Add OGRE_ADDRESS_SANITIZER_ASAN option (#235)

CMakeLists.txt

@@ -451,6 +451,8 @@ if( APPLE )
 endif()
 option(OGRE_BUILD_PLUGIN_PFX "Build ParticleFX plugin" TRUE)
 
+option( OGRE_ADDRESS_SANITIZER_ASAN "Build with Asan (Address Sanitizer)" OFF )
+
 cmake_dependent_option(OGRE_BUILD_COMPONENT_HLMS_PBS
 "PBS Stands for Physically Based Shading and it's the default material for most entities and meshes. This is the 'desktop' version for OpenGL 3.3+ and D3D11." TRUE "" FALSE)
 cmake_dependent_option(OGRE_BUILD_COMPONENT_HLMS_UNLIT
@@ -572,8 +574,26 @@ if( NOT Remotery_FOUND AND OGRE_PROFILING_PROVIDER STREQUAL "remotery" )
 	set( OGRE_PROFILING_PROVIDER "none" )
 endif()
 
+if( OGRE_ADDRESS_SANITIZER_ASAN )
+	if( APPLE )
+		set( CMAKE_XCODE_GENERATE_SCHEME ON )
+		set( CMAKE_XCODE_SCHEME_ADDRESS_SANITIZER ON )
+		set( CMAKE_XCODE_SCHEME_ADDRESS_SANITIZER_USE_AFTER_RETURN ON )
+	elseif( UNIX )
+		set( CMAKE_C_FLAGS
+			"${CMAKE_C_FLAGS} -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize=address" )
+		set( CMAKE_CXX_FLAGS
+			"${CMAKE_CXX_FLAGS} -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize=address" )
+		set( CMAKE_LINKER_FLAGS "${CMAKE_LINKER_FLAGS} -fsanitize=address" )
+	elseif (MSVC)
+		set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS_DEBUG} /fsanitize=address" )
+		set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_DEBUG} /fsanitize=address" )
+	endif()
+endif()
+
 # hide advanced options
 mark_as_advanced(
+  OGRE_ADDRESS_SANITIZER_ASAN
   OGRE_CONFIG_DOUBLE
   OGRE_CONFIG_NODE_INHERIT_TRANSFORM
   OGRE_CONFIG_ALLOCATOR