qmake Variable Reference

CONFIG

The CONFIG variable specifies project configuration and compiler options. The values will be recognized internally by qmake and have special meaning. They are as follows.

These CONFIG values control compilation flags:

Since the debug option overrides the release option when both are defined in the CONFIG variable, it is necessary to use the debug_and_release option if you want to allow both debug and release versions of a project to be built. In such a case, the Makefile that qmake generates includes a rule that builds both versions, and this can be invoked in the following way:

 make all

Adding the build_all option to the CONFIG variable makes this rule the default when building the project, and installation targets will be created for both debug and release builds.

Additionally, adding debug_and_release to the CONFIG variable will cause both debug and release to be defined in the contents of CONFIG when the project file is processed, causing scopes that test for each value to be processed for both debug and release modes. As a result, it may be useful to define mode-specific variables, such as QMAKE_LFLAGS_RELEASE, instead of general variables, such as QMAKE_LFLAGS, where possible.

The following options define the application/library type:

These options are used to set the compiler flags:

These options define specific things on Windows only:

See qmake Platform Notes for more information on the options for embedding manifest files.

These options only have an effect on Mac OS X:

The build process for bundles is also influenced by the contents of the QMAKE_BUNDLE_DATA variable.

The CONFIG variable will also be checked when resolving scopes. You may assign anything to this variable.

For example:

 CONFIG += qt console newstuff
 ...
 newstuff {
     SOURCES += new.cpp
     HEADERS += new.h
 }

 DEFINES += USE_MY_STUFF QT_DLL

 DESTDIR = ../../lib

 DISTFILES += ../program.txt

 FORMS = mydialog.ui \
     mywidget.ui \
         myconfig.ui

 FORMS3 = my_uic3_dialog.ui \
      my_uic3_widget.ui \
          my_uic3_config.ui

 HEADERS = myclass.h \
           login.h \
           mainwindow.h

 INCLUDEPATH = c:/msdev/include d:/stl/include

 target.path += $$[QT_INSTALL_PLUGINS]/imageformats
 INSTALLS += target

 LEXSOURCES = lexer.l

 unix:LIBS += -L/usr/local/lib -lmath
 win32:LIBS += c:/mylibs/math.lib

 CONFIG += no_lflags_merge

 # To include a literal hash character, use the $$LITERAL_HASH variable:
 urlPieces = http://doc.trolltech.com/4.0/qtextdocument.html pageCount
 message($$join(urlPieces, $$LITERAL_HASH))

 unix:MOC_DIR = ../myproject/tmp
 win32:MOC_DIR = c:/myproject/tmp

 unix:OBJECTS_DIR = ../myproject/tmp
 win32:OBJECTS_DIR = c:/myproject/tmp

 app {
     # Conditional code for 'app' template here
 }

 FRAMEWORK_HEADERS.version = Versions
 FRAMEWORK_HEADERS.files = path/to/header_one.h path/to/header_two.h
 FRAMEWORK_HEADERS.path = Headers
 QMAKE_BUNDLE_DATA += FRAMEWORK_HEADERS

 QMAKE_BUNDLE_EXTENSION = .myframework

 QMAKE_RESOURCE_FLAGS += -threshold 0 -compress 9

     QMAKE_UIC = uic -L /path/to/plugin

     QT -= gui # Only the core module is used.

     unix:RCC_DIR = ../myproject/resources
     win32:RCC_DIR = c:/myproject/resources

     SOURCES = myclass.cpp \
           login.cpp \
           mainwindow.cpp

     SUBDIRS = kernel \
               tools

     CONFIG += ordered

     TEMPLATE = app
     TARGET = myapp
     SOURCES = main.cpp

     TEMPLATE = lib
     SOURCES = main.cpp
     TARGET = mylib

     unix:UI_DIR = ../myproject/ui
     win32:UI_DIR = c:/myproject/ui

     unix:UI_HEADERS_DIR = ../myproject/ui/include
     win32:UI_HEADERS_DIR = c:/myproject/ui/include

     unix:UI_SOURCES_DIR = ../myproject/ui/src
     win32:UI_SOURCES_DIR = c:/myproject/ui/src

     VERSION = 1.2.3

     YACCSOURCES = moc.y