1 exists($$_QMAKE_CACHE_):QMAKE_QT_CONFIG = $$fromfile($$_QMAKE_CACHE_, QMAKE_QT_CONFIG)

     2 isEmpty(QMAKE_QT_CONFIG)|!exists($$QMAKE_QT_CONFIG) {

     3    !isEmpty(QT_BUILD_TREE):QMAKE_QT_CONFIG = $$QT_BUILD_TREE/mkspecs/qconfig.pri

     4    else:exists($$_QMAKE_CACHE_):infile($$_QMAKE_CACHE_, QT_BUILD_TREE):QMAKE_QT_CONFIG = $$fromfile($$_QMAKE_CACHE_, QT_BUILD_TREE)/mkspecs/qconfig.pri

     5    else:exists($$[QT_INSTALL_DATA]/mkspecs/qconfig.pri):QMAKE_QT_CONFIG = $$[QT_INSTALL_DATA]/mkspecs/qconfig.pri

     6 }

     7 !exists($$QMAKE_QT_CONFIG)|!include($$QMAKE_QT_CONFIG, "", true) {

     8    debug(1, "Cannot load qconfig.pri!")

     9 } else {

    10    debug(1, "Loaded .qconfig.pri from ($$QMAKE_QT_CONFIG)")

    11 }

    12 

    13 load(qt_functions)

    14