Setup

VHDL-tools expects a correct setup of the packages it relies on

• configure ggtags
• setup projectile by putting it under version control with git

Then, if you plan to use outshine by setting vhdl-tools-use-outshine to true, just don’t forget to

(require 'outshine)
(add-hook 'outline-minor-mode-hook 'outshine-hook-function)

before activating vhdl-tools. Remember to

(add-to-list 'company-begin-commands 'outshine-self-insert-command)

otherwise company idle completion using the capf backed won’t work (see related utilities section below).

Additionally, setting vhdl-tools-manage-folding (off by default) to true will allow auto folding when jumping around, and vhdl-tools-recenter-nb-lines will be used as number of lines from top after jumping.

Finally, have a look at all customization possibilities with

M-x customize-group vhdl-tools.