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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Mon, 14 Nov 2022 16:56:23 +0000
Message-ID: <CAH6eHdS9fZE=rn1qjSmOJVRrpx8MzTXkt=VFxqQKus8UqUnNzg@mail.gmail.com>
Subject: Re: top-level build target that triggers 'make doc-html-doxygen'
To: saifi.khan@nishan.io
Cc: gcc-help <gcc-help@gcc.gnu.org>
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On Mon, 14 Nov 2022 at 16:25, Saifi Khan <saifi.khan@nishan.io> wrote:
>
> On 2022-11-13 09:29, Jonathan Wakely via Gcc-help wrote:
> >
> > There is a doc-install-html target in the $target/libstdc++-v3 dir, but
> > that will also try to build the main manual as well as the doxygen
> > pages.
> >
>
> yes, this seems even better. So, i tried to build the 'doc-install-html'
> target
>
> xsltproc --param toc.section.depth 4 --param generate.consistent.ids 1
> --nonet --xinclude -o
> /opt/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/doc/docbook/html/ \
>   --stringparam chunker.output.encoding UTF-8 \
> /xhtml/chunk.xsl \
> ../../../../src/libstdc++-v3/doc/xml/spine.xml
> warning: failed to load external entity "/xhtml/chunk.xsl"
> cannot parse /xhtml/chunk.xsl
> make[1]: *** [Makefile:1046: stamp-html-docbook] Error 4
> make[1]: Leaving directory
> '/opt/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/doc'
> make: *** [Makefile:784: doc-install-html] Error 2
> make: Leaving directory
> '/opt/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3'
>
> There isn't any 'chunk.xsl' in the entire source tree.
>
> Am i missing something ?

Yes, you're missing a docbook installation.

https://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_hacking.html#doc.docbook