[build] Set CRT_USE_BUILTIN_OFFSETOF when building with C++ interop on Windows

ahoppen · ahoppen · commit fc08a24e95dc · 2023-11-22T21:36:55.000-08:00
Without this, header fail to compile when they are used from Swift with C++ interop.
diff --git a/lib/ASTGen/CMakeLists.txt b/lib/ASTGen/CMakeLists.txt
@@ -109,6 +109,8 @@ set(compile_options
 
   # Necessary to avoid treating IBOutlet and IBAction as keywords
   "SHELL:-Xcc -UIBOutlet -Xcc -UIBAction -Xcc -UIBInspectable"
+
+  "SHELL:-Xcc -D_CRT_USE_BUILTIN_OFFSETOF"
 )
 
 if(SWIFT_BUILD_SWIFT_SYNTAX)

Original file line number	Diff line number	Diff line change
`@@ -109,6 +109,8 @@ set(compile_options`
`109`	`109`
`110`	`110`	`# Necessary to avoid treating IBOutlet and IBAction as keywords`
`111`	`111`	`"SHELL:-Xcc -UIBOutlet -Xcc -UIBAction -Xcc -UIBInspectable"`
	`112`	`+`
	`113`	`+ "SHELL:-Xcc -D_CRT_USE_BUILTIN_OFFSETOF"`
`112`	`114`	`)`
`113`	`115`
`114`	`116`	`if(SWIFT_BUILD_SWIFT_SYNTAX)`