supported SPIRV-Cross of VulkanSDK

CMakeLists.txt

@@ -3,23 +3,33 @@ SET(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)
 
 project(GLSLCompiler)
 
-if(MSVC)
-    SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MTd")
-    SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd")
-
-    SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MT")
-    SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT")
-    add_definitions(-D_CRT_SECURE_NO_WARNINGS)
-endif()
-
 include("system_bit.cmake")
 include("output_path.cmake")
 
-add_subdirectory(SPIRV-Cross)
-add_subdirectory(SPIRV-Cross/external/glslang)
-add_subdirectory(SPIRV-Cross/external/spirv-tools)
+option(USE_PRIVATE_SPIRV_CROSS  "Use private SPIRV-Cross" OFF)
 
-include_directories(SPIRV-Cross/external)
+IF(USE_PRIVATE_SPIRV_CROSS)
+
+    include("FindVulkan.cmake")
+    include_directories(${Vulkan_INCLUDE_DIRS})
+    link_directories(${Vulkan_LIBRARIES_DIR})
+    
+ELSE()
+    if(MSVC)
+        SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MTd")
+        SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd")
+
+        SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MT")
+        SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT")
+        add_definitions(-D_CRT_SECURE_NO_WARNINGS)
+    endif()
+
+    add_subdirectory(SPIRV-Cross)
+    add_subdirectory(SPIRV-Cross/external/glslang)
+    add_subdirectory(SPIRV-Cross/external/spirv-tools)
+
+    include_directories(SPIRV-Cross/external)
+ENDIF()
 
 set(VULKAN_SPIRV_LIBS   GenericCodeGen
                         glslang