maemo.org - Talk - View Single Post - Best CFLAGS for N900?

	javispedro	2011-04-03 , 18:53
	Posts: 2,355 \| Thanked: 5,249 times \| Joined on Jan 2009 @ Barcelona	#6

Originally Posted by jj0

I build a lotta stuff on the N900 when I don't have access to the PC, or it won't build in scratchbox...

If you are using the SDK repository compiler they have the same defaults IIRC.

Originally Posted by jj0

So wouldnd't -O3 be better?

Not necessarily, it will probably slow things down because of memory pressure. As usual, the answer is: don't assume it is, and benchmark.

Originally Posted by jj0

-fmessage-length=0 -ftree-vectorize -Os -pipe

tree-vectorize does virtually nothing with the GCC version we have, and message-length does not change anything in the resulting binary...

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