Bug 834052 – arm-none-eabi-* compiled with rmprofile fails to compile for blackmagic debugger

• Product: Gentoo Linux
• Status: RESOLVED WORKSFORME

[Description Penguin 2022-02-25 22:06:28 UTC]

This may or may not be a bug with crossdev. It could just be a configuration issue. I created arm-none-eabi-* toolchain with the instructions found here: 

https://wiki.gentoo.org/wiki/How_to_build_a_toolchain_for_arm_cortex-m_and_cortex-r

The only change to those instructions I made was replacing the word "unknown" with "none" to make the installation compatible with the makefiles I already had.

As for the actual bug, the toolchain fails to compile this project: https://github.com/blackmagic-debug/blackmagic

The compilation output is here: https://dpaste.com/2LWXU22F7

Steps to reproduce:
# first run all instructions from above wiki to install the toolchain, then
git clone https://github.com/blackmagic-debug/blackmagic.git
cd blackmagic
make

I know the issue has something to do with the toolchain because I downloaded the toolchain from the arm website and compiled with that and it worked.I did this with the following command:
CROSS_COMPILE="/path/to/downloaded/arm/toolchain/bin/arm-none-eabi-" make -j20

This is the first time I've submitted a bug here. Please let me know if I can make the submission any better.

[Comment 1 Sam James 2022-02-25 22:22:38 UTC]

Could you attach the failed log here for posterity etc?

Also, is sys-libs/newlib[nano] installed? (I know you have USE=nano in your instructions, but just checking).

[Comment 2 Sam James 2022-02-25 22:24:18 UTC]

(In reply to Sam James from comment #1)
> Could you attach the failed log here for posterity etc?
> 
> Also, is sys-libs/newlib[nano] installed? (I know you have USE=nano in your
> instructions, but just checking).

Oh, and what version of newlib?

[Comment 3 Penguin 2022-02-25 22:34:19 UTC]

Created attachment 765832 [details]
failed compilation output

I've attached a txt file with the failed compilation output. 

Also, my sys-libs/newlib does not have the "nano" use flag set. I will try enabling that.

My cross-arm-none-eabi/newlib is version 4.2.0.20211231. My sys-libs/newlib is version 9999 0.o

[Comment 4 Penguin 2024-08-31 19:39:15 UTC]

It's been a while, but this bug was resolved at some point. Black magic firmware builds correctly using this toolchain now.