Use latest prebuilt toolchain: https://goo.gl/QpX5zM (the one at the top)

New build step has been added, after vita-elf-create you need to run: `vita-make-fself homebrew.velf eboot.bin` **You need to run vita-make-fself on the .velf, not .elf** The resulting eboot.bin can then be put into a .vpk archive, read below

Homebrew installer uses a .vpk format which is just a ZIP file, start from this template: https://github.com/xyzz/Vita_Doom/releases/download/1.0/vitadoom.vpk (try installing it from the shell)
* replace eboot.bin with your eboot.bin
* you can also add template.xml and stuff like icon/background/etc that will be displayed in livearea, check out how it's done in molecular shell (launch it and go to app0)
* make sure to run pngquant on all your png images https://pngquant.org/
* to make param.sfo, use `vita-mksfoex -s TITLE_ID=XXXX00001 "homebrew name" output/param.sfo`

When developing homebrew instead of rebuilding the vpk and reinstalling it on every change, you can upload your new eboot.bin to `ux0:app/TITLE_ID/eboot.bin` over ftp

NB: all files you place to `.vpk` will be available as read-only inside `app0:`. For example, you can add `vpk/something.txt` and later in your app read `app0:something.txt`. In the same way, you can read `app0:sce_sys/param.sfo` and `app0:eboot.bin`.