Handle .proto files that end up in a different package
Bazel poses a strict requirement that .proto files and proto_library
must be in the same package. This CL handles this automatically by
creating the proto_library in a separate dir/package if necessary
Implementation details
- Partition the `srcs` by package. `srcs` has been computed using
`transformSubpackagePath`, so the information about packages is
available at this point
- Create a proto_library in each package by using
`CommonAttributes.Dir`. Collect all these additional libraries
and put them in `info.Proto_libraries` so that they get added as deps
of (cc|python|...)_proto_library
- Add an import_prefix to the proto_library in subpackages relative to
the current directory. This relies on the assumption that every src is
beneath the current directory (Soong will complain if a path in
Android.bp contains ../)
filegroup module type uses a separate code-path to create proto_library.
This will be handled in the next CL in stack.
Test: bp2build unit tests
Test: TH
Test: Built the failing internal module mentioned in
b/292583584#comment1
Bug: 292583584
Change-Id: I437fc89092321b26c5f0511387cde9e84084d6f9
diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index 490cd91..496a482 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -4903,3 +4903,67 @@
},
})
}
+
+// Bazel enforces that proto_library and the .proto file are in the same bazel package
+func TestGenerateProtoLibraryInSamePackage(t *testing.T) {
+ tc := Bp2buildTestCase{
+ Description: "cc_library depends on .proto files from multiple packages",
+ ModuleTypeUnderTest: "cc_library",
+ ModuleTypeUnderTestFactory: cc.LibraryFactory,
+ Blueprint: `
+cc_library_static {
+ name: "foo",
+ srcs: [
+ "foo.proto",
+ "bar/bar.proto", // Different package because there is a bar/Android.bp
+ "baz/subbaz/baz.proto", // Different package because there is baz/subbaz/Android.bp
+ ],
+}
+` + simpleModuleDoNotConvertBp2build("cc_library", "libprotobuf-cpp-lite"),
+ Filesystem: map[string]string{
+ "bar/Android.bp": "",
+ "baz/subbaz/Android.bp": "",
+ },
+ }
+
+ // We will run the test 3 times and check in the root, bar and baz/subbaz directories
+ // Root dir
+ tc.ExpectedBazelTargets = []string{
+ MakeBazelTarget("cc_library_static", "foo", AttrNameToString{
+ "local_includes": `["."]`,
+ "deps": `[":libprotobuf-cpp-lite"]`,
+ "implementation_whole_archive_deps": `[":foo_cc_proto_lite"]`,
+ }),
+ MakeBazelTarget("proto_library", "foo_proto", AttrNameToString{
+ "srcs": `["foo.proto"]`,
+ }),
+ MakeBazelTarget("cc_lite_proto_library", "foo_cc_proto_lite", AttrNameToString{
+ "deps": `[
+ ":foo_proto",
+ "//bar:foo_proto",
+ "//baz/subbaz:foo_proto",
+ ]`,
+ }),
+ }
+ runCcLibraryTestCase(t, tc)
+
+ // bar dir
+ tc.Dir = "bar"
+ tc.ExpectedBazelTargets = []string{
+ MakeBazelTarget("proto_library", "foo_proto", AttrNameToString{
+ "srcs": `["//bar:bar.proto"]`,
+ "import_prefix": `"bar"`,
+ }),
+ }
+ runCcLibraryTestCase(t, tc)
+
+ // baz/subbaz dir
+ tc.Dir = "baz/subbaz"
+ tc.ExpectedBazelTargets = []string{
+ MakeBazelTarget("proto_library", "foo_proto", AttrNameToString{
+ "srcs": `["//baz/subbaz:baz.proto"]`,
+ "import_prefix": `"baz/subbaz"`,
+ }),
+ }
+ runCcLibraryTestCase(t, tc)
+}