John Fawcett:
> Hi
>
> this is a strange error. I just had the chance to reinstall postfix from
> latest snapshot source on a new centos 7 server.
>
> When running postconf -n I was getting various errors relating to unused
> parameters from mysql map configuration files. This is an example of the
> message:
>
> postconf: warning: mysql:/etc/postfix/mysql-domains.cf: unused
> parameter: user=xxxxx
>
> Such messages were repeated for various parameters. These same
> configuration files work fine on another server (running the same
> version of postfix). I realized it was something to do with the
> compilation process. I have to admit that I never pay much attention to
> the detailed output of the compilation as long as it ends in success,
> but going back over the output I found several of these warnings:
>
> extract_cfg.sh: line 74: m4: command not found
>
> With this clue I noticed that extract_cfg.sh was not extracting all the
> keywords that could be used in mysql map type configuration files due to
> the fact I had forgotten to install m4.
>
> I was wondering if it might be wise to make m4 a mandatory prerequisite,
> without which compilation would fail.?
We could add this at the top of the script:
m4 </dev/null || exit 1
but that would be a point solution. For a dependency list someone
would have to write a tool that scrapes the scripts and enumerates
all their dependencies, and that can be (re)run with each release.
I am not inclined to curate the dependency list by hand.
I find it sad that systems have make but not m4. That tool has been
around as part of the UNIX toolkit for over 30 years, on all the
systems that I have played with.
Wietse
