Merge pull request #80354 from etcwilde/ewilde/stdlib-enable-explicit-modules-builds

[SwiftCore] Enable explicit module builds

Author: etcwilde

Runtimes/Core/CMakeLists.txt

@@ -176,6 +176,7 @@ add_compile_options(
 add_link_options($<$<PLATFORM_ID:Windows>:LINKER:/WX>)
 
 add_compile_options(
+  $<$<COMPILE_LANGUAGE:Swift>:-explicit-module-build>
   "$<$<COMPILE_LANGUAGE:Swift>:-nostdlibimport>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-library-level api>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-runtime-compatibility-version none>"

Runtimes/Core/core/CMakeLists.txt

@@ -290,7 +290,6 @@ target_compile_options(swiftCore PRIVATE
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-experimental-feature AddressableTypes>"
   $<$<COMPILE_LANGUAGE:Swift>:-parse-stdlib>
   $<$<COMPILE_LANGUAGE:Swift>:-nostdimport>
-  $<$<COMPILE_LANGUAGE:Swift>:-explicit-module-build>
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -group-info-path -Xfrontend ${CMAKE_CURRENT_SOURCE_DIR}/GroupInfo.json>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-objc-attr-requires-foundation-module>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -require-explicit-availability=ignore>")