Merged revisions 151242-151243 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

................
  r151242 | kpfleming | 2008-10-20 07:59:04 +0300 (Mon, 20 Oct 2008) | 9 lines
  
  Merged revisions 151240 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r151240 | kpfleming | 2008-10-20 07:45:56 +0300 (Mon, 20 Oct 2008) | 3 lines
    
    break up acinclude.m4 into individual files, which will make it easier to maintain, easier to add new macros (less patching) and will ease maintenance of these macros across Asterisk branches
  ........
................
  r151243 | kpfleming | 2008-10-20 08:00:56 +0300 (Mon, 20 Oct 2008) | 9 lines
  
  Merged revisions 151241 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r151241 | kpfleming | 2008-10-20 07:57:33 +0300 (Mon, 20 Oct 2008) | 2 lines
    
    rename this macro to properly reflect what it does
  ........
................


git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.0@151244 f38db490-d61c-443f-a65b-d21fe96a405b

15 files changed, 1071 insertions, 0 deletions

diff --git a/autoconf/acx_pthread.m4 b/autoconf/acx_pthread.m4
new file mode 100644
index 000000000..b7ee73ddb
--- /dev/null
+++ b/autoconf/acx_pthread.m4
@@ -0,0 +1,243 @@
+dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+dnl
+dnl @summary figure out how to build C programs using POSIX threads
+dnl
+dnl This macro figures out how to build C programs using POSIX threads.
+dnl It sets the PTHREAD_LIBS output variable to the threads library and
+dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
+dnl C compiler flags that are needed. (The user can also force certain
+dnl compiler flags/libs to be tested by setting these environment
+dnl variables.)
+dnl
+dnl Also sets PTHREAD_CC to any special C compiler that is needed for
+dnl multi-threaded programs (defaults to the value of CC otherwise).
+dnl (This is necessary on AIX to use the special cc_r compiler alias.)
+dnl
+dnl NOTE: You are assumed to not only compile your program with these
+dnl flags, but also link it with them as well. e.g. you should link
+dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
+dnl $LIBS
+dnl
+dnl If you are only building threads programs, you may wish to use
+dnl these variables in your default LIBS, CFLAGS, and CC:
+dnl
+dnl        LIBS="$PTHREAD_LIBS $LIBS"
+dnl        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+dnl        CC="$PTHREAD_CC"
+dnl
+dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
+dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
+dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+dnl
+dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
+dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
+dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
+dnl default action will define HAVE_PTHREAD.
+dnl
+dnl Please let the authors know if this macro fails on any platform, or
+dnl if you have any other suggestions or comments. This macro was based
+dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
+dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
+dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
+dnl We are also grateful for the helpful feedback of numerous users.
+dnl
+dnl @category InstalledPackages
+dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
+dnl @version 2006-05-29
+dnl @license GPLWithACException
+
+AC_DEFUN([ACX_PTHREAD],
+[
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_SAVE
+AC_LANG_C
+acx_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
+        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
+        AC_MSG_RESULT($acx_pthread_ok)
+        if test x"$acx_pthread_ok" = xno; then
+                PTHREAD_LIBS=""
+                PTHREAD_CFLAGS=""
+        fi
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try.  Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important.  Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+#       other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+#      doesn't hurt to check since this sometimes defines pthreads too;
+#      also defines -D_REENTRANT)
+#      ... -mt is also the pthreads flag for HP/aCC
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case "${host_cpu}-${host_os}" in
+        *solaris*)
+
+        # On Solaris (at least, for some versions), libc contains stubbed
+        # (non-functional) versions of the pthreads routines, so link-based
+        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
+        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
+        # a function called by this macro, so we could check for that, but
+        # who knows whether they'll stub that too in a future libc.)  So,
+        # we'll just look for -pthreads and -lpthread first:
+
+        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
+        ;;
+esac
+
+if test x"$acx_pthread_ok" = xno; then
+for flag in $acx_pthread_flags; do
+
+        case $flag in
+                none)
+                AC_MSG_CHECKING([whether pthreads work without any flags])
+                ;;
+
+                -*)
+                AC_MSG_CHECKING([whether pthreads work with $flag])
+                PTHREAD_CFLAGS="$flag"
+                ;;
+
+		pthread-config)
+		AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
+		if test x"$acx_pthread_config" = xno; then continue; fi
+		PTHREAD_CFLAGS="`pthread-config --cflags`"
+		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+		;;
+
+                *)
+                AC_MSG_CHECKING([for the pthreads library -l$flag])
+                PTHREAD_LIBS="-l$flag"
+                ;;
+        esac
+
+        save_LIBS="$LIBS"
+        save_CFLAGS="$CFLAGS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Check for various functions.  We must include pthread.h,
+        # since some functions may be macros.  (On the Sequent, we
+        # need a special flag -Kthread to make this header compile.)
+        # We check for pthread_join because it is in -lpthread on IRIX
+        # while pthread_create is in libc.  We check for pthread_attr_init
+        # due to DEC craziness with -lpthreads.  We check for
+        # pthread_cleanup_push because it is one of the few pthread
+        # functions on Solaris that doesn't have a non-functional libc stub.
+        # We try pthread_create on general principles.
+        AC_TRY_LINK([#include <pthread.h>],
+                    [pthread_t th; pthread_join(th, 0);
+                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
+                     pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+                    [acx_pthread_ok=yes])
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        AC_MSG_RESULT($acx_pthread_ok)
+        if test "x$acx_pthread_ok" = xyes; then
+                break;
+        fi
+
+        PTHREAD_LIBS=""
+        PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$acx_pthread_ok" = xyes; then
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+	AC_MSG_CHECKING([for joinable pthread attribute])
+	attr_name=unknown
+	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+	    AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
+                        [attr_name=$attr; break])
+	done
+        AC_MSG_RESULT($attr_name)
+        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+            AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
+                               [Define to necessary symbol if this constant
+                                uses a non-standard name on your system.])
