The environment variable CROSS must be set when using a cross-toolchain.
However it is counter intuitive to set a default value, considering
the toolchain required to build this architecture is well known.
It is especially weird when using a native toolchain and requiring to
unset this variable on the command line.
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Reviewed-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
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