Re: glib-2.0.1 on Mac OS 10.1

[Cody Russell <bratsche gnome org>]

Do you, or does anyone else, know what the status is (if any) of a port
of GDK (2.0.x) to MacOSX?

On Tue, 2002-04-30 at 17:42, Karin Kosina wrote:
> Hi,
> 
>   I have just compiled glib-2.0.1 on Mac OS 10.1.4 (build 5Q125), and I
> thought you might be interested in the following comments.
> 
> First, by default on Mac OS 10.1, the linker flag -twolevel_namespace is
> assumed. Libtool (at least the version you are using, and until 2 months
> ago; I haven't tested the latest libtool release) uses the flag 
> "-undefined suppress", which is only allowed in flat namespace binaries.
> The solution is to either specify "-undefined error" in LDFLAGS and make 
> sure it is also passed correctly when calling the linker from libtool,
> and ensuring that there are no undefined symbols when linking; or
> specifying "-flat_namespace -undefined suppress" in libtool's 
> allow_undefined_flag.
> 
> Secondly, it is recommended to use the "-no-cpp-precomp" compiler
> switch, which turns off Apple's preprocessor and uses the gcc default
> one instead. The Apple precompiler chokes on everything non-Apple, it
> seems (indicated by a lot of "cpp-precomp: warning: errors during smart
> preprocessing, retrying in basic mode" messages), so better not use it 
> in the first place.
> 
> And lastly, which was the only "real" problem, there is a problem with
> libtool. I do not know what exactly happens, but some convenience
> libraries end up _twice_ on the commandline, resulting in linker errors.
> The dirty hack I used was to patch libtool so that the duplicate
> entries are removed (see attachment) -- the real solution would be to 
> investigate what happens. :) Since I just needed glib up and running, 
> I will leave this as an exercise to the interested reader.
> 
> I think that the Fink people (fink.sf.net) have glib-1.2 in their
> distribution, which means that they probably found a clean solution to
> the libtool problem mentioned above. I do not know if you are in contact
> with them, or if you are interested in supporting Mac OS X at all. If
> you want, I can take a look at how they solved it and report back to you
> -- but I do not want to spend that time and then find out that you don't
> consider Darwin / OS X to be of any interest anyway.
> 
> Well, I just thought you might be interested in getting some feedback.
> Thanks for the great work you keep doing!
> 
> Best regards,
> #!/kyrah
> 
> -- 
> Karin Kosina (vka kyrah)
> http://kyrah.net
> 
> ----
> 

> --- libtool	Tue Apr 30 23:24:28 2002
> +++ libtool.mod	Tue Apr 30 23:27:59 2002
> @@ -3090,6 +3090,13 @@
>  	if test -n "$convenience"; then
>  	  if test -n "$whole_archive_flag_spec"; then
>  	    eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
> +#   hack to remove redundant convenience libraries on darwin platform
> +#   (<kyrah gnu org>, original problem solution by <larsa gnu org>)
> +            case $host in
> +            *-*-darwin*)
> +              deplibs=`echo " $deplibs" | sed -e 's/[0-9A-Za-z_.][0-9A-Za-z_\/. -]*\.al//g'`
> +              ;;
> +            esac
>  	  else
>  	    gentop="$output_objdir/${outputname}x"
>  	    $show "${rm}r $gentop"