Runtimes: allow enabling prespecialization and library evolution

Adjust the StringProcessing module to follow the defaults of SwiftCore
with regards to generic metadata prespecialization and the library
evolution modes.

Author: compnerd

Runtimes/Supplemental/StringProcessing/CMakeLists.txt

@@ -38,10 +38,18 @@ option(${PROJECT_NAME}_INSTALL_NESTED_SUBDIR "Install libraries under a platform
 set(${PROJECT_NAME}_INSTALL_LIBDIR "${CMAKE_INSTALL_LIBDIR}/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>$<$<BOOL:${PROJECT_NAME}_INSTALL_NESTED_SUBDIR>:/${${PROJECT_NAME}_PLATFORM_SUBDIR}/${${PROJECT_NAME}_ARCH_SUBDIR}>")
 set(${PROJECT_NAME}_INSTALL_SWIFTMODULEDIR "${CMAKE_INSTALL_LIBDIR}/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>$<$<BOOL:${PROJECT_NAME}_INSTALL_NESTED_SUBDIR>:/${${PROJECT_NAME}_PLATFORM_SUBDIR}>")
 
+option(${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION "Generate ABI resilient runtime libraries"
+  ${SwiftCore_ENABLE_LIBRARY_EVOLUTION})
+
+option(${PROJECT_NAME}_ENABLE_PRESPECIALIZATION "Enable generic metadata prespecialization"
+  ${SwiftCore_ENABLE_PRESPECIALIZATION})
+
 add_compile_options(
   $<$<COMPILE_LANGUAGE:Swift>:-explicit-module-build>
   $<$<COMPILE_LANGUAGE:Swift>:-nostdlibimport>
-  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-implicit-string-processing-module-import>")
+  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-implicit-string-processing-module-import>"
+  "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION}>,$<COMPILE_LANGUAGE:Swift>>:-enable-library-evolution>"
+  "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_PRESPECIALIZATION}>,$<COMPILE_LANGUAGE:Swift>>:SHELL:-Xfrontend -prespecialize-generic-metadata>")
 
 add_subdirectory(_RegexParser)
 add_subdirectory(_StringProcessing)