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dnl ======================================================================
dnl su module
dnl ======================================================================

dnl This is in a separate file because otherwise AM_CONFIG_HEADER in
dnl SAC_SOFIA_SU confuses autoheader. If SAC_SOFIA_SU is included to a
dnl aclocal.m4 of another package, autoheader returns a spurious error and
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dnl automake complains about missing
dnl libsofia-sip-ua/su/sofia-sip/su_configure.h.
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AC_DEFUN([SAC_SOFIA_SU], [
# Beginning of SAC_SOFIA_SU

AC_REQUIRE([SAC_WITH_RT])

# ======================================================================
# Check for features used by su

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dnl Define compilation options for su_configure.h
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SAC_SU_DEFINE([SU_HAVE_BSDSOCK], 1, [Define as 1 if you have BSD socket interface])

case "$target" in 
*-*-solaris?.* )
  SAC_SU_DEFINE(__EXTENSIONS__, 1, [Define this in Solaris in order to get POSIX extensions.])
;;
esac

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case "$target" in 
i?86-*-* )
  SAC_SU_DEFINE(SU_HAVE_TAGSTACK, 1, [Define this as 1 if we can use tags directly from stack.])
;;
esac

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if false; then # Define Win32 macros
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  AC_DEFINE([HAVE_WIN32], 1, [Define as 1 you have WIN32])
  SAC_SU_DEFINE([SU_HAVE_WINSOCK], 1, [Define as 1 you have WinSock])
  SAC_SU_DEFINE([SU_HAVE_WINSOCK2], 1, [Define as 1 you have WinSock2])
  AC_DEFINE([HAVE_FILETIME], 1, [
     Define this as 1 if you have WIN32 FILETIME type and 
     GetSystemTimeAsFileTime().])
fi

# Check includes used by su includes
AC_CHECK_HEADER(sys/types.h, 
	SAC_SU_DEFINE([SU_HAVE_SYS_TYPES], 1, 
		     [Define as 1 if Sofia uses sys/types.h]))

ax_inttypes=false
AC_CHECK_HEADER(stdint.h, [
	ax_inttypes=true
	SAC_SU_DEFINE([SU_HAVE_STDINT], 1, 
		     [Define as 1 if Sofia uses stdint.h])])
AC_CHECK_HEADER(inttypes.h,[
	ax_inttypes=true
	SAC_SU_DEFINE([SU_HAVE_INTTYPES], 1, 
		     [Define as 1 if Sofia uses inttypes.h])])

if $ax_inttypes; then : ; else 
	AC_MSG_ERROR("No <stdint.h> or <inttypes.h> found.")
fi

AC_CHECK_HEADER(pthread.h, 
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        HAVE_PTHREADS=1;
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	SAC_SU_DEFINE([SU_HAVE_PTHREADS], 1, [Sofia SU uses pthreads]))

dnl ===========================================================================
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dnl Checks for typedefs, headers, structures, and compiler characteristics.
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dnl ===========================================================================

AC_REQUIRE([AC_C_CONST])
AC_REQUIRE([AC_HEADER_TIME])
AC_REQUIRE([AC_TYPE_SIZE_T])
AC_REQUIRE([AC_C_VAR_FUNC])
AC_REQUIRE([AC_C_MACRO_FUNCTION])

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AC_REQUIRE([AC_C_INLINE])
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case "$ac_cv_c_inline" in
  yes) SAC_SU_DEFINE(su_inline, static inline, [
		Define this as declarator for static inline functions.
	])dnl
       SAC_SU_DEFINE(SU_INLINE, inline, [
		Define this as declarator for inline functions.
	])dnl
       SAC_SU_DEFINE(SU_HAVE_INLINE, 1, [
		Define this as 1 if you have inline functions.
	])dnl
  ;;
  no)  SAC_SU_DEFINE(su_inline, static)dnl
       SAC_SU_DEFINE(SU_INLINE)dnl
       SAC_SU_DEFINE(SU_HAVE_INLINE)dnl
  ;;
  *)   SAC_SU_DEFINE_UNQUOTED(su_inline, static $ac_cv_c_inline)dnl
       SAC_SU_DEFINE_UNQUOTED(SU_INLINE, $ac_cv_c_inline)dnl
       SAC_SU_DEFINE(SU_HAVE_INLINE, 1)dnl
  ;;
esac