+        fi
+
+        AC_MSG_CHECKING([if more special flags are required for pthreads])
+        flag=no
+        case "${host_cpu}-${host_os}" in
+            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
+            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
+        esac
+        AC_MSG_RESULT(${flag})
+        if test "x$flag" != xno; then
+            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+        fi
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        # More AIX lossage: must compile with xlc_r or cc_r
+	if test x"$GCC" != xyes; then
+          AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
+        else
+          PTHREAD_CC=$CC
+	fi
+else
+        PTHREAD_CC="$CC"
+fi
+
+AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_CC)
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_pthread_ok" = xyes; then
+        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
+        :
+else
+        acx_pthread_ok=no
+        $2
+fi
+AC_LANG_RESTORE
+])dnl ACX_PTHREAD
diff --git a/autoconf/ast_c_compile_check.m4 b/autoconf/ast_c_compile_check.m4
new file mode 100644
index 000000000..0d49ec3ca
--- /dev/null
+++ b/autoconf/ast_c_compile_check.m4
@@ -0,0 +1,31 @@
+# Check if a given expression will compile using a certain header.
+
+# AST_C_COMPILE_CHECK([package], [expression], [header file], [version], [description])
+AC_DEFUN([AST_C_COMPILE_CHECK],
+[
+    if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
+        if test "x$5" != "x"; then
+            AC_MSG_CHECKING([for $5])
+	else
+            AC_MSG_CHECKING([if "$2" compiles using $3])
+	fi
+	saved_cppflags="${CPPFLAGS}"
+	if test "x${$1_DIR}" != "x"; then
+	    $1_INCLUDE="-I${$1_DIR}/include"
+	fi
+	CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
+
+	AC_COMPILE_IFELSE(
+	    [ AC_LANG_PROGRAM( [#include <$3>],
+			       [ $2; ]
+			       )],
+	    [   AC_MSG_RESULT(yes)
+		PBX_$1=1
+		AC_DEFINE([HAVE_$1], 1, [Define if your system has the $1 headers.])
+		AC_DEFINE([HAVE_$1_VERSION], $4, [Define $1 headers version])
+	    ],
+	    [       AC_MSG_RESULT(no) ] 
+	)
+	CPPFLAGS="${saved_cppflags}"
+    fi
+])
diff --git a/autoconf/ast_c_define_check.m4 b/autoconf/ast_c_define_check.m4
new file mode 100644
index 000000000..adf31223e
--- /dev/null
+++ b/autoconf/ast_c_define_check.m4
@@ -0,0 +1,33 @@
+# Check if a given macro is defined in a certain header.
+
+# AST_C_DEFINE_CHECK([package], [macro name], [header file], [version])
+AC_DEFUN([AST_C_DEFINE_CHECK],
+[
+    if test "x${PBX_$1}" != "x1"; then
+	AC_MSG_CHECKING([for $2 in $3])
+	saved_cppflags="${CPPFLAGS}"
+	if test "x${$1_DIR}" != "x"; then
+	    $1_INCLUDE="-I${$1_DIR}/include"
+	fi
+	CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
+
+	AC_COMPILE_IFELSE(
+	    [ AC_LANG_PROGRAM( [#include <$3>],
+			       [#if defined($2)
+				int foo = 0;
+			        #else
+			        int foo = bar;
+			        #endif
+				0
+			       ])],
+	    [   AC_MSG_RESULT(yes)
+		PBX_$1=1
+		AC_DEFINE([HAVE_$1], 1, [Define if your system has the $1 headers.])
+		AC_DEFINE([HAVE_$1_VERSION], $4, [Define $1 headers version])
+	    ],
+	    [   AC_MSG_RESULT(no) ] 
+	)
+	CPPFLAGS="${saved_cppflags}"
+    fi
+    AC_SUBST(PBX_$1)
+])
diff --git a/autoconf/ast_check_gnu_make.m4 b/autoconf/ast_check_gnu_make.m4
new file mode 100644
index 000000000..454f1997f
--- /dev/null
+++ b/autoconf/ast_check_gnu_make.m4
@@ -0,0 +1,20 @@
+AC_DEFUN([AST_CHECK_GNU_MAKE], [AC_CACHE_CHECK(for GNU make, GNU_MAKE,
+   GNU_MAKE='Not Found' ;
+   GNU_MAKE_VERSION_MAJOR=0 ;
+   GNU_MAKE_VERSION_MINOR=0 ;
+   for a in make gmake gnumake ; do
+      if test -z "$a" ; then continue ; fi ;
+      if ( sh -c "$a --version" 2> /dev/null | grep GNU  2>&1 > /dev/null ) ;  then
+         GNU_MAKE=$a ;
+         GNU_MAKE_VERSION_MAJOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
+         GNU_MAKE_VERSION_MINOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
+         break;
+      fi
+   done ;
+) ;
+if test  "x$GNU_MAKE" = "xNot Found"  ; then
+   AC_MSG_ERROR( *** Please install GNU make.  It is required to build Asterisk!)
+   exit 1
+fi
+AC_SUBST([GNU_MAKE])
+])
diff --git a/autoconf/ast_check_mandatory.m4 b/autoconf/ast_check_mandatory.m4
new file mode 100644
index 000000000..98e4a48b7
--- /dev/null
+++ b/autoconf/ast_check_mandatory.m4
@@ -0,0 +1,23 @@
+# Check whether any of the mandatory modules are not present, and
+# print error messages in case. The mandatory list is built using
+# --with-* arguments when invoking configure.
