Build from source enabling threading gives errors

[spdavern]

I've needed to build CADET-Core from source because the Conda package does not appear to be available for my machine. I can successfully build from source following the documentation with defaults which I believe do not enable multi-threading. However, if I attempt to enable multi-threading during the build, it gives errors.

Expected Behavior

Build from source adding -DENABLE_THREADING=ON into the prescribed cmake builds successfully and enables multi-threading support.

Actual Behavior

Build gives errors:

Steps to Reproduce the Problem

Follow instructions in BUILD-OSX.md

1. Use cmake -DCMAKE_INSTALL_PREFIX="<ROOT>/install" -DENABLE_THREADING=ON ../ as suggested in this forum discussion to enable multithreading.
2. 73% through the cmake gives the error above.

Specifications

• Version: 5.0.3
• Platform: osx-arm64 - Apple Macbook Pro with the Apple M3 Max chip
• Subsystem:
  ▶ cmake --version
  cmake version 3.31.3
  ▶ gcc --version
  Apple clang version 16.0.0 (clang-1600.0.26.6)
  Target: arm64-apple-darwin23.6.0
  Thread model: posix
  ▶ brew info hdf5
  ==> hdf5: stable 1.14.5 (bottled)
  ▶ brew info tbb
  ==> tbb: stable 2022.0.0 (bottled)
  ▶ brew info eigen
  ==> eigen: stable 3.4.0 (bottled), HEAD

[jbreue16]

Hi @spdavern , thanks for submitting the issue here ! :)

I think theres an easy fix for this, can you please try and build the code provided by the PR #354 ?

[spdavern]

Thank you! You'll see I had to make a similar change to 1 other file - see comment. However, with those changes I was able to build with -DENABLE_THREADING=ON. Installing gave an apparently functional, multi-thread-capable cadet-cli.