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AC_REQUIRE([AC_SYS_SA_LEN])
if test "$ac_cv_sa_len" = yes ;then
  SAC_SU_DEFINE([SU_HAVE_SOCKADDR_SA_LEN], 1, 
	        [Define this as 1 if you have sa_len in struct sockaddr])
fi

AC_REQUIRE([AC_STRUCT_SIN6])
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case $ac_cv_sin6 in 
yes) SAC_SU_DEFINE(SU_HAVE_IN6, 1, [
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	Define this as 1 if you have struct sockaddr_in6]) ;;
 no) ;;
  *) AC_MSG_ERROR([Inconsistent struct sockaddr_sin6 test]) ;;
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esac

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AC_CHECK_HEADERS([unistd.h sys/time.h])
AC_CHECK_HEADERS([sys/socket.h sys/ioctl.h sys/filio.h sys/sockio.h])
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AC_CHECK_HEADERS([netinet/in.h arpa/inet.h netdb.h \
                  net/if.h net/if_types.h ifaddr.h],,,
		[sys/types.h sys/socket.h])
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AC_CACHE_CHECK([for struct addrinfo],
[ac_cv_struct_addrinfo],[
ac_cv_struct_addrinfo=no
if test "$ac_cv_header_sys_socket_h" = yes; then
  AC_EGREP_HEADER([struct.+addrinfo], [netdb.h], [
  ac_cv_struct_addrinfo=yes])
else
  ac_cv_struct_addrinfo='sys/socket.h missing'
fi])

if test "$ac_cv_struct_addrinfo" = yes; then
  SAC_SU_DEFINE(SU_HAVE_ADDRINFO, 1, 
    [Define as 1 if you have struct addrinfo.])
fi

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AC_CACHE_CHECK([for struct sockaddr_storage],
[ac_cv_struct_sockaddr_storage],[
ac_cv_struct_sockaddr_storage=no
if test "$ac_cv_header_sys_socket_h" = yes; then
  AC_EGREP_HEADER([struct.+sockaddr_storage], [sys/socket.h], [
  ac_cv_struct_sockaddr_storage=yes])
else
  ac_cv_struct_sockaddr_storage='sys/socket.h missing'
fi])
if test "$ac_cv_struct_sockaddr_storage" = yes; then
  SAC_SU_DEFINE(SU_HAVE_SOCKADDR_STORAGE, 1, 
    [Define this as 1 if you have struct sockaddr_storage])
fi

AC_CACHE_CHECK([for field ifr_index in struct ifreq],
[ac_cv_struct_ifreq_ifr_index],[
ac_cv_struct_ifreq_ifr_index=no
if test "1${ac_cv_header_arpa_inet_h}2${ac_cv_header_netdb_h}3${ac_cv_header_sys_socket_h}4${ac_cv_header_net_if_h}" = 1yes2yes3yes4yes; then
AC_TRY_COMPILE([#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
#include <net/if.h>], [
struct ifreq ifreq; int index; index = ifreq.ifr_index;
], [ac_cv_struct_ifreq_ifr_index=yes])
else
  ac_cv_struct_ifreq_ifr_index='net/if.h missing'
fi # arpa/inet.h && netdb.h && sys/socket.h && net/if.h
])
if test "$ac_cv_struct_ifreq_ifr_index" = yes ; then
  :
  AC_DEFINE(HAVE_IFR_INDEX, 1, [Define this as 1 if you have ifr_index in <net/if.h>])
else
AC_CACHE_CHECK([for field ifr_ifindex in struct ifreq],
[ac_cv_struct_ifreq_ifr_ifindex],[
ac_cv_struct_ifreq_ifr_ifindex=no
if test "1${ac_cv_header_arpa_inet_h}2${ac_cv_header_netdb_h}3${ac_cv_header_sys_socket_h}4${ac_cv_header_net_if_h}" = 1yes2yes3yes4yes; then
AC_TRY_COMPILE([#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
#include <net/if.h>], [
struct ifreq ifreq; int index; index = ifreq.ifr_ifindex;
], ac_cv_struct_ifreq_ifr_ifindex=yes)
else
  ac_cv_struct_ifreq_ifr_ifindex='net/if.h missing'
fi # arpa/inet.h && netdb.h && sys/socket.h && net/if.h
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])
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if test "$ac_cv_struct_ifreq_ifr_ifindex" = yes; then
  :
  AC_DEFINE(HAVE_IFR_IFINDEX, 1, [Define this as 1 if you have ifr_ifindex in <net/if.h>])
fi

