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dnl ===================================================================
dnl configure.ac
dnl Process this file with autogen.sh to produce configure files
dnl ===================================================================


AC_PREREQ([2.71])
AC_INIT([Iperf],[2.2.0])
AC_CONFIG_HEADERS([config.h])
AM_INIT_AUTOMAKE()

dnl The end user may not have autotools
AM_MAINTAINER_MODE([disable])

m4_include([m4/ax_create_stdint_h.m4])
m4_include([m4/dast.m4])
m4_include([m4/ax_pthread.m4])

AC_ARG_ENABLE(ipv6, AS_HELP_STRING([--disable-ipv6],[disable ipv6 support (default is autodetect)]),
	ac_cv_have_ipv6=$enable_ipv6)

AC_ARG_ENABLE(multicast, AS_HELP_STRING([--disable-multicast],[disable multicast support (default is autodetect)]),
	ac_cv_multicast=$enable_multicast)

AC_ARG_ENABLE(tcpstats, AS_HELP_STRING([--disable-tcpstats],[disable tcpstats support (default is autodetect)]),
	ac_cv_tcpstats=$enable_tcpstats)

AC_ARG_ENABLE(threads, AS_HELP_STRING([--disable-threads],[disable thread support (default is autodetect)]))

AC_ARG_ENABLE(debuginfo, AS_HELP_STRING([--enable-debuginfo],[enable asserts and debugging info for sockets (default is no)]),
	enable_debuginfo=$enableval,
	enable_debuginfo=no)

AC_ARG_ENABLE(web100, AS_HELP_STRING([--disable-web100],[disable web100 support (default is autodetect)]))

AC_ARG_ENABLE(kalman, AS_HELP_STRING([--disable-kalman],[disable kalman delay tuning (default is enable)]))

AC_ARG_ENABLE(multicast_all, AS_HELP_STRING([--disable-multicast-all],[enable the use of IP_MULITICAST_ALL (default is disable)]))

AC_ARG_ENABLE(write_select, AS_HELP_STRING([--disable-write-select],[disable use of select before writes (default is enable)]))

AC_ARG_ENABLE(role_reversal_id, AS_HELP_STRING([--disable-role-reversal-id],[disable role reversal special characters (default is enable)]))

AC_ARG_ENABLE(default_localonly, AS_HELP_STRING([--enable-default-localonly],[enforce limiting test traffic to local-only network (via socket SO_DONTROUTE) as the default mode]))

AC_ARG_ENABLE(seqno64b, AS_HELP_STRING([--disable-seqno64b],[disable 64 bit sequence numer support (default is enable)]))

AC_ARG_ENABLE(fastsampling, AS_HELP_STRING([--enable-fastsampling],[enable support for 100 microsecond report intervals (default is disable)]))
AM_CONDITIONAL([FASTSAMPLING], [test "x$enable_fastsampling" = "xyes"])

AC_ARG_ENABLE(discover_defaultlen, AS_HELP_STRING([--enable-discover-defaultlen],[enable support to set the default payload size after device MTU discovery  (default is disable)]))
AM_CONDITIONAL([DISCOVER_DEFAULTLEN], [test "x$enable_discover_defaultlen" = "xyes"])

AC_ARG_ENABLE(thread_debug, AS_HELP_STRING([--enable-thread-debug],[enable support for thread debugging (default is disable)]))
AM_CONDITIONAL([THREAD_DEBUG], [test "x$enable_thread_debug" = "xyes"])

AC_ARG_ENABLE(packet_debug, AS_HELP_STRING([--enable-packet-debug],[enable support for packet level debugging (default is disable)]))
AM_CONDITIONAL([PACKET_DEBUG], [test "x$enable_packet_debug" = "xyes"])

AC_ARG_ENABLE(summing_debug, AS_HELP_STRING([--enable-summing-debug],[enable support for interval summing debugging (default is disable)]))
AM_CONDITIONAL([SUMMING_DEBUG], [test "x$enable_summing_debug" = "xyes"])

AC_ARG_ENABLE(checkprograms, AS_HELP_STRING([--enable-checkprograms],[enable support for building support programs such as checkdelay, checkpdfs, etc. (default is disable)]))
AM_CONDITIONAL([CHECKPROGRAMS], [test "x$enable_checkprograms" = "xyes"])

