|  | 
 | # Copyright (C) Igor Sysoev | 
 | # Copyright (C) Nginx, Inc. | 
 |  | 
 |  | 
 | NGX_USER=${NGX_USER:-nobody} | 
 |  | 
 | if [ -z "$NGX_GROUP" ]; then | 
 |     if [ $NGX_USER = nobody ]; then | 
 |         if grep nobody /etc/group 2>&1 >/dev/null; then | 
 |             echo "checking for nobody group ... found" | 
 |             NGX_GROUP=nobody | 
 |         else | 
 |             echo "checking for nobody group ... not found" | 
 |  | 
 |             if grep nogroup /etc/group 2>&1 >/dev/null; then | 
 |                 echo "checking for nogroup group ... found" | 
 |                 NGX_GROUP=nogroup | 
 |             else | 
 |                 echo "checking for nogroup group ... not found" | 
 |                 NGX_GROUP=nobody | 
 |             fi | 
 |         fi | 
 |     else | 
 |         NGX_GROUP=$NGX_USER | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="poll()" | 
 | ngx_feature_name= | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <poll.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="int  n; struct pollfd  pl; | 
 |                   pl.fd = 0; | 
 |                   pl.events = 0; | 
 |                   pl.revents = 0; | 
 |                   n = poll(&pl, 1, 0); | 
 |                   if (n == -1) return 1" | 
 | . $NGX_AUTO/feature | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |     EVENT_POLL=NONE | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="/dev/poll" | 
 | ngx_feature_name="NGX_HAVE_DEVPOLL" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/devpoll.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="int  n, dp; struct dvpoll  dvp; | 
 |                   dp = 0; | 
 |                   dvp.dp_fds = NULL; | 
 |                   dvp.dp_nfds = 0; | 
 |                   dvp.dp_timeout = 0; | 
 |                   n = ioctl(dp, DP_POLL, &dvp); | 
 |                   if (n == -1) return 1" | 
 | . $NGX_AUTO/feature | 
 |  | 
 | if [ $ngx_found = yes ]; then | 
 |     CORE_SRCS="$CORE_SRCS $DEVPOLL_SRCS" | 
 |     EVENT_MODULES="$EVENT_MODULES $DEVPOLL_MODULE" | 
 |     EVENT_FOUND=YES | 
 | fi | 
 |  | 
 |  | 
 | if test -z "$NGX_KQUEUE_CHECKED"; then | 
 |     ngx_feature="kqueue" | 
 |     ngx_feature_name="NGX_HAVE_KQUEUE" | 
 |     ngx_feature_run=no | 
 |     ngx_feature_incs="#include <sys/event.h>" | 
 |     ngx_feature_path= | 
 |     ngx_feature_libs= | 
 |     ngx_feature_test="(void) kqueue()" | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |  | 
 |         have=NGX_HAVE_CLEAR_EVENT . $NGX_AUTO/have | 
 |         EVENT_MODULES="$EVENT_MODULES $KQUEUE_MODULE" | 
 |         CORE_SRCS="$CORE_SRCS $KQUEUE_SRCS" | 
 |         EVENT_FOUND=YES | 
 |  | 
 |         ngx_feature="kqueue's NOTE_LOWAT" | 
 |         ngx_feature_name="NGX_HAVE_LOWAT_EVENT" | 
 |         ngx_feature_run=no | 
 |         ngx_feature_incs="#include <sys/event.h>" | 
 |         ngx_feature_path= | 
 |         ngx_feature_libs= | 
 |         ngx_feature_test="struct kevent  kev; | 
 |                           kev.fflags = NOTE_LOWAT; | 
 |                           (void) kev" | 
 |         . $NGX_AUTO/feature | 
 |  | 
 |  | 
 |         ngx_feature="kqueue's EVFILT_TIMER" | 
 |         ngx_feature_name="NGX_HAVE_TIMER_EVENT" | 
 |         ngx_feature_run=yes | 
 |         ngx_feature_incs="#include <sys/event.h> | 
 |                           #include <sys/time.h>" | 
 |         ngx_feature_path= | 
 |         ngx_feature_libs= | 
 |         ngx_feature_test="int      kq; | 
 |                   struct kevent    kev; | 
 |                   struct timespec  ts; | 
 |  | 
 |                   if ((kq = kqueue()) == -1) return 1; | 
 |  | 
 |                   kev.ident = 0; | 
 |                   kev.filter = EVFILT_TIMER; | 
