AC_INIT(pjproject,0.8)

host_orig="$host"

AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
AC_CONFIG_HEADER([pjlib/include/pj/compat/os_auto.h
		  pjlib/include/pj/compat/m_auto.h
		  pjmedia/include/pjmedia/config_auto.h
		  pjmedia/include/pjmedia-codec/config_auto.h
		  pjsip/include/pjsip/sip_autoconf.h
		 ])
AC_CONFIG_FILES([build.mak 
		 build/os-auto.mak 
	         pjlib/build/os-auto.mak 
	         pjlib-util/build/os-auto.mak 
		 pjmedia/build/os-auto.mak
		 pjsip/build/os-auto.mak
		 third_party/build/portaudio/os-auto.mak 
		 third_party/build/os-auto.mak
	        ])


dnl
dnl Setup default CFLAGS
dnl
if test "$CFLAGS" = ""; then
  CFLAGS="-O2"
else
  CFLAGS="$CFLAGS"
fi

CXXFLAGS="$CFLAGS $CXXFLAGS"

AC_PROG_CC
AC_PROG_CXX
AC_LANG_C

AC_SUBST(ac_pjdir)
case $target in 
    *mingw* | *cygw* | *win32* | *w32* )
	ac_pjdir=`pwd -W`
	;;
    *)
	ac_pjdir=`pwd`
	;;
esac

AC_CHECK_LIB(pthread,pthread_create)
AC_CHECK_LIB(wsock32,puts)
AC_CHECK_LIB(ws2_32,puts)
AC_CHECK_LIB(ole32,puts)
AC_CHECK_LIB(winmm,puts)
AC_CHECK_LIB(socket,puts)
AC_CHECK_LIB(rt,puts)
AC_CHECK_LIB(nsl,puts)
AC_CHECK_LIB(uuid,uuid_generate)
AC_CHECK_LIB(uuid,uuid_generate,[ac_has_uuid_lib=1])

AC_MSG_RESULT([Setting PJ_M_NAME to $target_cpu])
AC_DEFINE_UNQUOTED(PJ_M_NAME,["$target_cpu"])

dnl
dnl Memory alignment detection
dnl
AC_MSG_CHECKING([memory alignment])
case $target in
    ia64-* | x86_64-* )
	AC_DEFINE(PJ_POOL_ALIGNMENT, 8)
	AC_MSG_RESULT([8 bytes])
	;;
    * )
	AC_DEFINE(PJ_POOL_ALIGNMENT, 4)
	AC_MSG_RESULT([4 bytes (default)])
	;;
esac


dnl
dnl Endianness detection
dnl
AC_C_BIGENDIAN

dnl
dnl Legacy macros
dnl
case $target in
    *mingw* | *cygw* | *win32* | *w32* )
	AC_DEFINE(PJ_WIN32,1)
	AC_DEFINE(PJ_WIN32_WINNT,0x0400)
	AC_DEFINE(WIN32_LEAN_AND_MEAN)
	;;
    *darwin*)
	AC_DEFINE(PJ_DARWINOS,1)
	;;
    *linux*)
	AC_DEFINE(PJ_LINUX,1)
	;;
    *rtems*)
	AC_DEFINE(PJ_RTEMS,1)
	;;
    *sunos* | *solaris* )
	AC_DEFINE(PJ_SUNOS,1)
	;;
    *)
	;;
esac


dnl # --disable-floating-point option
AC_ARG_ENABLE(floating-point,
	      AC_HELP_STRING([--disable-floating-point],
			     [Disable floating point where possible]),
	      [if test "$enable_floating_point" = "no"; then
		AC_DEFINE(PJ_HAS_FLOATING_POINT,0)
		AC_MSG_RESULT([Checking if floating point is disabled... yes])
	       fi],
	      [
		AC_DEFINE(PJ_HAS_FLOATING_POINT,1)
	        AC_MSG_RESULT([Checking if floating point is disabled... no]) 
		AC_CHECK_LIB(m,fmod)
	      ])


