SDL_CreateSemaphore(3) on Linux
The text 1cb5d9f55e8d, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
Creates a new semaphore and assigns an initial value to it.