Fix custom CMake tasks for tools besides 'make' (jbeder#8)

The conditional that was here incorrectly accepts tools that have 'make' anywhere in their path (with Android Studio, the ninja binary is in a folder called 'cmake'). This change makes these targets correct for build tools other than 'make'.

CMakeLists.txt

@@ -178,17 +178,14 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR
 	#
 	set(yaml_cxx_flags "-Wall ${GCC_EXTRA_OPTIONS} -pedantic -Wno-long-long ${yaml_cxx_flags}")
 
-	### Make specific
-	if(${CMAKE_BUILD_TOOL} MATCHES make OR ${CMAKE_BUILD_TOOL} MATCHES gmake)
-		add_custom_target(debuggable $(MAKE) clean
-			COMMAND ${CMAKE_COMMAND} -DCMAKE_BUILD_TYPE=Debug ${CMAKE_SOURCE_DIR}
-			COMMENT "Adjusting settings for debug compilation"
-			VERBATIM)
-		add_custom_target(releasable $(MAKE) clean
-			COMMAND ${CMAKE_COMMAND} -DCMAKE_BUILD_TYPE=Release ${CMAKE_SOURCE_DIR}
-			COMMENT "Adjusting settings for release compilation"
-			VERBATIM)
-	endif()
+	add_custom_target(debuggable ${CMAKE_BUILD_TOOL} clean
+		COMMAND ${CMAKE_COMMAND} -G${CMAKE_GENERATOR} -DCMAKE_BUILD_TYPE=Debug ${CMAKE_SOURCE_DIR}
+		COMMENT "Adjusting settings for debug compilation"
+		VERBATIM)
+	add_custom_target(releasable ${CMAKE_BUILD_TOOL} clean
+		COMMAND ${CMAKE_COMMAND} -G${CMAKE_GENERATOR} -DCMAKE_BUILD_TYPE=Release ${CMAKE_SOURCE_DIR}
+		COMMENT "Adjusting settings for release compilation"
+		VERBATIM)
 endif()
 
 # Microsoft VisualC++ specialities