AC_ARG_ENABLE([static-bin],
    AS_HELP_STRING([--enable-static-bin], [link iperf binary statically]),
    [enable_static_bin=yes],
    [:])
AM_CONDITIONAL([ENABLE_STATIC_BIN], [test x$enable_static_bin = xno])

AS_IF([test "x$enable_static_bin" = xyes],
 [CFLAGS="$CFLAGS --static"; CXXFLAGS="$CXXFLAGS --static"; LDFLAGS="$LDFLAGS --static"]
 [])

AC_ARG_ENABLE(debug_symbols,
AS_HELP_STRING([--enable-debug-symbols],
               [enable debugging with symbols, default: no]),
[case "${enableval}" in
             yes) debug_symbols=true ;;
             no)  debug_symbols=false ;;
             *)   AC_MSG_ERROR([bad value ${enableval} for --enable-debug-symbols]) ;;
esac],
[debug_symbols=false])

AM_CONDITIONAL(DEBUG_SYMBOLS, test x"$debug_symbols" = x"true")

dnl AF_PACKET support
AC_ARG_ENABLE(af-packet,
    AS_HELP_STRING([--enable-af-packet], [Enable AF_PACKET support [default=yes]]),,[enable_af_packet=yes])

AS_IF([test "x$enable_af_packet" = "xyes"], [
   AC_CHECK_DECL([TPACKET_V2],
      AC_DEFINE([HAVE_AF_PACKET],[1],[AF_PACKET support is available]),
      [enable_af_packet="no"],
      [[#include <sys/socket.h>
      #include <linux/if_packet.h>]])
   AM_CONDITIONAL([AF_PACKET], [test "x${enable_af_packet}" = "xyes"])
])

dnl TUNTAP_TUN support
AC_ARG_ENABLE(tuntap-tun,
    AS_HELP_STRING([--enable-tuntap-tun], [Enable TUNTAP_TUN support [default=yes]]),,[enable_tuntap_tun=yes])

AS_IF([test "x$enable_tuntap_tun" = "xyes"], [
   AC_CHECK_DECLS([IFF_TUN],
      AC_DEFINE([HAVE_TUNTAP_TUN],[1],[TUNTAP_TUN support is available]),
      [enable_tuntap_tun="no"],
      [[#include <linux/if_tun.h>]])
   AM_CONDITIONAL([TUNTAP_TUN], [test "x${enable_tuntap_tun}" = "xyes"])
])

dnl TUNTAP_TAP support
AC_ARG_ENABLE(tuntap-tap,
    AS_HELP_STRING([--enable-tuntap-tap], [Enable TUNTAP_TAP support [default=yes]]),,[enable_tuntap_tap=yes])

AS_IF([test "x$enable_tuntap_tap" = "xyes"], [
   AC_CHECK_DECLS([IFF_TAP],
      AC_DEFINE([HAVE_TUNTAP_TAP],[1],[TUNTAP_TAP support is available]),
      [enable_tuntap_tap="no"],
      [[#include <linux/if_tun.h>]])
   AM_CONDITIONAL([TUNTAP_TAP], [test "x${enable_tuntap_tap}" = "xyes"])
])

dnl ===================================================================
dnl Checks for programs
dnl ===================================================================

AC_PROG_CXX
CXXFLAGS=`echo " $CXXFLAGS " | sed -e "s/ -g / /"` # do not want it implicitly
AC_PROG_CC
CFLAGS=`echo " $CFLAGS " | sed -e "s/ -g / /"` # do not want it implicitly
AC_SEARCH_LIBS([strerror],[cposix])
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_RANLIB
AC_LANG(C)
AC_CANONICAL_HOST

dnl ===================================================================
dnl Checks for libraries.
dnl ===================================================================
AC_CHECK_LIB([rt], [clock_gettime])

dnl check for -lpthread

if test "$enable_threads" != no; then
  AX_PTHREAD()
    if test "$ax_pthread_ok" = yes; then
      AC_DEFINE([HAVE_POSIX_THREAD], 1,)
      AC_DEFINE([_REENTRANT], 1,)
    fi
fi

dnl check for -lnsl, -lsocket
AC_SEARCH_LIBS([gethostbyname], [nsl])
AC_SEARCH_LIBS([socket], [socket], [],
  [AC_CHECK_HEADER([winsock2.h],[

