GCC ARM Embedded Toolchain used for testing and verification

[Alex]

Hi

in the release notes of the SDK14.2 the following is written

The following toolchains/devices have been used for testing and
verification:
- ARM: MDK-ARM version 5.18a
- GCC: GCC ARM Embedded 4.9 2015q3
- IAR: IAR Workbench 7.80.4
- SES: SES 3.30
- Linux: Ubuntu 17.04, Kernel 4.10.0.
- Jlink: 6.20d

The latest version of the GCC ARM Embedded toolchain is 7-2017q4.

It is even not possible anymore to download version 4.9 from the ARM developer page.

Why is this old version used by Nordic?

[Håkon Alseth]

Hi,

 

We are moving to 6-2017-q2-update in SDK 15.

There's a critical bug wrt. LTO in 2017-Q4 (GCC 7) which blocked us from taking the latest upstream arm-none-eabi:

https://bugs.launchpad.net/gcc-arm-embedded/+bug/1747966

 

Technically we do test with later GCC versions, as Segger Embedded Studio v3.30 (tested in SDK v14.2) uses this version:

GCC/BINUTILS: Built using the GNU ARM Embedded Toolchain version 6-2017-q2-update source distribution

 

Best regards,

Håkon