Remove Foundation dependency

Author: salinas-miguel

tools/swift-stdlib-tool/CMakeLists.txt

@@ -1,6 +1,8 @@
 add_swift_host_tool(swift-stdlib-tool
-  swift-stdlib-tool.mm
+  swift-stdlib-tool.cpp
   SWIFT_COMPONENT compiler)
 
-find_library(FOUNDATION NAMES Foundation)
-target_link_libraries(swift-stdlib-tool PRIVATE ${FOUNDATION})
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+
+target_link_libraries(swift-stdlib-tool PRIVATE)