[PATCH v4 1/2] docs: Move rustdoc output, cross-reference it

From: Carlos Bilbao
Date: Wed Dec 07 2022 - 12:31:02 EST


Generate rustdoc documentation with the rest of subsystem's documentation
in Documentation/output. Add a cross reference to the generated rustdoc in
Documentation/rust/index.rst if Sphinx target rustdoc is set.

Reviewed-by: Akira Yokosawa <akiyks@xxxxxxxxx>
Signed-off-by: Carlos Bilbao <carlos.bilbao@xxxxxxx>
---
Documentation/rust/index.rst | 8 ++++++++
rust/Makefile | 15 +++++++++------
2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/Documentation/rust/index.rst b/Documentation/rust/index.rst
index 4ae8c66b94fa..4fc97c1eb1d1 100644
--- a/Documentation/rust/index.rst
+++ b/Documentation/rust/index.rst
@@ -6,6 +6,14 @@ Rust
Documentation related to Rust within the kernel. To start using Rust
in the kernel, please read the quick-start.rst guide.

+.. only:: rustdoc
+
+ You can also browse `rustdoc documentation <rustdoc/kernel/index.html>`_.
+
+.. only:: not rustdoc
+
+ This documentation does not include rustdoc generated information.
+
.. toctree::
:maxdepth: 1

diff --git a/rust/Makefile b/rust/Makefile
index 7700d3853404..080c07048065 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -1,5 +1,8 @@
# SPDX-License-Identifier: GPL-2.0

+# Where to place rustdoc generated documentation
+RUSTDOC_OUTPUT = $(objtree)/Documentation/output/rust/rustdoc
+
always-$(CONFIG_RUST) += target.json
no-clean-files += target.json

@@ -58,7 +61,7 @@ quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $<
OBJTREE=$(abspath $(objtree)) \
$(RUSTDOC) $(if $(rustdoc_host),$(rust_common_flags),$(rust_flags)) \
$(rustc_target_flags) -L$(objtree)/$(obj) \
- --output $(objtree)/$(obj)/doc \
+ --output $(RUSTDOC_OUTPUT) \
--crate-name $(subst rustdoc-,,$@) \
@$(objtree)/include/generated/rustc_cfg $<

@@ -75,15 +78,15 @@ quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $<
# and then retouch the generated files.
rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \
rustdoc-alloc rustdoc-kernel
- $(Q)cp $(srctree)/Documentation/images/logo.svg $(objtree)/$(obj)/doc
- $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(objtree)/$(obj)/doc
- $(Q)find $(objtree)/$(obj)/doc -name '*.html' -type f -print0 | xargs -0 sed -Ei \
+ $(Q)cp $(srctree)/Documentation/images/logo.svg $(RUSTDOC_OUTPUT)
+ $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(RUSTDOC_OUTPUT)
+ $(Q)find $(RUSTDOC_OUTPUT) -name '*.html' -type f -print0 | xargs -0 sed -Ei \
-e 's:rust-logo\.svg:logo.svg:g' \
-e 's:rust-logo\.png:logo.svg:g' \
-e 's:favicon\.svg:logo.svg:g' \
-e 's:<link rel="alternate icon" type="image/png" href="[./]*favicon-(16x16|32x32)\.png">::g'
$(Q)echo '.logo-container > img { object-fit: contain; }' \
- >> $(objtree)/$(obj)/doc/rustdoc.css
+ >> $(RUSTDOC_OUTPUT)/rustdoc.css

rustdoc-macros: private rustdoc_host = yes
rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \
@@ -141,7 +144,7 @@ quiet_cmd_rustdoc_test = RUSTDOC T $<
@$(objtree)/include/generated/rustc_cfg \
$(rustc_target_flags) $(rustdoc_test_target_flags) \
--sysroot $(objtree)/$(obj)/test/sysroot $(rustdoc_test_quiet) \
- -L$(objtree)/$(obj)/test --output $(objtree)/$(obj)/doc \
+ -L$(objtree)/$(obj)/test --output $(RUSTDOC_OUTPUT) \
--crate-name $(subst rusttest-,,$@) $<

# We cannot use `-Zpanic-abort-tests` because some tests are dynamic,
--
2.34.1