On Friday 09 April 2004 2:15 pm, elijah wright wrote: > > For the C programming language, this means the following > > compilation parameters should be used: > > > > CC = gcc > > CFLAGS = -O2 -g -Wall > > > > though -O3 is probably OK in most cases. You should keep the > > optimizations options as conservative as possible, unless you > > really > > in my experience compiling stuff with -O3 just means that people on > other architectures (where GCC may do odd things) will eventually > probably file bugs on your package that can be fixed by moving back > to -O2. > > I've seen this happen on alpha repeatedly, and i seem to recall that > sparc and powerpc occasionally have this issue as well.
Not to disagree--sometimes the optimizations -O3 does have problems on some architectures either because it exposes bugs in the software or because of compiler problems--but it would be more helpful in general to find why -O3 is causing a problem and either 1) fix the offending code if it's the packages problem, or 2) file a bug against GCC so that it can actually get fixed instead of just worked around and ignored. =) Granted, if you're not willing to go through the extra effort to do that, -O2 might be a better choice... -- Wesley J. Landaker <[EMAIL PROTECTED]> OpenPGP FP: 4135 2A3B 4726 ACC5 9094 0097 F0A9 8A4C 4CD6 E3D2
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