Bug 2955. Workaround for lack of atomic operations in GCCE standard libraries (fall back to default use of Mutex)
!isEmpty(QMAKE_LINK_C):QMAKE_LINK = $$QMAKE_LINK_C
!isEmpty(QMAKE_LINK_C_SHLIB) {
!isEmpty(QMAKE_LINK_SHLIB_CMD):QMAKE_LINK_SHLIB_CMD ~= s/^$$re_escape($$QMAKE_LINK_SHLIB)$/$$QMAKE_LINK_C_SHLIB/
QMAKE_LINK_SHLIB = $$QMAKE_LINK_C_SHLIB
}