AC_CHECK_HEADER(arpa/inet.h,[AC_DEFINE(PJ_HAS_ARPA_INET_H,1)])
AC_CHECK_HEADER(assert.h,[AC_DEFINE(PJ_HAS_ASSERT_H,1)])
AC_CHECK_HEADER(ctype.h,[AC_DEFINE(PJ_HAS_CTYPE_H,1)])

case $target in
    *mingw* | *cygw* | *win32* | *w32* )
	AC_DEFINE(PJ_HAS_ERRNO_H,0)
	;;
    *)
	AC_CHECK_HEADER(errno.h,[AC_DEFINE(PJ_HAS_ERRNO_H,1)])
	;;
esac

AC_CHECK_HEADER(fcntl.h,[AC_DEFINE(PJ_HAS_FCNTL_H,1)])
AC_CHECK_HEADER(linux/socket.h,[AC_DEFINE(PJ_HAS_LINUX_SOCKET_H,1)])
AC_CHECK_HEADER(malloc.h,[AC_DEFINE(PJ_HAS_MALLOC_H,1)])
AC_CHECK_HEADER(netdb.h,[AC_DEFINE(PJ_HAS_NETDB_H,1)])
AC_CHECK_HEADER(netinet/in.h,[AC_DEFINE(PJ_HAS_NETINET_IN_H,1)])
AC_CHECK_HEADER(netinet/ip.h,[AC_DEFINE(PJ_HAS_NETINET_IP_H,1)])
AC_CHECK_HEADER(net/if.h,[AC_DEFINE(PJ_HAS_NET_IF_H,1)])
AC_CHECK_HEADER(ifaddrs.h,[AC_DEFINE(PJ_HAS_IFADDRS_H,1)])
AC_CHECK_HEADER(semaphore.h,[AC_DEFINE(PJ_HAS_SEMAPHORE_H,1)])
AC_CHECK_HEADER(setjmp.h,[AC_DEFINE(PJ_HAS_SETJMP_H,1)])
AC_CHECK_HEADER(stdarg.h,[AC_DEFINE(PJ_HAS_STDARG_H,1)])
AC_CHECK_HEADER(stddef.h,[AC_DEFINE(PJ_HAS_STDDEF_H,1)])
AC_CHECK_HEADER(stdio.h,[AC_DEFINE(PJ_HAS_STDIO_H,1)])
AC_CHECK_HEADER(stdint.h,[AC_DEFINE(PJ_HAS_STDINT_H,1)])
AC_CHECK_HEADER(stdlib.h,[AC_DEFINE(PJ_HAS_STDLIB_H,1)])
AC_CHECK_HEADER(string.h,[AC_DEFINE(PJ_HAS_STRING_H,1)])
AC_CHECK_HEADER(sys/ioctl.h,[AC_DEFINE(PJ_HAS_SYS_IOCTL_H,1)])
AC_CHECK_HEADER(sys/select.h,[AC_DEFINE(PJ_HAS_SYS_SELECT_H,1)])
AC_CHECK_HEADER(sys/socket.h,[AC_DEFINE(PJ_HAS_SYS_SOCKET_H,1)])
AC_CHECK_HEADER(sys/time.h,[AC_DEFINE(PJ_HAS_SYS_TIME_H,1)])
AC_CHECK_HEADER(sys/timeb.h,[AC_DEFINE(PJ_HAS_SYS_TIMEB_H,1)])
AC_CHECK_HEADER(sys/types.h,[AC_DEFINE(PJ_HAS_SYS_TYPES_H,1)])
AC_CHECK_HEADER(time.h,[AC_DEFINE(PJ_HAS_TIME_H,1)])
AC_CHECK_HEADER(unistd.h,[AC_DEFINE(PJ_HAS_UNISTD_H,1)])
AC_CHECK_HEADER(mswsock.h,[AC_DEFINE(PJ_HAS_MSWSOCK_H,1)])
AC_CHECK_HEADER(winsock.h,[AC_DEFINE(PJ_HAS_WINSOCK_H,1)])
AC_CHECK_HEADER(winsock2.h,[AC_DEFINE(PJ_HAS_WINSOCK2_H,1)])
AC_CHECK_HEADER(uuid/uuid.h,[ac_has_uuid_h=1])

