Gcc-generated dependencise. (Was: Re: dump (temacs) fails, core in alloc.c)

["Jan Djärv" <jan.h.d@swipnet.se>]

Stefan Monnier skrev:
>> How about detecting if we are using gcc and generate dependencies on the fly
>> while compiling the first time?  I see many packages that does so. Would
>> such a change be OK?
> 
> That would be good, yes.  As long as it doesn't break builds on non-gcc
> and non-gmake systems.
> 

I have checked in dependency generation on the fly for src.  Configure checks 
for gcc -MMD -MF and GNU Make and if not explicitly disabled with 
--disable-autodepend, dependencies are then generated when files are compiled.

	Jan D.