fi # ifr_index in struct ifreq
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dnl SIOGCIFCONF & struct ifconf
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AC_CACHE_CHECK([for struct ifconf],
[ac_cv_struct_ifconf],[
ac_cv_struct_ifconf=no
if test "$ac_cv_header_net_if_h" = yes; then
  AC_EGREP_HEADER(struct.+ifconf, net/if.h, ac_cv_struct_ifconf=yes)
else
  ac_cv_struct_ifconf='net/if.h missing'
fi])
if test "$ac_cv_struct_ifconf" = yes; then
  AC_DEFINE(HAVE_IFCONF, 1, [Define this as 1 if you have SIOCGIFCONF])
fi
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AC_CACHE_CHECK([for ioctl SIOCGIFNUM],
[ac_cv_ioctl_siocgifnum],[
ac_cv_ioctl_siocgifnum=no
if test "$ac_cv_header_sys_sockio_h" = yes; then
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AC_EGREP_CPP(yes, [
#include <sys/sockio.h>
#ifdef SIOCGIFNUM
  yes
#endif
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], [ac_cv_ioctl_siocgifnum=yes])
else
  ac_cv_ioctl_siocgifnum='sys/sockio.h missing'
fi])
if test "$ac_cv_ioctl_siocgifnum" = yes; then
  HAVE_IFNUM=1
  AC_DEFINE(HAVE_IFNUM, 1, [Define this as 1 if you have SIOCGIFNUM ioctl])
else
  HAVE_IFNUM=0
fi

if false; then
  # Define Win32 macros
  AC_DEFINE([HAVE_IPHLPAPI_H], 1, [Define as 1 you have WIN32 <iphlpapi.h>])

  AC_DEFINE([HAVE_INTERFACE_INFO_EX], 1, [
     Define this as 1 if you have WIN32 INTERFACE_INFO_EX type.])

  AC_DEFINE([HAVE_SIO_ADDRESS_LIST_QUERY], 1, [
     Define this as 1 if you have WIN32 WSAIoctl SIO_ADDRESS_LIST_QUERY.])
fi
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# ===========================================================================
# Checks for libraries
# ===========================================================================

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SAC_CHECK_SU_LIBS

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AC_ARG_WITH(glib,
[  --with-glib=version     use GLib (default=2.0)], [
case "$with_glib" in 
yes | "" ) with_glib=2.0 ;;
esac
], [with_glib=2.0])

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if test X$with_glib != Xno ; then 

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PKG_CHECK_MODULES(GLIB, glib-$with_glib, [dnl
SAC_SU_DEFINE([SU_HAVE_GLIB], 1, [Define as 1 if you have >= glib-2.0])
HAVE_GLIB=yes
])

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fi

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AM_CONDITIONAL([HAVE_GLIB], [test "x$HAVE_GLIB" != x])
AC_SUBST(GLIB_LIBS)
AC_SUBST(GLIB_CFLAGS)
AC_SUBST(GLIB_VERSION)

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# ===========================================================================
# Checks for library functions.
# ===========================================================================

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AC_CHECK_FUNCS([gettimeofday strerror random initstate tcsetattr flock alarm])
AC_CHECK_FUNCS([socketpair gethostname getipnodebyname poll epoll])
AC_CHECK_FUNCS([getaddrinfo getnameinfo freeaddrinfo gai_strerror getifaddrs])
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# _GNU_SOURCE stuff
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AC_CHECK_FUNCS([getline getdelim getpass])
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AC_REQUIRE([SAC_WITH_RT])

if test "${with_rt}" != no; then
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    AC_CHECK_FUNCS([clock_gettime clock_getcpuclockid])
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fi

