Mbed-os: BLE builds cannot find mbedtls feature

[hasnainvirk]

Note: This is just a template, so feel free to use/remove the unnecessary things

Description

• Type: Bug
• Related issue: #5711
• Priority: Blocker

---

Bug

It seems the build system is failing to look for even omni-present features.

Target
NRF51_DK|??

Toolchain:
GCC_ARM|ARM|IAR

mbed-os:
master

Steps to reproduce
Try building any BLE example alongwith including mbedtls/aes.h

[0xc0170]

@pan- Have you experienced this? There's lorawan PR where had any example ble failure , as one of the headers in the paths included aes.h header file

[0xc0170]

I found the cause. The BLE examples ignore mbedtls ! This is causing a problem if there is a code in mbed OS that needs mbedtls (tls is not an optional component?).

This is known limitation, reported here https://github.com/ARMmbed/mbed-os-example-ble/issues/45

It has been for over 2 years.

@paul-szczepanek-arm would you know a reason for this as @pan- is away this week

[pan-]

@hasnainvirk This has been fixed in ble examples.