2.4. Cleaning Up After a Build
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## 2.4. Cleaning Up After a Build

For cleaning up your build tree, SCons provides a "clean" mode, selected by the `-c` or `--clean` option when you invoke SCons. SCons selects the same set of targets it would in build mode, but instead of building, removes them. That means you can control what is cleaned in exactly the same way as you control what gets built. If you build the C example above and then invoke `scons -c` afterwards, the output on POSIX looks like:

    % scons
    scons: Reading SConscript files ...
    scons: done reading SConscript files.
    scons: Building targets ...
    cc -o hello.o -c hello.c
    cc -o hello hello.o
    scons: done building targets.
    % scons -c
    scons: Reading SConscript files ...
    scons: done reading SConscript files.
    scons: Cleaning targets ...
    Removed hello.o
    Removed hello
    scons: done cleaning targets.

And the output on Windows looks like:

    C:\>scons
    scons: Reading SConscript files ...
    scons: done reading SConscript files.
    scons: Building targets ...
    cl /Fohello.obj /c hello.c /nologo
    link /nologo /OUT:hello.exe hello.obj
    embedManifestExeCheck(target, source, env)
    scons: done building targets.
    C:\>scons -c
    scons: Reading SConscript files ...
    scons: done reading SConscript files.
    scons: Cleaning targets ...
    Removed hello.obj
    Removed hello.exe
    scons: done cleaning targets.

Notice that SCons changes its output to tell you that it is `Cleaning targets ...` and `done cleaning targets.`

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