@glacambre, thanks for your PR! By analyzing the history of the files in this pull request, we identified @natemara, @poohzrn and @languitar to be potential reviewers.

Thanks!
I've pushed some fixups. Please consider using a separate branch (and not master) for PRs in the future.

Merged, thanks again.
Please add it to the wiki: https://github.com/neomake/neomake/wiki/Makers

@blueyed @glacambre now everytime a user runs :Neomake, pdflatex creates LaTeX auxiliary files in the current directory (i.e. aux, log, pdf, etc.).
This can be annoying for those that, like me, use latexmk and a custom build directory.

What do you guys think?
pdflatex supports specifying the output directory with the option -output-directory /tmp.
However, this is not portable.

However, this is not portable.

Because of using /tmp? Vim has tempname() that could be used.
Should it be stable across runs then? (at least for the same file)

Getting pdflatex to do real out-of-source builds is a real pain and simply defining --output-directory still breaks a ton of packages. I actually don't think that pdflatex is very useful as a maker without a proper front-end like latexmk just because of all the recompile loops LaTeX requires and potential calls to bibtex, biber, mkglossaries and whatever...

But @aldur, you are free to just disable the maker again by defining g:neomake_tex_enabled_makers. ;)

@languitar, I agree about the usefulness and I disabled it, but I spent a few minutes to understand what was creating that files for me. Since it "pollutes" the user environment, it doesn't seem like a reasonable maker to be enabled by default.

it doesn't seem like a reasonable maker to be enabled by default.

Agreed.
It sounds we should not enable it by default, and also add --output-directory. Do you agree?

Can we use --output-directory /dev/null, or does it need to be a dir really?

Depends on the use case, generally, I would say. If pdflatex is used for linting, that would be ok. Otherwise, if someone would really want to use this to produce a PDF, that would be a bad idea.

OK, disabled it for now, and added a note to https://github.com/neomake/neomake/wiki/Makers.
Thanks for your feedback!