AC_MSG_RESULT([Setting PJ_OS_NAME to $target])
AC_DEFINE_UNQUOTED(PJ_OS_NAME,["$target"])

AC_MSG_RESULT([Setting PJ_HAS_ERRNO_VAR to 1])
AC_DEFINE(PJ_HAS_ERRNO_VAR,1)

AC_MSG_RESULT([Setting PJ_HAS_HIGH_RES_TIMER to 1])
AC_DEFINE(PJ_HAS_HIGH_RES_TIMER,1)

AC_MSG_RESULT([Setting PJ_HAS_MALLOC to 1])
AC_DEFINE(PJ_HAS_MALLOC,1)

AC_MSG_RESULT([Setting PJ_NATIVE_STRING_IS_UNICODE to 0])
AC_DEFINE(PJ_NATIVE_STRING_IS_UNICODE,0)

AC_MSG_RESULT([Setting PJ_ATOMIC_VALUE_TYPE to long])
AC_DEFINE(PJ_ATOMIC_VALUE_TYPE,long)

dnl # Determine if inet_aton() is available
AC_MSG_CHECKING([if inet_aton() is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
				     #include <sys/socket.h>
				     #include <arpa/inet.h>]],
		    		  [inet_aton(0, 0);])],
		  [AC_DEFINE(PJ_SOCK_HAS_INET_ATON,1)
		   AC_MSG_RESULT(yes)],
		  [AC_MSG_RESULT(no)])

dnl # Determine if inet_pton() is available
AC_MSG_CHECKING([if inet_pton() is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
				     #include <sys/socket.h>
				     #include <arpa/inet.h>]],
		    		  [inet_pton(0, 0, 0);])],
		  [AC_DEFINE(PJ_SOCK_HAS_INET_PTON,1)
		   AC_MSG_RESULT(yes)],
		  [AC_MSG_RESULT(no)])

dnl # Determine if inet_ntop() is available
AC_MSG_CHECKING([if inet_ntop() is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
				     #include <sys/socket.h>
				     #include <arpa/inet.h>]],
		    		  [inet_ntop(0, 0, 0, 0);])],
		  [AC_DEFINE(PJ_SOCK_HAS_INET_NTOP,1)
		   AC_MSG_RESULT(yes)],
		  [AC_MSG_RESULT(no)])

dnl # Determine if getaddrinfo() is available
AC_MSG_CHECKING([if getaddrinfo() is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
				     #include <sys/socket.h>
				     #include <netdb.h>]],
		    		  [getaddrinfo(0, 0, 0, 0);])],
		  [AC_DEFINE(PJ_SOCK_HAS_GETADDRINFO,1)
		   AC_MSG_RESULT(yes)],
		  [AC_MSG_RESULT(no)])

dnl # Determine if sockaddr_in has sin_len member
AC_MSG_CHECKING([if sockaddr_in has sin_len member])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
				     #include <sys/socket.h>
		    		     #include <netinet/in.h>
		    		     #include <arpa/inet.h>]],
		    		  [struct sockaddr_in a; a.sin_len=0;])],
		  [AC_DEFINE(PJ_SOCKADDR_HAS_LEN,1)
		   AC_MSG_RESULT(yes)],
		  AC_MSG_RESULT(no))

dnl # Determine if socklen_t is available
AC_MSG_CHECKING([if socklen_t is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
		    		   [socklen_t xxx = 0;])],
		  [AC_DEFINE(PJ_HAS_SOCKLEN_T,1)
		   AC_MSG_RESULT(yes)],
		  AC_MSG_RESULT(no))

dnl # Determine if SO_ERROR is available
AC_MSG_CHECKING([if SO_ERROR is available])
case $target in
    *mingw* | *cygw* | *win32* | *w32* )
	AC_DEFINE(PJ_HAS_SO_ERROR,1)
	AC_MSG_RESULT(yes)
	;;
    *)
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
					     #include <sys/socket.h>
					     #include <netinet/in.h>
					     #include <arpa/inet.h>]],
					  [int i=SO_ERROR;])],
			  [AC_DEFINE(PJ_HAS_SO_ERROR,1)
			   AC_MSG_RESULT(yes)],
			  AC_MSG_RESULT(no))
	;;
esac


