To build and install as a DSO outside of the httpd source
build, from the ftp source root directory, simply;

    ./configure.apxs
    make
    make install

If apxs is not in your path, or you are building to a different
httpd installation, either set the APXS environment variable, or
the syntax;

    APXS=/path/to/bin/apxs ./configure.apxs

so the desired configuration is picked up.

To build static, or as a DSO but within the same build as httpd,
copy the entire ftp source directory tree on top of your existing 
httpd source tree, and from the httpd source root directory

    ./buildconf  (to pick up ftp)
    ./configure --enable-ftp {your usual options}

and proceed as usual.

On windows, to build out of tree as a DSO, simply

    set APACHE2_HOME=c:\apache22

        -and then...-

    msdev /useenv mod_ftp.dsw

        -or-

    devenv /useenv mod_ftp.dsw

The later command is needed on Visual Studio 2002 and later, and converts
mod_ftp.dsw to mod_ftp.sln, so after converting once, invoke 

    devenv /useenv mod_ftp.sln

On windows you can overlay mod_ftp into the httpd tree, however you
would have to manually add the project mod_ftp.dsp to the Apache.dsw
workspace, ensure the BuildBin project includes the mod_ftp project
as a dependency, and for the mod_ftp project add dependencies of
libhttpd, libapr and libaprutil.  Also note that mod_ftp.so needs to
be added to the module installation lines in Makefile.win.



To regenerate the html.en documentation, here again it's as simple
as copying the content docs/ into an httpd/docs/ tree and regenerating
httpd's documentation.  However, it's also possible you are generating
a local copy for reference in mod_ftp's tree, in that case you must
have a copy of the httpd docs/manual/style.  For example;

    cd docs/manual
    svn co http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/manual/style

In either case;

    cd docs/manual
    svn co http://svn.apache.org/repos/asf/httpd/docs-build/trunk build
    cd build

    ./build.sh all

        -or on windows...-

    build.bat all

The same rules about an installed, locatable JAVA_HOME apply to building
mod_ftp docs as apply to httpd.

The advantage to building in-tree within httpd is that you gain the complete
directive cross references applicable to all httpd and mod_ftp directives.