"walt" <[EMAIL PROTECTED]> posted [EMAIL PROTECTED], excerpted below, on Sat, 30 Sep 2006 23:10:50 +0000:
> On Sat, 30 Sep 2006 22:22:21 +0000, Jack Cuyler wrote: > >> On Sat, 30 Sep 2006 12:35:54 -0500, Charles Kerr wrote: >> >>> September 30, 2006 - Pan 0.115: "Mrs. Kerr Says Remember the Tip Jar" >>> >>> This is "weekly" beta #26(!) of a full Pan redesign and rewrite in C++. >>> The quick turnaround time between each beta is to squash as many bugs >>> as possible before the pending 1.0 release. Feedback and bug reports >>> are very much encouraged. >>> >>> This is the last `big change' release before 1.0. The big news >>> this week is a series of optimizations that cut memory use in >>> big groups by about 60%! This is huge news for alt.binaries readers. >> >> This is the first time in a long time that I've had trouble compiling, but >> anyhoo, here's the error > <snip> > -mtune=k8 > > I don't know the answer, but that flag caught my attention. I would guess > that you added that flag yourself, am I right? > > Without knowing any details I'd suggest using a more pedestrian flag and > see if it helps. I see the problem has already been solved, but anyway, here's a bit more on that -mtune=k8: -mtune=k8 is for amd64 machines. -mtune says schedule as appropriate for the named arch, but says nothing about specific instructions. Thus, using the x86_64 compiler, it would output generic x86_64 instructions, no 3DNow or other amd-specific stuff, no sse3/pni or other em64t and later amd64 instructions. If you are compiling for /both/ amd64 and em64t machines, but want instruction ordering for amd64, use -mtune=k8. If OTOH you are compiling for ONLY AMD64, use -march=k8 (or the equivalents athlon64, opteron, athlon-fx), which will automatically default to the same -mtune unless you specify otherwise. For later k8s that include sse3 (aka pni), you'll probably want -msse3 as well. For em64t, you'll probably want -march=nocona, which includes -msse3 but not the -m3dnow of amd64. Again, if you are compiling for both, leave -march unspecified so it'll be generic, and optionally set -mtune=k8 or -mtune=nocona if you want scheduling optimized for one or the other. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman _______________________________________________ Pan-users mailing list Pan-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/pan-users