+
+AC_DEFUN([AST_CHECK_MANDATORY],
+[
+	AC_MSG_CHECKING([for mandatory modules: ${ac_mandatory_list}])
+	err=0;
+	for i in ${ac_mandatory_list}; do
+		eval "a=\${PBX_$i}"
+		if test "x${a}" = "x1" ; then continue; fi
+		if test ${err} = "0" ; then AC_MSG_RESULT(fail) ; fi
+		AC_MSG_RESULT()
+		eval "a=\${${i}_OPTION}"
+		AC_MSG_NOTICE([***])
+		AC_MSG_NOTICE([*** The $i installation appears to be missing or broken.])
+		AC_MSG_NOTICE([*** Either correct the installation, or run configure])
+		AC_MSG_NOTICE([*** including --without-${a}.])
+		err=1
+	done
+	if test $err = 1 ; then exit 1; fi
+	AC_MSG_RESULT(ok)
+])
diff --git a/autoconf/ast_check_openh323.m4 b/autoconf/ast_check_openh323.m4
new file mode 100644
index 000000000..b3dfb925f
--- /dev/null
+++ b/autoconf/ast_check_openh323.m4
@@ -0,0 +1,127 @@
+AC_DEFUN([AST_CHECK_OPENH323], [
+OPENH323_INCDIR=
+OPENH323_LIBDIR=
+AC_LANG_PUSH([C++])
+if test "${OPENH323DIR:-unset}" != "unset" ; then
+  AC_CHECK_HEADER(${OPENH323DIR}/version.h, HAS_OPENH323=1, )
+fi
+if test "${HAS_OPENH323:-unset}" = "unset" ; then
+  AC_CHECK_HEADER(${PWLIBDIR}/../openh323/version.h, OPENH323DIR="${PWLIBDIR}/../openh323"; HAS_OPENH323=1, )
+  if test "${HAS_OPENH323:-unset}" != "unset" ; then
+    OPENH323DIR="${PWLIBDIR}/../openh323"
+    saved_cppflags="${CPPFLAGS}"
+    CPPFLAGS="${CPPFLAGS} -I${PWLIB_INCDIR}/openh323 -I${PWLIB_INCDIR}"
+    AC_CHECK_HEADER(${OPENH323DIR}/include/h323.h, , OPENH323_INCDIR="${PWLIB_INCDIR}/openh323"; OPENH323_LIBDIR="${PWLIB_LIBDIR}", [#include <ptlib.h>])
+    CPPFLAGS="${saved_cppflags}"
+  else
+    saved_cppflags="${CPPFLAGS}"
+    CPPFLAGS="${CPPFLAGS} -I${HOME}/openh323/include -I${PWLIB_INCDIR}"
+    AC_CHECK_HEADER(${HOME}/openh323/include/h323.h, HAS_OPENH323=1, )
+    CPPFLAGS="${saved_cppflags}"
+    if test "${HAS_OPENH323:-unset}" != "unset" ; then
+      OPENH323DIR="${HOME}/openh323"
+    else
+      saved_cppflags="${CPPFLAGS}"
+      CPPFLAGS="${CPPFLAGS} -I/usr/local/include/openh323 -I${PWLIB_INCDIR}"
+      AC_CHECK_HEADER(/usr/local/include/openh323/h323.h, HAS_OPENH323=1, )
+      CPPFLAGS="${saved_cppflags}"
+      if test "${HAS_OPENH323:-unset}" != "unset" ; then
+        OPENH323DIR="/usr/local/share/openh323"
+        OPENH323_INCDIR="/usr/local/include/openh323"
+        if test "x$LIB64" != "x"; then
+          OPENH323_LIBDIR="/usr/local/lib64"
+        else
+          OPENH323_LIBDIR="/usr/local/lib"
+        fi
+      else
+        saved_cppflags="${CPPFLAGS}"
+        CPPFLAGS="${CPPFLAGS} -I/usr/include/openh323 -I${PWLIB_INCDIR}"
+        AC_CHECK_HEADER(/usr/include/openh323/h323.h, HAS_OPENH323=1, , [#include <ptlib.h>])
+        CPPFLAGS="${saved_cppflags}"
+        if test "${HAS_OPENH323:-unset}" != "unset" ; then
+          OPENH323DIR="/usr/share/openh323"
+          OPENH323_INCDIR="/usr/include/openh323"
+          if test "x$LIB64" != "x"; then
+            OPENH323_LIBDIR="/usr/lib64"
+          else
+            OPENH323_LIBDIR="/usr/lib"
+          fi
+        fi
+      fi
+    fi
+  fi
+fi
+
+if test "${HAS_OPENH323:-unset}" != "unset" ; then
+  if test "${OPENH323_INCDIR:-unset}" = "unset"; then
+    OPENH323_INCDIR="${OPENH323DIR}/include"
+  fi
+  if test "${OPENH323_LIBDIR:-unset}" = "unset"; then
+    OPENH323_LIBDIR="${OPENH323DIR}/lib"
+  fi
+
+  OPENH323_LIBDIR="`cd ${OPENH323_LIBDIR}; pwd`"
+  OPENH323_INCDIR="`cd ${OPENH323_INCDIR}; pwd`"
+  OPENH323DIR="`cd ${OPENH323DIR}; pwd`"
+
+  AC_SUBST([OPENH323DIR])
+  AC_SUBST([OPENH323_INCDIR])
+  AC_SUBST([OPENH323_LIBDIR])
+fi
+  AC_LANG_POP([C++])
+])
+
+AC_DEFUN([AST_CHECK_OPENH323_BUILD], [
+	if test "${HAS_OPENH323:-unset}" != "unset"; then