 |                   kev.flags = EV_ADD|EV_ENABLE; | 
 |                   kev.fflags = 0; | 
 |                   kev.data = 1000; | 
 |                   kev.udata = 0; | 
 |  | 
 |                   ts.tv_sec = 0; | 
 |                   ts.tv_nsec = 0; | 
 |  | 
 |                   if (kevent(kq, &kev, 1, &kev, 1, &ts) == -1) return 1; | 
 |  | 
 |                   if (kev.flags & EV_ERROR) return 1;" | 
 |  | 
 |         . $NGX_AUTO/feature | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | if [ "$NGX_SYSTEM" = "NetBSD" ]; then | 
 |  | 
 |     # NetBSD 2.0 incompatibly defines kevent.udata as "intptr_t" | 
 |  | 
 |     cat << END >> $NGX_AUTO_CONFIG_H | 
 |  | 
 | #define NGX_KQUEUE_UDATA_T | 
 |  | 
 | END | 
 |  | 
 | else | 
 |     cat << END >> $NGX_AUTO_CONFIG_H | 
 |  | 
 | #define NGX_KQUEUE_UDATA_T  (void *) | 
 |  | 
 | END | 
 |  | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="crypt()" | 
 | ngx_feature_name= | 
 | ngx_feature_run=no | 
 | ngx_feature_incs= | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="crypt(\"test\", \"salt\");" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     ngx_feature="crypt() in libcrypt" | 
 |     ngx_feature_name= | 
 |     ngx_feature_run=no | 
 |     ngx_feature_incs= | 
 |     ngx_feature_path= | 
 |     ngx_feature_libs=-lcrypt | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         CRYPT_LIB="-lcrypt" | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="F_READAHEAD" | 
 | ngx_feature_name="NGX_HAVE_F_READAHEAD" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <fcntl.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="fcntl(0, F_READAHEAD, 1);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="posix_fadvise()" | 
 | ngx_feature_name="NGX_HAVE_POSIX_FADVISE" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <fcntl.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="posix_fadvise(0, 0, 0, POSIX_FADV_SEQUENTIAL);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="O_DIRECT" | 
 | ngx_feature_name="NGX_HAVE_O_DIRECT" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <fcntl.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="fcntl(0, F_SETFL, O_DIRECT);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | if [ $ngx_found = yes -a "$NGX_SYSTEM" = "Linux" ]; then | 
 |     have=NGX_HAVE_ALIGNED_DIRECTIO . $NGX_AUTO/have | 
 | fi | 
 |  | 
 | ngx_feature="F_NOCACHE" | 
 | ngx_feature_name="NGX_HAVE_F_NOCACHE" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <fcntl.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="fcntl(0, F_NOCACHE, 1);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="directio()" | 
 | ngx_feature_name="NGX_HAVE_DIRECTIO" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/types.h> | 
 |                   #include <sys/fcntl.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="directio(0, DIRECTIO_ON);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="statfs()" | 
 | ngx_feature_name="NGX_HAVE_STATFS" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="$NGX_INCLUDE_SYS_PARAM_H | 
 |                   $NGX_INCLUDE_SYS_MOUNT_H | 
 |                   $NGX_INCLUDE_SYS_VFS_H" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct statfs  fs; | 
 |                   statfs(\".\", &fs);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="statvfs()" | 
 | ngx_feature_name="NGX_HAVE_STATVFS" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/types.h> | 
 |                   #include <sys/statvfs.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct statvfs  fs; | 
 |                   statvfs(\".\", &fs);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="dlopen()" | 
