Merge pull request swiftlang#29511 from compnerd/cohabitation

build: move `compute_library_subdir` to where it is used

Author: compnerd

cmake/modules/AddSwift.cmake

@@ -28,16 +28,6 @@ function(add_dependencies_multiple_targets)
   endif()
 endfunction()
 
-# Compute the library subdirectory to use for the given sdk and
-# architecture, placing the result in 'result_var_name'.
-function(compute_library_subdir result_var_name sdk arch)
-  if(sdk IN_LIST SWIFT_APPLE_PLATFORMS OR sdk STREQUAL "MACCATALYST")
-    set("${result_var_name}" "${SWIFT_SDK_${sdk}_LIB_SUBDIR}" PARENT_SCOPE)
-  else()
-    set("${result_var_name}" "${SWIFT_SDK_${sdk}_LIB_SUBDIR}/${arch}" PARENT_SCOPE)
-  endif()
-endfunction()
-
 function(_compute_lto_flag option out_var)
   string(TOLOWER "${option}" lowercase_option)
   if (lowercase_option STREQUAL "full")

cmake/modules/SwiftSource.cmake

@@ -1,6 +1,16 @@
 include(macCatalystUtils)
 include(SwiftUtils)
 
+# Compute the library subdirectory to use for the given sdk and
+# architecture, placing the result in 'result_var_name'.
+function(compute_library_subdir result_var_name sdk arch)
+  if(sdk IN_LIST SWIFT_APPLE_PLATFORMS OR sdk STREQUAL "MACCATALYST")
+    set("${result_var_name}" "${SWIFT_SDK_${sdk}_LIB_SUBDIR}" PARENT_SCOPE)
+  else()
+    set("${result_var_name}" "${SWIFT_SDK_${sdk}_LIB_SUBDIR}/${arch}" PARENT_SCOPE)
+  endif()
+endfunction()
+
 # Process the sources within the given variable, pulling out any Swift
 # sources to be compiled with 'swift' directly. This updates
 # ${sourcesvar} in place with the resulting list and ${externalvar} with the