  AC_DEFINE([HAVE_WINSOCK2_H], 1, [Define if winsock2.h exists.])
  if test "$ax_pthread_ok" != yes; then
  AC_DEFINE([HAVE_WIN32_THREAD], 1, [Define if using WIN32 threads])
  fi
  LIBS="-lws2_32 $LIBS"],
  [],
  [#include <windows.h>])])

dnl Checks for header files.
m4_warn([obsolete],
[The preprocessor macro `STDC_HEADERS' is obsolete.
  Except in unusual embedded environments, you can safely include all
  ISO C90 headers unconditionally.])dnl
# Autoupdate added the next two lines to ensure that your configure
# script's behavior did not change.  They are probably safe to remove.
AC_CHECK_INCLUDES_DEFAULT
AC_PROG_EGREP

AC_CHECK_HEADERS([arpa/inet.h libintl.h net/ethernet.h net/if.h sys/ioctl.h sys/sockio.h linux/sockios.h linux/ip.h linux/udp.h linux/tcp.h linux/if_packet.h linux/filter.h linux/if_tun.h netdb.h netinet/in.h netinet/tcp.h stdlib.h string.h strings.h sys/socket.h sys/time.h syslog.h unistd.h signal.h ifaddrs.h])

dnl ===================================================================
dnl Checks for typedefs, structures
dnl ===================================================================

AC_C_CONST
AC_TYPE_SIZE_T
AC_CHECK_TYPES(ssize_t,,AC_DEFINE_UNQUOTED(ssize_t, int))
m4_warn([obsolete],
[Update your code to rely only on HAVE_SYS_TIME_H,
then remove this warning and the obsolete code below it.
All current systems provide time.h; it need not be checked for.
Not all systems provide sys/time.h, but those that do, all allow
you to include it and time.h simultaneously.])dnl
AC_CHECK_HEADERS_ONCE([sys/time.h])
# Obsolete code to be removed.
if test $ac_cv_header_sys_time_h = yes; then
  AC_DEFINE([TIME_WITH_SYS_TIME],[1],[Define to 1 if you can safely include both <sys/time.h>
	     and <time.h>.  This macro is obsolete.])
fi
# End of obsolete code.

AC_STRUCT_TM

AC_CHECK_TYPES(int64_t)

AC_CACHE_CHECK(3rd argument of accept, ac_cv_accept_arg, [
  dnl Try socklen_t (POSIX)
  DAST_ACCEPT_ARG(socklen_t)

  dnl Try int (original BSD)
  DAST_ACCEPT_ARG(int)

  dnl Try size_t (older standard; AIX)
  DAST_ACCEPT_ARG(size_t)

  dnl Try short (shouldn't be)
  DAST_ACCEPT_ARG(short)

  dnl Try long (shouldn't be)
  DAST_ACCEPT_ARG(long)
])

if test -z "$ac_cv_accept_arg" ; then
  ac_cv_accept_arg=int
fi

AC_DEFINE_UNQUOTED([Socklen_t], $ac_cv_accept_arg, [Define 3rd arg of accept])

dnl Checks for library functions.
AC_FUNC_MEMCMP
AC_FUNC_SELECT_ARGTYPES
m4_warn([obsolete],
[your code may safely assume C89 semantics that RETSIGTYPE is void.
Remove this warning and the `AC_CACHE_CHECK' when you adjust the code.])dnl
AC_CACHE_CHECK([return type of signal handlers],[ac_cv_type_signal],[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <sys/types.h>
#include <signal.h>
],
		 [return *(signal (0, 0)) (0) == 1;])],
		   [ac_cv_type_signal=int],
		   [ac_cv_type_signal=void])])
AC_DEFINE_UNQUOTED([RETSIGTYPE],[$ac_cv_type_signal],[Define as the return type of signal handlers
		    (`int' or `void').])