 | ngx_feature_name="NGX_HAVE_DLOPEN" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <dlfcn.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="dlopen(NULL, RTLD_NOW | RTLD_GLOBAL); dlsym(NULL, \"\")" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     ngx_feature="dlopen() in libdl" | 
 |     ngx_feature_libs="-ldl" | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         CORE_LIBS="$CORE_LIBS -ldl" | 
 |         NGX_LIBDL="-ldl" | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="sched_yield()" | 
 | ngx_feature_name="NGX_HAVE_SCHED_YIELD" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sched.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="sched_yield()" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     ngx_feature="sched_yield() in librt" | 
 |     ngx_feature_libs="-lrt" | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         CORE_LIBS="$CORE_LIBS -lrt" | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="sched_setaffinity()" | 
 | ngx_feature_name="NGX_HAVE_SCHED_SETAFFINITY" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sched.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="cpu_set_t mask; | 
 |                   CPU_ZERO(&mask); | 
 |                   sched_setaffinity(0, sizeof(cpu_set_t), &mask)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="SO_SETFIB" | 
 | ngx_feature_name="NGX_HAVE_SETFIB" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_SETFIB, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="SO_REUSEPORT" | 
 | ngx_feature_name="NGX_HAVE_REUSEPORT" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_REUSEPORT, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="SO_ACCEPTFILTER" | 
 | ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # OpenBSD bind to any address for transparent proxying | 
 |  | 
 | ngx_feature="SO_BINDANY" | 
 | ngx_feature_name="NGX_HAVE_TRANSPARENT_PROXY" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_BINDANY, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # Linux transparent proxying | 
 |  | 
 | ngx_feature="IP_TRANSPARENT" | 
 | ngx_feature_name="NGX_HAVE_TRANSPARENT_PROXY" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_TRANSPARENT, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # FreeBSD bind to any address for transparent proxying | 
 |  | 
 | ngx_feature="IP_BINDANY" | 
 | ngx_feature_name="NGX_HAVE_TRANSPARENT_PROXY" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_BINDANY, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # Linux IP_BIND_ADDRESS_NO_PORT | 
 |  | 
 | ngx_feature="IP_BIND_ADDRESS_NO_PORT" | 
 | ngx_feature_name="NGX_HAVE_IP_BIND_ADDRESS_NO_PORT" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_BIND_ADDRESS_NO_PORT, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # BSD way to get IPv4 datagram destination address | 
 |  | 
 | ngx_feature="IP_RECVDSTADDR" | 
 | ngx_feature_name="NGX_HAVE_IP_RECVDSTADDR" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_RECVDSTADDR, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # BSD way to set IPv4 datagram source address | 
 |  | 
 | ngx_feature="IP_SENDSRCADDR" | 
 | ngx_feature_name="NGX_HAVE_IP_SENDSRCADDR" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_SENDSRCADDR, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # Linux way to get IPv4 datagram destination address | 
 |  | 
 | ngx_feature="IP_PKTINFO" | 
 | ngx_feature_name="NGX_HAVE_IP_PKTINFO" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct in_pktinfo  pkt; | 
 |                   pkt.ipi_spec_dst.s_addr = INADDR_ANY; | 
 |                   (void) pkt; | 
 |                   setsockopt(0, IPPROTO_IP, IP_PKTINFO, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # RFC 3542 way to get IPv6 datagram destination address | 
 |  | 
 | ngx_feature="IPV6_RECVPKTINFO" | 
