Merge commit '36bca61764984ff5395653cf8377ec5daa71b709' as 'libs/protobuf'

libs/protobuf/build_defs/arch_tests.bzl

@@ -0,0 +1,56 @@
+"""Generated unittests to verify that a binary is built for the expected architecture."""
+
+load("//build_defs:internal_shell.bzl", "inline_sh_test")
+
+def _arch_test_impl(
+        name,
+        platform,
+        file_platform,
+        bazel_binaries = [],
+        system_binaries = [],
+        **kwargs):
+    """Bazel rule to verify that a Bazel or system binary is built for the aarch64 architecture.
+
+    Args:
+      name: the name of the test.
+      platform: a diagnostic name for this architecture.
+      file_platform: the expected output of `file`.
+      bazel_binaries: a set of binary targets to inspect.
+      system_binaries: a set of paths to system executables to inspect.
+      **kwargs: other keyword arguments that are passed to the test.
+    """
+
+    inline_sh_test(
+        name = name,
+        tools = bazel_binaries,
+        cmd = """
+          for binary in "$(rootpaths %s) %s"; do
+            (file -L $$binary | grep -q "%s") \
+                || (echo "Test binary is not an %s binary: "; file -L $$binary; exit 1)
+          done
+        """ % (
+            " ".join(bazel_binaries),
+            " ".join(system_binaries),
+            file_platform,
+            platform,
+        ),
+        target_compatible_with = select({
+            "//build_defs:" + platform: [],
+            "//conditions:default": ["@platforms//:incompatible"],
+        }),
+        **kwargs
+    )
+
+def aarch64_test(**kwargs):
+    _arch_test_impl(
+        platform = "aarch64",
+        file_platform = "ELF 64-bit LSB executable, ARM aarch64",
+        **kwargs
+    )
+
+def x86_64_test(**kwargs):
+    _arch_test_impl(
+        platform = "x86_64",
+        file_platform = "ELF 64-bit LSB executable, ARM x86_64",
+        **kwargs
+    )