Re: Speeding up config.status

[Akim Demaille]

>>>>> "Akim" == Akim Demaille <address@hidden> writes:

Akim> Hm...  Well, yes, speeding this up would be pretty beneficial.
Akim> IMHO, something which would help could be to have single file
Akim> with only the substitutions to perform, instead of the whole
Akim> Makefile.in, which contains a lot of lines where no substitution
Akim> is to be performed.

BTW, there is something which config.status can do very easily: output
a file with all the constant parts of the AC_SUBST (i.e., not
top_srcdir etc., but CC, CFLAGS etc.).

Then Automake could just include this file.

I would always create this file, say config.subst, but we could
introduce a new macro to ask for its creation.