 | ngx_feature_name="NGX_HAVE_IPV6_RECVPKTINFO" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_IPV6, IPV6_RECVPKTINFO, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="TCP_DEFER_ACCEPT" | 
 | ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h> | 
 |                   #include <netinet/tcp.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_DEFER_ACCEPT, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="TCP_KEEPIDLE" | 
 | ngx_feature_name="NGX_HAVE_KEEPALIVE_TUNABLE" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h> | 
 |                   #include <netinet/tcp.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_KEEPIDLE, NULL, 0); | 
 |                   setsockopt(0, IPPROTO_TCP, TCP_KEEPINTVL, NULL, 0); | 
 |                   setsockopt(0, IPPROTO_TCP, TCP_KEEPCNT, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="TCP_FASTOPEN" | 
 | ngx_feature_name="NGX_HAVE_TCP_FASTOPEN" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h> | 
 |                   #include <netinet/tcp.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_FASTOPEN, NULL, 0)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="TCP_INFO" | 
 | ngx_feature_name="NGX_HAVE_TCP_INFO" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h> | 
 |                   #include <netinet/tcp.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="socklen_t optlen = sizeof(struct tcp_info); | 
 |                   struct tcp_info ti; | 
 |                   ti.tcpi_rtt = 0; | 
 |                   ti.tcpi_rttvar = 0; | 
 |                   ti.tcpi_snd_cwnd = 0; | 
 |                   ti.tcpi_rcv_space = 0; | 
 |                   getsockopt(0, IPPROTO_TCP, TCP_INFO, &ti, &optlen)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="accept4()" | 
 | ngx_feature_name="NGX_HAVE_ACCEPT4" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="accept4(0, NULL, NULL, SOCK_NONBLOCK)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 | if [ $NGX_FILE_AIO = YES ]; then | 
 |  | 
 |     ngx_feature="kqueue AIO support" | 
 |     ngx_feature_name="NGX_HAVE_FILE_AIO" | 
 |     ngx_feature_run=no | 
 |     ngx_feature_incs="#include <aio.h>" | 
 |     ngx_feature_path= | 
 |     ngx_feature_libs= | 
 |     ngx_feature_test="struct aiocb  iocb; | 
 |                       iocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; | 
 |                       (void) aio_read(&iocb)" | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         CORE_SRCS="$CORE_SRCS $FILE_AIO_SRCS" | 
 |     fi | 
 |  | 
 |     if [ $ngx_found = no ]; then | 
 |  | 
 |         ngx_feature="Linux AIO support" | 
 |         ngx_feature_name="NGX_HAVE_FILE_AIO" | 
 |         ngx_feature_run=no | 
 |         ngx_feature_incs="#include <linux/aio_abi.h> | 
 |                           #include <sys/eventfd.h>" | 
 |         ngx_feature_path= | 
 |         ngx_feature_libs= | 
 |         ngx_feature_test="struct iocb  iocb; | 
 |                           iocb.aio_lio_opcode = IOCB_CMD_PREAD; | 
 |                           iocb.aio_flags = IOCB_FLAG_RESFD; | 
 |                           iocb.aio_resfd = -1; | 
 |                           (void) iocb; | 
 |                           (void) eventfd(0, 0)" | 
 |         . $NGX_AUTO/feature | 
 |  | 
 |         if [ $ngx_found = yes ]; then | 
 |             have=NGX_HAVE_EVENTFD . $NGX_AUTO/have | 
 |             have=NGX_HAVE_SYS_EVENTFD_H . $NGX_AUTO/have | 
 |             CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS" | 
 |         fi | 
 |     fi | 
 |  | 
 |     if [ $ngx_found = no ]; then | 
 |  | 
 |         ngx_feature="Linux AIO support (SYS_eventfd)" | 
 |         ngx_feature_incs="#include <linux/aio_abi.h> | 
 |                           #include <sys/syscall.h>" | 
 |         ngx_feature_test="struct iocb  iocb; | 
