Enable WMO

Author: jmschonfeld

Sources/FoundationEssentials/CMakeLists.txt

@@ -61,6 +61,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL Linux OR CMAKE_SYSTEM_NAME STREQUAL Android)
 endif()
 
 target_compile_options(FoundationEssentials PRIVATE
+    "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-whole-module-optimization>"
     "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -enable-experimental-feature -Xfrontend VariadicGenerics>"
     "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -enable-experimental-feature -Xfrontend AccessLevelOnImport>"
     "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -enable-experimental-feature -Xfrontend StrictConcurrency>"