Linux: clang fails to build project if precompile_header turned on

Bug appears on Linux (and probably MacOSX) with any qmake project.

When precomile_header turned on via qmake variable CONFIG, and PRECOMPILED_HEADER variable set, clang creates directory "$targetName" in build dir, and writes "c++.pch" file into it.

On linkage step, ld attemts to write binary file "$targetName" and fails with message "/usr/bin/ld: cannot open output file untitled: Is a directory".

Curious fact: changing qmake variable TARGET doesn't fix problem: in this case clang saves c++.pch into $$OUT_PWS/$$TARGET directory, but TARGET=bin/(appname) will fix.