tools-exporters! - Move to Toolchain-polymorphic makefiles

[theotherjimmy]

This creates three new exporters:

• make_gcc_arm (new name for old exporter)
• make_armc5
• make_iar

There is also a bunch of consolodation work that significantly reduces the difference between the python build system and the makefiles. Further, I also significantly reduced the number of extrainious templates by allowing templates resolution to fall back from the target name, to the extra-labels, and finally to the toolchain-specific makefile.

This PR must be merged after #2245 It was merged!

[theotherjimmy]

Actual diff here: theotherjimmy/mbed@exporter-refactor...theotherjimmy:gcc-arm-consolidation

[sg-]

@theotherjimmy how about a rebase?

[sg-]

🎉

[theotherjimmy]

re-re-based.

[sg-]

/morph test

[sg-]

/morph export-build

[mbed-bot]

Result: FAILURE

Your command has finished executing! Here's what you wrote!

/morph export-build

[mbed-bot]

Result: SUCCESS

Your command has finished executing! Here's what you wrote!

/morph test

Output

mbed Build Number: 841

All builds and test passed!

[sg-]

Just a handful of IAR failures left, not a regression but probably missing definitions or simple fix-ups for a future patch

15:53:00 Failed: 
15:53:00   * DISCO_F469NI::iar  MBED_BLINKY
15:53:00   * EFM32PG_STK3401::iar   MBED_BLINKY
15:53:00   * NUCLEO_F410RB::iar MBED_BLINKY
15:53:00   * NUCLEO_F767ZI::iar MBED_BLINKY
15:53:00   * NUCLEO_L073RZ::iar MBED_BLINKY
15:53:00   * NUCLEO_L432KC::iar MBED_BLINKY

[ohagendorf]

After submitting your PR three new gcc_arm templates appeared:
gcc_arm_disco_f769ni.tmpl
gcc_arm_mtm_mtconnect04S.tmpl
gcc_arm_nucleo_f303ke.tmpl

May you have a look at these too, please.

[theotherjimmy]

• gcc_arm_disco_f769ni.tmpl: a direct copy of the base template with no modification. It will just fall back to the base template.
• gcc_arm_mtm_mtconnect04S.tmpl: A srec_cat user and the scan resources will pick up a .hex file. This will also fall back to the base template, and have the hex file merging as part of the all target
• gcc_arm_nucleo_f303ke.tmpl: Same as the disco_f769ni

These will be taken care of without the need for extra templates. Thanks for the heads up @ohagendorf

[ohagendorf]

But they can be deleted to clean up the export folder ...

[theotherjimmy]

OH did I not delete them? I'll get right on that.

[theotherjimmy]

@ohagendorf, I did a rebase to remove the templates you mentioned in the appropriate commits.