+		AC_MSG_CHECKING(OpenH323 build option)
+		OPENH323_SUFFIX=
+		prefixes="h323_${PWLIB_PLATFORM}_ h323_ openh323"
+		for pfx in $prefixes; do
+			files=`ls -l ${OPENH323_LIBDIR}/lib${pfx}*.so* 2>/dev/null`
+			libfile=
+			if test -n "$files"; then
+				for f in $files; do
+					if test -f $f -a ! -L $f; then
+						libfile=`basename $f`
+						break;
+					fi
+				done
+			fi
+			if test -n "$libfile"; then
+				OPENH323_PREFIX=$pfx
+				break;
+			fi
+		done
+		if test "${libfile:-unset}" != "unset"; then
+			OPENH323_SUFFIX=`eval "echo ${libfile} | sed -e 's/lib${OPENH323_PREFIX}\(@<:@^.@:>@*\)\..*/\1/'"`
+		fi
+		case "${OPENH323_SUFFIX}" in
+			n)
+				OPENH323_BUILD="notrace";;
+			r)
+				OPENH323_BUILD="opt";;
+			d)
+				OPENH323_BUILD="debug";;
+			*)
+				if test "${OPENH323_PREFIX:-undef}" = "openh323"; then
+					notrace=`eval "grep NOTRACE ${OPENH323DIR}/openh323u.mak | grep = | sed -e 's/@<:@A-Z0-9_@:>@*@<:@ 	@:>@*=@<:@ 	@:>@*//'"`
+					if test "x$notrace" = "x"; then
+						notrace="0"
+					fi
+					if test "$notrace" -ne 0; then
+						OPENH323_BUILD="notrace"
+					else
+						OPENH323_BUILD="opt"
+					fi
+					OPENH323_LIB="-l${OPENH323_PREFIX}"
+				else
+					OPENH323_BUILD="notrace"
+				fi
+				;;
+		esac
+		AC_MSG_RESULT(${OPENH323_BUILD})
+
+		AC_SUBST([OPENH323_SUFFIX])
+		AC_SUBST([OPENH323_BUILD])
+	fi
+])
diff --git a/autoconf/ast_check_pwlib.m4 b/autoconf/ast_check_pwlib.m4
new file mode 100644
index 000000000..9d8339a18
--- /dev/null
+++ b/autoconf/ast_check_pwlib.m4
@@ -0,0 +1,254 @@
+AC_DEFUN([AST_CHECK_PWLIB_PLATFORM], [
+PWLIB_OSTYPE=
+case "$host_os" in
+  linux*)          PWLIB_OSTYPE=linux ;
+  		;;
+  freebsd* )       PWLIB_OSTYPE=FreeBSD ;
+  		;;
+  openbsd* )       PWLIB_OSTYPE=OpenBSD ;
+				   ENDLDLIBS="-lossaudio" ;
+		;;
+  netbsd* )        PWLIB_OSTYPE=NetBSD ;
+				   ENDLDLIBS="-lossaudio" ;
+		;;
+  solaris* | sunos* ) PWLIB_OSTYPE=solaris ;
+		;;
+  darwin* )	       PWLIB_OSTYPE=Darwin ;
+		;;
+  beos*)           PWLIB_OSTYPE=beos ;
+                   STDCCFLAGS="$STDCCFLAGS -D__BEOS__"
+		;;
+  cygwin*)         PWLIB_OSTYPE=cygwin ;
+		;;
+  mingw*)	       PWLIB_OSTYPE=mingw ;
+		           STDCCFLAGS="$STDCCFLAGS -mms-bitfields" ;
+		           ENDLDLIBS="-lwinmm -lwsock32 -lsnmpapi -lmpr -lcomdlg32 -lgdi32 -lavicap32" ;
+		;;
+  * )		       PWLIB_OSTYPE="$host_os" ;
+		           AC_MSG_WARN("OS $PWLIB_OSTYPE not recognized - proceed with caution!") ;
+		;;
+esac
+
+PWLIB_MACHTYPE=
+case "$host_cpu" in
+   x86 | i686 | i586 | i486 | i386 ) PWLIB_MACHTYPE=x86
+                   ;;
+
+   x86_64)	   PWLIB_MACHTYPE=x86_64 ;
+		   P_64BIT=1 ;
+                   LIB64=1 ;
+		   ;;
+
+   alpha | alphaev56 | alphaev6 | alphaev67 | alphaev7) PWLIB_MACHTYPE=alpha ;
+		   P_64BIT=1 ;
+		   ;;
+
+   sparc )         PWLIB_MACHTYPE=sparc ;
+		   ;;
+
+   powerpc )       PWLIB_MACHTYPE=ppc ;
+		   ;;
+
+   ppc )           PWLIB_MACHTYPE=ppc ;
+		   ;;
+
+   powerpc64 )     PWLIB_MACHTYPE=ppc64 ;
+		   P_64BIT=1 ;
+                   LIB64=1 ;
+		   ;;
+
+   ppc64 )         PWLIB_MACHTYPE=ppc64 ;
+		   P_64BIT=1 ;
+                   LIB64=1 ;
+		   ;;
+
+   ia64)	   PWLIB_MACHTYPE=ia64 ;
+		   P_64BIT=1 ;
+	  	   ;;
+
+   s390x)	   PWLIB_MACHTYPE=s390x ;
+		   P_64BIT=1 ;
+                   LIB64=1 ;
+		   ;;
+
+   s390)	   PWLIB_MACHTYPE=s390 ;
+		   ;;
+
+   * )		   PWLIB_MACHTYPE="$host_cpu";
+		   AC_MSG_WARN("CPU $PWLIB_MACHTYPE not recognized - proceed with caution!") ;;
+esac
+
+PWLIB_PLATFORM="${PWLIB_OSTYPE}_${PWLIB_MACHTYPE}"
+
+AC_SUBST([PWLIB_PLATFORM])
+])
+
+AC_DEFUN([AST_CHECK_PWLIB], [
+PWLIB_INCDIR=
+PWLIB_LIBDIR=
+AC_LANG_PUSH([C++])
