Fix some cibw things

.github/workflows/python-release.yml

@@ -1,9 +1,6 @@
 name: Python Package
 
 on:
-  push:
-    branches:
-      - main
   release:
     branches:
       - main
@@ -31,23 +28,27 @@ jobs:
         with:
           platforms: all
 
-      - name: Build CKZG
-        working-directory: src
-        run: make
-
       - name: Setup Python
         uses: actions/setup-python@v4
-        with:
-          python-version: '3.10'
 
       - name: Install cibuildwheel
         run: python -m pip install cibuildwheel==2.16.5
 
       - name: Build wheels
-        working-directory: bindings/python
-        run: python -m cibuildwheel --output-dir wheelhouse
+        run: python -m cibuildwheel --output-dir wheelhouse bindings/python
         env:
-          CIBW_ARCHS_LINUX: auto aarch64
+          CIBW_ARCHS_LINUX: x86_64 i686 aarch64
+          # musllinux uses apk & manylinux uses yum
+          CIBW_BEFORE_BUILD_LINUX: |
+            if command -v apk > /dev/null; then
+              apk add --update clang && make -C src c_kzg_4844.o
+            elif command -v yum > /dev/null; then
+              yum install -y clang && make -C src c_kzg_4844.o
+            fi
+          CIBW_BEFORE_BUILD_WINDOWS: |
+            make -C src c_kzg_4844.o
+          CIBW_BEFORE_BUILD_MACOS: |
+            make -C src c_kzg_4844.o
 
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1

src/Makefile

@@ -20,7 +20,7 @@ ifeq ($(PLATFORM),Darwin)
 endif
 
 # The base compiler flags. More can be added on command line.
-CFLAGS += -I../inc -O2 -Wall -Wextra
+CFLAGS += -I../inc -O2 -Wall -Wextra -Wno-missing-braces
 
 # Cross-platform compilation settings.
 ifeq ($(PLATFORM),Windows)