DecalreAndFetch should only load CMakeLists.txt of specified sources

CMakeLists.txt

@@ -1,45 +1,3 @@
 cmake_minimum_required(VERSION 3.5)
 project(teensy_x86_stubs C CXX)
-set(teensy_x86_stubs_VERSION 1.0.0)
-
-set(CMAKE_CXX_STANDARD 17)
-
-add_compile_definitions(__IMXRT1062__)
-add_compile_definitions(ARDUINO_TEENSY41)
-add_compile_definitions(ARDUINO=158)
-set(SOURCE_FILES
-		src/hardware_serial.cpp
-		src/Arduino.cpp
-		src/Print.cpp
-		src/Stream.cpp
-		src/WString.cpp
-        src/core_pins.cpp
-		src/IntervalTimer.cpp
-		src/AudioStream.cpp
-		src/EventResponder.cpp
-		src/digital.cpp
-		src/arm_math.cpp)
-
-if (MSVC)
-	set(SOURCE_FILES ${SOURCE_FILES} src/ctz_clz.cpp)
-endif()
-
-set(HEADER_FILES
-		src/hardware_serial.h
-		src/Arduino.h
-		src/Print.h
-		src/Printable.h
-		src/pins_arduino.h
-		src/Stream.h
-		src/WString.h
-		src/nonstd.h
-		src/AudioStream.h
-        src/core_pins.h
-		src/IntervalTimer.h
-		src/EventResponder.h
-		src/teensy_main.h
-		src/imxrt.h
-		src/arm_math.h
-		src/elapsedMillis.h)
-
-add_library(teensy_x86_stubs SHARED STATIC ${HEADER_FILES} ${SOURCE_FILES})
+add_subdirectory(src)

src/CMakeLists.txt

@@ -0,0 +1,45 @@
+cmake_minimum_required(VERSION 3.5)
+project(teensy_x86_stubs C CXX)
+set(teensy_x86_stubs_VERSION 1.0.0)
+
+set(CMAKE_CXX_STANDARD 17)
+
+add_compile_definitions(__IMXRT1062__)
+add_compile_definitions(ARDUINO_TEENSY41)
+add_compile_definitions(ARDUINO=158)
+set(SOURCE_FILES
+		hardware_serial.cpp
+		Arduino.cpp
+		Print.cpp
+		Stream.cpp
+		WString.cpp
+        core_pins.cpp
+		IntervalTimer.cpp
+		AudioStream.cpp
+		EventResponder.cpp
+		digital.cpp
+		arm_math.cpp)
+
+if (MSVC)
+	set(SOURCE_FILES ${SOURCE_FILES} src/ctz_clz.cpp)
+endif()
+
+set(HEADER_FILES
+		hardware_serial.h
+		Arduino.h
+		Print.h
+		Printable.h
+		pins_arduino.h
+		Stream.h
+		WString.h
+		nonstd.h
+		AudioStream.h
+        core_pins.h
+		IntervalTimer.h
+		EventResponder.h
+		teensy_main.h
+		imxrt.h
+		arm_math.h
+		elapsedMillis.h)
+
+add_library(teensy_x86_stubs SHARED STATIC ${HEADER_FILES} ${SOURCE_FILES})