On 03/07/2011 14:56, Alexander Best wrote: > "native" doesn't get handled by bsd.cpu.mk at all! it gets passed to gcc > directly and gcc choses -m{tune,arch} on it's own. > > don't add -march=* directly to CFLAGS. this is bound to go wrong at some > point. use CPUTYPE to set the cpu and CFLAGS for -O*, -pipe, etc. > > also please keep in mind that the optimisations that can be achieved by > finetuning make.conf are rather minor. some people think that with > cflags and cpu juju they can boost the OS. i don't believe that's true. the > chances are much greater that you're adding a problematic switch and end up > with binaries during installworld that segfault. so it's not really worth > getting into this kinda trouble just for the sake of optimisation. > > a simple > > CPUTYPE ?= native > COPTFLAGS = -O0 -pipe > CFLAGS = -O2 -pipe > > should be close to perfekt.;) Does any of this pertain to clang? Doug -- Nothin' ever doesn't change, but nothin' changes much. -- OK Go Breadth of IT experience, and depth of knowledge in the DNS. Yours for the right price. :) http://SupersetSolutions.com/Received on Mon Mar 07 2011 - 23:20:33 UTC
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