g++: error: unrecognized command line option ‘-m32’ on ARM about warble

[scaryghost]

Pull in the commit referenced in this issue (f5d3f054) and build with NO_MULTILIB=1.

[scaryghost]

Both projects build without any issues on a rpi3. What is the output of uname -a?

[zzvara]

Linux linaro-alip 3.18-ifc6601-v0.5 #1 SMP PREEMPT Tue Dec 12 18:40:57 IST 2017 aarch64 GNU/Linux

Tried to install gcc-multilib and g++-multilib, but did not find any repo that would provide the binaries for arm other than Ubuntu. Unfortunately I'm not experienced on this topic. My guess is that multilib is generally not required on aarch64.

(The project builds without error if I cut the -m flag. The final goal would be to make pip install metawear work., but Warble fails due to this error.)

Do you have any suggestions?

[scaryghost]

You can force the build to target ARM with the MACHINE option:

make MACHINE=arm

In the grand scheme of things, the build config simply needs to be updated to include aarch64 as a ARM cpu target.

Out of curiosity, what hardware you building the C code on?

[zzvara]

I have also tried that, but the same error raised, with -marm being unrecognized.

This is an Inforce 6601 SoM.

The multilib is not available on this ARM Linux distribution, so -m flag will not work. Can we expect a fix for this?

[zzvara]

At the end of the next week we will try it out and report back as soon as possible.

Thanks!

[zzvara]

I have received word that in the meantime my colleague removed the flag -m32 from the metawear project's C++ dependency, then built with pip install. Then he successfully connected to the device and read sensory data.

However, I will ask that commit f5d3f05 to be tested as well and will get back to you.

(We also tested another SoM which required the same flag to be removed. I will publish the details of that Linux build an architecture as well.)

[scaryghost]

Since there's been no activity here in almost 3 weeks, I am closing this issue.