def configure(setup)
setup.qt >= 4.2
 
setup.add_option(:name => "a-dir", 
                             :type => "path", 
                             :optional => true, 
                             :description => "Sets the a dir")
setup.add_option(:name => "a-string", 
                             :type => "string", 
                             :optional => true, 
                             :description => "Sets the a string")
setup.add_option(:name => "a-bool", 
                             :type => "bool", 
                             :optional => true, 
                             :description => "Sets the a bool")
 
setup.find_package(:name => "a-pkgconfig-package", 
                                :optional => true, 
                                :global => false)
 
setup.add_option(:name => "some-dir", 
                             :type => "path", 
                             :optional => false, 
                             :description => "Sets some dir")
 
setup.add_test(:id => "custom_test", 
                         :name => "Custom support", 
                         :custom => "int main() { return 0; }", 
                         :defines => ["HAVE_CUSTOM"], 
                         :optional => true, 
                         :global => true )
 
setup.add_test(:id => "myfeature", 
                         :name => "My feature support", 
                         :defines => ["HAVE_MY_FEATURE"], 
                         :headers => ["myfeature.h"], 
                         :libs => "-lmyfeature", 
                         :optional => true, 
                         :global => false )
end

...
include(../config.pri)
link_with(a-pkgconfig-package) {
DEFINES += SOMETHING
}
 
link_with(myfeature) {
INCLUDEPATH += /something
}