This addresses the issue where building tests via test.py always triggered
a clean build. This is because the mbed_config.h file was being deleted from
the shared OS build to ensure that the correct config was always being
used. However, this contanstly triggered a rebuild of the OS since the
config file was not present.
Due to the shared build, having multiple app configurations that could
override the OS settings is not possible. For this reason, we now ignore
app config files unless explicitly set via the command line option
'--app-config'. Though there will now be two mbed_config.h files in the
include path of the build, it shouldn't matter since the contents will be
the same.
*Changes*
- Parallel export
- mbed-os tests added
- specified release version (default to 5)
- default tests AND targets dependent on specified release version
uVision4 is no longer maintained by the Keil team (support was stopped
long time ago).
This is why we need to make the uvision exporter able to generate uVision5
projects by default (which is based on software packs).
Also, adding note that the uvision4 exporter is now deprecated and will be
removed in the future.
Simplicity Studio exporter doesnt really support header files in the root directory (looking at you, mbed_config.h), so this is a workaround for that issue.
The previous way of finding group names found the encompassing directory of each file. If the project is exported from the online compiler, this resulted in temporary folder names like tmpyKKWv_ showing up as group names.
I propose defaulting to the project name if the file is in the project root.
#2613 should be merged first
Using test_api, I found that the test names were dependent on where mbed-os (if that is the root) is stored on disk if you provide anything other than '.' as the root directory.
This would change names like:
```
repos-mbed-os-example-blinky-mbed-os-features-storage-feature_storage-tests-cfstore-example3
```
to
```
features-storage-feature_storage-tests-cfstore-example3
```
The shared `prepare_toolchain` and `scan_resources` functions in build_api
expect a list, not a string. This is different from the
toolchain.scan_resources function. Now the functions are being used
correctly within the `find_tests` function in test_api