[Python-Dev] autoheader warning for WITH_UNIVERSAL_NEWLINES (original) (raw)

Guido van Rossum guido@python.org
Tue, 16 Apr 2002 08:41:15 -0400

how do I find out about all this autoconf magic? I simply used the code for another configure option (WITHGC, I think) as a template and modified it for my needs. But I'm really groping in the dark with configure. I've have never heard of autoheader, for instance, and haven't a clue that I should have used it (if I should have, and for what:-)

I think Martin redid the configure.in stuff just after you were done with your patch but before you checked it in. :-)

autoheader is used to create the pyconfig.h.in file. It's run by the Makefile when you say "make autoconf". A common mistake when adding a new configure check or option is to add the desired symbol directly into pyconfig.h.in. The correct solution is currently to use a 3-arg AC_DEFINE call as Martin showed; until last week, it was to add a few lines to acconfig.h (which no longer exists).

Docs for autoconf and autoheader are in info form. If you're still a vi(m) user :-), "info autoheader" at the shell command line will tell you more.

--Guido van Rossum (home page: http://www.python.org/~guido/)