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SAC_REPLACE_FUNCS(memmem memccpy memspn memcspn strcasestr strtoull)
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AC_CHECK_FUNC([poll], 
	SAC_SU_DEFINE([SU_HAVE_POLL], 1, [
	Define this as 1 if you have poll() function.
	]))

AC_CHECK_FUNC([if_nameindex], 
	SAC_SU_DEFINE([SU_HAVE_IF_NAMEINDEX], 1, [
	Define this as 1 if you have if_nameindex() function.
	]))

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# ===========================================================================
# Check pthread_rwlock_unlock()
# ===========================================================================

AC_DEFUN([AC_DEFINE_HAVE_PTHREAD_RWLOCK],[dnl
AC_DEFINE([HAVE_PTHREAD_RWLOCK], 1,[
Define this as 1 if you have working pthread_rwlock_t implementation.

   A  thread  may hold multiple concurrent read locks on rwlock - that is,
   successfully call the pthread_rwlock_rdlock() function  n  times.  If
   so,  the  application  shall  ensure that the thread performs matching
   unlocks - that is, it  calls  the  pthread_rwlock_unlock()  function  n
   times.
])])

if test x$HAVE_PTHREADS = x1 ; then

AC_RUN_IFELSE([
#define _XOPEN_SOURCE (500)

#include <pthread.h>

pthread_rwlock_t rw;

int main()
{
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  pthread_rwlock_init(&rw, NULL);
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  pthread_rwlock_rdlock(&rw);
  pthread_rwlock_rdlock(&rw);
  pthread_rwlock_unlock(&rw);
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  /* pthread_rwlock_trywrlock() should fail (not return 0) */
  return pthread_rwlock_trywrlock(&rw) != 0 ? 0  : 1;
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}
],[AC_DEFINE_HAVE_PTHREAD_RWLOCK],[
AC_MSG_WARN([Recursive pthread_rwlock_rdlock() does not work!!! ])
],[AC_DEFINE_HAVE_PTHREAD_RWLOCK])

fi

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# ===========================================================================
# Check IPv6 addresss configuration
# ===========================================================================
case "$target" in
 *-*-linux*) AC_DEFINE([HAVE_PROC_NET_IF_INET6], 1, 
	[Define this as 1 if you have /proc/net/if_inet6 control file]) ;;
esac

# ===========================================================================
# Check for partial su distibutions
# ===========================================================================

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if test -r ${srcdir}/libsofia-sip-ua/su/sofia-sip/su_wait.h ; then
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  AC_DEFINE(HAVE_SU_WAIT_H, 1, 
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            [Define to 1 if you have the <sofia-sip/su_wait.h> header file.])
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fi

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AM_CONFIG_HEADER([libsofia-sip-ua/su/sofia-sip/su_configure.h])
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])

# SAC_SU_DEFINE(VARIABLE, [VALUE], [DESCRIPTION])
# -------------------------------------------
# Set VARIABLE to VALUE, verbatim, or 1.  Remember the value
# and if VARIABLE is affected the same VALUE, do nothing, else
# die.  The third argument is used by autoheader.
m4_define([SAC_SU_DEFINE],[
cat >>confdefs.h <<\_AXEOF
[@%:@define] $1 m4_if($#, 2, [$2], $#, 3, [$2], 1)
_AXEOF
])

# SAC_SU_DEFINE_UNQUOTED(VARIABLE, [VALUE], [DESCRIPTION])
# ----------------------------------------------------
# Similar, but perform shell substitutions $ ` \ once on VALUE.
m4_define([SAC_SU_DEFINE_UNQUOTED],[
cat >>confdefs.h <<_ACEOF
[@%:@define] $1 m4_if($#, 2, [$2], $#, 3, [$2], 1)
_ACEOF
])
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AC_DEFUN([SAC_REPLACE_FUNCS],[dnl
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AC_CHECK_FUNCS($1,ifelse([$2], , :, [$2]),[dnl
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case "$REPLACE_LIBADD" in
    "$ac_func.lo"   | \
  *" $ac_func.lo"   | \
    "$ac_func.lo "* | \
  *" $ac_func.lo "* ) ;;
  *) REPLACE_LIBADD="$REPLACE_LIBADD $ac_func.lo" ;;
esac])
AC_SUBST([REPLACE_LIBADD])
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ifelse([$3], , :, [$3])
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])