I redesigned the entire XWP sources structure with V0.9.0 and made some more changes with V0.9.12. The sources were supposed to be structured so that the following was possible:

• Several developers must be able to cooperatively work on the sources. As a result, it must be possible for each developer to work on his own directory to avoid conflicts.

• Still, it should be possible to build the entire thing in one snap.

• Building the entire thing should even take place if a makefile from one of the subdirectories was called.

• The makefiles should be easily adjustable in case someone wants to use a different compiler.

• Clean separation of files which reside on the Netlabs CVS server from those which are created in the build process.

• Since the helpers from the "xwphelpers" CVS archive are used, it must be possible to call the makefile in that directory, but still write the .OBJ files into the XWorkplace bin\ directory.

• It should be possible to rebuild the executables (XFLDR.DLL and the .EXE files) and just restart the WPS for the changes to take effect.

• With V0.9.12, I was finally getting tired of always manually updating the makefile dependencies if #include statements were changed in the sources. So nmake dep support had to be introduced.

• A single configuration file which sets up all compiler and linker options. This is setup.in in the main directory, which is included from all makefiles via the nmake !include directive.

• System-dependent configuration (directories etc.) is done via another file, config.in.

• The makefiles create all output files (.OBJ, .DLL, .EXE) in the bin\ directory, which is created if it doesn't exist.

  To rebuild the entire thing, one can simply delete the entire bin\ tree.

• If the main makefile is started, it changes to the subdirectories and calls nmake again with MAINMAKERUNNING=YES defined. This way the sub-makefile knows that it's started from the main makefile. Otherwise the sub-makefile calls the main makefile (which in turn calls the sub-makefile) so that the entire thing always gets rebuilt.

• The sub-makefiles compile only. Linking is done by the main makefile. This way every executable can use shared code, such as the helpers.

• nmake dep is supported through a new makefile in src\ which calls all makefiles in the subdirectories of src\ with either the "all" or the "dep" target. A "dep" target was then added to all the makefiles in src\ which invokes fastdep on all C files to produce the .depend file... which is in turn included in the makefiles.

  This invokes fastdep.exe from the XWP Helpers directory, which I stole from the Odin sources. fastdep was written by Knut Stange Osmundsen and creates a .depend file in each source directory with all the includes which are retrieved directly from the C sources.