Re: [Linux-ia64] GLIBC __deregister_frame_pointer compiler error

[Michael Madore <mmadore@turbolinux.com>]

Hi Jim,

> 	While trying to compile glibc on the 2.4 kernel, I get the error messages
> 	included below.  On 2.3.99, everything compiles fine.  Any ideas where to
> 	look to solve this?
> 
> Something must have changed.  Just changing the kernel shouldn't cause a
> previously working build to fail.

I first tried building with 2.4 kernel and header files.  When that
failed, I replaced the 2.4 header files and kernel with 2.3.99.  After
restarting the machine, I was able to compile glibc.
 
> However, there is a known problem here.  glibc has a list of routines exported
> from libgcc.  This list contains gcc internal EH routines.  This list of EH
> routines is now different because of the IA-64 specific EH support.  If
> you delete these EH routines from the glibc export list, or if you add the
> new IA-64 specific routines, then this problem will go away.  Either way,
> you are making an ABI change, so this may require recompiling all libraries
> and applications linked against glibc.
> 
> The specific file to look at is csu/Versions, and look at section
> "Exception handling support functions from libgcc".

I tried removing this section and recompiling, but I still get the same
error message.  Do I need to alter anything else?

> I have only seen this problem show up when trying to link against C++ shared
> libraries.  Oh, I remember why, whether the problem shows up or not depends
> on which order you link in libgcc and glibc.  I don't remember which order
> it was that failed, but you can experiment.

I think if you link libc first you get the unresolved symbols.
 
Mike Madore