### Berkeley DB Reference Guide: Building Berkeley DB for UNIX systems |

# FreeBSD

1. I can't compile and run multi-threaded applications.

   Special compile-time flags are required when compiling threaded applications on FreeBSD. If you are compiling a threaded application, you must compile with the _THREAD_SAFE and -pthread flags:

   >     cc -D_THREAD_SAFE -pthread ...

   The Berkeley DB library will automatically build with the correct options.

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