Re: [Info-mtools] Undefined libiconv symbols

[Pali Rohár]

On Tuesday 10 November 2020 08:19:02 Ryan Schmidt wrote:
> On Nov 10, 2020, at 08:13, Pali Rohár wrote:
> 
> > On Tuesday 10 November 2020 08:09:33 Ryan Schmidt wrote:
> >> On Nov 10, 2020, at 07:55, Pali Rohár wrote:
> >> 
> >>> On Tuesday 10 November 2020 07:49:28 Ryan Schmidt wrote:
> >>>> On Nov 9, 2020, at 07:21, Frank Loeffler wrote:
> >>>> 
> >>>>> Could it be that you have multiple versions of iconv installed
> >>>> 
> >>>> I have the macOS version of libiconv installed of course, and also the 
> >>>> MacPorts version which is the one that I am intending to use.
> >>>> 
> >>>> 
> >>>>> and you use the headers of one version but then the library of the 
> >>>>> other?
> >>>> 
> >>>> I am aware of that type of problem -- I am the MacPorts maintainer of 
> >>>> libiconv -- but that's not what's happening here. If it were, adding 
> >>>> -liconv would not fix it.
> >>> 
> >>> This really looks like a problem that autoconf/automake have not used
> >>> correct compile/link flags. As I said AM_ICONV should be used. Add it
> >>> into configure.in into "dnl Checks for libraries." section and re-run
> >>> all auto* tools.
> >> 
> >> I agree there should be a standard way to handle this but I am not an 
> >> expert at modifying autotools files. I tried adding "AM_ICONV" on a line 
> >> by itself after the "dnl Checks for libraries" comment, and then running 
> >> autoreconf produces this error:
> >> 
> >> configure.in:87: error: possibly undefined macro: AM_ICONV
> >>      If this token and others are legitimate, please use m4_pattern_allow.
> >>      See the Autoconf documentation.
> > 
> > Check that you have installed gettext package. Part of it is aclocal's
> > iconv.m4 macro file which contains definition of AM_ICONV macro.
> 
> Yes, gettext and its iconv.m4 are installed.

Ah :-( Then aclocal is not able to find them and it is needed to be
debugged... If you do not know or do not want, take some working Linux
box, re-run autoreconf on it and copy generated project to your target
box.

For debugging: reconf is first calling aclocal which scans configure.in
file, checks which macros are used, search for them in aclocal directory
and then generate file aclocal.m4, where should be copy of every needed
macro from original system files. So it should copy AM_ICONV from
iconv.m4 into aclocal.m4. Then reconf calls autoconf to generate
configure file from configure.in+aclocal.m4 (and possible other files in
current directory). And after reconf calls automake to generate Maekfile
file from Makefile.in files.

You may try to call these tools manually (instead of autoreconf) and
possibly call them with verbose, force and other arguments, maybe also
with specifying directory where is your iconv.m4...

-- 
Pali Rohár
pali.rohar@gmail.com