+if test "${PWLIBDIR:-unset}" != "unset" ; then
+  AC_CHECK_HEADER(${PWLIBDIR}/version.h, HAS_PWLIB=1, )
+fi
+if test "${HAS_PWLIB:-unset}" = "unset" ; then
+  if test "${OPENH323DIR:-unset}" != "unset"; then
+    AC_CHECK_HEADER(${OPENH323DIR}/../pwlib/version.h, HAS_PWLIB=1, )
+  fi
+  if test "${HAS_PWLIB:-unset}" != "unset" ; then
+    PWLIBDIR="${OPENH323DIR}/../pwlib"
+  else
+    AC_CHECK_HEADER(${HOME}/pwlib/include/ptlib.h, HAS_PWLIB=1, )
+    if test "${HAS_PWLIB:-unset}" != "unset" ; then
+      PWLIBDIR="${HOME}/pwlib"
+    else
+      AC_CHECK_HEADER(/usr/local/include/ptlib.h, HAS_PWLIB=1, )
+      if test "${HAS_PWLIB:-unset}" != "unset" ; then
+        AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/local/bin)
+        if test "${PTLIB_CONFIG:-unset}" = "unset" ; then
+          AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/local/share/pwlib/make)
+        fi
+        PWLIB_INCDIR="/usr/local/include"
+        PWLIB_LIBDIR=`${PTLIB_CONFIG} --pwlibdir`
+        if test "${PWLIB_LIBDIR:-unset}" = "unset"; then
+          if test "x$LIB64" != "x"; then
+            PWLIB_LIBDIR="/usr/local/lib64"
+          else
+            PWLIB_LIBDIR="/usr/local/lib"
+          fi
+        fi
+        PWLIB_LIB=`${PTLIB_CONFIG} --ldflags --libs`
+        PWLIB_LIB="-L${PWLIB_LIBDIR} `echo ${PWLIB_LIB}`"
+      else
+        AC_CHECK_HEADER(/usr/include/ptlib.h, HAS_PWLIB=1, )
+        if test "${HAS_PWLIB:-unset}" != "unset" ; then
+          AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/share/pwlib/make)
+          PWLIB_INCDIR="/usr/include"
+          PWLIB_LIBDIR=`${PTLIB_CONFIG} --pwlibdir`
+          if test "${PWLIB_LIBDIR:-unset}" = "unset"; then
+            if test "x$LIB64" != "x"; then
+              PWLIB_LIBDIR="/usr/lib64"
+            else
+              PWLIB_LIBDIR="/usr/lib"
+            fi
+          fi
+          PWLIB_LIB=`${PTLIB_CONFIG} --ldflags --libs`
+          PWLIB_LIB="-L${PWLIB_LIBDIR} `echo ${PWLIB_LIB}`"
+        fi
+      fi
+    fi
+  fi
+fi
+
+#if test "${HAS_PWLIB:-unset}" = "unset" ; then
+#  echo "Cannot find pwlib - please install or set PWLIBDIR and try again"
+#  exit
+#fi
+
+if test "${HAS_PWLIB:-unset}" != "unset" ; then
+  if test "${PWLIBDIR:-unset}" = "unset" ; then
+    if test "${PTLIB_CONFIG:-unset}" != "unset" ; then
+      PWLIBDIR=`$PTLIB_CONFIG --prefix`
+    else
+      echo "Cannot find ptlib-config - please install and try again"
+      exit
+    fi
+  fi
+
+  if test "x$PWLIBDIR" = "x/usr" -o "x$PWLIBDIR" = "x/usr/"; then
+    PWLIBDIR="/usr/share/pwlib"
+    PWLIB_INCDIR="/usr/include"
+    if test "x$LIB64" != "x"; then
+      PWLIB_LIBDIR="/usr/lib64"
+    else
+      PWLIB_LIBDIR="/usr/lib"
+    fi
+  fi
+  if test "x$PWLIBDIR" = "x/usr/local" -o "x$PWLIBDIR" = "x/usr/"; then
+    PWLIBDIR="/usr/local/share/pwlib"
+    PWLIB_INCDIR="/usr/local/include"
+    if test "x$LIB64" != "x"; then
+      PWLIB_LIBDIR="/usr/local/lib64"
+    else
+      PWLIB_LIBDIR="/usr/local/lib"
+    fi
+  fi
+
+  if test "${PWLIB_INCDIR:-unset}" = "unset"; then
+    PWLIB_INCDIR="${PWLIBDIR}/include"
+  fi
+  if test "${PWLIB_LIBDIR:-unset}" = "unset"; then
+    PWLIB_LIBDIR="${PWLIBDIR}/lib"
+  fi
+
+  AC_SUBST([PWLIBDIR])
+  AC_SUBST([PWLIB_INCDIR])
+  AC_SUBST([PWLIB_LIBDIR])
+fi
+  AC_LANG_POP([C++])
+])
+
+AC_DEFUN([AST_CHECK_PWLIB_VERSION], [
+	if test "${HAS_$2:-unset}" != "unset"; then
+		$2_VERSION=`grep "$2_VERSION" ${$2_INCDIR}/$3 | sed -e 's/[[[:space:]]]\{1,\}/ /g' | cut -f3 -d ' ' | sed -e 's/"//g'`
+		$2_MAJOR_VERSION=`echo ${$2_VERSION} | cut -f1 -d.`
+		$2_MINOR_VERSION=`echo ${$2_VERSION} | cut -f2 -d.`
+		$2_BUILD_NUMBER=`echo ${$2_VERSION} | cut -f3 -d.`
