Re: Puzzle:where does gcc_cv_as come from?

[Ian Lance Taylor]

"Amker.Cheng" <amker.ch...@gmail.com> writes:

> if test "${gcc_cv_as+set}" = set; then
>   :
> else
>   #other commands...
> fi

Note that the other commands set gcc_cv_as.


> I don't know much about configure process, So where does gcc_cv_as come from?

The first time you run configure, it is not set, and the "other
commands" are run.  The second time, it comes from the config.cache
file.

Ian