MacOS 14 arm64 missing gcc@11 library

[backeb]

Describe the bug
Follow-up from #162. After upgrading from MacOS 13 to macOS 14 (arm64 architecture) installation now succeeds, but upon initialization of meshkernel a library is missing.

When running

from meshkernel import MeshKernel
MeshKernel()

I get an error indicating

Library not loaded: [/opt/homebrew/opt/gcc](https://file+.vscode-resource.vscode-cdn.net/opt/homebrew/opt/gcc)@11/lib/gcc/11/libgomp.1.dylib

MacOSX sw_vers output:

ProductName:            macOS
ProductVersion:         14.4.1
BuildVersion:           23E224

To Reproduce

mamba create --name meshkernel python=3.11
mamba activate meshkernel
pip install meshkernel
mamba install ipython

Then in ipython do

from meshkernel import MeshKernel
MeshKernel()

This creates the following error:

---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
Cell In[1], line 2
      1 from meshkernel import MeshKernel
----> 2 MeshKernel()

File ~/mambaforge/envs/meshkernel/lib/python3.11/site-packages/meshkernel/meshkernel.py:88, in MeshKernel.__init__(self, projection)
     85         system = "Unknown OS"
     86     raise OSError("Unsupported operating system: {}".format(system))
---> 88 self.lib = CDLL(str(lib_path))
     90 self._exit_code = self.__get_exit_codes()
     92 self._allocate_state(projection)

File ~/mambaforge/envs/meshkernel/lib/python3.11/ctypes/__init__.py:376, in CDLL.__init__(self, name, mode, handle, use_errno, use_last_error, winmode)
    373 self._FuncPtr = _FuncPtr
    375 if handle is None:
--> 376     self._handle = _dlopen(self._name, mode)
    377 else:
    378     self._handle = handle

OSError: dlopen(/Users/backeb/mambaforge/envs/meshkernel/lib/python3.11/site-packages/meshkernel/libMeshKernelApi.dylib, 0x0006): Library not loaded: /opt/homebrew/opt/gcc@11/lib/gcc/11/libgomp.1.dylib
  Referenced from: <AE9E9AF2-D30A-3489-979F-BE034891C169> /Users/backeb/mambaforge/envs/meshkernel/lib/python3.11/site-packages/meshkernel/libMeshKernelApi.dylib
  Reason: tried: '/opt/homebrew/opt/gcc@11/lib/gcc/11/libgomp.1.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/opt/homebrew/opt/gcc@11/lib/gcc/11/libgomp.1.dylib' (no such file), '/opt/homebrew/opt/gcc@11/lib/gcc/11/libgomp.1.dylib' (no such file)

Using homebrew I installed gcc@11 by doing brew install gcc@11, and retried the following in ipython:

from meshkernel import MeshKernel
MeshKernel()

Which created the MeshKernel class

Variable     Type    Data/Info
------------------------------
MeshKernel   type    <class 'meshkernel.meshkernel.MeshKernel'>

[lucacarniato]

We are not allowed to link OpenMP statically on all operating systems. Installing GCC 11 can solve this issue

brew install gcc@11