compiling kernel: -mcpu=cortex-a15 vs -march=armv7ve?

Offline Aid Farhan Maarof over 6 years ago

I'm compiling an Android kernel for my Xperia Z using Linaro GCC 4.9. My question is, which option gives better optimization -mcpu=cortex-a15 or -march=armv7ve? Or do they give the same results?

Top replies

Offline chinatiger over 6 years ago +1 verified

-mcpu tells it to generate code SPECIFICALLY for a certain chip. -mcpu implies -mtune, but will also cause the compiler to emit instructions specific to the target processor. This does not guarantee binary...

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compiling kernel: -mcpu=cortex-a15 vs -march=armv7ve?

Top replies

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