vhdl-makefile-default-targets

vhdl-makefile-default-targets is a variable defined in `vhdl-mode.el'.
Its value is

("all" "clean" "library")

Documentation:
List of default target names in Makefiles.
Automatically generated Makefiles include three default targets to compile
the entire design, clean the entire design and to create the design library.
This option allows you to change the names of these targets to avoid conflicts
with other user Makefiles.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.3 of Emacs.