Add Android wheels

.github/workflows/posix.yml

@@ -20,6 +20,7 @@ on:
 
 jobs:
   build:
+    name: ${{ matrix.MB_ML_LIBC }}_${{ matrix.PLAT}}, ${{ matrix.INTERFACE64 == '1' && '64' || '32' }}
     runs-on: ${{ matrix.os }}
     defaults:
       run:
@@ -57,12 +58,15 @@ jobs:
           - { os: ubuntu-24.04-arm, PLAT: riscv64, INTERFACE64: '0', MB_ML_VER: '_2_39', MB_ML_LIBC: manylinux}
           - { os: ubuntu-24.04-arm, PLAT: riscv64, INTERFACE64: '1', MB_ML_VER: '_2_39', MB_ML_LIBC: manylinux}
 
+          - { os: ubuntu-latest, PLAT: x86_64, INTERFACE64: '0', MB_ML_LIBC: android}
+          - { os: ubuntu-latest, PLAT: x86_64, INTERFACE64: '1', MB_ML_LIBC: android}
+
+          - { os: ubuntu-latest, PLAT: arm64_v8a, INTERFACE64: '0', MB_ML_LIBC: android}
+          - { os: ubuntu-latest, PLAT: arm64_v8a, INTERFACE64: '1', MB_ML_LIBC: android}
+
     env:
       NIGHTLY: ${{ inputs.publish == false && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}
-      MB_ML_LIBC: ${{ matrix.MB_ML_LIBC }}
-      MB_ML_VER: ${{ matrix.MB_ML_VER }}
       INTERFACE64: ${{ matrix.INTERFACE64 }}
-      PLAT: ${{ matrix.PLAT }}
 
     steps:
     - uses: actions/checkout@v6.0.1
@@ -82,10 +86,6 @@ jobs:
       with:
         platforms: all
 
-    - name: Print some Environment variable
-      run: |
-        echo "PLAT: ${PLAT}"
-
     # - name: Setup tmate session
     #   if: ${{ failure() }}
     #   uses: mxschmitt/action-tmate@v3
@@ -96,11 +96,12 @@ jobs:
       uses: pypa/cibuildwheel@v4.1.0
       timeout-minutes: 60
       with:
+        # For Android, cibuildwheel has a minimum of Python 3.13, but the exact version
+        # doesn't matter because setup.py will replace the tag with "py3".
+        only: "cp313-${{ matrix.MB_ML_LIBC }}_${{matrix.PLAT}}"
         output-dir: dist
       env:
-        CIBW_ARCHS: ${{matrix.PLAT}}
         CIBW_BUILD_VERBOSITY: 1
-        CIBW_BUILD:  "cp39-${{ matrix.MB_ML_LIBC }}_${{matrix.PLAT}}"
 
         CIBW_MANYLINUX_I686_IMAGE: ${{ matrix.MB_ML_LIBC }}${{matrix.MB_ML_VER}}
         CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.MB_ML_LIBC }}${{matrix.MB_ML_VER}}

.github/workflows/windows.yml

@@ -119,15 +119,14 @@ jobs:
         rm local/scipy_openblas64/lib/*.a
         rm -f local/scipy_openblas64/lib/*.exp  # may not exist?
         rm local/scipy_openblas64/lib/*.def
-        rm -rf local/scipy_openblas64/lib/pkgconfig
         if [[ -d local/scipy_openblas64/64 ]]; then
             rm -rf local/scipy_openblas64/64
         else
             rm -rf local/scipy_openblas64/32
         fi
         sed -e "s/bin/lib/" -i local/scipy_openblas64/lib/cmake/openblas/OpenBLASConfig.cmake
         sed -e "s/dll/lib/" -i local/scipy_openblas64/lib/cmake/openblas/OpenBLASConfig.cmake
-        mkdir  local/scipy_openblas64/lib/pkgconfig
+
         if [[ "${INTERFACE64}" != "1" ]]; then
             mv local/scipy_openblas64 local/scipy_openblas32
             # rewrite the name of the project to scipy-openblas32
@@ -138,10 +137,10 @@ jobs:
             sed -e "s/cflags =.*/cflags = '-DBLAS_SYMBOL_PREFIX=scipy_'/" -i local/scipy_openblas32/__init__.py
             sed -e "s/openblas64/openblas32/" -i local/scipy_openblas32/__init__.py
             sed -e "s/openblas64/openblas32/" -i local/scipy_openblas32/__main__.py
-            PYTHONPATH=$PWD/local python -c "import scipy_openblas32 as s; print(s.get_pkg_config(use_prefix=True))" > local/scipy_openblas32/lib/pkgconfig/scipy-openblas.pc
-        else
-            PYTHONPATH=$PWD/local python -c "import scipy_openblas64 as s; print(s.get_pkg_config(use_prefix=True))" > local/scipy_openblas64/lib/pkgconfig/scipy-openblas.pc
         fi
+
+        source tools/get_pkg_config.sh
+
         echo "" >> LICENSE.txt
         echo "----" >> LICENSE.txt
         echo "" >> LICENSE.txt

