# USE_LUA : enable Lua support.
# USE_FUTEX : enable use of futex on kernel 2.6. Automatic.
# USE_ACCEPT4 : enable use of accept4() on linux. Automatic.
+# USE_CLOSEFROM : enable use of closefrom() on *bsd, solaris. Automatic.
# USE_PRCTL : enable use of prctl(). Automatic.
# USE_ZLIB : enable zlib library support.
# USE_SLZ : enable slz library instead of zlib (pick at most one).
USE_STATIC_PCRE USE_STATIC_PCRE2 USE_TPROXY USE_LINUX_TPROXY \
USE_LINUX_SPLICE USE_LIBCRYPT USE_CRYPT_H \
USE_GETADDRINFO USE_OPENSSL USE_LUA USE_FUTEX USE_ACCEPT4 \
- USE_ZLIB USE_SLZ USE_CPU_AFFINITY USE_TFO USE_NS \
+ USE_CLOSEFROM USE_ZLIB USE_SLZ USE_CPU_AFFINITY USE_TFO USE_NS \
USE_DL USE_RT USE_DEVICEATLAS USE_51DEGREES USE_WURFL USE_SYSTEMD \
USE_OBSOLETE_LINKER USE_PRCTL USE_THREAD_DUMP USE_EVPORTS