E.7.3 Compiler command line variables

The following variables control the compiler command line:

CPU_SOURCE

The source CPU type is added as a define to the compiler command line. This is determined by the Makefile itself.

CPU_TARGET

The target CPU type is added as a define to the compiler command line. This is determined by the Makefile itself.

OS_SOURCE

What platform the makefile is used on. Detected automatically.

OS_TARGET

What platform will be compiled for. Added to the compiler command line with a -T prepended.