dnl # Determine if RW-mutex is available
AC_MSG_CHECKING([if pthread_rwlock_t is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
		    		   [pthread_rwlock_t *x;])],
		  [AC_DEFINE(PJ_EMULATE_RWMUTEX,0)
		   ac_rwmutex="yes"
  		   AC_MSG_RESULT(yes)],
		  [AC_DEFINE(PJ_EMULATE_RWMUTEX,1)
		   ac_rwmutex="no"
		   AC_MSG_RESULT(no)])

dnl # If rwmutex is not detected, check again but this time
dnl # with _POSIX_READER_WRITER_LOCKS defined (newlib needs this)
if test "$ac_rwmutex" = "no"; then
    AC_MSG_CHECKING([if pthread_rwlock_t is available with _POSIX_READER_WRITER_LOCKS])
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#define _POSIX_READER_WRITER_LOCKS
					 #include <pthread.h>]],
				       [pthread_rwlock_t *x;])],
		      [AC_DEFINE(PJ_EMULATE_RWMUTEX,0)
		       CFLAGS="$CFLAGS -D_POSIX_THREADS -D_POSIX_READER_WRITER_LOCKS"
		       AC_MSG_RESULT(yes)],
		      [AC_DEFINE(PJ_EMULATE_RWMUTEX,1)
		       AC_MSG_RESULT(no)])
fi

dnl # Do we have pthread_mutexattr_settype()?
AC_MSG_CHECKING([if pthread_mutexattr_settype() is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
		    		   [pthread_mutexattr_settype(0,PTHREAD_MUTEX_FAST_NP);])],
		  [AC_DEFINE(PJ_HAS_PTHREAD_MUTEXATTR_SETTYPE,1)
  		   AC_MSG_RESULT(yes)],
		  [AC_MSG_RESULT(no)])

dnl # Does pthread_mutexattr_t has "recursive" member?
AC_MSG_CHECKING([if pthread_mutexattr_t has recursive member])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
		    		   [[pthread_mutexattr_t attr;
				     attr.recursive=1;]])],
		  [AC_DEFINE(PJ_PTHREAD_MUTEXATTR_T_HAS_RECURSIVE,1)
  		   AC_MSG_RESULT(yes)],
		  [AC_MSG_RESULT(no)])

AC_SUBST(ac_os_objs)
case $target in
  *mingw* | *cygw* | *win32* | *w32* )
	ac_os_objs="file_access_win32.o file_io_win32.o os_core_win32.o os_error_win32.o os_time_win32.o os_timestamp_win32.o guid_win32.o ioqueue_select.o"
	;;
  *)
	ac_os_objs="file_access_unistd.o file_io_ansi.o os_core_unix.o os_error_unix.o os_time_unix.o os_timestamp_posix.o ioqueue_select.o"
	# UUID
	if test "$ac_has_uuid_lib" = "1" -a "$ac_has_uuid_h" = "1"; then
		ac_os_objs="$ac_os_objs guid_uuid.o"
	else
		ac_os_objs="$ac_os_objs guid_simple.o"
	fi
	;;
esac


dnl ##########################################
dnl #
dnl # PJMEDIA
dnl #

dnl # Sound device backend selection
AC_SUBST(ac_pjmedia_snd)
AC_ARG_ENABLE(sound,
	      AC_HELP_STRING([--disable-sound],
			     [Exclude sound (i.e. use null sound)]),
	      [if test "$enable_sound" = "no"; then
		[ac_pjmedia_snd=null]
		AC_MSG_RESULT([Checking if sound is disabled... yes])
	       fi]
	      )

