SDL: cmake: get_filename_component(EXT) retturns extension including leading dot

SDL Commits
1 
From ce4c54e2b2b283d561e5e617f007a5300bdb9660 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Wed, 15 Mar 2023 14:55:56 +0100
Subject: [PATCH] cmake: get_filename_component(EXT) retturns extension
 including leading dot

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb43fbbee505..fe7d3ce3bf69 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3297,7 +3297,7 @@ endif()
 if(APPLE)
   foreach(SOURCE_FILE ${SOURCE_FILES})
     get_filename_component(FILE_EXTENSION ${SOURCE_FILE} EXT)
-    if(FILE_EXTENSION STREQUAL "m")
+    if(FILE_EXTENSION STREQUAL ".m")
       set_property(SOURCE ${SOURCE_FILE} APPEND_STRING PROPERTY COMPILE_FLAGS " -x objective-c")
     endif()
   endforeach()