AM_LANGINFO_CODESET missing

[Adam Nielsen]

Hi all,

I'm trying to install the "gnokii" software package, but it no longer
compiles with gettext 0.20.  It worked with 0.19.8, but with 0.20 gives
this error:

    configure.ac:75: error: possibly undefined macro: AM_LANGINFO_CODESET

Doing some digging it looks like the AM_LANGINFO_CODESET macro was
removed in this commit:

    commit 8c2bfdbddb13a480d88ceac4ab0e5886bda957cb
    Author: Bruno Haible <address@hidden>
    Date:   Sun Nov 25 02:12:04 2018 +0100

    build: Remove some duplicate .m4 files.
    
    * autogen.sh: Copy wchar_t.m4 and wint_t.m4 for libasprintf.
    * gettext-runtime/m4/codeset.m4: Remove file.
    * gettext-runtime/m4/extern-inline.m4: Remove file.
    * gettext-runtime/m4/intl-thread-locale.m4: Remove file.
    * gettext-runtime/m4/lcmessage.m4: Remove file.
    * gettext-runtime/m4/lock.m4: Remove file.
    * gettext-runtime/m4/longlong.m4: Remove file.
    * gettext-runtime/m4/threadlib.m4: Remove file.
    * gettext-runtime/m4/wchar_t.m4: Remove file.
    * gettext-runtime/m4/wint_t.m4: Remove file.
    * gettext-runtime/m4/Makefile.am (EXTRA_DIST): Don't distribute them.
    * Makefile.am (distcheck-hook): Don't verify that they are identical copies.

I had a look through the README and NEWS but couldn't find any
information about what has replaced AM_LANGINFO_CODESET or even that it
had been removed.

Was its removal a mistake, or has it been replaced with a different
macro?  Or have I just missed the place where this change was explained?

I'm just a user of the gnokii library so I'm not sure why they are
using this macro, only that I am unable to compile it any more!

Many thanks,
Adam.