ios - Xcode 6 Cannot Find .pch File, Although it Exists -

i getting error clang: error: no such file or directory: '/path/to/my/project/myproject/supporting\ files/myproject-prefix.pch' xcode 6.3.1 when try build application.

however, file exists, since when type (or copy & paste path error message) $ cat /path/to/my/project/myproject/supporting\ files/myproject-prefix.pch terminal contents of file printed stdout. file linked xcode, , visible in document outline.

does know why xcode not finding file exists?

my guess in project build settings have "supporting\ files" backslash escaping space in value "prefix header". backslash should removed.

i tried on test project both , without backslash , when editing filename in xcode ui compile worked without backslash. when compile worked pbxproj file had value:

gcc_prefix_header = "foobar/supporting files/test.pch";

and "prefix header" on xcode build settings showed:

foobar/supporting files/test.pch

the backslash needed when typing path in terminal escape space.