fatal error: '<module>/<module>-Swift.h' file not found in mixed_language_library

[vakhidbetrakhmadov]

Hi

I am trying to build a mixed language library that has Swift and Objective-C source code.

I am getting the following error:

fatal error: 'Foo/Foo-Swift.h' file not found

I have created a minimal repro example: https://github.com/vakhidbetrakhmadov/mixed_language_library_repro

To reproduce, please run make build_foo_no_header_map or make build_foo_header_map.

[brentleyjones]

#1448 (comment)