[Patch, libgfortran] PR 27740 Symbol versioning

[Steve Kargl]

On Fri, Apr 20, 2007 at 09:42:19AM +0300, Janne Blomqvist wrote:
> 
> Regtested on i686-pc-linux-gnu.
> 
> Ok for trunk?
> 
> -- 
> 2007-04-20  Janne Blomqvist  <jb@gcc.gnu.org>
> 
> 	PR fortran/27740
> 	* configure.ac: New test to determine if symbol versioning is
> 	supported.
> 	* Makefile.am: Use result of above test to add appropriate linker
> 	flags.
> 	* gfortran.map: New file.
> 	* configure: Regenerated.
> 	* Makefile.in: Regenerated.
> 	* config.h.in: Regenerated.


I applied the patch, ran aclocal, autoconf, and automake.  Ran
the new configure.  During the build I used tee to get a log
of everything written to the screen.  In the libgfortran configure
portion of the build, I see

checking whether symbol versioning is supported... yes

which of course is good.  The built compiler gives

                === gfortran Summary ===

# of expected passes            17379
# of expected failures          7
# of unsupported tests          74

on x86_64-*-freebsd.   What I can't determine is if symbol 
version is actually used. :-\  There is no mention of gfortran.map
is the log file.  I can find libgomp.map, libssp.map, and libgcc.map,
but no gfortran.map.  So, I guess I've done something wrong.