+		let $2_VER=${$2_MAJOR_VERSION}*10000+${$2_MINOR_VERSION}*100+${$2_BUILD_NUMBER}
+		let $2_REQ=$4*10000+$5*100+$6
+
+		AC_MSG_CHECKING(if $1 version ${$2_VERSION} is compatible with chan_h323)
+		if test ${$2_VER} -lt ${$2_REQ}; then
+			AC_MSG_RESULT(no)
+			unset HAS_$2
+		else
+			AC_MSG_RESULT(yes)
+		fi
+	fi
+])
+
+AC_DEFUN([AST_CHECK_PWLIB_BUILD], [
+	if test "${HAS_$2:-unset}" != "unset"; then
+	   AC_MSG_CHECKING($1 installation validity)
+
+	   saved_cppflags="${CPPFLAGS}"
+	   saved_libs="${LIBS}"
+	   if test "${$2_LIB:-unset}" != "unset"; then
+	      LIBS="${LIBS} ${$2_LIB} $7"
+	   else
+    	      LIBS="${LIBS} -L${$2_LIBDIR} -l${PLATFORM_$2} $7"
+	   fi
+	   CPPFLAGS="${CPPFLAGS} -I${$2_INCDIR} $6"
+
+	   AC_LANG_PUSH([C++])
+
+	   AC_LINK_IFELSE(
+		[AC_LANG_PROGRAM([$4],[$5])],
+		[	AC_MSG_RESULT(yes) 
+			ac_cv_lib_$2="yes" 
+		],
+		[	AC_MSG_RESULT(no) 
+			ac_cv_lib_$2="no" 
+		]
+		)
+
+	   AC_LANG_POP([C++])
+
+	   LIBS="${saved_libs}"
+	   CPPFLAGS="${saved_cppflags}"
+
+	   if test "${ac_cv_lib_$2}" = "yes"; then
+	      if test "${$2_LIB:-undef}" = "undef"; then
+	         if test "${$2_LIBDIR}" != "" -a "${$2_LIBDIR}" != "/usr/lib"; then
+	            $2_LIB="-L${$2_LIBDIR} -l${PLATFORM_$2}"
+	         else
+	            $2_LIB="-l${PLATFORM_$2}"
+	         fi
+	      fi
+	      if test "${$2_INCDIR}" != "" -a "${$2_INCDIR}" != "/usr/include"; then
+	         $2_INCLUDE="-I${$2_INCDIR}"
+	      fi
+	   	  PBX_$2=1
+	   	  AC_DEFINE([HAVE_$2], 1, [$3])
+	   fi
+	fi
+])
diff --git a/autoconf/ast_ext_lib.m4 b/autoconf/ast_ext_lib.m4
new file mode 100644
index 000000000..57d83a5d1
--- /dev/null
+++ b/autoconf/ast_ext_lib.m4
@@ -0,0 +1,90 @@
+# Helper function to setup variables for a package.
+# $1 -> the package name. Used in configure.ac and also as a prefix
+#	for the variables ($1_DIR, $1_INCLUDE, $1_LIB) in makeopts
+# $3 ->	option name, used in --with-$3 or --without-$3 when calling configure.
+# $2 and $4 are just text describing the package (short and long form)
+
+# AST_EXT_LIB_SETUP([package], [short description], [configure option name], [long description])
+
+AC_DEFUN([AST_EXT_LIB_SETUP],
+[
+    $1_DESCRIP="$2"
+    $1_OPTION="$3"
+    AC_ARG_WITH([$3], AC_HELP_STRING([--with-$3=PATH],[use $2 files in PATH $4]),
+    [
+	case ${withval} in
+	n|no)
+	USE_$1=no
+	;;
+	y|ye|yes)
+	ac_mandatory_list="${ac_mandatory_list} $1"
+	;;
+	*)
+	$1_DIR="${withval}"
+	ac_mandatory_list="${ac_mandatory_list} $1"
+	;;
+	esac
+    ])
+    PBX_$1=0
+    AC_SUBST([$1_LIB])
+    AC_SUBST([$1_INCLUDE])
+    AC_SUBST([$1_DIR])
+    AC_SUBST([PBX_$1])
+])
+
+# Check for existence of a given package ($1), either looking up a function
+# in a library, or, if no function is supplied, only check for the
+# existence of the header files.
+
+# AST_EXT_LIB_CHECK([package], [library], [function], [header],
+#	 [extra libs], [extra cflags], [version])
+AC_DEFUN([AST_EXT_LIB_CHECK],
+[
+if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
+   pbxlibdir=""
+   # if --with-$1=DIR has been specified, use it.
+   if test "x${$1_DIR}" != "x"; then
+      if test -d ${$1_DIR}/lib; then
+      	 pbxlibdir="-L${$1_DIR}/lib"
+      else
+      	 pbxlibdir="-L${$1_DIR}"
+      fi
+   fi
+   pbxfuncname="$3"
+   if test "x${pbxfuncname}" = "x" ; then   # empty lib, assume only headers
+      AST_$1_FOUND=yes
+   else
+      AC_CHECK_LIB([$2], [${pbxfuncname}], [AST_$1_FOUND=yes], [AST_$1_FOUND=no], ${pbxlibdir} $5)
+   fi
+
+   # now check for the header.
+   if test "${AST_$1_FOUND}" = "yes"; then
+      $1_LIB="${pbxlibdir} -l$2 $5"
+      # if --with-$1=DIR has been specified, use it.