 |                           iocb.aio_lio_opcode = IOCB_CMD_PREAD; | 
 |                           iocb.aio_flags = IOCB_FLAG_RESFD; | 
 |                           iocb.aio_resfd = -1; | 
 |                           (void) iocb; | 
 |                           (void) SYS_eventfd" | 
 |         . $NGX_AUTO/feature | 
 |  | 
 |         if [ $ngx_found = yes ]; then | 
 |             have=NGX_HAVE_EVENTFD . $NGX_AUTO/have | 
 |             CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS" | 
 |         fi | 
 |     fi | 
 |  | 
 |     if [ $ngx_found = no ]; then | 
 |         cat << END | 
 |  | 
 | $0: no supported file AIO was found | 
 | Currently file AIO is supported on FreeBSD 4.3+ and Linux 2.6.22+ only | 
 |  | 
 | END | 
 |         exit 1 | 
 |     fi | 
 |  | 
 | else | 
 |  | 
 |     ngx_feature="eventfd()" | 
 |     ngx_feature_name="NGX_HAVE_EVENTFD" | 
 |     ngx_feature_run=no | 
 |     ngx_feature_incs="#include <sys/eventfd.h>" | 
 |     ngx_feature_path= | 
 |     ngx_feature_libs= | 
 |     ngx_feature_test="(void) eventfd(0, 0)" | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         have=NGX_HAVE_SYS_EVENTFD_H . $NGX_AUTO/have | 
 |     fi | 
 |  | 
 |     if [ $ngx_found = no ]; then | 
 |  | 
 |         ngx_feature="eventfd() (SYS_eventfd)" | 
 |         ngx_feature_incs="#include <sys/syscall.h>" | 
 |         ngx_feature_test="(void) SYS_eventfd" | 
 |         . $NGX_AUTO/feature | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | have=NGX_HAVE_UNIX_DOMAIN . $NGX_AUTO/have | 
 |  | 
 | ngx_feature_libs= | 
 |  | 
 |  | 
 | # C types | 
 |  | 
 | ngx_type="int"; . $NGX_AUTO/types/sizeof | 
 |  | 
 | ngx_type="long"; . $NGX_AUTO/types/sizeof | 
 |  | 
 | ngx_type="long long"; . $NGX_AUTO/types/sizeof | 
 |  | 
 | ngx_type="void *"; . $NGX_AUTO/types/sizeof; ngx_ptr_size=$ngx_size | 
 | ngx_param=NGX_PTR_SIZE; ngx_value=$ngx_size; . $NGX_AUTO/types/value | 
 |  | 
 |  | 
 | # POSIX types | 
 |  | 
 | NGX_INCLUDE_AUTO_CONFIG_H="#include \"ngx_auto_config.h\"" | 
 |  | 
 | ngx_type="uint32_t"; ngx_types="u_int32_t"; . $NGX_AUTO/types/typedef | 
 | ngx_type="uint64_t"; ngx_types="u_int64_t"; . $NGX_AUTO/types/typedef | 
 |  | 
 | ngx_type="sig_atomic_t"; ngx_types="int"; . $NGX_AUTO/types/typedef | 
 | . $NGX_AUTO/types/sizeof | 
 | ngx_param=NGX_SIG_ATOMIC_T_SIZE; ngx_value=$ngx_size; . $NGX_AUTO/types/value | 
 |  | 
 | ngx_type="socklen_t"; ngx_types="int"; . $NGX_AUTO/types/typedef | 
 |  | 
 | ngx_type="in_addr_t"; ngx_types="uint32_t u_int32_t"; . $NGX_AUTO/types/typedef | 
 |  | 
 | ngx_type="in_port_t"; ngx_types="u_short"; . $NGX_AUTO/types/typedef | 
 |  | 
 | ngx_type="rlim_t"; ngx_types="int"; . $NGX_AUTO/types/typedef | 
 |  | 
 | . $NGX_AUTO/types/uintptr_t | 
 |  | 
 | . $NGX_AUTO/endianness | 
 |  | 
 | ngx_type="size_t"; . $NGX_AUTO/types/sizeof | 
 | ngx_param=NGX_MAX_SIZE_T_VALUE; ngx_value=$ngx_max_value; . $NGX_AUTO/types/value | 
 | ngx_param=NGX_SIZE_T_LEN; ngx_value=$ngx_max_len; . $NGX_AUTO/types/value | 
 |  | 
 | ngx_type="off_t"; . $NGX_AUTO/types/sizeof | 
 | ngx_param=NGX_MAX_OFF_T_VALUE; ngx_value=$ngx_max_value; . $NGX_AUTO/types/value | 
 | ngx_param=NGX_OFF_T_LEN; ngx_value=$ngx_max_len; . $NGX_AUTO/types/value | 
 |  | 
 | ngx_type="time_t"; . $NGX_AUTO/types/sizeof | 
 | ngx_param=NGX_TIME_T_SIZE; ngx_value=$ngx_size; . $NGX_AUTO/types/value | 
 | ngx_param=NGX_TIME_T_LEN; ngx_value=$ngx_max_len; . $NGX_AUTO/types/value | 
 | ngx_param=NGX_MAX_TIME_T_VALUE; ngx_value=$ngx_max_value; . $NGX_AUTO/types/value | 
 |  | 
 |  | 
 | # syscalls, libc calls and some features | 
 |  | 
 |  | 
 | ngx_feature="AF_INET6" | 
 | ngx_feature_name="NGX_HAVE_INET6" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <netinet/in.h> | 
