isEmpty(CT_PREFIX) { CT_PREFIX = .. } isEmpty(CT_PREFIX_INSTALL) { CT_PREFIX_INSTALL = ../.. } CONFIG(debug, debug|release) { CT_DESTDIR_NAME = ComputreeInstallDebug } else { CT_DESTDIR_NAME = ComputreeInstallRelease } PLUGINSHARED_DESTDIR = $${CT_PREFIX_INSTALL}/$${CT_DESTDIR_NAME} PLUGINSHARED_PLUGIN_DESTDIR = $${PLUGINSHARED_DESTDIR}/plugins message(Element(s) will be installed to $${PLUGINSHARED_DESTDIR}) contains(QMAKE_TARGET.arch, x86_64) { DEFINES += ENVIRONMENT64 } else { isEmpty(QMAKE_TARGET.arch) { *-64 { DEFINES += ENVIRONMENT64 } else { DEFINES += ENVIRONMENT32 } } else { DEFINES += ENVIRONMENT32 } }