On Tue, Aug 11, 2009 at 7:38 PM, Robert Bradshaw<rober...@math.washington.edu> wrote: > > On Aug 11, 2009, at 1:42 PM, Dr. David Kirkby wrote: > >> I gather that what gcc works on OS X depends on many things. Can >> anyone >> be precise about exactly what works and what does not? I can do some >> semi-sensible testing in a configure script if I knew what was wanted, >> but I don't. >> >> I have at this point put a test in for gcc version >> >> minimum_gcc_version="4.0.1" >> >> # Exit if the version of GCC is known to be too old >> AS_VERSION_COMPARE([$GCC_VERSION], [$minimum_gcc_version],[ >> AC_MSG_WARN([GCC $GCC_VERSION is too old and can not build >> AC_PACKAGE_NAME. Please use]) >> AC_MSG_WARN([a gcc of at least $minimum_gcc_version. )]) >> AC_MSG_ERROR([Exiting due to the use of a version of GCC that >> is too old]) >> ], [],[]) >> >> >> But from what I gather, having 4.0.1 on OS X is no guarantee of >> success. > > IIRC, 4.0.1 is the latest (default) compiler that ships with OS X, > and it seems to work for a lot of us.
Where were some reports you may have missed oon sage-*f many default builds of 4.0.1 for OS X *not* working if one upgrades to the latest version of OS X. One needs a relatively recent version of XCode. > >> The best thing to do would be to check for particular compiler >> features, >> rather than versions, as that is more portable. But from a practical >> point of view, I doubt anyone know what feature is missing in older >> versions on OS X this is needed. > > > The "missing features" is 4.0.0 (vs 4.0.1) are a pile of bugfixes. > Sage exposes a lot of bugs in 4.0.0 but compiles fine with 4.0.1. > > IIRC, the 3.4+ was for sufficient c99 support, but someone else > probably knows better. Yes, it was. But when Robert Miller included Stoll's ratpoints spkg, sage suddenly no longer built with 3.4. William --~--~---------~--~----~------------~-------~--~----~ 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 URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
