Selectively add source or gen dir to includes. (#9438)
When both directories are added this results in protoc emitting a
"warning: directory does not exist.". This makes sense because when
there are no inputs from the other directory, it is also not present
n the sandbox where protoc is executed.
diff --git a/protobuf.bzl b/protobuf.bzl
index 26b6625..826b610 100644
--- a/protobuf.bzl
+++ b/protobuf.bzl
@@ -80,7 +80,14 @@
source_dir = _SourceDir(ctx)
gen_dir = _GenDir(ctx).rstrip("/")
if source_dir:
- import_flags = depset(direct=["-I" + source_dir, "-I" + gen_dir])
+ has_sources = any([src.is_source for src in srcs])
+ has_generated = any([not src.is_source for src in srcs])
+ import_flags = []
+ if has_sources:
+ import_flags += ["-I" + source_dir]
+ if has_generated:
+ import_flags += ["-I" + gen_dir]
+ import_flags = depset(direct=import_flags)
else:
import_flags = depset(direct=["-I."])
