> The standard output of doxygen is very verbose, and since ninja mixes
> stdout and stderr together it makes it difficult to see any warnings from
> the doxygen run. Therefore, we can just log the standard output to file,
> and only output the stderr to make warnings clear.
[...]
> -doxygen "${DOXYCONF}" | tee doxygen.out
> +doxygen "${DOXYCONF}" > doxygen.out
ninja is printing extra lines:
ninja: Entering directory `build'
[0/1] Running external command doc
Building docs: Doxygen_API HTML_Guides
It makes hard to detect whether all run fine or not.
Can we remove these extra lines with a ninja option?
Can we return an error if there are some errors in doxygen?
