Not Configuring When Cleaning Targets

Using multi-platform configuration as described in the previous sections will run the configuration commands even when invoking scons -c to clean targets:

    % scons -Q -c
    Checking for MyLibrary... ok
    Removed foo.o
    Removed foo
    

Although running the platform checks when removing targets doesn't hurt anything, it's usually unnecessary. You can avoid this by using the GetOption(); method to check whether the -c (clean) option has been invoked on the command line:

    env = Environment()
    if not env.GetOption('clean'):
        conf = Configure(env, custom_tests = {'CheckMyLibrary' : CheckMyLibrary})
        if not conf.CheckMyLibrary():
            print 'MyLibrary is not installed!'
            Exit(1)
        env = conf.Finish()
    

    % scons -Q -c
    Removed foo.o
    Removed foo