AC_FUNC_STRFTIME
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([atexit memset select strchr strerror strtol strtoll strtod usleep clock_gettime sched_setscheduler sched_yield mlockall setitimer nanosleep clock_nanosleep freopen])
AC_REPLACE_FUNCS(snprintf inet_pton inet_ntop gettimeofday)
AC_CHECK_DECLS([ENOBUFS, EWOULDBLOCK],[],[],[#include <errno.h>])
AC_CHECK_DECLS([SIOCGIFMTU],[],[],[
#ifdef HAVE_LINUX_SOCKIOS_H
#include <linux/sockios.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
])
AC_CHECK_DECLS([pthread_cancel, pthread_threadid_np],[],[],[#include <pthread.h>])
AC_CHECK_DECLS([CPU_SET],[],[],[
	#define _GNU_SOURCE
	#include <sched.h>
	])
AC_CHECK_DECLS([SIGALRM],[],[],[#include <signal.h>])


in_h='
#ifdef HAVE_WINSOCK2_H
#define _WIN32_WINNT 0x0501 /* use (at least) WinXP API */
#define WIN32_LEAN_AND_MEAN /* exclude unnecesary headers */
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#endif
'

AC_CHECK_DECLS([AF_INET6, SO_TIMESTAMP, SO_SNDTIMEO, SO_REUSEADDR, SO_REUSEPORT, SO_BINDTODEVICE, MSG_DONTWAIT, MSG_TRUNC,
			  MSG_CTRUNC, SO_MAX_PACING_RATE, SO_DONTROUTE, IPV6_TCLASS, IP_MULTICAST_ALL, IP_TOS,
			  IP_DROP_MEMBERSHIP,IPV6_LEAVE_GROUP,MCAST_LEAVE_GROUP,
			  MCAST_JOIN_GROUP, MCAST_JOIN_SOURCE_GROUP, MCAST_LEAVE_SOURCE_GROUP, IPV6_JOIN_GROUP, IPV6_V6ONLY,
			  IPV6_ADD_MEMBERSHIP, IPV6_MULTICAST_HOPS, MSG_PEEK, MSG_WAITALL, TCP_CONGESTION,
			  TCP_NODELAY, TCP_INFO, TCP_CONNECTION_INFO, TCP_WINDOW_CLAMP, TCP_TX_DELAY, TCP_QUICKACK,
			  SO_ZEROCOPY, MSG_ZEROCOPY, MSG_ERRQUEUE, IP_MULTICAST_IF, IPV6_MULTICAST_IF,
			  MCAST_BLOCK_SOURCE, MCAST_UNBLOCK_SOURCE, IP_BLOCK_SOURCE, IP_UNBLOCK_SOURCE,
			  TCP_NOTSENT_LOWAT, TCP_MAXSEG, IP_ADD_MEMBERSHIP, IP_ADD_SOURCE_MEMBERSHIP, IP_DROP_SOURCE_MEMBERSHIP],
			  [],[],[$in_h])

AC_CHECK_TYPES([struct sockaddr_storage, struct sockaddr_in6,
		       struct group_source_req, struct ip_mreq, struct ip_mreqn,
		       struct ipv6_mreq, struct ip_mreq_source],,,[$in_h])

AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_len,
			 struct ip_mreq_source.imr_multiaddr.s_addr], [], [],[$in_h])

AC_CHECK_MEMBERS([struct tcp_info.tcpi_total_retrans, struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_sacked,
			 struct tcp_info.tcpi_lost, struct tcp_info.tcpi_retrans, struct tcp_info.tcpi_snd_mss,
			 struct tcp_info.tcpi_snd_cwnd], [], [],[
#include <netinet/in.h>
#include <netinet/tcp.h>
])

AC_CHECK_MEMBERS([struct tcp_info.tcpi_delivered, struct tcp_info.tcpi_delivered_ce, struct tcp_info.tcpi_dsack_dups,
			 struct tcp_info.tcpi_data_segs_out], [], [],[
#include <linux/tcp.h>
])

dnl ===================================================================
dnl Check for compiler characteristics

