[iOS] fatal error: malformed or corrupted AST file 해결

xcode가 다음 메세지를 표시하면서 빌드가 안될때.

fatal error: malformed or corrupted AST file: 'could not find file '\~.h' referenced by AST file' note: after modifying system headers, please delete the module cache at '~'

해결방법.

xcode > Preferences > Locations > Derived Data > ModuleCache Delete

그러면 잘됨.