From e8222c6c96e00a48980d0f7d2f789365719a8ee8 Mon Sep 17 00:00:00 2001
From: jfranmatheu <45881831+jfranmatheu@users.noreply.github.com>
Date: Wed, 12 Feb 2025 17:23:03 +0100
Subject: [PATCH] GH action: another try to support cython build for both macos
 native and intel

---
 .github/workflows/build_cython.yml | 15 ++++++++++-----
 cy_setup.py                        | 19 ++++++++++++++++---
 2 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/build_cython.yml b/.github/workflows/build_cython.yml
index 68ecbb11..88bc483e 100644
--- a/.github/workflows/build_cython.yml
+++ b/.github/workflows/build_cython.yml
@@ -41,15 +41,20 @@ jobs:
         python -m pip install cython numpy setuptools wheel
 
     - name: Build Cython extensions
-      shell: bash  # Simplified - bash works on all platforms in GitHub Actions
+      shell: bash
       env:
         ARCHFLAGS: ${{ matrix.target == 'intel' && '-arch x86_64' || '' }}
+        CC: ${{ matrix.target == 'intel' && 'gcc -arch x86_64' || 'gcc' }}
+        CXX: ${{ matrix.target == 'intel' && 'g++ -arch x86_64' || 'g++' }}
       run: |
         if [ "${{ matrix.os }}" == "macos-latest" ] && [ "${{ matrix.target }}" == "intel" ]; then
-          PYTHON_CROSSENV=$(pwd)/crossenv
-          python -m pip install crossenv
-          python -m crossenv $(which python3) $PYTHON_CROSSENV
-          source $PYTHON_CROSSENV/bin/activate
+          # Install Rosetta 2 if needed
+          softwareupdate --install-rosetta --agree-to-license || true
+          
+          # Use homebrew to install cross-compilation tools
+          brew install gcc
+          
+          python -m pip install --upgrade pip
           python -m pip install cython numpy setuptools wheel
         fi
         python cy_setup.py build_ext --inplace
diff --git a/cy_setup.py b/cy_setup.py
index 0d0204fe..9f4f5cbd 100644
--- a/cy_setup.py
+++ b/cy_setup.py
@@ -3,24 +3,32 @@
 import numpy as np
 import sys
 import platform
+import os
 
 # Platform-specific compiler flags
 compiler_flags = {
     'Windows': ['/O2'],
-    'Darwin': ['-O3', '-stdlib=libc++'],  # macOS
+    'Darwin': ['-O3'],  # macOS
     'Linux': ['-O3'],
 }
 
 # Get the current platform
 current_platform = platform.system()
 
+# Base compiler flags
+extra_compile_args = compiler_flags.get(current_platform, ['-O3'])
+
+# Handle macOS cross-compilation
+if current_platform == 'Darwin' and os.environ.get('ARCHFLAGS'):
+    extra_compile_args.extend(os.environ['ARCHFLAGS'].split())
+
 shared_ext_kwargs = {
-    'extra_compile_args': compiler_flags.get(current_platform, ['-O3']),
+    'extra_compile_args': extra_compile_args,
     'language': 'c++'
 }
 
 if current_platform == 'Darwin':
-    shared_ext_kwargs['extra_link_args'] = ['-stdlib=libc++']
+    shared_ext_kwargs['extra_link_args'] = extra_compile_args
 
 np_ext_kwargs = {
     "include_dirs": [np.get_include()],
@@ -33,6 +41,11 @@
         sources=["retopoflow/cy/rfmesh_visibility.pyx"],
         **shared_ext_kwargs,
         **np_ext_kwargs
+    ),
+    Extension(
+        "retopoflow.cy.bmesh_fast",
+        sources=["retopoflow/cy/bmesh_fast.pyx"],
+        **shared_ext_kwargs
     )
 ]