Help needed porting eclib (#10993)
Jeroen Demeyer
have a look at ticket #10993? It's about upgrading the eclib spkg, but
there are some portability problems.
Thanks,
Jeroen.
John Cremona
Specifically: in the Makefile the option --as-needed is passed from
gcc to ld but apparently OpenSolaris's ld does not recognise that
option. I looked at the documentaion for Solaris ld (found at
http://www.opensolarisforum.org/man/man1/ld.html) and could not see an
equivalent option. It would be easy to make sure that this option was
only added if the OS (as returned by uname) was not ... whatever uname
returns on a Solaris system -- which is what?
http://trac.sagemath.org/sage_trac/ticket/9643 suggests that there is
not a unique answer.
John
>
> Thanks,
> Jeroen.
>
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Julien Puydt
> Specifically: in the Makefile the option --as-needed is passed from
> gcc to ld
That switch is written as-is in the Makefile? Or does it come from
elsewhere?
Snark on #sagemath
John Cremona
The Makefiles in the four subdirectories (into which the source is
divided) contain the (new) lines
SONAME=$(LIBBASE).so.0
where LIBBASE is something different for each subdirectory. Then in
the top-level Makefile, the line
SO_OPTS = -fPIC --shared
is changed to
SO_OPTS = -fPIC --shared -Wl,--as-needed
and in the top-level Makefile.dynamic,
$(SO_LIBNAME): $(A_LIBNAME)
$(CXX) $(SO_OPTS) $(A_LIBNAME) $(OBJS) -o $(SO_LIBNAME)
$(NTLLFLAGS) $(LIBFLAGS)
was changed to
(SO_LIBNAME): $(A_LIBNAME)
$(CXX) $(SO_OPTS) -Wl,-soname,$(SONAME) $(A_LIBNAME) $(OBJS) -o
$(SO_LIBNAME) $(NTLLFLAGS) $(LIBFLAGS)
These changes were made by the Debian guy, but apparently cause the
build to fail on the OpenSolaris machine Hawk. As far as I am
concerned everything worked before these changes and after (on my
linux machines) but if someone who sounds as if he knows what he is
talking about says "this is the right way to do it" I tend to believe
them provided that the change still works for me.
At the time this change was made to eclib "upstream" (in June 2011) I
did ask David Kirby whether this looked ok for Solaris, but he did not
reply, and it is only since December that I have trying to get the
eclib version included in Sage upgraded -- not for this technical
change of course, but for genuine reasons.
John
> Snark on #sagemath
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