void);
+#endif
+
+__declspec(dllexport) int MODULE_CCONV example_mod_1_function(int n)
+{
+  return
+    example_dll_function() +
+#ifdef _MSC_VER
+    example_dll_2_function() +
+#endif
+    example_exe_function() + n;
+}