Revision control
++ # This file is loaded by qmake right before each actual project file.
++ # Note that evaluating variable assignments from the command line
++ # still happens in between these two steps.
++
++ # In early configure setup; nothing useful to be done here.
++ isEmpty(QMAKE_CXX): return()
++
++ load(exclusive_builds)
++ CONFIG = \
++ lex yacc debug exceptions depend_includepath \
++ testcase_targets import_plugins import_qpa_plugin \
++ $$CONFIG
++
++ load(toolchain)