Merged revisions 74043 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r74043 | file | 2007-07-09 11:34:33 -0300 (Mon, 09 Jul 2007) | 2 lines

Use AC_CHECK_HEADER to check for ptlib/openh323 to allow for cross compiling. (issue #9675 reported by zandbelt)

........


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@74044 f38db490-d61c-443f-a65b-d21fe96a405b

2 files changed, 1379 insertions, 144 deletions

diff --git a/acinclude.m4 b/acinclude.m4
index 3732091fe..1363a9e20 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -179,21 +179,22 @@ AC_DEFUN(
 [AST_CHECK_PWLIB], [
 PWLIB_INCDIR=
 PWLIB_LIBDIR=
+AC_LANG_PUSH([C++])
 if test "${PWLIBDIR:-unset}" != "unset" ; then
-  AC_CHECK_FILE(${PWLIBDIR}/version.h, HAS_PWLIB=1, )
+  AC_CHECK_HEADER(${PWLIBDIR}/version.h, HAS_PWLIB=1, )
 fi
 if test "${HAS_PWLIB:-unset}" = "unset" ; then
   if test "${OPENH323DIR:-unset}" != "unset"; then
-    AC_CHECK_FILE(${OPENH323DIR}/../pwlib/version.h, HAS_PWLIB=1, )
+    AC_CHECK_HEADER(${OPENH323DIR}/../pwlib/version.h, HAS_PWLIB=1, )
   fi
   if test "${HAS_PWLIB:-unset}" != "unset" ; then
     PWLIBDIR="${OPENH323DIR}/../pwlib"
   else
-    AC_CHECK_FILE(${HOME}/pwlib/include/ptlib.h, HAS_PWLIB=1, )
+    AC_CHECK_HEADER(${HOME}/pwlib/include/ptlib.h, HAS_PWLIB=1, )
     if test "${HAS_PWLIB:-unset}" != "unset" ; then
       PWLIBDIR="${HOME}/pwlib"
     else
-      AC_CHECK_FILE(/usr/local/include/ptlib.h, HAS_PWLIB=1, )
+      AC_CHECK_HEADER(/usr/local/include/ptlib.h, HAS_PWLIB=1, )
       if test "${HAS_PWLIB:-unset}" != "unset" ; then
         AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/local/bin)
         if test "${PTLIB_CONFIG:-unset}" = "unset" ; then
@@ -211,7 +212,7 @@ if test "${HAS_PWLIB:-unset}" = "unset" ; then
         PWLIB_LIB=`${PTLIB_CONFIG} --ldflags --libs`
         PWLIB_LIB="-L${PWLIB_LIBDIR} `echo ${PWLIB_LIB}`"
       else
-        AC_CHECK_FILE(/usr/include/ptlib.h, HAS_PWLIB=1, )
+        AC_CHECK_HEADER(/usr/include/ptlib.h, HAS_PWLIB=1, )
         if test "${HAS_PWLIB:-unset}" != "unset" ; then
           AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/share/pwlib/make)
           PWLIB_INCDIR="/usr/include"
@@ -276,6 +277,7 @@ if test "${HAS_PWLIB:-unset}" != "unset" ; then
   AC_SUBST([PWLIB_INCDIR])
   AC_SUBST([PWLIB_LIBDIR])
 fi
+  AC_LANG_POP([C++])
 ])
 
