| diff --git a/python/internal.bzl b/python/internal.bzl |
| index d9ba37ef8..6596a2d39 100644 |
| --- a/python/internal.bzl |
| +++ b/python/internal.bzl |
| @@ -1,5 +1,11 @@ |
| # Internal helpers for building the Python protobuf runtime. |
| |
| +def _remove_cross_repo_path(path): |
| + components = path.split("/") |
| + if components[0] == "..": |
| + return "/".join(components[2:]) |
| + return path |
| + |
| def _internal_copy_files_impl(ctx): |
| strip_prefix = ctx.attr.strip_prefix |
| if strip_prefix[-1] != "/": |
| @@ -7,10 +13,11 @@ def _internal_copy_files_impl(ctx): |
| |
| src_dests = [] |
| for src in ctx.files.srcs: |
| - if src.short_path[:len(strip_prefix)] != strip_prefix: |
| + short_path = _remove_cross_repo_path(src.short_path) |
| + if short_path[:len(strip_prefix)] != strip_prefix: |
| fail("Source does not start with %s: %s" % |
| - (strip_prefix, src.short_path)) |
| - dest = ctx.actions.declare_file(src.short_path[len(strip_prefix):]) |
| + (strip_prefix, short_path)) |
| + dest = ctx.actions.declare_file(short_path[len(strip_prefix):]) |
| src_dests.append([src, dest]) |
| |
| if ctx.attr.is_windows: |