 |                   #include <arpa/inet.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct sockaddr_in6  sin6; | 
 |                   sin6.sin6_family = AF_INET6; | 
 |                   (void) sin6" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="setproctitle()" | 
 | ngx_feature_name="NGX_HAVE_SETPROCTITLE" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <stdlib.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs=$NGX_SETPROCTITLE_LIB | 
 | ngx_feature_test="setproctitle(\"test\");" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="pread()" | 
 | ngx_feature_name="NGX_HAVE_PREAD" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs= | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="char buf[1]; ssize_t n; n = pread(0, buf, 1, 0); | 
 |                   if (n == -1) return 1" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="pwrite()" | 
 | ngx_feature_name="NGX_HAVE_PWRITE" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs= | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="char buf[1]; ssize_t n; n = pwrite(1, buf, 1, 0); | 
 |                   if (n == -1) return 1" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | # pwritev() was introduced in FreeBSD 6 and Linux 2.6.30, glibc 2.10 | 
 |  | 
 | ngx_feature="pwritev()" | 
 | ngx_feature_name="NGX_HAVE_PWRITEV" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs='#include <sys/uio.h>' | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="char buf[1]; struct iovec vec[1]; ssize_t n; | 
 |                   vec[0].iov_base = buf; | 
 |                   vec[0].iov_len = 1; | 
 |                   n = pwritev(1, vec, 1, 0); | 
 |                   if (n == -1) return 1" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="sys_nerr" | 
 | ngx_feature_name="NGX_SYS_NERR" | 
 | ngx_feature_run=value | 
 | ngx_feature_incs='#include <errno.h> | 
 |                   #include <stdio.h>' | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test='printf("%d", sys_nerr);' | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     # Cygiwn defines _sys_nerr | 
 |     ngx_feature="_sys_nerr" | 
 |     ngx_feature_name="NGX_SYS_NERR" | 
 |     ngx_feature_run=value | 
 |     ngx_feature_incs='#include <errno.h> | 
 |                       #include <stdio.h>' | 
 |     ngx_feature_path= | 
 |     ngx_feature_libs= | 
 |     ngx_feature_test='printf("%d", _sys_nerr);' | 
 |     . $NGX_AUTO/feature | 
 | fi | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     # Solaris has no sys_nerr | 
 |     ngx_feature='maximum errno' | 
 |     ngx_feature_name=NGX_SYS_NERR | 
 |     ngx_feature_run=value | 
 |     ngx_feature_incs='#include <errno.h> | 
 |                       #include <string.h> | 
 |                       #include <stdio.h>' | 
 |     ngx_feature_path= | 
 |     ngx_feature_libs= | 
 |     ngx_feature_test='int  n; | 
 |                       char *p; | 
 |                       for (n = 1; n < 1000; n++) { | 
 |                           errno = 0; | 
 |                           p = strerror(n); | 
 |                           if (errno == EINVAL | 
 |                               || p == NULL | 
 |                               || strncmp(p, "Unknown error", 13) == 0) | 
 |                           { | 
 |                               break; | 
 |                           } | 
 |                       } | 
 |                       printf("%d", n);' | 
 |     . $NGX_AUTO/feature | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="localtime_r()" | 
 | ngx_feature_name="NGX_HAVE_LOCALTIME_R" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <time.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct tm t; time_t c=0; localtime_r(&c, &t)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="clock_gettime(CLOCK_MONOTONIC)" | 
