Re: config variables in config.h

[Alexandre Duret-Lutz]

>>> "Viktor" == Viktor Pavlenko <address@hidden> writes:

[...]

 Viktor> I tried the following in configure.in:

 Viktor> AC_DEFINE_UNQUOTED(MYPROG_DATA_DIR,$datadir,[myprog data directory])

 Viktor> but it doesn't work ($prefix/share is inserted and not expanded). I
 Viktor> would appreciate it if someone could tell me how to do this properly.

Here is yet another different answer, so you can't say you
don't have the choice :) 

I've stopped hard-coding absolute paths in my package because it
hinders relocation of binary packages.

Instead, at configure-time (not everybody will like this) I turn
each pathname into a path relative to $(prefix), and guess
$(prefix) at run-time.

See the following macros
 
 http://ac-archive.sourceforge.net/Miscellaneous/relpath.html
 http://ac-archive.sourceforge.net/Miscellaneous/normpath.html

and

 http://ac-archive.sourceforge.net/Miscellaneous/stdrelpaths.html

for an example.

(Obviously there are situation wheres computing relative paths is not
always possible -- think A:\foo C:\bar -- but I can live with that.)
-- 
Alexandre Duret-Lutz