Rustdoc rules now share a code path with Rustc rules for more consistency

.bazelci/presubmit.yml

@@ -15,9 +15,6 @@ default_windows_targets: &default_windows_targets
   - "-//test/proto/..."
   - "-//tools/rust_analyzer/..."
   - "-//test/rustfmt/..."
-  # rust_doc_test targets are currently broken on windows
-  # see: https://github.com/bazelbuild/rules_rust/issues/887
-  - "-//test/chained_direct_deps:mod3_doc_test"
 tasks:
   ubuntu2004:
     build_targets: *default_linux_targets
@@ -33,8 +30,6 @@ tasks:
       - "//..."
       - "//test/..."
       - "-//test/conflicting_deps:conflicting_deps_test"
-      # rust_doc_test is likely not fully sandboxed
-      - "-//test/chained_direct_deps:mod3_doc_test"
   macos:
     build_targets: *default_macos_targets
     test_targets: *default_macos_targets
@@ -64,8 +59,6 @@ tasks:
       - "..."
       - "//test/..."
       - "-//test/conflicting_deps:conflicting_deps_test"
-      # rust_doc_test is likely not fully sandboxed
-      - "-//test/chained_direct_deps:mod3_doc_test"
     build_flags: *aspects_flags
   rbe_ubuntu1604_rolling_with_aspects:
     name: RBE Rolling Bazel Version With Aspects
@@ -79,8 +72,6 @@ tasks:
       - "..."
       - "//test/..."
       - "-//test/conflicting_deps:conflicting_deps_test"
-      # rust_doc_test is likely not fully sandboxed
-      - "-//test/chained_direct_deps:mod3_doc_test"
     build_flags: *aspects_flags
     soft_fail: yes
     bazel: "rolling"
@@ -209,9 +200,6 @@ tasks:
       - "//..."
       # TODO: This requires an updated `rules_foreign_cc`
       - "-//sys/..."
-      # rust_doc_test is likely not fully sandboxed
-      - "-//fibonacci:fibonacci_doc_test"
-      - "-//hello_lib:hello_lib_doc_test"
       # See https://github.com/bazelbuild/bazel/issues/9987
       - "-//ffi/rust_calling_c:matrix_dylib_test"
       # The bindgen rules currently do not work on RBE
@@ -255,10 +243,6 @@ tasks:
       - "-//proto/..."
       # The wasm rules do not work on windows
       - "-//wasm/..."
-      # rust_doc_test targets are currently broken on windows
-      # see: https://github.com/bazelbuild/rules_rust/issues/887
-      - "-//hello_lib:hello_lib_doc_test"
-      - "-//fibonacci:fibonacci_doc_test"
     build_targets: *windows_targets
     test_targets: *windows_targets
   crate_universe_examples_ubuntu2004:

docs/flatten.md

@@ -546,7 +546,7 @@ Running `bazel test //hello_lib:hello_lib_doc_test` will run all documentation t
 | Name  | Description | Type | Mandatory | Default |
 | :------------- | :------------- | :------------- | :------------- | :------------- |
 | <a id="rust_doc_test-name"></a>name |  A unique name for this target.   | <a href="https://bazel.build/docs/build-ref.html#name">Name</a> | required |  |
-| <a id="rust_doc_test-crate"></a>crate |  The label of the target to generate code documentation for.<br><br><code>rust_doc_test</code> can generate HTML code documentation for the source files of <code>rust_library</code> or <code>rust_binary</code> targets.   | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
+| <a id="rust_doc_test-crate"></a>crate |  The label of the target to generate code documentation for. <code>rust_doc_test</code> can generate HTML code documentation for the source files of <code>rust_library</code> or <code>rust_binary</code> targets.   | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
 | <a id="rust_doc_test-dep"></a>dep |  __deprecated__: use <code>crate</code>   | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
 
 

docs/rust_doc.md

@@ -115,7 +115,7 @@ Running `bazel test //hello_lib:hello_lib_doc_test` will run all documentation t
 | Name  | Description | Type | Mandatory | Default |
 | :------------- | :------------- | :------------- | :------------- | :------------- |
 | <a id="rust_doc_test-name"></a>name |  A unique name for this target.   | <a href="https://bazel.build/docs/build-ref.html#name">Name</a> | required |  |
-| <a id="rust_doc_test-crate"></a>crate |  The label of the target to generate code documentation for.<br><br><code>rust_doc_test</code> can generate HTML code documentation for the source files of <code>rust_library</code> or <code>rust_binary</code> targets.   | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
+| <a id="rust_doc_test-crate"></a>crate |  The label of the target to generate code documentation for. <code>rust_doc_test</code> can generate HTML code documentation for the source files of <code>rust_library</code> or <code>rust_binary</code> targets.   | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
 | <a id="rust_doc_test-dep"></a>dep |  __deprecated__: use <code>crate</code>   | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
 
 

rust/private/rustc.bzl

@@ -460,7 +460,9 @@ def construct_arguments(
         build_flags_files,
         emit = ["dep-info", "link"],
         force_all_deps_direct = False,
-        stamp = False):
+        force_link = False,
+        stamp = False,
+        remap_path_prefix = "."):
     """Builds an Args object containing common rustc flags
 
     Args:
@@ -482,8 +484,10 @@ def construct_arguments(
         emit (list): Values for the --emit flag to rustc.
         force_all_deps_direct (bool, optional): Whether to pass the transitive rlibs with --extern
             to the commandline as opposed to -L.
+        force_link (bool, optional): Whether to add link flags to the command regardless of `emit`.
         stamp (bool, optional): Whether or not workspace status stamping is enabled. For more details see
             https://docs.bazel.build/versions/main/user-manual.html#flag--stamp
+        remap_path_prefix (str, optional): A value used to remap `${pwd}` to. If set to a falsey value, no prefix will be set.
 
     Returns:
         tuple: A tuple of the following items
@@ -576,9 +580,11 @@ def construct_arguments(
     rustc_flags.add("--codegen=debuginfo=" + compilation_mode.debug_info)
 
     # For determinism to help with build distribution and such
-    rustc_flags.add("--remap-path-prefix=${pwd}=.")
+    if remap_path_prefix:
+        rustc_flags.add("--remap-path-prefix=${{pwd}}={}".format(remap_path_prefix))
 
-    rustc_flags.add("--emit=" + ",".join(emit_with_paths))
+    if emit:
+        rustc_flags.add("--emit=" + ",".join(emit_with_paths))
     rustc_flags.add("--color=always")
     rustc_flags.add("--target=" + toolchain.target_flag_value)
     if hasattr(attr, "crate_features"):
@@ -604,11 +610,14 @@ def construct_arguments(
     add_edition_flags(rustc_flags, crate_info)
 
     # Link!
-    if "link" in emit:
+    if "link" in emit or force_link:
         # Rust's built-in linker can handle linking wasm files. We don't want to attempt to use the cc
         # linker since it won't understand.
         if toolchain.target_arch != "wasm32":
-            rpaths = _compute_rpaths(toolchain, output_dir, dep_info)
+            if output_dir:
+                rpaths = _compute_rpaths(toolchain, output_dir, dep_info)
+            else:
+                rpaths = depset([])
             ld, link_args, link_env = get_linker_and_args(ctx, attr, cc_toolchain, feature_configuration, rpaths)
             env.update(link_env)
             rustc_flags.add("--codegen=linker=" + ld)