try basic test to check linkage

Author: rickeylev

tests/cc/current_py_cc_headers/BUILD.bazel

@@ -12,6 +12,24 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+load("@rules_cc//cc:cc_binary.bzl", "cc_binary")
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
 load(":current_py_cc_headers_tests.bzl", "current_py_cc_headers_test_suite")
 
 current_py_cc_headers_test_suite(name = "current_py_cc_headers_tests")
+
+cc_binary(
+    name = "bin_abi3",
+    srcs = ["bin_abi3.cc"],
+    linkshared = True,
+    deps = [
+        "//python/cc:current_py_cc_headers_abi3",
+    ],
+)
+
+sh_test(
+    name = "abi3_headers_linkage_test",
+    srcs = ["abi3_headers_linkage_test.sh"],
+    data = [":bin_abi3"],
+    deps = ["@bazel_tools//tools/bash/runfiles"],
+)

tests/cc/current_py_cc_headers/abi3_headers_linkage_test.sh

@@ -0,0 +1,22 @@
+
+echo "hi =========="
+echo "hi =========="
+
+# --- begin runfiles.bash initialization v3 ---
+# Copy-pasted from the Bazel Bash runfiles library v3.
+set -uo pipefail; set +e; f=bazel_tools/tools/bash/runfiles/runfiles.bash
+source "${RUNFILES_DIR:-/dev/null}/$f" 2>/dev/null || \
+  source "$(grep -sm1 "^$f " "${RUNFILES_MANIFEST_FILE:-/dev/null}" | cut -f2- -d' ')" 2>/dev/null || \
+  source "$0.runfiles/$f" 2>/dev/null || \
+  source "$(grep -sm1 "^$f " "$0.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
+  source "$(grep -sm1 "^$f " "$0.exe.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
+  { echo>&2 "ERROR: cannot find $f"; exit 1; }; f=; set -e
+# --- end runfiles.bash initialization v3 ---
+set +e
+
+echo $RUNFILES_DIR
+lib=$(rlocation _main/tests/cc/current_py_cc_headers/libbin_abi3.so)
+
+dumpbin /nologo /DEPENDENTS "$lib"
+
+exit 1

tests/cc/current_py_cc_headers/bin_abi3.cc

@@ -0,0 +1,17 @@
+#include <Python.h>
+
+int SomeFunction() {
+  // Early return to prevent the broken code below from running.
+  if (true) {
+    return 0;
+  }
+
+  // The below code won't actually run. We just reference some Python
+  // symbols so the compiler and linker do some work to verify they are
+  // able to resolve the symbols.
+  // To make it actually run, more custom initialization is necessary.
+  // See https://docs.python.org/3/c-api/intro.html#embedding-python
+  Py_Initialize();
+  Py_Finalize();
+  return 0;
+}