Search notes:

VIM: src/feature.h

feature.h allows to define some preferences for vim. In order to change these preferences, it should be changed before compiling vim.

Definitions of vimrc / startup-initialization files

Some macros are

VIM_DEFAULTS_FILE

VIMRUNTIME/defaults.vim

RUNTIME_DIRNAME

Stores the (generic, whatever that is) name of the runtime files.
The value of RUNTIME_DIRNAME is used in vim_version_dir().

See also

VIM features
When building vim in a Windows environment, some of these macros might be defined in os_dos.h.

Index