ARM Compile Options - Raspberry Pi System Software Reference - page 102

Appendix d

ARM Compile Options

For ARM platform compiles, the following site makes compiler option recommendations:
http://elinux.org/RPi_Software .
The site states the following:

gcc compiler flags that produce the most optimal code for the
Raspberry Pi are as follows:

• The

Ofast - mfpu=vfp - mfloat - abi=hard - march=armv6zk
- mtune=arm1176jzf - s

• -

Ofast may produce compile errors. In these
cases, -O3 or -O2 should be used instead.

• For some programs, -

-mcpu=arm1176jzf-s can be used in place of -march=armv6zk
-mtune=arm1176jzf-s .

•