This commit adds support to distinguish between GCC and Clang to report
the appropriate compiler version. Usually Clang also disguises itself
as GCC for compatibility reasons, but these changes look for
Clang-specific definitions first to avoid that problem.
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
This commit adds a new platform architecture name for Arm CPUs running
in 64 bits mode ("aarch64"). The 32 bits name is left as "arm" to
maintain compatibility with existing code.
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
