make clean
Rule number one of compiling C programs is if you’ve changed something, compile everything which might have been affected. Rule number two however states compile only what has been affected. (You will find this out of you’re working with large projects on relative slow computers).
My complete source-code now (decmber 1998) exists of about 85K
lines, a clean compile on my P6/300 MHz takes about 2 minutes. Way
too long to wait for, much too short to do something else in the
mean time. So I don’t use clean makes every time, I make sure my
Makefile knows when to compile what by using makedepend.
The syntax for makedepend is makedepend *.c and it will
add this to your Makefile:
# DO NOT DELETE
act_comm.o: /usr/include/sys/types.h /usr/include/sys/cdefs.h
act_comm.o: /usr/include/machine/ansi.h /usr/include/machine/types.h
act_comm.o: /usr/include/machine/endian.h /usr/include/sys/time.h
act_comm.o: /usr/include/time.h /usr/include/stdio.h /usr/include/string.h
act_comm.o: /usr/include/stdlib.h /usr/include/ctype.h
act_comm.o: /usr/include/runetype.h merc.h recycle.h tables.h lookup.h
act_comm.o: color.h interp.h</pre>
Next time you run makedepend it will remove everything below the
# DO NOT DELETE and re-create the lines. Next time you run
make it will only compile act_comm.c if one of the files in
/usr/include or merc.h, recycle.h, tables.h, lookup.h, color.h or
interp.h is touched.
makedepend is part of the X11-windowing-system, often located in /usr/X11R6/bin/ or similair places. I’m not sure if there is a package for it.
If you don’t have makedepend
If you don’t have makedepend, you can use gcc for it:
Actually, if you have the latest gcc, -E and -MM option can do the same
job, for example...
depend:
$(CC) -E -MM $(C_FILES) -I. > .depend
-James Seng
CVS
CVS is a version control system, it allows you to …
- Keep track on what changes are made and in case of problems backout to an earlier revision.
- Develop on multiple computers or with multiple people and still being sure to work with the latest versions.
Okay, this will probably not convince you of it. But have a look at http://www.freebsd.org/cgi/cvsweb.cgi. It’s from the FreeBSD project and they keep track of all the changes in their sources. If it is good enough for them, it should be good enough for you too :-)
The CVS tree for this mud is also available on http://www.fataldimensions.org/cgi-edwin/cvsweb. It’s a little bit modified to not to display the source-code, only the comments.
CVS is supported right out of the box for Linux and FreeBSD environments, others should download and compile rcs (rcs.5.7.tar.gz) and cvs (cvs.1.9.tar.gz).