On 16 Dez., 18:09, David Kirkby <david.kir...@onetel.net> wrote: > On 14 December 2010 05:30, leif <not.rea...@online.de> wrote: > > > (Btw., I failed in trying to compile some older versions of GCC with > > newer ones, e.g. 4.0.x with 4.3.3, 4.4.3 and 4.5.1.) > > -Leif > > At one point one could build gcc with a C compiler. Then it became > necessary to use gcc to build gcc. Now as you say, you sometimes need > specific versions of gcc. > > Since Sage is supposed to build with gcc >= 4.0.1, I've tried to build > 4.0.1 on Solaris SPARC to test this, but it actually failed, as I was > unable to build gcc 4.0..1 (I can't recall what versions of gcc I used > when attempting such a build). > > GCC is a useful compiler, but it would be useful if one only needed a > C compiler in order to compile it. I don't believe the compilers from > Sun ((Oracle), HP or IBM can build recent version of gcc.
Well, the problem appears more to be building older versions with newer ones than the other way around, since newer versions tend to be more strict, standards have changed, and nobody maintains very old versions. You cannot expect compiler developers to work around bugs in obsolete software... By changing the source code I got a bit further in compiling 4.0.x or 4.1.x (with newer gccs), but didn't really pursue that. (It might be easier on systems with also "outdated" C libraries etc.) -Leif P.S.: I would be rather surprised if Sun's cc did *not* build recent versions of GCC. Unless the compilers are very old (pre-C90), this should IMHO work (since it is to some extent aimed at), in contrast to the above situation which is less likely or reasonable. -- 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