.gitignore

@@ -18,3 +18,4 @@ local/scipy_openblas64/*.so
 local/scipy_openblas64/*.pyd
 local/scipy_openblas64/*.dylib
 objconv/
+wheelhouse/

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## OpenBLAS v0.3.34 (v0.3.34)
 
+### 0.3.34.481.2 (2026-11-01)
+
+- Add Android wheels
+
 ### 0.3.34.481.1 (2026-10-29)
 
 - Add a weekly scheduled run to both Windows workflows against OpenBLAS HEAD.

build-openblas.sh

@@ -1,6 +1,11 @@
 #! /bin/bash
 
 set -xeo pipefail
+
+# Check the required environment variables are set.
+: ${MB_ML_LIBC:?}
+: ${PLAT:?}
+
 source tools/build_steps.sh
 echo "------ BEFORE BUILD ---------"
 before_build

ci-before-build.sh

@@ -29,6 +29,16 @@ fi
 export OPENBLAS_VERSION=$version
 echo "creating wheel from $OPENBLAS_COMMIT (NIGHTLY is $NIGHTLY)"
 
+libc_plat=${CIBUILDWHEEL_BUILD_IDENTIFIER#*-}
+MB_ML_LIBC=${libc_plat%%_*}
+PLAT=${libc_plat#*_}
+
+BUILD_PREFIX="$(pwd)/build/prefix/$libc_plat"
+rm -rf "$BUILD_PREFIX"
+mkdir -p "$BUILD_PREFIX"
+
+# On emulated architectures, RUNNER_ARCH makes manylinux-install-clang install a
+# compiler for the native architecture, which will be much faster.
 case "$PLAT" in
     loongarch64|ppc64le|s390x|riscv64)
         manylinux-install-clang -v 21.1.6.0

ci-repair-wheel.sh

@@ -1,10 +1,8 @@
 #! /bin/bash
 set -xe
 
-PYTHON=${PYTHON:-python3.9}
-
 if [ $(uname) == "Darwin" ]; then
-    $PYTHON -m pip install delocate
+    python3 -m pip install delocate
     # move the mis-named scipy_openblas64-none-any.whl to a platform-specific name
     # if [ "${PLAT}" == "arm64" ]; then
     #     for f in $2/*.whl; do mv $f "${f/%any.whl/macosx_11_0_$PLAT.whl}"; done

ci-test.sh

@@ -1,16 +1,9 @@
 #!/bin/bash
-# Test that the wheel works with a different python
 set -xe
 
-if [ "${PLAT}" == "arm64" ]; then
-    # Cannot test
-    exit 0
-fi
-
-PYTHON=python3.9
-if [ "$(uname)" == "Darwin" -a "${PLAT}" == "x86_64" ]; then
-    which python3.9
-    PYTHON="arch -x86_64 python3.9"
+PYTHON=python3
+if [ "$CIBUILDWHEEL_BUILD_IDENTIFIER" = "macosx_x86_64" ]; then
+    PYTHON="arch -x86_64 python3"
 fi
 
 # Make sure the module works and that the version strings match

local/scipy_openblas64/__init__.py

@@ -5,6 +5,7 @@
 import ctypes
 import os
 from pathlib import Path
+import re
 import sys
 from textwrap import dedent
 import platform
@@ -91,11 +92,20 @@ def get_pkg_config(use_preloading=False, use_prefix=False):
         # Don't use `$prefix` since the file may be located outside the package tree
         libdir = get_lib_dir()
         incdir = get_include_dir()
+
+    variables = {}
+    with open(f"{get_lib_dir()}/pkgconfig/scipy-openblas.pc") as pc_file:
+        for line in pc_file:
+            # The CMake build used by Windows ARM64 produces a Version: keyword but not
+            # a version= variable, so parse both kinds of line.
+            if match := re.fullmatch(r"(.+?)[:=](.*)", line.strip()):
+                variables[match[1].strip()] = match[2].strip()
+
     return dedent(f"""\
         libdir={libdir}
         includedir={incdir}
-        openblas_config= {get_openblas_config()}
-        version={get_openblas_config().split(" ")[1]}
+        openblas_config= {variables["openblas_config"]}
+        version={variables.get("version") or variables["Version"]}
         extralib={extralib}
         Name: openblas
         Description: OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version
@@ -146,5 +156,10 @@ def get_openblas_config():
     bytes = openblas_config()
     return bytes.decode("utf8")
 
