[SR-9189] CI Failure: error: umbrella header 'CoreFoundation.h' not found

[milseman]

Previous ID	SR-9189
Radar	None
Original Reporter	@milseman
Type	Bug

Additional Detail from JIRA

Votes	0
Component/s	Foundation
Labels	Bug, CoreFoundation
Assignee	None
Priority	Medium

md5: ac487b01886de257ae8daac645e9ee5f

Issue Description:

Several bots are failing trying to find CoreFoundation.h header file:

https://ci.swift.org/job/oss-swift-5.0-incremental-RA-linux-ubuntu-14_04-long-test//24/console
https://ci.swift.org/job/oss-swift-5.0-incremental-RA-linux-ubuntu-16_04//25/console
https://ci.swift.org/job/oss-swift-5.0-incremental-RA-linux-ubuntu-16_04-long-test//25/console
https://ci.swift.org/job/oss-swift-5.0-incremental-RA-linux-ubuntu-18_04//46/console
https://ci.swift.org/job/oss-swift-5.0-incremental-RA-linux-ubuntu-18_04-long-test//25/console

/home/buildnode/jenkins/workspace/oss-swift-5.0-incremental-RA-linux-ubuntu-18_04-long-test/swift-corelibs-foundation/../buildbot_incremental/foundation-linux-x86_64/Foundation/usr/lib/swift/CoreFoundation/module.modulemap:2:21: error: umbrella header 'CoreFoundation.h' not found
12:12:53 umbrella header "CoreFoundation.h"
12:12:53 ^
12:12:53
Foundation/NSObject.swift:15:8: error: could not build C module 'CoreFoundation'
12:12:53 import CoreFoundation

[milseman]

CC @compnerd @gottesmm

[gottesmm]

MichaelI this is a known problem. The issue is that we did not branch any of the other repos for swift-5.0-branch. So those other repos have content that was merged so that compnerd's changes on master would work.