auto/os/features

# Copyright (C) Igor Sysoev


NGX_USER=${NGX_USER:-nobody}

if [ -z "$NGX_GROUP" -a $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


ngx_feature="poll()"
ngx_feature_name=
ngx_feature_run=no
ngx_feature_incs="#include <poll.h>"
ngx_feature_libs=
ngx_feature_test="int  n, dp; struct pollfd  pl;
                  dp = 0;
                  pl.fd = 0;
                  pl.events = 0;
                  pl.revents = 0;
                  n = poll(&pl, 1, 0)"
. 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_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)"
. 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_libs=
    ngx_feature_test="int kq; kq = kqueue()"
    . auto/feature

    if [ $ngx_found = yes ]; then

        have=NGX_HAVE_CLEAR_EVENT . 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_libs=
        ngx_feature_test="struct kevent  kev;
                          kev.fflags = NOTE_LOWAT;"
        . 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_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;"

        . auto/feature


        if [ "$NGX_SYSTEM" = "Darwin" ]; then

            ngx_feature="MacOSX 64-bit kqueue millisecond timeout bug"
            ngx_feature_name=
            ngx_feature_run=bug
            ngx_feature_incs="#include <sys/event.h>
#include <sys/time.h>"
            ngx_feature_libs=
            ngx_feature_test="int  kq;
                  struct kevent    kev;
                  struct timespec  ts;
                  struct timeval   tv, tv0;

                  kq = kqueue();

                  ts.tv_sec = 0;
                  ts.tv_nsec = 999000000;

                  gettimeofday(&tv, 0);
                  kevent(kq, NULL, 0, &kev, 1, &ts);
                  gettimeofday(&tv0, 0);
                  timersub(&tv0, &tv, &tv);

                  if (tv.tv_sec * 1000000 + tv.tv_usec < 900000) return 1;"

            . auto/feature

            ngx_macosx_kevent_bug=$ngx_found
        fi
    fi
fi


if [ ".$ngx_macosx_kevent_bug" = .yes ]; then

    cat << END >> $NGX_AUTO_CONFIG_H

#define NGX_MACOSX_KEVENT_BUG_SHIFT   << 32

END

else
    cat << END >> $NGX_AUTO_CONFIG_H

#define NGX_MACOSX_KEVENT_BUG_SHIFT

END
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_libs=
ngx_feature_test="crypt(\"test\", \"salt\");"
. auto/feature


if [ $ngx_found = no ]; then

    ngx_feature="crypt() in libcrypt"
    ngx_feature_libs=-lcrypt
    . auto/feature

    if [ $ngx_found = yes ]; then
        CRYPT_LIB="-lcrypt"
    fi
fi