Re: Header guards for config.h

[Guido Draheim]

Peter Eisentraut schrieb:
> Would it make sense to have autoheader create header guards against double
> inclusion into its output file?

No. Do not include config.h from a header file, unless it is again the
only single wrapper around it to be included by the rest of your
software - and don't install it. There should no multiple include-config.h
around. Writing a wrapper might also solve your current problem as well ;-)

The reason: there have been problems with third-area compilations
to have their own config.h being somewhat differently, and people
do not notice it. To guard on it, use again AX_PREFIX_CONFIG_H and
shift dependencies on those prefixed symbols - that prefix-config.h
is guarded and in my opinion that makes sense.

-- cheers, guido                            hptt://ac-archive.sf.net