Find here the source for auto-header.el, an Emacs minor mode that can automatically guess what headers to prepend to a C file using information from Man pages.
Note: The insertion mechanism is currently primitive and might
mess up files with fragile or complicated #ifdef constructs.
Auto-header.el is avaliable from GNU ELPA. It can be installed by invoking
M-x package-install RET auto-header RET
You can have auto-header run every time a buffer is saved, by
modifying before-save-hook using the auto-header-mode minor mode:
(add-hook 'c-mode-hook #'auto-header-mode)
Keep in mind that auto-header.el was only written for C in mind, and will emit a warning when used with other major modes.
As auto-header.el is distributed as part of GNU ELPA, and therefore requires a copyright assignment to the FSF, for all non-trivial code contributions.
Auto-header.el is developed on SourceHut.
Bugs, patches, comments or questions can be submitted to my public inbox.
Auto-header.el and all other source files in this directory are distributed under the GNU Public License, Version 3 (like Emacs itself).