Re: Libtool doesn't invoke gcc properly [on Solaris 10]

[Ralf Wildenhues]

Hi Jeremy,

* Jeremy Teo wrote on Wed, Jun 29, 2005 at 01:06:34PM CEST:
> 
> I came across this error with regards to the generated libtool for Mono 
> 1.1.8.1
> 
> Version of libtool is as shown below:
> 
> ltmain.sh (GNU libtool) 1.5.14 (1.1220.2.195 2005/02/12 12:12:33)

Hmm.  The patch you provide does not fit libtool.m4 from 1.5.14 exactly.
Did mono patch the libtool.m4 they ship?

> The generated libtool invokes gcc with the flag "-shared" in order to
> generate shared libraries.
> 
> On Solaris, the linker used is the system linker, "ld". The proper
> flag to pass to gcc is "Wl,-G".

That's weird.  How does the failure look like without the patch?
(Maybe [1] is an effect of this?)

Which GCC version?  Note right around the first hunk of your patch
Libtool explicitly distinguishes between gcc-2.7 (for which -G seemed
necessary) and other GCC versions.

Note the second hunk of your patch applies to the GNU ld case.  That
looks wrong to me.

> I've patched my libtool.m4 accordingly, and the patch is included
> below. I appreciate any feedback if what I've done is correct and
> portable.

Can't decide that yet.  Even if it turns out to work fine on your
system, there are a lot of different combinations (Solaris version, GCC
version, linker used) to test for potential breakage.  It would be good
to know exactly what caused our code to break.

Please also note that Libtool 1.5.18 contains a few Solaris-related
fixes.  They /should/ be independent of this issue, at a glance, but it
could help to make sure.

Regards,
Ralf

[1] http://lists.gnu.org/archive/html/libtool/2005-06/msg00204.html