Use makefile instead of calling build-sphinx ?

[peircej]

Users may have customised their makefile to include additional steps while building the html, but these are then lost when using because instead of calling
make html
it calls
sphinx-build -b html "$doc_dir" "$tmp_dir" $INPUT_SPHINX_OPTIONS

Is there any reason not to call like this?
make html BUILDDIR="$tmp_dir" SPHINXOPTS="$INPUT_SPHINX_OPTIONS"
which would, I think, achieve the same.

The only change later in main.sh would be

rm -rf $tmp_dir/.doctrees
cp -vr $tmp_dir/. $INPUT_TARGET_PATH

becomes

rm -rf $tmp_dir/html/.doctrees
cp -vr $tmp_dir/html/. $INPUT_TARGET_PATH

because make by default will add /html for that build

[SilverRainZ]

Sure, I will add this in v3.