Hi, I'm a bit confused about how CFLAGS related to ARM's iwmmxt instruction set extensions are handled. On x86 to enable SSEx instructions, one would do something like -march=... -msse3, but on ARM I must do something like -march=iwmmxt (where I'd have expected -march=armv7 -miwmmxt). What flags would I use to optimize code for armv7 while enabling iwmmxt instructions? -march=armv7 -mcpu=iwmmxt? Also, do I need to do anything with -mabi=iwmmxt? I think not, but.. Thanks, Matt http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html