On Thu, Aug 8, 2013 at 8:04 PM, Channagoud <ckadabi@xxxxxxxxxxxxxx> wrote: > Hi, > I wanted to understand the difference of using march vs mcpu as argument to > gcc. > I am compiling my code for a cortex-A8 CPU, what would be better to use: > > -mcpu=cortex-a8 or -march=armv7-a GCC's Hardware Models and Configurations pages (http://gcc.gnu.org/onlinedocs/gcc/Submodel-Options.html#Submodel-Options) discusses this in some detail. For ARM (http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html#ARM-Options): -march=name This specifies the name of the target ARM architecture. -mcpu=name This specifies the name of the target ARM processor. There's also an -mtune which might be of interest.
