Tools: Select compiler based on arch version

[theotherjimmy]

Description

This allows users to use the approprate arm compiler with the -t ARM
switch. It picks Arm Compiler 5 for v6m and v7m and picks Arm Compiler 6
for v8m.

This also emits an error (but still builds) with -t ARMC6 and v6m and
v7m.

Pull request type

[ ] Fix
[ ] Refactor
[ ] New target
[x] Feature
[ ] Breaking change

[0xc0170]

archetecture typo

[jamesbeyond]

What's the reason for throwing this error when using ARM Compiler 6 with v6m or v7m target?

From the compiler's view, the message could be misleading. Becuase ARM compiler officially claims the support for architectures from Armv6m and all the later ones.

[theotherjimmy]

We don't test that combination.

[theotherjimmy]

@0xc0170 Fixed typo

[cmonr]

@theotherjimmy From Travis:

E           TypeError: unbound method cc_info() must be called with MockNotifier instance as first argument (got dict instance instead)

[theotherjimmy]

Weird. That should be a bound method.

[theotherjimmy]

Diff says enough.

[cmonr]

/morph build

[cmonr]

@ARMmbed/mbed-os-test
This will be needed to update our CI to start building against ARMc6. Will this change need to come into a versioned mbed-os, or is having it in master sufficient to move things forward?

[mbed-ci]

Build : SUCCESS

Build number : 2670
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7558/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[studavekar]

CI should not require changes, as armc6 is configured on the nodes.

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2303
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7558/

[mbed-ci]

Test : SUCCESS

Build number : 2409
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7558/2409

[cmonr]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 2673
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7558/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2306
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7558/

[mbed-ci]

Test : SUCCESS

Build number : 2411
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7558/2411