Enable library evolution for swift modules

Author: jmschonfeld

Sources/FoundationEssentials/CMakeLists.txt

@@ -35,7 +35,8 @@ endif()
 
 target_compile_options(FoundationEssentials PRIVATE
     "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 AccessLevelOnImport>"
+    "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-enable-library-evolution>")
 target_compile_options(FoundationEssentials PRIVATE ${_SwiftFoundation_availability_macros})
 target_compile_options(FoundationEssentials PRIVATE -package-name "SwiftFoundation")
 

Sources/FoundationInternationalization/CMakeLists.txt

@@ -16,7 +16,8 @@ file(GLOB_RECURSE _FoundationInternationalizationSources "*.swift")
 add_library(FoundationInternationalization SHARED ${_FoundationInternationalizationSources})
 
 target_compile_options(FoundationInternationalization PRIVATE
-    "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -enable-experimental-feature -Xfrontend AccessLevelOnImport>")
+    "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -enable-experimental-feature -Xfrontend AccessLevelOnImport>"
+    "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-enable-library-evolution>")
 target_compile_options(FoundationInternationalization PRIVATE ${_SwiftFoundation_availability_macros})
 target_compile_options(FoundationInternationalization PRIVATE -package-name "SwiftFoundation")