+      if test "x${$1_DIR}" != "x"; then
+	 $1_INCLUDE="-I${$1_DIR}/include"
+      fi
+      $1_INCLUDE="${$1_INCLUDE} $6"
+      if test "x$4" = "x" ; then	# no header, assume found
+         $1_HEADER_FOUND="1"
+      else				# check for the header
+         saved_cppflags="${CPPFLAGS}"
+         CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
+	 AC_CHECK_HEADER([$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0])
+         CPPFLAGS="${saved_cppflags}"
+      fi
+      if test "x${$1_HEADER_FOUND}" = "x0" ; then
+         $1_LIB=""
+         $1_INCLUDE=""
+      else
+         if test "x${pbxfuncname}" = "x" ; then		# only checking headers -> no library
+	    $1_LIB=""
+	 fi
+         PBX_$1=1
+         # XXX don't know how to evaluate the description (third argument) in AC_DEFINE_UNQUOTED
+         AC_DEFINE_UNQUOTED([HAVE_$1], 1, [Define this to indicate the ${$1_DESCRIP} library])
+	 AC_DEFINE_UNQUOTED([HAVE_$1_VERSION], [$7], [Define to indicate the ${$1_DESCRIP} library version])
+      fi
+   fi
+fi
+])
diff --git a/autoconf/ast_ext_tool_check.m4 b/autoconf/ast_ext_tool_check.m4
new file mode 100644
index 000000000..a8db547c0
--- /dev/null
+++ b/autoconf/ast_ext_tool_check.m4
@@ -0,0 +1,43 @@
+# Check for a package using $2-config. Similar to AST_EXT_LIB_CHECK,
+# but use $2-config to determine cflags and libraries to use.
+# $3 and $4 can be used to replace --cflags and --libs in the request
+
+# AST_EXT_TOOL_CHECK([package], [tool name], [--cflags], [--libs], [includes], [expression])
+AC_DEFUN([AST_EXT_TOOL_CHECK],
+[
+    if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
+	PBX_$1=0
+	AC_CHECK_TOOL(CONFIG_$1, $2-config, No)
+	if test ! "x${CONFIG_$1}" = xNo; then
+	    if test x"$3" = x ; then A=--cflags ; else A="$3" ; fi
+	    $1_INCLUDE=$(${CONFIG_$1} $A)
+	    if test x"$4" = x ; then A=--libs ; else A="$4" ; fi
+	    $1_LIB=$(${CONFIG_$1} $A)
+	    if test x"$5" != x ; then
+		saved_cppflags="${CPPFLAGS}"
+		if test "x${$1_DIR}" != "x"; then
+		    $1_INCLUDE="-I${$1_DIR}/include"
+		fi
+		CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
+
+		saved_ldflags="${LDFLAGS}"
+		LDFLAGS="${$1_LIB}"
+
+		AC_LINK_IFELSE(
+		    [ AC_LANG_PROGRAM( [ $5 ],
+				       [ $6; ]
+				       )],
+		    [   PBX_$1=1
+			AC_DEFINE([HAVE_$1], 1, [Define if your system has the $1 headers.])
+		    ],
+		    []
+		)
+		CPPFLAGS="${saved_cppflags}"
+		LDFLAGS="${saved_ldflags}"
+	    else
+		PBX_$1=1
+		AC_DEFINE([HAVE_$1], 1, [Define if your system has the $1 libraries.])
+	    fi
+	fi
+    fi
+])
diff --git a/autoconf/ast_func_fork.m4 b/autoconf/ast_func_fork.m4
new file mode 100644
index 000000000..37bf0c397
--- /dev/null
+++ b/autoconf/ast_func_fork.m4
@@ -0,0 +1,59 @@
+# AST_FUNC_FORK
+# -------------
+AN_FUNCTION([fork],  [AST_FUNC_FORK])
+AN_FUNCTION([vfork], [AST_FUNC_FORK])
+AC_DEFUN([AST_FUNC_FORK],
+[AC_REQUIRE([AC_TYPE_PID_T])dnl
+AC_CHECK_HEADERS(vfork.h)
+AC_CHECK_FUNCS(fork vfork)
+if test "x$ac_cv_func_fork" = xyes; then
+  _AST_FUNC_FORK
+else
+  ac_cv_func_fork_works=$ac_cv_func_fork
+fi
+if test "x$ac_cv_func_fork_works" = xcross; then
+  case $host in
+    *-*-amigaos* | *-*-msdosdjgpp* | *-*-uclinux* | *-*-linux-uclibc* )
+      # Override, as these systems have only a dummy fork() stub
+      ac_cv_func_fork_works=no
+      ;;
+    *)
+      ac_cv_func_fork_works=yes
+      ;;
+  esac
+  AC_MSG_WARN([result $ac_cv_func_fork_works guessed because of cross compilation])
+fi
+ac_cv_func_vfork_works=$ac_cv_func_vfork
+if test "x$ac_cv_func_vfork" = xyes; then
+  _AC_FUNC_VFORK
+fi;
+if test "x$ac_cv_func_fork_works" = xcross; then
+  ac_cv_func_vfork_works=$ac_cv_func_vfork
+  AC_MSG_WARN([result $ac_cv_func_vfork_works guessed because of cross compilation])
+fi
+
+if test "x$ac_cv_func_vfork_works" = xyes; then
+  AC_DEFINE(HAVE_WORKING_VFORK, 1, [Define to 1 if `vfork' works.])
+else
+  AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
+fi
+if test "x$ac_cv_func_fork_works" = xyes; then
+  AC_DEFINE(HAVE_WORKING_FORK, 1, [Define to 1 if `fork' works.])
