Fix CROSS_COMPILE when using ccache #21
Merged
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If you use ccache, then the path to arm-none-eabi-gcc will be
/usr/lib/ccache/arm-none-eabi-gcc
The code to find CROSS_COMPILE already assumes that arm-none-eabi-gcc
is in your PATH. It also assumes that arm-none-eabi-objcopy and
arm-none-eabi-objdump are in the same place. This is not true: the
latter are both in /usr/bin (or somewhere else) in your PATH.
So strip off the path before using the variables. (It'd actually be simpler just to hard-code arm-none-eabi- )