AC_HEADER_STDBOOL

AC_C_BIGENDIAN

dnl ===================================================================
dnl Check for system services
AC_MSG_CHECKING([for gettid syscall])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
#include <sys/syscall.h>
]], [[syscall(SYS_gettid);]])],[ok=yes],[ok=no])
if test "$ok" = "yes"; then
	AC_DEFINE(HAVE_GETTID_SYSCALL,1,[Define if syscall(SYS_gettid) available.])
fi
AC_MSG_RESULT(${ok})

dnl check for multicast
if test "$ac_cv_multicast" != no; then
  AC_MSG_CHECKING(for multicast support)
  ac_cv_multicast=no
  if test "$ac_cv_have_decl_IP_ADD_MEMBERSHIP" = yes; then
    if test "$ac_cv_type_struct_ip_mreq" = yes; then
      ac_cv_multicast=yes
    fi
  fi
  AC_MSG_RESULT($ac_cv_multicast)
  if test "$ac_cv_multicast" = yes; then
    AC_DEFINE([HAVE_MULTICAST], 1, [Define to enable multicast support])
  fi
  AC_MSG_CHECKING(for multicast ssm support)
  ac_cv_ssm_multicast=no
  if test "$ac_cv_have_decl_MCAST_JOIN_SOURCE_GROUP" = yes || test "$ac_cv_have_decl_IP_ADD_SOURCE_MEMBERSHIP" = yes; then
    if test "$ac_cv_type_struct_group_source_req" = yes; then
      ac_cv_ssm_multicast=yes
    fi
  fi
  AC_MSG_RESULT($ac_cv_ssm_multicast)
  if test "$ac_cv_ssm_multicast" = yes; then
    AC_DEFINE([HAVE_SSM_MULTICAST], 1, [Define to enable ssm multicast support])
  fi
fi

dnl check for tcpstats
if test "$ac_cv_tcpstats" != no; then
  AC_MSG_CHECKING(for tcpstats support)
  ac_cv_tcpstats=no
  if test "$ac_cv_have_decl_TCP_INFO" = yes; then
    AC_MSG_CHECKING(for TCP_INFO_TCPI_TOTAL_RETRANS support)
     if test "$ac_cv_member_struct_tcp_info_tcpi_total_retrans" = yes; then
       ac_cv_tcpstats=yes
     fi
  fi
  if test "$ac_cv_have_decl_TCP_CONNECTION_INFO" = yes; then
    ac_cv_tcpstats=yes
  fi
  AC_MSG_RESULT($ac_cv_tcpstats)
  if test "$ac_cv_tcpstats" = yes; then
    AC_DEFINE([HAVE_TCP_STATS], 1, [Define to enable tcp stats support])
  fi
fi

dnl check for IPv6
if test "$ac_cv_have_ipv6" != no; then
  AC_MSG_CHECKING(for IPv6 headers and structures)
  ac_cv_have_ipv6=no
  if test "$ac_cv_type_struct_sockaddr_storage" = yes; then
    if test "$ac_cv_type_struct_sockaddr_in6" = yes; then
      if test "$ac_cv_have_decl_AF_INET6" = yes; then
        AC_DEFINE([HAVE_IPV6], 1, [Define to enable IPv6 support])
        ac_cv_have_ipv6=yes
      fi
    fi
  fi
  AC_MSG_RESULT($ac_cv_have_ipv6)
fi

if test "$ac_cv_have_ipv6" = yes; then
  if test "$ac_cv_multicast" = yes; then
    AC_MSG_CHECKING(for IPv6 multicast support)
    ac_cv_have_ipv6_multicast=no
    if test "$ac_cv_type_struct_ipv6_mreq" = yes; then
      if test "$ac_cv_have_decl_IPV6_ADD_MEMBERSHIP" = yes; then
        if test "$ac_cv_have_decl_IPV6_MULTICAST_HOPS" = yes; then
          AC_DEFINE([HAVE_IPV6_MULTICAST], 1, [Define to enable IPv6 multicast support])
          ac_cv_have_ipv6_multicast=yes
        fi
      fi
    fi
    AC_MSG_RESULT($ac_cv_have_ipv6_multicast)
  fi
fi