 | ngx_feature_name="NGX_HAVE_CLOCK_MONOTONIC" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <time.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct timespec ts; clock_gettime(CLOCK_MONOTONIC, &ts)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     # Linux before glibc 2.17, notably CentOS 6 | 
 |  | 
 |     ngx_feature="clock_gettime(CLOCK_MONOTONIC) in librt" | 
 |     ngx_feature_libs="-lrt" | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         CORE_LIBS="$CORE_LIBS -lrt" | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="posix_memalign()" | 
 | ngx_feature_name="NGX_HAVE_POSIX_MEMALIGN" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <stdlib.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="void *p; int n; n = posix_memalign(&p, 4096, 4096); | 
 |                   if (n != 0) return 1" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="memalign()" | 
 | ngx_feature_name="NGX_HAVE_MEMALIGN" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <stdlib.h> | 
 |                   #include <malloc.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="void *p; p = memalign(4096, 4096); | 
 |                   if (p == NULL) return 1" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="mmap(MAP_ANON|MAP_SHARED)" | 
 | ngx_feature_name="NGX_HAVE_MAP_ANON" | 
 | ngx_feature_run=yes | 
 | ngx_feature_incs="#include <sys/mman.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="void *p; | 
 |                   p = mmap(NULL, 4096, PROT_READ|PROT_WRITE, | 
 |                            MAP_ANON|MAP_SHARED, -1, 0); | 
 |                   if (p == MAP_FAILED) return 1;" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature='mmap("/dev/zero", MAP_SHARED)' | 
 | ngx_feature_name="NGX_HAVE_MAP_DEVZERO" | 
 | ngx_feature_run=yes | 
 | ngx_feature_incs="#include <sys/mman.h> | 
 |                   #include <sys/stat.h> | 
 |                   #include <fcntl.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test='void *p; int  fd; | 
 |                   fd = open("/dev/zero", O_RDWR); | 
 |                   p = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); | 
 |                   if (p == MAP_FAILED) return 1;' | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="System V shared memory" | 
 | ngx_feature_name="NGX_HAVE_SYSVSHM" | 
 | ngx_feature_run=yes | 
 | ngx_feature_incs="#include <sys/ipc.h> | 
 |                   #include <sys/shm.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="int  id; | 
 |                   id = shmget(IPC_PRIVATE, 4096, (SHM_R|SHM_W|IPC_CREAT)); | 
 |                   if (id == -1) return 1; | 
 |                   shmctl(id, IPC_RMID, NULL);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="POSIX semaphores" | 
 | ngx_feature_name="NGX_HAVE_POSIX_SEM" | 
 | ngx_feature_run=yes | 
 | ngx_feature_incs="#include <semaphore.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="sem_t  sem; | 
 |                   if (sem_init(&sem, 1, 0) == -1) return 1; | 
 |                   sem_destroy(&sem);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     # Linux has POSIX semaphores in libpthread | 
 |     ngx_feature="POSIX semaphores in libpthread" | 
 |     ngx_feature_libs=-lpthread | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         CORE_LIBS="$CORE_LIBS -lpthread" | 
 |         NGX_LIBPTHREAD="-lpthread" | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | if [ $ngx_found = no ]; then | 
 |  | 
 |     # Solaris has POSIX semaphores in librt | 
 |     ngx_feature="POSIX semaphores in librt" | 
 |     ngx_feature_libs=-lrt | 
 |     . $NGX_AUTO/feature | 
 |  | 
 |     if [ $ngx_found = yes ]; then | 
 |         CORE_LIBS="$CORE_LIBS -lrt" | 
 |     fi | 
