feat: add armv7l in auto_archs when running on aarch64 (#2259)

* feat: add armv7l in auto_archs when running on aarch64

This depends on aarch32 EL0 support and thus is done conditionally.

* ci(travis): move to Ubuntu 22.04 / cp312

test/test_manylinuxXXXX_only.py

@@ -108,6 +108,9 @@ def test(manylinux_image, tmp_path):
     if manylinux_image in {"manylinux_2_28", "manylinux_2_34"} and platform.machine() == "x86_64":
         # We don't have a manylinux_2_28+ image for i686
         add_env["CIBW_ARCHS"] = "x86_64"
+    if platform.machine() == "aarch64":
+        # We just have a manylinux_2_31 image for armv7l
+        add_env["CIBW_ARCHS"] = "aarch64"
 
     actual_wheels = utils.cibuildwheel_run(project_dir, add_env=add_env)
 
@@ -150,4 +153,8 @@ def test(manylinux_image, tmp_path):
         # We don't have a manylinux_2_28+ image for i686
         expected_wheels = [w for w in expected_wheels if "i686" not in w]
 
+    if platform.machine() == "aarch64":
+        # We just have a manylinux_2_31 image for armv7l
+        expected_wheels = [w for w in expected_wheels if "armv7l" not in w]
+
     assert set(actual_wheels) == set(expected_wheels)

test/test_musllinux_X_Y_only.py

@@ -38,7 +38,7 @@ def test(musllinux_image, tmp_path):
 
     # build the wheels
     add_env = {
-        "CIBW_SKIP": "*-manylinux*",
+        "CIBW_SKIP": "*-manylinux* *_armv7l",
         "CIBW_MUSLLINUX_X86_64_IMAGE": musllinux_image,
         "CIBW_MUSLLINUX_I686_IMAGE": musllinux_image,
         "CIBW_MUSLLINUX_AARCH64_IMAGE": musllinux_image,
@@ -54,4 +54,5 @@ def test(musllinux_image, tmp_path):
         musllinux_versions=[musllinux_image],
         single_python=True,
     )
+    expected_wheels = [w for w in expected_wheels if "armv7l" not in w]
     assert set(actual_wheels) == set(expected_wheels)

test/test_testing.py

@@ -68,7 +68,7 @@ class TestSpam(TestCase):
         # See #336 for more info.
         bits = struct.calcsize("P") * 8
         if bits == 32:
-            self.assertIn(platform.machine(), ["i686", "wasm32"])
+            self.assertIn(platform.machine(), ["i686", "armv7l","armv8l", "wasm32"])
 '''
 
 

test/utils.py

@@ -18,6 +18,7 @@ from typing import Any, Final
 import pytest
 
 from cibuildwheel.architecture import Architecture
+from cibuildwheel.ci import CIProvider, detect_ci_provider
 from cibuildwheel.util.file import CIBW_CACHE_PATH
 
 EMULATED_ARCHS: Final[list[str]] = sorted(
@@ -25,6 +26,11 @@ EMULATED_ARCHS: Final[list[str]] = sorted(
 )
 SINGLE_PYTHON_VERSION: Final[tuple[int, int]] = (3, 12)
 
+_AARCH64_CAN_RUN_ARMV7: Final[bool] = Architecture.aarch64.value not in EMULATED_ARCHS and {
+    None: Architecture.armv7l.value not in EMULATED_ARCHS,
+    CIProvider.travis_ci: False,
+}.get(detect_ci_provider(), True)
+
 platform = os.environ.get("CIBW_PLATFORM", "")
 if platform:
     pass
@@ -173,7 +179,7 @@ def expected_wheels(
             machine_arch = "aarch64"
 
     if manylinux_versions is None:
-        if machine_arch == "armv7l":
+        if machine_arch in ("armv7l", "aarch64"):
             manylinux_versions = ["manylinux_2_17", "manylinux2014", "manylinux_2_31"]
         elif machine_arch == "x86_64":
             manylinux_versions = [
@@ -252,14 +258,23 @@ def expected_wheels(
         if platform == "linux":
             architectures = [arch_name_for_linux(machine_arch)]
 
-            if machine_arch == "x86_64" and not single_arch:
-                architectures.append("i686")
+            if not single_arch:
+                if machine_arch == "x86_64":
+                    architectures.append("i686")
+                elif (
+                    machine_arch == "aarch64"
+                    and sys.platform.startswith("linux")
+                    and not python_abi_tag.startswith("pp")
+                    and _AARCH64_CAN_RUN_ARMV7
+                ):
+                    architectures.append("armv7l")
 
             if len(manylinux_versions) > 0:
                 platform_tags = [
                     ".".join(
                         f"{manylinux_version}_{architecture}"
                         for manylinux_version in manylinux_versions
+                        if (manylinux_version, architecture) != ("manylinux_2_31", "aarch64")
                     )
                     for architecture in architectures
                 ]