Getting an error when trying to build Bluetooth Mesh examples on macOS

[f0corner]

The problem

I am trying to build the examples contained in Bluetooth Mesh stack, but I get the following error when running cmake:

...
-- Found assembler: /usr/local/bin/arm-none-eabi-gcc
-- Check for working C compiler: /usr/local/bin/arm-none-eabi-gcc
-- Check for working C compiler: /usr/local/bin/arm-none-eabi-gcc -- broken
CMake Error at /Applications/CMake.app/Contents/share/cmake-3.10/Modules/CMakeTestCCompiler.cmake:52 (message):
  The C compiler

    "/usr/local/bin/arm-none-eabi-gcc"

  is not able to compile a simple test program.
...

##What I do Here are the steps I take to try to build the examples:

• I download the Mesh SDK from www.nordicsemi.com/.../nRF5-SDK-for-Mesh
• I unzip the file
• Using the terminal: cd nrf5_SDK_for_Mesh_v1.0.0_src; mkdir build; cd build;, and
• cmake -DPLATFORM=nrf52832_xxAA -DTOOLCHAIN=gccarmemb -DSOFTDEVICE=s132_5.0.0 ..

##More information about my setup

• macOS High Sierra 10.13.2
• nrf5_SDK_for_Mesh_v1.0.0_src
• CMake version 3.10.1
• gcc-arm-none-eabi-7-2017-q4-major (NOTE: /usr/local/bin/arm-none-eabi-gcc is a symbolic link to {somewhere on my system}/gcc-arm-none-eabi-7-2017-q4-major/bin/arm-none-eabi-gcc)

[RK]

go look at the cmake output logfile and work out why your c compiler isn't working.

[Thomas Stenersen]

Hi f0corner,

I'm suspecting that the issue is with the symbolic link to arm-none-eabi-gcc. It might be that it's not finding the rest of the arm-none-eabi-* files and/or the standard library. I'd suggest to try adding the gcc-arm-none-eab-7-2017-q4-major/bin/ to your PATH or to ensure that everything in gcc-arm-none-eab-7-2017-q4-major/bin/ has a link in /usr/local/bin.

On my MacOS, I'm using Homebrew to install arm-none-eabi-gcc.

Best,
Thomas

[f0corner]

@thomasstenersen, As you suggested, I removed the symbolic link and added {...}/gcc-arm-none-eab-7-2017-q4-major/bin to my PATH instead, and now everything works great. Thank you for your help. :)