AES example in SDK version 17.0.0 does not compile out of the box

[Andrew Waterhouse]

Hello.

Trying to compile the AES CBC MAC example out of the box, we get the ferror below.

Your help would be appreciated.

Many thanks,

Andrew

Building ‘nrf_crypto_aes_cbc_mac_pca10040’ from solution ‘nrf_crypto_aes_cbc_mac_pca10040’ in configuration ‘Release’

....

Linking nrf_crypto_aes_cbc_mac_pca10040.elf
    cannot find ../../../../../../../../external/micro-ecc/nrf52hf_armgcc/armgcc/micro_ecc_lib_nrf52.a: No such file or directory
Build failed

[Andrew Waterhouse]

Hello.

The micro-ecc problem has resurfaced at linker level now.

What I didn't realise when I got the clean compile above was that mcro-ecc was disabled. When I enable it and disable all the other backends, it runs trhough to the linking stage but I get the error below which from what I can see means there is a  floating point clash between the snRF2K target (supporting VFP register usage) and the library .a file you provided (the one I have been unable to compile) which does not.

Can you please advise how to resolve this ?

Regards,

Andrew

++++++++++++++++++++++++

Here is the error:

Building ‘nrf_crypto_aes_cbc_mac_pca10040’ from solution ‘nrf_crypto_aes_cbc_mac_pca10040’ in configuration ‘Release’
  Linking nrf_crypto_aes_cbc_mac_pca10040.elf
    Output/Release/Exe/nrf_crypto_aes_cbc_mac_pca10040.elf uses VFP register arguments, ../../../../../../../../external/micro-ecc/nrf52nf_armgcc/armgcc/micro_ecc_lib_nrf52.a(uECC.c.o) does not
    failed to merge target specific data of file ../../../../../../../../external/micro-ecc/nrf52nf_armgcc/armgcc/micro_ecc_lib_nrf52.a(uECC.c.o)
Build failed

[RMV]

Did you ever get this issue resolved?

FWIW, I think it is due to inconsistent use of the floating point ABI between the library build and your project build.