Allowing the object tree to be generated.
We need to add options to allow copying the ncesseary sources and
assets so the HTML generator can work with them (everything is
relative so we need to copy them in the build directory).
Until now the documentation was not generated from the user provided
main sgml file but it was using a generated one, which lead to a broken
documentation. Starting using it revealed the other bugs fixed in that
commit.
These paths are now generated similar to
NinjaBackend.generate_single_compile where IncludeDirs create includes
of both the build directory path and the source directory path.
This also fixes a bug with include_directories, where the path string
supplied to the IncludeDirs initializer was used for the search path,
instead of the actual location to which it referred. Often, this was a
'.', and not a really useful path.
The extra arguments are typically used to specified the location of
installed API references that gtk-doc can use to create cross links
for symbols.
Fixes#555
There are use case where one may want to specify --sourcedir option
multiple times to glib-compile-resources, which will look for
resources in every specified directory.
By doing this, we also need to get rid of the manual GResource XML
parsing and we opted to use the glib-compile-resources command with
the --generate-dependencies option. This command will solve the
multiple source_dir case for us.
Thibault Saunier