The -mcpu=cortex-a9 flag conflicts with the march=armv7-a flag.
Opted to keep mcpu=cortex-a9 as it is more specific and
allows GCC to perform better optimization.
The compiler is also changed to use soft-float ABI as it
was necessary to successfully build. Without it the application
appears to be built with soft-float ABI and it conflicts with
the previous setting which was built with hard-float ABI.
This may be related to: https://gitlab.kitware.com/cmake/cmake/-/issues/21173
Move the fpu settings across all cores so they are aligned.
Some cores did not have fpu set for ARMClang. I matched here both toolchains to set up
the fpu the same (Only exception is soft vs hard - that is separate issue I would not like to touch
in this series).
Some armasm flags are passed to the ASM whilst we actually use armclang to invoke it. This causes build failures as armclang is not compatible with armasm flags.
This commit passes the same flags to all tools in the chain.
The new function (mbed_set_cpu_core_definitions()) should always be
called as it has defintions needed by Mbed OS to work with that
particular MCU core.
mbed_set_cpu_core_options() should only be called if a third-party
toolchain file has not been used as it has compile options that can
cause conflicts.
Hugues Kamba
Martin Kojtal
Jamie Smith
Rajkumar Kanagaraj