On Mon, Jan 30, 2012 at 10:04 AM, John H Palmieri <jhpalmier...@gmail.com> wrote: > > On Tuesday, January 17, 2012 1:59:45 PM UTC-8, William wrote: >> >> On Tue, Jan 17, 2012 at 1:39 PM, William Stein <wst...@gmail.com> wrote: >> >> > On Mon, Jan 16, 2012 at 3:43 PM, William Stein <wst...@gmail.com> wrote: >> >> On Mon, Jan 16, 2012 at 9:26 AM, John H Palmieri <jhpalm...@gmail.com> >> >> wrote: >> >>> >> >>> >> >>> On Monday, January 16, 2012 7:42:49 AM UTC-8, William wrote: >> >>>> >> >>>> Hi, >> >>>> >> >>>> A major blocker for Sage-5.0 is supporting OS X (version 10.7 -- the >> >>>> version that has been out for months now). >> >>>> >> >>>> Fortunately, it is now "relatively easy" to build sage-5.0.beta1 on >> >>>> OS >> >>>> X 10.7 with XCode 4.x, and have it start up. >> >> >> >> After building Sage on OS X 10.7, "make test" did this: >> > >> > For the record, running tests with "sage -t devel/sage/sage" yields >> > hundred(s) of failing files: >> > >> > http://wstein.org/home/wstein/tmp/test-sage-5.0.beta1-osx10.7.txt >> > >> > It could be that most of these boil down to some code at the core of >> > PARI (the bezout function) being miscompiled. >> > >> > There is a discussion about this from August 2011 here: >> > >> > http://pari.math.u-bordeaux.fr/archives/pari-dev-1108/msg00000.html >> > >> > It unfortunately appears based on the mailing list -- and searching >> > through the ** 5 months ** since then -- that nothing at all was done >> > to try to fix the problem, even though I had setup access to 10.7 for >> > the Pari developers. Probably the main problem is that the machine I >> > setup -- sqrt5.math.washington.edu -- is on the CS network, and for >> > some reason it keeps getting kicked off. >> > >> > This really sucks. Maybe I can rewrite their bezout to get around >> > the problem. >> >> Another option is to turn of optimization (-O0) when building part of >> PARI under XCode 4.x, since the problem is bad compiler optimization. >> I just tried, export SAGE_DEBUG="yes", then building PARI with >> SAGE_CHECK="yes", and I get: "The PARI self-tests all passed". >> >> So something based on optimization flags is the workaround I'll pursue >> for now. Something that is slightly slower than optimal is way >> better than infinitely slower. > > > I've been trying to build Sage with OS X Lion over the past few days, and > things are going pretty well: there are a few doctest failures, but I think > most are numerical noise. Most spkgs build just fine, but because of bugs > in Apple's compiler, a few -- pari, gsl, symmetrica -- have problems unless > we modify them. So I propose the following modifications in the > spkg-install scripts for those packages: > > - check to see if running Lion, and if so > - check to see if /usr/bin/gcc-4.2 exists. this might be available from an > older installation of XCode, or it can be installed using the gcc package > Georg posted a link to: http://r.research.att.com/tools/. If it's there, > set CC=gcc-4.2.
Just to clarify, does gcc-4.2 *not* come with the latex XCode 4.x, but it came with earlier XCode 4.x's? I have gcc-4.2 on my laptop, and I've never installed anything but XCode 4.x on it. Just curious. > - otherwise, turn off optimization (compile with -O0) for those packages. > This seems to avoid the bugs, although it will slow down those specific > pieces of code. It's probably better to require gcc-4.2 for now if (1) it work, and (2) is not that hard to install. -- William > > Opinions? > > We also seem to need to delete the file > SAGE_ROOT/local/lib/python/config/libpython2.7.a. Any reasons why doing > this is a bad idea? (See > <http://trac.sagemath.org/sage_trac/ticket/11967>.) > > There are still a few remaining problems with OS X Lion, like self-tests for > cvxopt, but maybe someone can figure out how to fix them. > > See <http://trac.sagemath.org/sage_trac/ticket/11881> for the trac > metaticket about building Sage on Lion. > > -- > John > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
