-fopenmp error on Mac with M1 Chip

[savoygrizzly]

The following issue happens when trying to install assimpcy on Mac with the new m1 chip

assimp, llv, gcc and Xcode tools are installed as well as numpy & various deps

Collecting assimpcy
  Using cached AssimpCy-1.1.1.tar.gz (194 kB)
Requirement already satisfied: numpy in /Users/isee/Documents/P3D/env/lib/python3.9/site-packages (from assimpcy) (1.21.0.dev0+1119.gbadbf7032)
Building wheels for collected packages: assimpcy
  Building wheel for assimpcy (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /Users/isee/Documents/P3D/env/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/setup.py'"'"'; __file__='"'"'/private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-wheel-qpxg1e8i
       cwd: /private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/
  Complete output (16 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.macosx-10.9-universal2-3.9
  creating build/lib.macosx-10.9-universal2-3.9/assimpcy
  copying assimpcy/__init__.py -> build/lib.macosx-10.9-universal2-3.9/assimpcy
  running build_ext
  skipping './assimpcy/all.cpp' Cython extension (up-to-date)
  building 'assimpcy.all' extension
  creating build/temp.macosx-10.9-universal2-3.9
  creating build/temp.macosx-10.9-universal2-3.9/assimpcy
  gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch arm64 -arch x86_64 -g -I/Users/isee/Documents/P3D/env/lib/python3.9/site-packages/numpy/core/include -I/Users/isee/Documents/P3D/env/include -I/Library/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c ./assimpcy/all.cpp -o build/temp.macosx-10.9-universal2-3.9/./assimpcy/all.o -fopenmp
  clang: error: unsupported option '-fopenmp'
  clang: error: unsupported option '-fopenmp'
  error: command '/usr/bin/gcc' failed with exit code 1
  ----------------------------------------
  ERROR: Failed building wheel for assimpcy
  Running setup.py clean for assimpcy
Failed to build assimpcy
Installing collected packages: assimpcy
    Running setup.py install for assimpcy ... error
    ERROR: Command errored out with exit status 1:
     command: /Users/isee/Documents/P3D/env/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/setup.py'"'"'; __file__='"'"'/private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-record-z049u1xv/install-record.txt --single-version-externally-managed --compile --install-headers /Users/isee/Documents/P3D/env/include/site/python3.9/assimpcy
         cwd: /private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/
    Complete output (16 lines):
    running install
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.9-universal2-3.9
    creating build/lib.macosx-10.9-universal2-3.9/assimpcy
    copying assimpcy/__init__.py -> build/lib.macosx-10.9-universal2-3.9/assimpcy
    running build_ext
    skipping './assimpcy/all.cpp' Cython extension (up-to-date)
    building 'assimpcy.all' extension
    creating build/temp.macosx-10.9-universal2-3.9
    creating build/temp.macosx-10.9-universal2-3.9/assimpcy
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch arm64 -arch x86_64 -g -I/Users/isee/Documents/P3D/env/lib/python3.9/site-packages/numpy/core/include -I/Users/isee/Documents/P3D/env/include -I/Library/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c ./assimpcy/all.cpp -o build/temp.macosx-10.9-universal2-3.9/./assimpcy/all.o -fopenmp
    clang: error: unsupported option '-fopenmp'
    clang: error: unsupported option '-fopenmp'
    error: command '/usr/bin/gcc' failed with exit code 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /Users/isee/Documents/P3D/env/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/setup.py'"'"'; __file__='"'"'/private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-install-qgr8oc9t/assimpcy_362a15230e0d46d89f9a1a60cdaa5483/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/dh/pf46ptj579b7kqxhrkk3h4m80000gn/T/pip-record-z049u1xv/install-record.txt --single-version-externally-managed --compile --install-headers /Users/isee/Documents/P3D/env/include/site/python3.9/assimpcy Check the logs for full command output

[jsfrancal]

Unfortunately the author of this package hasn't been responding to pull requests for more than a year. My fork of the project fixes this issue provided you install a more recent OpenMP enabled C++ compiler via brew (brew install llvm) or macports (e.g. sudo port install clang-11).
https://github.com/jsfrancal/AssimpCy

[jr-garcia]

@sosickstudio can you verify if #4 solves this for you?

[RobertBiehl]

For me the issue persists.

      clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -fwrapv -O2 -Wall -fPIC -O2 -isystem /Users/rbiehl/miniconda3/envs/LLaVA/include -arch arm64 -fPIC -O2 -isystem /Users/rbiehl/miniconda3/envs/LLaVA/include -arch arm64 -I/opt/homebrew/opt/openjdk@11/include -I/private/var/folders/0_/3ftp0_bj2ps_v0x5pdfvv8bh0000gp/T/pip-build-env-argm9ucu/overlay/lib/python3.10/site-packages/numpy/core/include -I/private/var/folders/0_/3ftp0_bj2ps_v0x5pdfvv8bh0000gp/T/pip-install-6_p5le4w/assimpcy_4c54295c0fe74b10ab946056c5d2c14a/files/include -I/private/var/folders/0_/3ftp0_bj2ps_v0x5pdfvv8bh0000gp/T/pip-install-6_p5le4w/assimpcy_4c54295c0fe74b10ab946056c5d2c14a/files/include/assimp -I/Users/rbiehl/miniconda3/envs/LLaVA/include/python3.10 -c ./assimpcy/all.cpp -o build/temp.macosx-11.1-arm64-cpython-310/./assimpcy/all.o -stdlib=libc++ -fopenmp
      clang: error: unsupported option '-fopenmp'
      error: command '/usr/bin/clang' failed with exit code 1