On Sep 11, 1:31 am, kcrisman <kcris...@gmail.com> wrote: > > Buthttp://r.research.att.com/tools/#gcc42provideshttp://r.research.att.c... > > which will do the installation of "10.4u", whatever this means, > > Yeah, I'm not sure what this is either, > > > Apple's SDK with gcc42 and gfortran42. > > > So yes, it's the missing gcc42 for MacOSX 10.4, u(nstable?) > > IMHO for that few 10.4 systems that are left around, it's good enough > > - it's certainly no worse than using some rather > > old (4.0) version of gcc... > > Do you think it will be possible to install this side-by-side with the > Xcode? I'm just scared that I'll hose my compiler by downloading > this :( > yes, I think it is jolly possible; it's just a tar file, so you can have a look what you get. As far as I can see no Xcode files get overwritten.
> > > > > > > but I would be very > > > happy if that were the case. But ADC says "This release provides > > > additional GCC and LLVM compiler options, general bug fixes, and must > > > be installed on Leopard, Mac OS X 10.5.0 and higher." And in the > > > documentation it says "Xcode 3.1.2 is compatible with Intel and > > > PowerPC Macs running Mac OS X 10.5 Leopard." You can develop for > > > Tiger with it (even for Panther!) but can't actually run it > > > (apparently) on Tiger. Also, one apparently can't even try, as only > > > Leopard supports having multiple Xcode installations. > > > > :( > > > > > and ships gcc 4.2 as well as gcc 4.0. > > > > Just on the off chance you've tried this successfully... Is it > > > relatively trivial to get it to use gcc 4.2 only? I would be > > > comfortable with requiring *developers* to have a later Xcode > > > It's trivial (on 10.5, but same should certainly apply to 10.4u). > > E.g one can change the links in /usr/bin manually (i.e. gcc there is a > > link to gcc4.0, so you change it to gcc4.2, and the same for cc and g+ > > +). > > Ok, you've already lost me at "change the links in /usr/bin manually", > though maybe I can figure it out. on the Xcode version I have (3.1.2) gcc, etc are just symbolic links: $ ls -l /usr/bin/gcc* lrwxr-xr-x 1 root wheel 7 Sep 10 17:50 /usr/bin/gcc -> gcc-4.2 -rwxr-xr-x 1 root wheel 93088 Feb 5 2009 /usr/bin/gcc-4.0 -rwxr-xr-x 1 root wheel 105680 Jul 7 2009 /usr/bin/gcc-4.2 $ ls -l /usr/bin/*fort* lrwxr-xr-x 1 root wheel 12 Sep 10 17:55 /usr/bin/gfortran -> gfortran-4.2 -rwxr-xr-x 1 root wheel 96136 Jan 26 2010 /usr/bin/gfortran-4.2 -rwxr-xr-x 1 root wheel 519200 Jan 26 2010 /usr/bin/i686-apple- darwin9-gfortran-4.2.1 -rwxr-xr-x 1 root wheel 523296 Jan 26 2010 /usr/bin/powerpc-apple- darwin9-gfortran-4.2.1 In order to get this, I did cd /usr/bin sudo ln -sf gcc-4.2 gcc sudo ln -sf gcc-4.2 cc sudo ln -sf g++-4.2 g++ sudo ln -sf gfortran-4.2 gfortran That's it. (I don't know how to set this up in Xcode's GUI, but it's not needed for Sage). There are other ways: e.g. you can put these links to gcc-4.2 etc to another directory that comes ahead of /usr/bin in your PATH. Then, as long as your PATH is set this way, calling gcc would call gcc-4.2 In order to switch back to gcc4.0 I can do cd /usr/bin sudo ln -sf gcc-4.0 gcc sudo ln -sf gcc-4.0 cc sudo ln -sf g++-4.0 g++ Well, if you managed to nuke your Xcode you could always reinstall... > But more practically, would I have > to do some variable exporting before doing Sage? Or would this alone > make everything go solidly? > What about for the Fortran part? the above fixes it. I noticed one minor problem with this gfortran: one needs to specify the location of libgfortran.a when using it as a linker, but that's also trivially done. > > Or, again, maybe we could provide the 4.2 binary and the gfortran > binary directly inside Sage, and use that for all gcc and cc and g++ > and whatever else there is that I don't know about... > > Anyway, changing how we support a particular platform probably > deserves more discussion than its received on this thread, so for now > I'll wait to see if it worked for you to use this toolkit to build > Sage successfully (e.g. 4.6.alpha0) and then maybe I'll take a leap on > *one* of my 10.4 boxes to see if it works. Sure. I'll keep you posted on this. Dima > > - kcrisman -- 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