 | fi | 
 |  | 
 |  | 
 | ngx_feature="struct msghdr.msg_control" | 
 | ngx_feature_name="NGX_HAVE_MSGHDR_MSG_CONTROL" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/socket.h> | 
 |                   #include <stdio.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct msghdr  msg; | 
 |                   printf(\"%d\", (int) sizeof(msg.msg_control))" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="ioctl(FIONBIO)" | 
 | ngx_feature_name="NGX_HAVE_FIONBIO" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/ioctl.h> | 
 |                   #include <stdio.h> | 
 |                   $NGX_INCLUDE_SYS_FILIO_H" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="int i = FIONBIO; printf(\"%d\", i)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="ioctl(FIONREAD)" | 
 | ngx_feature_name="NGX_HAVE_FIONREAD" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/ioctl.h> | 
 |                   #include <stdio.h> | 
 |                   $NGX_INCLUDE_SYS_FILIO_H" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="int i = FIONREAD; printf(\"%d\", i)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="struct tm.tm_gmtoff" | 
 | ngx_feature_name="NGX_HAVE_GMTOFF" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <time.h> | 
 |                   #include <stdio.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct tm  tm; tm.tm_gmtoff = 0; | 
 |                   printf(\"%d\", (int) tm.tm_gmtoff)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="struct dirent.d_namlen" | 
 | ngx_feature_name="NGX_HAVE_D_NAMLEN" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <dirent.h> | 
 |                   #include <stdio.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct dirent  dir; dir.d_namlen = 0; | 
 |                   printf(\"%d\", (int) dir.d_namlen)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="struct dirent.d_type" | 
 | ngx_feature_name="NGX_HAVE_D_TYPE" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <dirent.h> | 
 |                   #include <stdio.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct dirent  dir; dir.d_type = DT_REG; | 
 |                   printf(\"%d\", (int) dir.d_type)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="sysconf(_SC_NPROCESSORS_ONLN)" | 
 | ngx_feature_name="NGX_HAVE_SC_NPROCESSORS_ONLN" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs= | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="sysconf(_SC_NPROCESSORS_ONLN)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="sysconf(_SC_LEVEL1_DCACHE_LINESIZE)" | 
 | ngx_feature_name="NGX_HAVE_LEVEL1_DCACHE_LINESIZE" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs= | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="sysconf(_SC_LEVEL1_DCACHE_LINESIZE)" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="openat(), fstatat()" | 
 | ngx_feature_name="NGX_HAVE_OPENAT" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/types.h> | 
 |                   #include <sys/stat.h> | 
 |                   #include <fcntl.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test="struct stat sb; | 
 |                   openat(AT_FDCWD, \".\", O_RDONLY|O_NOFOLLOW); | 
 |                   fstatat(AT_FDCWD, \".\", &sb, AT_SYMLINK_NOFOLLOW);" | 
 | . $NGX_AUTO/feature | 
 |  | 
 |  | 
 | ngx_feature="getaddrinfo()" | 
 | ngx_feature_name="NGX_HAVE_GETADDRINFO" | 
 | ngx_feature_run=no | 
 | ngx_feature_incs="#include <sys/types.h> | 
 |                   #include <sys/socket.h> | 
 |                   #include <netdb.h>" | 
 | ngx_feature_path= | 
 | ngx_feature_libs= | 
 | ngx_feature_test='struct addrinfo *res; | 
 |                   if (getaddrinfo("localhost", NULL, NULL, &res) != 0) return 1; | 
 |                   freeaddrinfo(res)' | 
 | . $NGX_AUTO/feature |