AC_SUBST(ac_pa_cflags)
AC_CHECK_HEADER(sys/soundcard.h,
	 	[ac_pa_cflags="$ac_pa_cflags -DHAVE_SYS_SOUNDCARD_H"])
AC_CHECK_HEADER(linux/soundcard.h,
	 	[ac_pa_cflags="$ac_pa_cflags -DHAVE_LINUX_SOUNDCARD_H"])
AC_CHECK_HEADER(machine/soundcard.h,
	 	[ac_pa_cflags="$ac_pa_cflags -DHAVE_MACHINE_SOUNDCARD_H"])

if test "x$ac_cv_c_bigendian" = "xyes"; then
  ac_pa_cflags="$ac_pa_cflags -DPA_BIG_ENDIAN"
else
  ac_pa_cflags="$ac_pa_cflags -DPA_LITTLE_ENDIAN"
fi

if test "$enable_sound" = "no"; then
  true;
else
 case $target in
  *darwin*)
	LIBS="$LIBS -framework CoreAudio -framework CoreServices -framework AudioUnit -framework AudioToolbox"
	if test "`uname -r`" = "6.8"; then
		#ac_pa_cflags="$ac_pa_cflags -DPA_OLD_CORE_AUDIO -DMOSX_USE_NON_ATOMIC_FLAG_BITS"
		#AC_MSG_RESULT([Setting additional PortAudio CFLAGS.. -DPA_OLD_CORE_AUDIO -DMOSX_USE_NON_ATOMIC_FLAG_BITS])
		ac_pjmedia_snd=pa_old_darwinos
		AC_MSG_RESULT([Checking sound device backend... old coreaudio])
	else
		ac_pjmedia_snd=pa_darwinos
		AC_MSG_RESULT([Checking sound device backend... coreaudio])
	fi
	;;
  *cygwin* | *mingw*)
	ac_pjmedia_snd=pa_win32
	AC_MSG_RESULT([Checking sound device backend... win32 sound])
	;;
  *rtems*)
	ac_pjmedia_snd=null
	AC_MSG_RESULT([Checking sound device backend... null sound])
	;;
  *)
	ac_pjmedia_snd=pa_unix
	AC_CHECK_HEADER(alsa/version.h,
			[AC_SUBST(ac_pa_use_alsa,1)
			 LIBS="$LIBS -lasound"
			],
		        [AC_SUBST(ac_pa_use_alsa,0)])
	AC_MSG_RESULT([Checking sound device backend... unix])
	;;
 esac
fi

dnl # Include resampling small filter
AC_SUBST(ac_no_small_filter)
AC_ARG_ENABLE(small-filter,
	      AC_HELP_STRING([--disable-small-filter],
			     [Exclude small filter in resampling]),
	      [if test "$enable_small_filter" = "no"; then
		[ac_no_small_filter='-DPJMEDIA_HAS_SMALL_FILTER=0']
		AC_MSG_RESULT([Checking if small filter is disabled... yes])
	       fi],
	      AC_MSG_RESULT([Checking if small filter is disabled... no]))

dnl # Include resampling large filter
AC_SUBST(ac_no_large_filter)
AC_ARG_ENABLE(large-filter,
	      AC_HELP_STRING([--disable-large-filter],
			     [Exclude large filter in resampling]),
	      [if test "$enable_large_filter" = "no"; then
		[ac_no_large_filter='-DPJMEDIA_HAS_LARGE_FILTER=0']
		AC_MSG_RESULT([Checking if large filter is disabled... yes])
	       fi],
	      AC_MSG_RESULT([Checking if large filter is disabled... no]))

dnl # Include Speex AEC
AC_SUBST(ac_no_speex_aec)
AC_ARG_ENABLE(speex-aec,
	      AC_HELP_STRING([--disable-speex-aec],
			     [Exclude Speex Acoustic Echo Canceller/AEC]),
	      [if test "$enable_speex_aec" = "no"; then
		[ac_no_speex_aec='-DPJMEDIA_HAS_SPEEX_AEC=0']
		AC_MSG_RESULT([Checking if Speex AEC is disabled...yes])
	       fi],
	      AC_MSG_RESULT([Checking if Speex AEC is disabled...no]))

dnl # Include G711 codec
AC_SUBST(ac_no_g711_codec)
AC_ARG_ENABLE(g711-codec,
	      AC_HELP_STRING([--disable-g711-codec],
			     [Exclude G.711 codecs from the build]),
	      [if test "$enable_g711_codec" = "no"; then
		[ac_no_g711_codec=1]
		AC_DEFINE(PJMEDIA_HAS_G711_CODEC,0)
		AC_MSG_RESULT([Checking if G.711 codec is disabled...yes])
	       fi],
	      AC_MSG_RESULT([Checking if G.711 codec is disabled...no]))


