Subject: bug#43754: [PATCH] configure help message of --with-json

From: Eli Zaretskii <[email-masked]>
Date: Fri, 02 Oct 2020 09:47:36 +0300

> From: Lars Ingebrigtsen <[email-masked]>
> Date: Fri, 02 Oct 2020 03:14:56 +0200
> Cc: [email-masked]
> 
> Shohei Yoshida <[email-masked]> writes:
> 
> > This is the opposite meaning. --with-json means "compile with native
> > JSON support"
> 
> Thanks for the patch; applied to Emacs 28.

Any reason why we use OPTION_DEFAULT_IFAVAILABLE for json, and not
OPTION_DEFAULT_ON?  How is it different from libpng or liblcms2 or
libgnutls?