[overlay] Weakly link against ModelIO Framework

Max Moiseev · Max Moiseev · commit 1c385f189caa · 2017-09-01T15:44:23.000-07:00
Multiple overlays depend on ModelIO transitively, inlcuding GLKit. So an
app linked against GLKit will successfully build and run on the modern
OSes, but will crash on load if back-deployed to an OS where ModelIO did
not exist.

&lt;rdar://problem/33960842&gt;
&lt;rdar://problem/33471433&gt;
diff --git a/stdlib/public/SDK/ModelIO/CMakeLists.txt b/stdlib/public/SDK/ModelIO/CMakeLists.txt
@@ -11,7 +11,5 @@ add_swift_library(swiftModelIO ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK_O
   SWIFT_MODULE_DEPENDS_OSX Darwin CoreFoundation CoreGraphics Dispatch Foundation IOKit ObjectiveC simd # auto-updated
   SWIFT_MODULE_DEPENDS_IOS Darwin CoreFoundation CoreGraphics Dispatch Foundation ObjectiveC simd # auto-updated
   SWIFT_MODULE_DEPENDS_TVOS Darwin CoreFoundation CoreGraphics Dispatch Foundation ObjectiveC simd # auto-updated
-  FRAMEWORK_DEPENDS ModelIO
-
-  DEPLOYMENT_VERSION_OSX ${SWIFTLIB_DEPLOYMENT_VERSION_MODELIO_OSX}
+  FRAMEWORK_DEPENDS_WEAK ModelIO
 )

Original file line number	Diff line number	Diff line change
`@@ -11,7 +11,5 @@ add_swift_library(swiftModelIO ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK_O`
`11`	`11`	`SWIFT_MODULE_DEPENDS_OSX Darwin CoreFoundation CoreGraphics Dispatch Foundation IOKit ObjectiveC simd # auto-updated`
`12`	`12`	`SWIFT_MODULE_DEPENDS_IOS Darwin CoreFoundation CoreGraphics Dispatch Foundation ObjectiveC simd # auto-updated`
`13`	`13`	`SWIFT_MODULE_DEPENDS_TVOS Darwin CoreFoundation CoreGraphics Dispatch Foundation ObjectiveC simd # auto-updated`
`14`		`- FRAMEWORK_DEPENDS ModelIO`
`15`		`-`
`16`		`- DEPLOYMENT_VERSION_OSX ${SWIFTLIB_DEPLOYMENT_VERSION_MODELIO_OSX}`
	`14`	`+ FRAMEWORK_DEPENDS_WEAK ModelIO`
`17`	`15`	`)`