dnl # Include L16 codec
AC_SUBST(ac_no_l16_codec)
AC_ARG_ENABLE(l16-codec,
	      AC_HELP_STRING([--disable-l16-codec],
			     [Exclude Linear/L16 codec family from the build]),
	      [if test "$enable_l16_codec" = "no"; then
		[ac_no_l16_codec=1]
		AC_DEFINE(PJMEDIA_HAS_L16_CODEC,0)
		AC_MSG_RESULT([Checking if L16 codecs are disabled...yes])
	       fi],
	      AC_MSG_RESULT([Checking if L16 codec is disabled...no]))


dnl # Include GSM codec
AC_SUBST(ac_no_gsm_codec)
AC_ARG_ENABLE(gsm-codec,
	      AC_HELP_STRING([--disable-gsm-codec],
			     [Exclude GSM codec in the build]),
	      [if test "$enable_gsm_codec" = "no"; then
		[ac_no_gsm_codec=1]
		AC_DEFINE(PJMEDIA_HAS_GSM_CODEC,0)
		AC_MSG_RESULT([Checking if GSM codec is disabled...yes])
	       fi],
	      AC_MSG_RESULT([Checking if GSM codec is disabled...no]))

dnl # Include Speex codec
AC_SUBST(ac_no_speex_codec)
AC_ARG_ENABLE(speex-codec,
	      AC_HELP_STRING([--disable-speex-codec],
			     [Exclude Speex codecs in the build]),
	      [if test "$enable_speex_codec" = "no"; then
		[ac_no_speex_codec=1]
		AC_DEFINE(PJMEDIA_HAS_SPEEX_CODEC,0)
		AC_MSG_RESULT([Checking if Speex codec is disabled...yes])
	       fi],
	      AC_MSG_RESULT([Checking if Speex codec is disabled...no]))

dnl # Include iLBC codec
AC_SUBST(ac_no_ilbc_codec)
AC_ARG_ENABLE(ilbc-codec,
	      AC_HELP_STRING([--disable-ilbc-codec],
			     [Exclude iLBC codec in the build]),
	      [if test "$enable_ilbc_codec" = "no"; then
		[ac_no_ilbc_codec=1]
		AC_DEFINE(PJMEDIA_HAS_ILBC_CODEC,0)
		AC_MSG_RESULT([Checking if iLBC codec is disabled...yes])
	       fi],
	      AC_MSG_RESULT([Checking if iLBC codec is disabled...no]))

dnl # Include libsamplerate
AC_ARG_ENABLE(libsamplerate,
	      AC_HELP_STRING([--enable-libsamplerate],
			     [Link with libsamplerate when available. Note that PJMEDIA_RESAMPLE_IMP must also be configured]),
	      [ AC_CHECK_LIB(samplerate,src_new) ],
	      AC_MSG_RESULT([Skipping libsamplerate detection])
	     )


dnl ##########################################
dnl #
dnl # PJSIP CONFIG
dnl #

dnl # Include SSL support
AC_SUBST(ac_no_ssl)
AC_ARG_ENABLE(ssl,
	      AC_HELP_STRING([--disable-ssl],
			     [Exclude SSL support the build (default: autodetect)])
	      ,
	      [
		if test "$enable_ssl" = "no"; then
		 [ac_no_ssl=1]
		 AC_MSG_RESULT([Checking if SSL support is disabled... yes])
	        fi
	      ],
	      [
		AC_MSG_RESULT([checking for OpenSSL installations..])
		AC_SUBST(openssl_h_present)
		AC_SUBST(libssl_present)
		AC_SUBST(libcrypto_present)
		AC_CHECK_HEADER(openssl/ssl.h,[openssl_h_present=1])
		AC_CHECK_LIB(ssl,SSL_library_init,[libssl_present=1 && LIBS="$LIBS -lssl"])
		AC_CHECK_LIB(crypto,ERR_load_BIO_strings,[libcrypto_present=1 && LIBS="$LIBS -lcrypto"])
		if test "x$openssl_h_present" = "x1" -a "x$libssl_present" = "x1" -a "x$libcrypto_present" = "x1"; then
	        	AC_MSG_RESULT([OpenSSL library found, SSL support enabled])
			AC_DEFINE(PJSIP_HAS_TLS_TRANSPORT, 1)
		else
			AC_MSG_RESULT([** OpenSSL libraries not found, disabling SSL support **])
		fi
	      ])


