Re: m4-1.4.17 make error

[Eric Blake]

On Tue, Mar 08, 2022 at 05:55:11PM +0300, Seniha Çelik wrote:
> Hello,
> I am facing with a problem, so I need some help.
> I am using Ubuntu 20.04 and trying to install m4-1.4.17. I need the older
> version to run a program, that's why I am using this version.

Why do you need the older version?  This issue has been fixed in newer
releases.

> gcc  -I.     -g -O2 -MT freadahead.o -MD -MP -MF $depbase.Tpo -c -o
> freadahead.o freadahead.c &&\
> mv -f $depbase.Tpo $depbase.Po
> freadahead.c: In function 'freadahead':
> freadahead.c:91:3: error: #error "Please port gnulib freadahead.c to your
> platform! Look at the definition of fflush, fread, ungetc on your system,
> then report this to bug-gnulib."

This is a known issue with mixing old m4 builds with newer libc.  The
solution is to either build with older libc, or to upgrade to a newer
build of m4, or to manually backport the fix from newer m4 on top of
your older m4 build (if you can even come up with a convincing reason
why newer m4 will not work for your needs).

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
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