Merge pull request swiftlang#76253 from rintaro/cmake-package-cmo-rda…

…r135110846 [CMake] Enable library evolution unconditionally for package CMO
swiftwasm · Sep 4, 2024 · 2eade1e · 2eade1e
2 parents 92c65f5 + 7a002b2
commit 2eade1e
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/cmake/modules/AddPureSwift.cmake b/cmake/modules/AddPureSwift.cmake
@@ -125,15 +125,19 @@ function(_set_pure_swift_package_options target_name package_name)
     return()
   endif()
 
-  # Enable package CMO if possible
+  # Enable package CMO if possible.
+  # NOTE: '-enable-library-evolution' is required for package CMO even when we
+  # don't need '.swiftinterface'. E.g. executables.
   if(Swift_COMPILER_PACKAGE_CMO_SUPPORT STREQUAL "IMPLEMENTED")
     target_compile_options("${target_name}" PRIVATE
+      "-enable-library-evolution"
       "SHELL:-package-name ${package_name}"
       "SHELL:-Xfrontend -package-cmo"
       "SHELL:-Xfrontend -allow-non-resilient-access"
     )
   elseif(Swift_COMPILER_PACKAGE_CMO_SUPPORT STREQUAL "EXPERIMENTAL")
     target_compile_options("${target_name}" PRIVATE
+      "-enable-library-evolution"
       "SHELL:-package-name ${package_name}"
       "SHELL:-Xfrontend -experimental-package-cmo"
       "SHELL:-Xfrontend -experimental-allow-non-resilient-access"