dnl ##########################################
dnl #
dnl # MANUAL CONFIG
dnl #


dnl # Determine if select() requires nfds to be filled up with
dnl # correct value (max_fd+1). If zero, nfds will be filled up with
dnl # PJ_FD_SETSIZE
AC_MSG_CHECKING([if select() needs correct nfds])
case $target in
  *rtems*) AC_DEFINE(PJ_SELECT_NEEDS_NFDS,1)
	   AC_MSG_RESULT(yes)
	;;
  *) AC_DEFINE(PJ_SELECT_NEEDS_NFDS,0)
     AC_MSG_RESULT([no (default)])
     AC_MSG_RESULT([** Decided that select() doesn't need correct nfds (please check)])
	;;
esac

dnl # Determine if pj_thread_create() should enforce thread stack size when
dnl # creating thread. Default is zero, to allow OS to allocate appropriate
dnl # thread's stack size.
AC_MSG_CHECKING([if pj_thread_create() should enforce stack size])
case $target in
  *rtems*) AC_DEFINE(PJ_THREAD_SET_STACK_SIZE,1)
	   AC_MSG_RESULT(yes)
	;;
  *) AC_DEFINE(PJ_THREAD_SET_STACK_SIZE,0)
     AC_MSG_RESULT([no (default)])
	;;
esac

dnl # Determine if pj_thread_create() should allocate thread's stack from
dnl # the pool. Default is zero, to let OS allocate thread's stack.
AC_MSG_CHECKING([if pj_thread_create() should allocate stack])
case $target in
  *rtems*) AC_DEFINE(PJ_THREAD_ALLOCATE_STACK,1)
	   AC_MSG_RESULT(yes)
	;;
  *) AC_DEFINE(PJ_THREAD_ALLOCATE_STACK,0)
     AC_MSG_RESULT([no (default)])
	;;
esac

dnl # This value specifies the value set in errno by the OS when a non-blocking
dnl # socket recv() can not return immediate data.
case $target in
  *mingw* | *cygw* | *win32* | *w32* )
	AC_DEFINE(PJ_BLOCKING_ERROR_VAL,WSAEWOULDBLOCK)
	;;
  *) AC_DEFINE(PJ_BLOCKING_ERROR_VAL,EAGAIN)
     AC_MSG_RESULT([** Setting non-blocking recv() retval to EAGAIN (please check)])
	;;
esac

dnl # This value specifies the value set in errno by the OS when a non-blocking
dnl # socket connect() can not get connected immediately.
case $target in
  *mingw* | *cygw* | *win32* | *w32* )
	AC_DEFINE(PJ_BLOCKING_CONNECT_ERROR_VAL,WSAEWOULDBLOCK)
	;;
  *) AC_DEFINE(PJ_BLOCKING_CONNECT_ERROR_VAL,EINPROGRESS)
     AC_MSG_RESULT([** Setting non-blocking connect() retval to EINPROGRESS (please check)])
	;;
esac


AC_SUBST(target)
AC_SUBST(ac_cross_compile)
if test "$build" = "$host"; then
    ac_cross_compile=
else
    ac_cross_compile=${host_orig}-
fi
AC_SUBST(ac_linux_poll,select)
AC_SUBST(ac_host,unix)
AC_SUBST(ac_main_obj)
case $target in
  *rtems*)
	ac_main_obj=main_rtems.o
	;;
  *)
	ac_main_obj=main.o
	;;
esac
AC_SUBST(CC)
AC_OUTPUT()


AC_MSG_RESULT([

Configurations for current target have been written to 'build.mak', and 'os-auto.mak' in various build directories, and pjlib/include/pj/compat/os_auto.h.

Further customizations can be put in:
  - 'user.mak'
  - 'pjlib/include/pj/config_site.h'

The next step now is to run 'make dep' and 'make'.
])