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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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81 lines
2.6 KiB
Text
81 lines
2.6 KiB
Text
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OK, I've grown so tired of having to coax the docs to build every time I
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get round to it that I've decided to note down some of the things that
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are important to know.
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Here goes.
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A) Our documentation should all be Docbook/XML. No SGML.
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B) The source for the documentation is:
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- one or more .xml files, with the main one being gstreamer-(whatever).xml
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- image files
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- in .fig
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- in .png (and maybe others)
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C) We want to generate docs in HTML, PS and PDF
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D) We want to use xmlto to generate these
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THINGS TO DO IN THE SOURCE XML
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------------------------------
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HOW TO HANDLE IMAGES
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--------------------
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* the format of images used is:
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- PNG for html
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- EPS for ps
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- PDF for pdf
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* images may need to be converted from their source format to the end format
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* a file called image.entities is generated that provides two entities:
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ℑ and ℑ
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ℑ is the file extension (png, ps, pdf)
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* all generated images will be put in images/
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HOW THE BUILD WORKS
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-------------------
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1) HTML
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-------
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xmlto html gstreamer-whatever.xml should produce the html docs.
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We do this in the html subdir of the doc builddir.
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images are copied to (builddir)/html/images
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PNGS should be set to all of the png's referenced for html, both
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already there and auto-generated
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2) PS
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-----
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images are converted to .ps files in EPS format. Generated images are
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put in images/
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xmlto ps gstreamer-whatever.xml generates the ps file
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3) PDF
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------
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There are two ways:
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a) ps2pdf is the easiest
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b) we specify ps, PS as the image type, but using xmlto the build will fail
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because it uses ps2pdf internally and it fails to generate the images
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By hand-generating .pdf images before xmlto we can make the build succeed.
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(This is why image-pdf has file ext pdf but type EPS; this tricks xmlto in
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doing the right thing)
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xmlto pdf gstreamer-whatever.xml generates pdf (but seems to fail on the
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FAQ, so for now we use ps2pdf)
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HOW WE SET UP OUR BUILD FOR THE DOCS
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------------------------------------
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make all should build html, ps, and pdf
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html is built in a subdir, with the png/ps images copied there
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ps and pdf are built in the current dir, in one file
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THINGS I'VE LEARNED
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-------------------
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a) for clean builddir != srcdir separation, I wanted to use xmlto --searchpath
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so the source xml could find the built entity file.
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But xmlto --searchpath is (right now) for TeX input, not xml input.
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xsltproc has a --path option (that xmlto doesn't use yet), but it
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resolves single files to $(specified_path)/$(srcdir)/$(file)
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For now, we need to hack around it by copying xml to the build dir.
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