linux-kernel - Re: [PATCH v3 1/2] docs: Move rustdoc output, cross-reference it

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Date:   Wed, 7 Dec 2022 07:56:27 +0900
From:   Akira Yokosawa <akiyks@...il.com>
To:     Carlos Bilbao <carlos.bilbao@....com>, corbet@....net,
        ojeda@...nel.org
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        bilbao@...edu, konstantin@...uxfoundation.org,
        Akira Yokosawa <akiyks@...il.com>
Subject: Re: [PATCH v3 1/2] docs: Move rustdoc output, cross-reference it

On Tue, 6 Dec 2022 09:31:50 -0600, Carlos Bilbao wrote:
> 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.
> 
> Signed-off-by: Carlos Bilbao <carlos.bilbao@....com>

Reviewed-by: Akira Yokosawa <akiyks@...il.com>

> ---
>  Documentation/rust/index.rst |  5 +++++
>  rust/Makefile                | 15 +++++++++------
>  2 files changed, 14 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/rust/index.rst b/Documentation/rust/index.rst
> index 4ae8c66b94fa..416d6b3de1e4 100644
> --- a/Documentation/rust/index.rst
> +++ b/Documentation/rust/index.rst
> @@ -6,6 +6,11 @@ Rust
>  Documentation related to Rust within the kernel. To start using Rust
>  in the kernel, please read the quick-start.rst guide.
>  
> +.. only:: html
> +
> +	If this documentation includes rustdoc-generated HTML, the entry
> +	point can be found `here <rustdoc/kernel/index.html>`_.
> +
>  .. 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,