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Re: Compiling with MPFR - documentation


From: arnold
Subject: Re: Compiling with MPFR - documentation
Date: Mon, 21 Jun 2021 00:52:50 -0600
User-agent: Heirloom mailx 12.5 7/5/10

Hi.

This is done. There is now a new section in the manual.

Thanks!

Arnold

arnold@skeeve.com wrote:

> Hi.
>
> Thanks for the bug report. I will get to this.
>
> Arnold
>
> Peter Lindgren <ogswd-awk@yahoo.com> wrote:
>
> > I have been periodically compiling the latest gawk from git on a Raspberry
> > Pi (under Raspberry Pi OS which is basically Debian with a custom look and
> > feel), but I only recently realized that I wasn't getting MPFR support.
> > 
> > I googled and read the manual and looked around and wondered how to get
> > it. There's a good bit in the manual about what it is, and what you can
> > do with it, and how to tell if it's there, but I couldn't find anything
> > about how to get it. Make option? Configure option? 
> > 
> > Eventually, I just guessed that gawk might use it if it were present. So
> > I did some more flailing about to determine which packages to install
> > (like searching for "debian buster mpfr package"), assuming I would need
> > the development packages, and I eventually did this :
> > 
> > sudo apt install libgmp-dev libmpfr-dev
> >
> > I then git pulled and rebuilt gawk as always and voila! The MPFR and
> > GMP support was there. 
> > 
> > After the fact, I found this article by Arnold Robbins: 
> > https://www.linuxjournal.com/content/gnu-awk-41-teaching-old-bird-some-new-tricks-part-ii
> > which stated it clearly: 
> >
> > "This is an optional feature: if you have the MPFR and GMP libraries
> > installed when you configure and build gawk, gawk automatically will
> > be able to use them."
> > 
> > Enhancement request: that this clear statement and which packages to
> > install gets added to the manual. 
> >
> > P.S: I really like the 5^4^3^2 example. 




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