On Thu, Oct 25, 2012 at 05:55:22PM +0800, Dima Pasechnik wrote: > On Thu, Oct 25, 2012 at 04:33:19PM +0800, Gordon Royle wrote: > > However the system is a new Red Hat Enterprise Linux distribution so I am > > surprised it doesn't come with the bits it needs. When I compiled from > > scratch instead (configure; make;), no complaints were raised, but perhaps > > it made only the 64-bit version ?? > > I suppose it did. It's not easy to cross-compile things (i.e. build > executables for platforms different from what you do the building), you > need to jump some hoops. And still, running such an executable is a > different story (e.g. you can cross-compile for Windows or an iPhone on > Linux - but running the resulting executables is a completely different > story).
Yes, a simple './configure; make' will compile a 64 bit version on your system. Compiling a 32 bit executable for GAP is also easy if your system is set up for it. You need 32 bit header files for the C library and maybe the readline and ncurses libraries, at least the latter are rarely installed in default Linux installations. Then you can say './configure ABI=32; make'. I would not call this "cross-compilation", it makes complete sense to compile and use a 32 bit version of GAP on 64 bit systems. There are some comments on this in: http://www.math.rwth-aachen.de/~Frank.Luebeck/gap/rsync/index.html#32versus64 Best regards, Frank -- /// Dr. Frank Lübeck, Lehrstuhl D für Mathematik, Templergraben 64, /// \\\ 52062 Aachen, Germany \\\ /// E-mail: frank.lueb...@math.rwth-aachen.de /// \\\ WWW: http://www.math.rwth-aachen.de/~Frank.Luebeck/ \\\ _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