+fi
+])# AST_FUNC_FORK
+
+
+# _AST_FUNC_FORK
+# -------------
+AC_DEFUN([_AST_FUNC_FORK],
+  [AC_CACHE_CHECK(for working fork, ac_cv_func_fork_works,
+    [AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
+	[
+	  /* By Ruediger Kuhlmann. */
+	  return fork () < 0;
+	])],
+      [ac_cv_func_fork_works=yes],
+      [ac_cv_func_fork_works=no],
+      [ac_cv_func_fork_works=cross])])]
+)# _AST_FUNC_FORK
diff --git a/autoconf/ast_gcc_attribute.m4 b/autoconf/ast_gcc_attribute.m4
new file mode 100644
index 000000000..d47d375e6
--- /dev/null
+++ b/autoconf/ast_gcc_attribute.m4
@@ -0,0 +1,17 @@
+# Helper function to check for gcc attributes.
+# AST_GCC_ATTRIBUTE([attribute name])
+
+AC_DEFUN([AST_GCC_ATTRIBUTE],
+[
+AC_MSG_CHECKING(for compiler 'attribute $1' support)
+saved_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Werror"
+AC_COMPILE_IFELSE(
+	AC_LANG_PROGRAM([static void __attribute__(($1)) *test(void *muffin, ...) {}],
+			[]),
+	AC_MSG_RESULT(yes)
+	AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),
+	AC_MSG_RESULT(no))
+]
+CFLAGS="$saved_CFLAGS"
+)
diff --git a/autoconf/ast_prog_egrep.m4 b/autoconf/ast_prog_egrep.m4
new file mode 100644
index 000000000..7988f8fb3
--- /dev/null
+++ b/autoconf/ast_prog_egrep.m4
@@ -0,0 +1,11 @@
+# AST_PROG_EGREP
+# -------------
+m4_ifndef([AST_PROG_EGREP], [AC_DEFUN([AST_PROG_EGREP],
+[AC_CACHE_CHECK([for egrep], [ac_cv_prog_egrep],
+   [if echo a | (grep -E '(a|b)') >/dev/null 2>&1
+    then ac_cv_prog_egrep='grep -E'
+    else ac_cv_prog_egrep='egrep'
+    fi])
+ EGREP=$ac_cv_prog_egrep
+ AC_SUBST([EGREP])
+])]) # AST_PROG_EGREP
diff --git a/autoconf/ast_prog_ld.m4 b/autoconf/ast_prog_ld.m4
new file mode 100644
index 000000000..9177fedb3
--- /dev/null
+++ b/autoconf/ast_prog_ld.m4
@@ -0,0 +1,83 @@
+# AST_PROG_LD
+# ----------
+# find the pathname to the GNU or non-GNU linker
+AC_DEFUN([AST_PROG_LD],
+[AC_ARG_WITH([gnu-ld],
+    [AC_HELP_STRING([--with-gnu-ld],
+	[assume the C compiler uses GNU ld @<:@default=no@:>@])],
+    [test "$withval" = no || with_gnu_ld=yes],
+    [with_gnu_ld=no])
+AC_REQUIRE([AST_PROG_SED])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by $CC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]]* | ?:[[\\/]]*)
+      re_direlt='/[[^/]][[^/]]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`echo $ac_prog| $SED 's%\\\\%/%g'`
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`echo $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(lt_cv_path_LD,
+[if test -z "$LD"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+      *GNU* | *'with BFD'*)
+	test "$with_gnu_ld" != no && break
+	;;
+      *)
+	test "$with_gnu_ld" != yes && break
+	;;
+      esac
+    fi
+  done
+  IFS="$lt_save_ifs"
+else
+  lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+  AC_MSG_RESULT($LD)
+else
+  AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+AST_PROG_LD_GNU
+])# AST_PROG_LD
diff --git a/autoconf/ast_prog_ld_gnu.m4 b/autoconf/ast_prog_ld_gnu.m4
new file mode 100644
index 000000000..43556ca6b
--- /dev/null
+++ b/autoconf/ast_prog_ld_gnu.m4
@@ -0,0 +1,16 @@
+# AST_PROG_LD_GNU
+# --------------
+AC_DEFUN([AST_PROG_LD_GNU],
+[AC_REQUIRE([AST_PROG_EGREP])dnl
+AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  lt_cv_prog_gnu_ld=yes
+  ;;
+*)
+  lt_cv_prog_gnu_ld=no
+  ;;
+esac])
+with_gnu_ld=$lt_cv_prog_gnu_ld
+])# AST_PROG_LD_GNU
diff --git a/autoconf/ast_prog_sed.m4 b/autoconf/ast_prog_sed.m4
new file mode 100644
index 000000000..283d52f55
--- /dev/null
+++ b/autoconf/ast_prog_sed.m4
@@ -0,0 +1,21 @@
+# AST_PROG_SED
+# -----------
+# Check for a fully functional sed program that truncates
+# as few characters as possible.  Prefer GNU sed if found.
+AC_DEFUN([AST_PROG_SED],
+[AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED,
+    [dnl ac_script should not contain more than 99 commands (for HP-UX sed),
+     dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed.
+     ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+     for ac_i in 1 2 3 4 5 6 7; do
+       ac_script="$ac_script$as_nl$ac_script"
+     done
+     echo "$ac_script" | sed 99q >conftest.sed
+     $as_unset ac_script || ac_script=
+     _AC_PATH_PROG_FEATURE_CHECK(SED, [sed gsed],
+	[_AC_FEATURE_CHECK_LENGTH([ac_path_SED], [ac_cv_path_SED],
+		["$ac_path_SED" -f conftest.sed])])])
+ SED="$ac_cv_path_SED"
+ AC_SUBST([SED])dnl
+ rm -f conftest.sed
+])# AST_PROG_SED