Author: Tord Romstad
Date: 13:00:07 12/19/05
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On December 19, 2005 at 14:58:12, Andreas Guettinger wrote: >On December 19, 2005 at 11:36:50, Tord Romstad wrote: > >>Which compiler flags do you use? I add "-mcpu=G5 -mpowerpc64" >>to the compiler flags when compiling a G5 optimised Glaurung >>executable. > >Additional flags would be "-mtune=G5" and "-fast" which turns on some PowerPc >specific optimizations. I was about to say that "-mtune" was a deprecated synonym for "-mcpu", but just before posting I checked, and found to my surprise that the opposite is true. In other words, "-mcpu=G5" and "-mtune=G5" should have exactly the same effect, but it is probably better to get used to using "-mtune". I don't use "-fast", because it enforces "-O3", which is slower than "-O2" for my program (as well as most other programs I have tried). Tord
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