CGAL
Dependencies file with tag files and the resulting doxygen "dxy" file
With the fix b9ee8c6 a fix (by @sloriot) was made to fix the issue:
error: Tag file '.../doc_tags/Lab.tag' does not exist or is not a file. Skipping it...
when building the documentation of the (not really supported) Three package.
The fix as is is correct and worked for a clean build, but when using an existing build it didn't work as the Three.dxy configuration file was not rebuild and a remake of the cmake files was not triggered.
The change was made in the file Three/doc/Tree/dependencies and this is not listed as a dependency to regenerate the Three.dxy
In an email discussion it was pointed out by @lrineau that:
The answer is probably https://cmake.org/cmake/help/latest/prop_dir/CMAKE_CONFIGURE_DEPENDS.html
The solution lies probably in Documentation/doc/CMakeLists.txt where a configuration dependency between:
${depend}/doc/${depend}/dependencies and ${CGAL_DOC_DXY_DIR}/${depend}.dxy has to be created, where depend is a package name).
