Merge pull request #64362 from etcwilde/ewilde/cmake_backtracing_option

Tie Swift backtracing pieces together in build

Author: etcwilde

CMakeLists.txt

@@ -647,6 +647,10 @@ option(SWIFT_ENABLE_MACCATALYST
   "Build the Standard Library and overlays with MacCatalyst support"
   FALSE)
 
+option(SWIFT_ENABLE_BACKTRACING
+  "Build backtracing runtime support"
+  FALSE)
+
 set(SWIFT_DARWIN_DEPLOYMENT_VERSION_MACCATALYST "14.5" CACHE STRING
   "Minimum deployment target version for macCatalyst")
 

stdlib/public/CMakeLists.txt

@@ -159,7 +159,9 @@ if(SWIFT_BUILD_STDLIB)
     add_subdirectory(Observation)
   endif()
 
-  add_subdirectory(Backtracing)
+  if(SWIFT_ENABLE_BACKTRACING)
+    add_subdirectory(Backtracing)
+  endif()
 endif()
 
 if(SWIFT_BUILD_REMOTE_MIRROR)