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Message-Id: <3748E60E.BE7F1DD6@kiwi.iamp.tohoku.ac.jp>
Date: Mon, 24 May 1999 06:39:27 +0000
From: Samy Alex ZAIMI <zaimi AT kiwi DOT iamp DOT tohoku DOT ac DOT jp>
Reply-To: zaimi AT kiwi DOT iamp DOT tohoku DOT ac DOT jp
Organization: Institute for Advanced Materials Processing - Tohoku University
Mime-Version: 1.0
To: cygwin AT sourceware DOT cygnus DOT com
Subject: 'makedepend', 'imake' and 'xmkmf' in X11R6.4 distributions
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Hello everyone,
I would like to give some hints for proper use of
'makedepend' with X11R6. This could become part of
a FAQ or something.
The maintainers of X11R6 distributions should read
the part that concerns configuration of
'cygwin.cf' and 'cygwin32.cf' in the folder
'/usr/X11R6.4/lib/X11/config'.
-----(cut)-----

First of all, for those who do not know what I am
talking about :
1. 'imake' is a tool similar to 'make' that comes
with X11 binary distribution. The purpose is to
produce one or several 'Makefile' from a model
incidently called 'Imakefile'. Some packaged
programs contain such Imakefile, but this is by no
way a very spread rule.
2. 'xmkmf' is a shell script that automates the
above process, and calls 'imake' with proper
options (like the path where to search for config
files).
3. when 'xmkmf' is launched with the option '-a',
it does more or less a 'imake (options) ; make
Makefiles ; make depend ; make all'. Note that
'make depend' actually calls 'makedepend'.

Q: So what is 'makedepend' ?
A: It is just a utility that builds dependencies
by scanning each '*.c' files that are about to be
compiled.

Q: How does it work ?
A: It scans c files, and search an absolute access
path for all included files (headers, sources).

Q: What's the problem ?
A: The search paths. They are hard coded. And most
oftenly they never match local installations. So,
if one intends to use heavily this tool, he/she'd
better recompile it from scratch, so that local
search paths are properly configured.

Q: How do I recompile 'makedepend' ?
A: First of all, download the sources, from
'ftp://ftp.x.org/pub/R6.4/xc/config/makedepend/'
or any mirror.

Q: Next ?
A: Edit the file 'main.c', and change the
following few things :
1. change every occurence of "r" into "rb", and
"w" into "wb". That's safer if one uses text
mounted partitions.
2. change every occurence of "WIN32" into
"__CYGWIN__". That's the most critical step. If
you omit it, 'makedepend' won't simply work.

Q: I suppose all I have to do now is simply 'xmkmf
; make' ?
A: Not yet. There are a few bugs to correct in the
X11R6 distribution you might have. Do the
following :
1. edit in '/usr/X11R6.4/lib/X11/config' the files
named 'cygwin.cf' and 'cygwin32.cf'. Find the line
that starts by
    #define StdIncDir ...
DO change 386 in
'../../../../i386-cygwin32/include' into 586.
That's very important : if you don't do that, it
is like you didn't change anything. That's because
old cygwin distributions were released with a
subdirectory named 'i386-cygwin32'. Now, the
subdirectory is named 'i586-cygwin32'. Hence the
confusion.
2. edit in the same folder, the file 'X11.rules',
find the line that starts with
    # define TopXInclude
DO change '$(XPROJECTROOT)' into '$(PROJECTROOT)'.

3. You're done. You may do now 'xmkmf ; make ;
make install'. The installed 'makedepend'
executable is tailored for you (and only for you :
don't redistribute it).

------------------------------------------------------(cut)----------------------------------------------------

That's all I had to say. Sorry for being so
verbose. But any feedback, or comment, or anything
is most welcome.
Cheers,
Dr.-Ing. Sami Alex ZAIMI
Tohoku University - Sendai (Japan)


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