test(import_cc): add library support to aspect.

support both static and shared library imports in the
Bazel import_cc aspect.

Change-Id: Ic6bc068c4be074cf2ea3f81dd6eda8f35011d3b6
Signed-off-by: Jordan Bonser <jordan.bonser@arm.com>

Author: jordan-bonser

tests/bazel_cc_import/bazel/BUILD.bazel

@@ -6,5 +6,11 @@ gen_bob_import(
         "//tests/bazel_cc_import/bazel/header_only/includes",
         "//tests/bazel_cc_import/bazel/header_only/normal",
         "//tests/bazel_cc_import/bazel/header_only/strip_prefix",
+        "//tests/bazel_cc_import/bazel/library/cmake:shared",
+        "//tests/bazel_cc_import/bazel/library/cmake:static",
+        "//tests/bazel_cc_import/bazel/library/dependency:shared",
+        "//tests/bazel_cc_import/bazel/library/dependency:static",
+        "//tests/bazel_cc_import/bazel/library/simple:shared",
+        "//tests/bazel_cc_import/bazel/library/simple:static",
     ],
 )

tests/bazel_cc_import/bazel/bob_import_cc_aspect.bzl

@@ -84,6 +84,42 @@ def _symlink_headers(ctx, module_dir, dir_name, headers):
 
     return outputs
 
+def _library_file(target):
+    candidates = []
+
+    def add_candidate(file):
+        if file.path.endswith(".a") or file.path.endswith(".so"):
+            candidates.append(file)
+
+    # cc_shared_library has this
+    for file in target[DefaultInfo].files.to_list():
+        add_candidate(file)
+
+    if not candidates and CcInfo in target:
+        linking_context = target[CcInfo].linking_context
+        for linker_input in linking_context.linker_inputs.to_list():
+            for library in linker_input.libraries:
+                for file in [
+                    library.dynamic_library,
+                    library.static_library,
+                ]:
+                    add_candidate(file)
+
+    if len(candidates) > 1:
+        fail("More than one lib output in '" + str(target) + "' " + str(candidates))
+
+    if len(candidates) == 0:
+        # header only lib
+        return None
+
+    return candidates[0]
+
+def _symlink_library(ctx, module_dir, dir_name, library):
+    include_path = paths.join(dir_name, library.basename)
+    out = ctx.actions.declare_file(module_dir + "/" + include_path)
+    ctx.actions.symlink(output = out, target_file = library)
+    return include_path, out
+
 def _write_bp(ctx, target_name, src, defines, includes):
     out = ctx.actions.declare_file(target_name + "/build.bp")
     ctx.actions.write(out, bp_content(target_name, src, includes, defines))
@@ -120,6 +156,11 @@ def _gen_bob_import_impl(ctx):
         includes = [include_destination]
         src = None
 
+        library = _library_file(dep)
+        if library:
+            src, library_out = _symlink_library(ctx, target_name, library_destination, library)
+            outputs.append(library_out)
+
         outputs.append(_write_bp(ctx, target_name, src, defines, includes))
         output.extend(outputs)
 

tests/bazel_cc_import/build.bp

@@ -16,11 +16,53 @@ bob_binary {
     header_libs: ["tests_bazel_cc_import_bazel_header_only_strip_prefix_strip_prefix"],
 }
 
+bob_binary {
+    name: "bob_test_bazel_cc_import_library_simple_shared",
+    srcs: ["consumer/library/simple.c"],
+    shared_libs: ["tests_bazel_cc_import_bazel_library_simple_shared"],
+}
+
+bob_binary {
+    name: "bob_test_bazel_cc_import_library_simple_static",
+    srcs: ["consumer/library/simple.c"],
+    static_libs: ["tests_bazel_cc_import_bazel_library_simple_static"],
+}
+
+bob_binary {
+    name: "bob_test_bazel_cc_import_library_dependency_shared",
+    srcs: ["consumer/library/dependency.c"],
+    shared_libs: ["tests_bazel_cc_import_bazel_library_dependency_shared"],
+}
+
+bob_binary {
+    name: "bob_test_bazel_cc_import_library_dependency_static",
+    srcs: ["consumer/library/dependency.c"],
+    static_libs: ["tests_bazel_cc_import_bazel_library_dependency_static"],
+}
+
+bob_binary {
+    name: "bob_test_bazel_cc_import_library_cmake_static",
+    srcs: ["consumer/library/cmake.c"],
+    static_libs: ["tests_bazel_cc_import_bazel_library_cmake_static"],
+}
+
+bob_binary {
+    name: "bob_test_bazel_cc_import_library_cmake_shared",
+    srcs: ["consumer/library/cmake.c"],
+    shared_libs: ["tests_bazel_cc_import_bazel_library_cmake_shared"],
+}
+
 bob_alias {
     name: "bob_test_bazel_import",
     srcs: [
         "bob_test_bazel_cc_import_header_only_normal",
         "bob_test_bazel_cc_import_header_only_includes",
         "bob_test_bazel_cc_import_header_only_strip_prefix",
+        "bob_test_bazel_cc_import_library_simple_shared",
+        "bob_test_bazel_cc_import_library_simple_static",
+        "bob_test_bazel_cc_import_library_dependency_shared",
+        "bob_test_bazel_cc_import_library_dependency_static",
+        "bob_test_bazel_cc_import_library_cmake_static",
+        "bob_test_bazel_cc_import_library_cmake_shared",
     ],
 }

tests/bazel_cc_import/run_test.sh

@@ -79,6 +79,10 @@ TEST_EXECUTABLES=(
     bob_test_bazel_cc_import_header_only_normal
     bob_test_bazel_cc_import_header_only_includes
     bob_test_bazel_cc_import_header_only_strip_prefix
+    bob_test_bazel_cc_import_library_simple_shared
+    bob_test_bazel_cc_import_library_simple_static
+    bob_test_bazel_cc_import_library_dependency_shared
+    bob_test_bazel_cc_import_library_dependency_static
 )
 
 for executable in "${TEST_EXECUTABLES[@]}"; do