qmake always sets that variable, so unless somebody pro-actively screws
it up (which doesn't seem like being worth checking for), it will just
work.
Change-Id: I3c4ada47cbd34ac68695d8efbf09c605392616f5
Reviewed-by: Joerg Bornemann <joerg.bornemann@nokia.com>
tools like idc and lrelease are outside qtbase/bin and depend on libraries
which are not in any search path, so we need some way to let the modules
announce the locations (qt_tool.prf) and use it (in qtPrepareTool()).
Change-Id: I98d5109cbee5e745d86dde94e3dc791d42edc3ec
Reviewed-by: Marius Storm-Olsen <marius.storm-olsen@nokia.com>