BLD: wasm

Author: andyfaff

.github/workflows/wheels.yml

@@ -78,7 +78,11 @@ jobs:
             python: "cp313t"
           - buildplat: [ macos13, macosx_x86_64, openblas ]
             python: "cp314t"
-
+        include:
+          - buildplat: [ ubuntu-22.04, pyodide_wasm32, "" ]
+            python: "cp312"
+          - buildplat: [ ubuntu-22.04, pyodide_wasm32, "" ]
+            python: "cp313"
     env:
       IS_32_BIT: ${{ matrix.buildplat[1] == 'win32' }}  # used in a cibw_*.sh script
 
@@ -147,7 +151,12 @@ jobs:
       - name: Build wheel
         env:
           CIBW_BUILD: ${{ matrix.python }}-${{ matrix.buildplat[1] }}
+          SRC: ${{ github.workspace }}/numpy-src
         run: |
+          if [[ $CIBW_BUILD == *pyodide_wasm32 ]]; then
+            # specifying CIBW_PLATFORM is required to get the wasm build to work
+            export CIBW_PLATFORM="pyodide"
+          fi
           python -m pip install cibuildwheel==3.1.1
           python -m cibuildwheel numpy-src --config-file cibuildwheel.toml --output-dir ./dist
 

cibuildwheel.toml

@@ -34,3 +34,13 @@ repair-wheel-command = "bash -el ./tools/wheels/repair_windows.sh {wheel} {dest_
 select = ["*-win32"]
 config-settings = {setup-args = ["--vsenv", "-Dallow-noblas=true"], build-dir="build"}
 repair-wheel-command = ""
+
+[tool.cibuildwheel.pyodide]
+before-test = "pip install -r $SRC/requirements/emscripten_test_requirements.txt"
+# Pyodide ensures that the wheels are already repaired by auditwheel-emscripten
+repair-wheel-command = ""
+test-command = "python -m pytest --pyargs numpy -m 'not slow'"
+
+[tool.cibuildwheel.pyodide.config-settings]
+build-dir = "build"
+setup-args = ["--cross-file=$SRC/tools/ci/emscripten/emscripten.meson.cross", "-Dblas=none", "-Dlapack=none"]