cmake: Enable CET compatibility for x86/x64 targets using VS 16.7+

CMakeLists.txt

@@ -688,6 +688,11 @@ if(MSVC)
   target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_SECURE_NO_DEPRECATE")
   target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_NONSTDC_NO_DEPRECATE")
   target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_SECURE_NO_WARNINGS")
+
+  # CET support was added in VS 16.7
+  if(MSVC_VERSION GREATER 1926 AND NOT CMAKE_GENERATOR_PLATFORM MATCHES ARM)
+    list(APPEND EXTRA_LDFLAGS_BUILD "-CETCOMPAT")
+  endif()
 endif()
 
 if(MSVC)

test/CMakeLists.txt

@@ -47,6 +47,11 @@ if(WINDOWS)
         link_libraries(mingw32)
     endif()
 
+    # CET support was added in VS 16.7
+    if(MSVC_VERSION GREATER 1926 AND NOT CMAKE_GENERATOR_PLATFORM MATCHES ARM)
+        link_libraries(-CETCOMPAT)
+    endif()
+
     # FIXME: Parent directory CMakeLists.txt only sets these for mingw/cygwin,
     # but we need them for VS as well.
     link_libraries(SDL2main)