gccmakedep(1) on Linux
The text 5f76baadb0b9, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
create dependencies in makefiles using 'gcc -M'
Flags it lists
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-- -
-a -
-f -
-s