[an error occurred while processing this directive] Frequently Asked Questions for FreeBSD 2.X : Kernel Configuration : Does FreeBSD support IPC primitives like those in System V?
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8.5. 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.

Frequently Asked Questions for FreeBSD 2.X : Kernel Configuration : Does FreeBSD support IPC primitives like those in System V?
Previous: FreeBSD is supposed to come with support for QIC-40/80 drives but when I look, I can't find it.
Next: I have 128 MB of RAM but it seems that the system use only the first 64 MB. What's going on ? [an error occurred while processing this directive]