if test "$enable_packet_debug" = yes; then
   AC_DEFINE([HAVE_PACKET_DEBUG], 1, [Define if packet level debugging is desired])
fi
if test "$enable_thread_debug" = yes; then
   AC_DEFINE([HAVE_THREAD_DEBUG], 1, [Define for thread level debugging])
fi
if test "$enable_summing_debug" = yes; then
   AC_DEFINE([HAVE_SUMMING_DEBUG], 1, [Define for interval summing debugging])
fi
if test "$enable_debuginfo" = yes; then
   AC_DEFINE([DBG_MJZ], 1, [Define if debugging info is desired])
else
   AC_DEFINE([NDEBUG], [1], [Define to disable asserts])
fi

if test "$enable_web100" != no; then
if test -e "/proc/web100"; then
if test -d "/proc/web100"; then
if test -e "/proc/web100/header"; then
if test -f "/proc/web100/header"; then
if test -r "/proc/web100/header"; then
AM_PATH_WEB100()
if test "$web100_success" = yes; then
AC_DEFINE([HAVE_WEB100], 1, [Define if Web100 is desired and available])
fi fi fi fi fi fi
fi

if test "$enable_kalman" != no; then
AC_DEFINE([HAVE_KALMAN], 1, [Define if Kalman tuning is desired and available])
fi

if test "$enable_multicast_all" = no; then
AC_DEFINE([HAVE_MULTICAST_ALL_DISABLE], 1, [Define if use of IP_MULTICAST_ALL is desired and available])
fi

if test "$enable_write_select" != no; then
AC_DEFINE([HAVE_USE_WRITE_SELECT], 1, [Define if select based writes are desired])
fi

if test "$enable_role_reversal_id" != no; then
AC_DEFINE([HAVE_ROLE_REVERSAL_ID], 1, [Define if role reversal ids are desired ])
fi

if test "$enable_default_localonly" = yes; then
AC_DEFINE([HAVE_DEFAULT_DONTROUTE_ON], 1, [Define if limiting test traffic to the local-only network (via socket SO_DONTROUTE) should be the default])
fi

if test "$enable_seqno64b" != no; then
AC_DEFINE([HAVE_SEQNO64b], 1, [Define if 64 bit sequence numbers are desired and available])
fi

if test "$enable_isochronous" != no; then
AC_DEFINE([HAVE_ISOCHRONOUS], 1, [Define if isochronous traffic option is desired and available])
fi

if test "$enable_fastsampling" = yes; then
AC_DEFINE([HAVE_FASTSAMPLING], 1, [Define if fast sampling for report intervals is desired])
fi
if test "$enable_discover_defaultlen" = yes; then
AC_DEFINE([DEFAULT_PAYLOAD_LEN_PER_MTU_DISCOVERY], 1, [Define if default UDP payload length is based on device MTU and socket buffer size])
fi

case "$ac_cv_host" in
*-mingw32)
    dnl Static link on MINGW for standalone DOS executable
    LIBS="$LIBS -static-libstdc++ -static";;
*-android)
    dnl Android requires PIE
    CFLAGS="$CFLAGS -fPIE"; LDFLAGS="$LDFLAGS -pie";;
esac


dnl GNU make allows us to use the $(strip ...) builtin which eliminates a
dnl large amount of extra whitespace in compile lines.
AC_MSG_CHECKING(whether make is GNU make)
STRIP_BEGIN=
STRIP_END=
if $ac_make --version 2> /dev/null | grep '^GNU Make ' > /dev/null ; then
    STRIP_BEGIN='$(strip $(STRIP_DUMMY)'
    STRIP_END=')'
    AC_MSG_RESULT(yes)
else
    AC_MSG_RESULT(no)
fi

dnl some Make 3.79 $(strip ) versions are broken and require an empty arg
STRIP_DUMMY=
AC_SUBST(STRIP_DUMMY)
AC_SUBST(STRIP_BEGIN)
AC_SUBST(STRIP_END)

AC_CONFIG_FILES([Makefile
		compat/Makefile
		doc/Makefile
		flows/Makefile
		include/Makefile
		src/Makefile
                man/Makefile])
AC_OUTPUT