-# Import the DLL which will make the namespace available to NumPy/SciPy
-get_openblas_config()
+
+if "CIBUILDWHEEL" in os.environ and sys.platform == "android":
+    # We're cross-compiling, so we can't load the library.
+    pass
+else:
+    # Import the DLL which will make the namespace available to NumPy/SciPy
+    get_openblas_config()

pyproject.toml

@@ -9,7 +9,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "scipy-openblas64"
 # 0.3.34-481-g5137bb62
-version = "0.3.34.481.1"
+version = "0.3.34.481.2"
 requires-python = ">=3.7"
 description = "Provides OpenBLAS for python packaging"
 readme = "README.md"
@@ -45,15 +45,31 @@ before-build = "bash ci-before-build.sh"
 repair-wheel-command = "bash ci-repair-wheel.sh {dest_dir} {wheel}"
 test-command = "cd {package} && bash ci-test.sh"
 environment-pass = [
-  "OPENBLAS_COMMIT",
   "NIGHTLY",
-  "MB_ML_LIBC",
-  "MB_ML_VER",
   "INTERFACE64",
-  "BUILD_DIR",
-  "PLAT",
-  "OS-NAME",
+
+  # On emulated architectures, RUNNER_ARCH makes manylinux-install-clang install a
+  # compiler for the native architecture, which will be much faster.
   "RUNNER_ARCH",
 ]
+
+[tool.cibuildwheel.android]
+# The Linux code in ci-repair-wheel.sh isn't relevant to Android, so use the default
+# repair command from the cibuildwheel documentation.
+repair-wheel-command = "auditwheel repair --ldpaths {ldpaths} -w {dest_dir} {wheel}"
+
+# Mobile platforms only support Python test-commands, not shell scripts.
+test-command = """python -c '
+import runpy
+
+def run_module(mod_name):
+    runpy.run_module(mod_name, run_name="__main__", alter_sys=True)
+
+try:
+    run_module("scipy_openblas32")
+except ImportError:
+    run_module("scipy_openblas64")
+'"""
+
 [project.entry-points.pkg_config]
 scipy-openblas = 'scipy_openblas64.lib.pkgconfig'

tools/build_prepare_wheel.sh

@@ -7,12 +7,12 @@ if [ "$?" != "0" ]; then
     # inside docker
     cd /project
 fi
-PYTHON=${PYTHON:-python3.9}
 
 mkdir -p local/openblas
 mkdir -p dist
 
-tar -C local/scipy_openblas64 --strip-components=2 -xf libs/openblas.tar.gz
+rm -rf local/scipy_openblas64/{include,lib}
+tar -C local/scipy_openblas64 -xf libs/openblas.tar.gz
 
 # do not package the static libs and symlinks, only take the shared object
 find local/scipy_openblas64/lib -maxdepth 1 -type l -delete
@@ -32,7 +32,7 @@ if [[ $py_version != $pkg_version* ]]; then
   exit 1
 fi
 
-if [ $(uname) == "Darwin" ]; then
+if [ "$MB_ML_LIBC" == "macosx" ]; then
   soname=$(cd local/scipy_openblas64/lib; ls libscipy_openblas*.dylib)
   echo otool -D local/scipy_openblas64/lib/$soname
   otool -D local/scipy_openblas64/lib/$soname
@@ -41,18 +41,11 @@ if [ $(uname) == "Darwin" ]; then
   install_name_tool -id @rpath/$soname local/scipy_openblas64/lib/$soname
 fi
 
-rm -rf local/scipy_openblas64/lib/pkgconfig
-mkdir local/scipy_openblas64/lib/pkgconfig
 echo "" >> LICENSE.txt
 echo "----" >> LICENSE.txt
 echo "" >> LICENSE.txt
 cat tools/LICENSE_posix.txt >> LICENSE.txt
 
-if [ "$(uname)" == "Darwin" -a "${PLAT}" == "x86_64" ]; then
-    PYTHON="arch -x86_64 python3"
-else
-    PYTHON=python3
-fi
 if [ "${INTERFACE64}" != "1" ]; then
     # rewrite the name of the project to scipy-openblas32
     # this is a hack, but apparently there is no other way to change the name
@@ -67,11 +60,10 @@ if [ "${INTERFACE64}" != "1" ]; then
     sed -e "s/openblas64/openblas32/" -i.bak local/scipy_openblas32/__main__.py
     sed -e "s/openblas64/openblas32/" -i.bak local/scipy_openblas32/__init__.py
     rm local/scipy_openblas32/*.bak
-    PYTHONPATH=$PWD/local $PYTHON -c "import scipy_openblas32 as s; print(s.get_pkg_config(use_prefix=True))" > local/scipy_openblas32/lib/pkgconfig/scipy-openblas.pc
-else
-    PYTHONPATH=$PWD/local $PYTHON -c "import scipy_openblas64 as s; print(s.get_pkg_config(use_prefix=True))" > local/scipy_openblas64/lib/pkgconfig/scipy-openblas.pc
 fi
 
+source tools/get_pkg_config.sh
+
 rm -rf dist/*