Add a stamp file to build documentation once #3819
Merged
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The
doc
target will now run only when files are actually modified. This means it won't run 3 times when in the CI documentation job, for instance.The solution is still compatible with CMake 3.5. CMake 3.9 added
doxygen_add_docs
which is incredibly more verbose than theadd_custom_target
, and seems to require we ditch doxyfile.in in favour ofDOXYGEN_*
cmake variables (or at least I wasn't able to make it work with the current doxyfile). Furthermore, CMake 3.16 added theUSE_STAMP_FILE
option to this command.I wasn't able to perfectly use 3.16.5's
doxygen_add_docs
locally. This solution uses a copy-paste of these lines.Moreover, using
DOC_SOURCES_DIR
as is results in:so I changed that line as well.
Finally, the addition of the
.gitignore
is because compilation creates thispcl.tag
file, which might get committed.Current "before"
Current "after"
Fixes #3759