Bug 2955. Workaround for lack of atomic operations in GCCE standard libraries (fall back to default use of Mutex)
!macx-xcode {
QMAKE_CC = @echo compiling $< && $$QMAKE_CC
QMAKE_CXX = @echo compiling $< && $$QMAKE_CXX
!contains(QMAKE_LINK, "@:"):QMAKE_LINK = @echo linking $@ && $$QMAKE_LINK
QMAKE_LINK_SHLIB = @echo linking $@ && $$QMAKE_LINK_SHLIB
}