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George Staikos wrote:
>   This linker flag, -Wl,--as-needed, is causing some rather major
> problems for Kst build.

It's a flag turned on only if you give configure the option=20
=2D-enable-new-ldtags. It's like --enable-final, and we all know there are=
=20
programs that don't work with --enable-final.

> If it's included, at least with my SuSE 9.2=20
> install, it completely botches the GSL link and causes our plugins to
> crash when running. The only way to remove the flag (which makes it
> link properly), is to remove $(all_libraries), but that breaks compile
> on other platforms.  Does anyone know if there's a problem with SuSE
> 9.2's ld or gsl packages?  Or can we come up with a solution to
> optionally remove that flag?

See above.

But the problem you're reporting doesn't make sense. The only effect=20
=2D-as-needed has is remove unnecessary libraries from the ELF binaries.=20
Whatever is needed will be pulled in normally. This indicates the problem=20
is something else.

>   The details of the problem are that with the flag, when I link
> gslcblas and gsl into a plugin, it seems to drop gslcblas for no
> apparent reason.

Either it's an ld bug, or gslcblas isn't needed.

> It's definitely needed though.  The plugin crashes=20
> due to missing symbol when running it without gslcblas linked in.

The linker adds the NEEDED symbol only for what the resulting binary=20
requires *directly*. If your plugin doesn't need anything from gslcblas,=20
it won't be listed in the NEEDED section. It doesn't matter if a library=20
you use needs stuff from it --- the dependency isn't direct.

What probably is wrong is gsl and gslcblas themselves. I have seen many=20
libraries that fail to link to their required dependencies, and in turn=20
expect the final program to do that.

=2D-=20
  Thiago Macieira  -  thiago (AT) macieira (DOT) info
    PGP/GPG: 0x6EF45358; fingerprint:
    E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358

3. Ac seo woruld wear=F0 geborod, sw=E1 se Scieppend cwea=F0 "Gewurde Unix"=
 and=20
wundor fremede and him "Unix" genemned, =FE=E6t is se rihtendgesamnung.

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