Does FreeBSD support IPC primitives like those in System V?

Frequently Asked Questions for FreeBSD 2.X : Kernel Configuration : Does FreeBSD support IPC primitives like those in System V?
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8.4. Does FreeBSD support IPC primitives like those in System V?

Yes, FreeBSD supports System V-style IPC. This includes shared memory, messages and semaphores. You need to add the following lines to your kernel config to enable them.

            options    SYSVSHM
            options    "SHMMAXPGS=64"   # 256Kb of sharable memory
            options    SYSVSEM          # enable for semaphores
            options    SYSVMSG          # enable for messaging

Recompile and install.