 
@@ -370,20 +372,21 @@ AC_DEFUN(
 [AST_CHECK_OPENH323], [
 OPENH323_INCDIR=
 OPENH323_LIBDIR=
+AC_LANG_PUSH([C++])
 if test "${OPENH323DIR:-unset}" != "unset" ; then
-  AC_CHECK_FILE(${OPENH323DIR}/version.h, HAS_OPENH323=1, )
+  AC_CHECK_HEADER(${OPENH323DIR}/version.h, HAS_OPENH323=1, )
 fi
 if test "${HAS_OPENH323:-unset}" = "unset" ; then
-  AC_CHECK_FILE(${PWLIBDIR}/../openh323/version.h, OPENH323DIR="${PWLIBDIR}/../openh323"; HAS_OPENH323=1, )
+  AC_CHECK_HEADER(${PWLIBDIR}/../openh323/version.h, OPENH323DIR="${PWLIBDIR}/../openh323"; HAS_OPENH323=1, )
   if test "${HAS_OPENH323:-unset}" != "unset" ; then
     OPENH323DIR="${PWLIBDIR}/../openh323"
-    AC_CHECK_FILE(${OPENH323DIR}/include/h323.h, , OPENH323_INCDIR="${PWLIB_INCDIR}/openh323"; OPENH323_LIBDIR="${PWLIB_LIBDIR}")
+    AC_CHECK_HEADER(${OPENH323DIR}/include/h323.h, , OPENH323_INCDIR="${PWLIB_INCDIR}/openh323"; OPENH323_LIBDIR="${PWLIB_LIBDIR}")
   else
-    AC_CHECK_FILE(${HOME}/openh323/include/h323.h, HAS_OPENH323=1, )
+    AC_CHECK_HEADER(${HOME}/openh323/include/h323.h, HAS_OPENH323=1, )
     if test "${HAS_OPENH323:-unset}" != "unset" ; then
       OPENH323DIR="${HOME}/openh323"
     else
-      AC_CHECK_FILE(/usr/local/include/openh323/h323.h, HAS_OPENH323=1, )
+      AC_CHECK_HEADER(/usr/local/include/openh323/h323.h, HAS_OPENH323=1, )
       if test "${HAS_OPENH323:-unset}" != "unset" ; then
         OPENH323DIR="/usr/local/share/openh323"
         OPENH323_INCDIR="/usr/local/include/openh323"
@@ -393,7 +396,7 @@ if test "${HAS_OPENH323:-unset}" = "unset" ; then
           OPENH323_LIBDIR="/usr/local/lib"
         fi
       else
-        AC_CHECK_FILE(/usr/include/openh323/h323.h, HAS_OPENH323=1, )
+        AC_CHECK_HEADER(/usr/include/openh323/h323.h, HAS_OPENH323=1, )
         if test "${HAS_OPENH323:-unset}" != "unset" ; then
           OPENH323DIR="/usr/share/openh323"
           OPENH323_INCDIR="/usr/include/openh323"
@@ -424,6 +427,7 @@ if test "${HAS_OPENH323:-unset}" != "unset" ; then
   AC_SUBST([OPENH323_INCDIR])
   AC_SUBST([OPENH323_LIBDIR])
 fi
+  AC_LANG_POP([C++])
 ])
 
 
diff --git a/configure b/configure
index 2d4b09986..991803008 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 73821 .
+# From configure.ac Revision: 73911 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61.
 #
@@ -29719,109 +29719,555 @@ if test "${USE_PWLIB}" != "no"; then
 		PWLIBDIR="${PWLIB_DIR}"
 	fi
 
+
 PWLIB_INCDIR=
 PWLIB_LIBDIR=
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
 if test "${PWLIBDIR:-unset}" != "unset" ; then
-  as_ac_File=`echo "ac_cv_file_${PWLIBDIR}/version.h" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for ${PWLIBDIR}/version.h" >&5
+  as_ac_Header=`echo "ac_cv_header_${PWLIBDIR}/version.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${PWLIBDIR}/version.h" >&5
 echo $ECHO_N "checking for ${PWLIBDIR}/version.h... $ECHO_C" >&6; }
-if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "${PWLIBDIR}/version.h"; then
-  eval "$as_ac_File=yes"
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${PWLIBDIR}/version.h usability" >&5
+echo $ECHO_N "checking ${PWLIBDIR}/version.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${PWLIBDIR}/version.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${PWLIBDIR}/version.h presence" >&5
+echo $ECHO_N "checking ${PWLIBDIR}/version.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${PWLIBDIR}/version.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
 else
-  eval "$as_ac_File=no"
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/version.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/version.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${PWLIBDIR}/version.h" >&5
+echo $ECHO_N "checking for ${PWLIBDIR}/version.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-ac_res=`eval echo '${'$as_ac_File'}'`
+ac_res=`eval echo '${'$as_ac_Header'}'`
 	       { echo "$as_me:$LINENO: result: $ac_res" >&5
 echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_File'}'` = yes; then
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   HAS_PWLIB=1
 fi
 
+
 fi
 if test "${HAS_PWLIB:-unset}" = "unset" ; then
   if test "${OPENH323DIR:-unset}" != "unset"; then
-    as_ac_File=`echo "ac_cv_file_${OPENH323DIR}/../pwlib/version.h" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for ${OPENH323DIR}/../pwlib/version.h" >&5
+    as_ac_Header=`echo "ac_cv_header_${OPENH323DIR}/../pwlib/version.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${OPENH323DIR}/../pwlib/version.h" >&5
 echo $ECHO_N "checking for ${OPENH323DIR}/../pwlib/version.h... $ECHO_C" >&6; }
-if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "${OPENH323DIR}/../pwlib/version.h"; then
-  eval "$as_ac_File=yes"
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${OPENH323DIR}/../pwlib/version.h usability" >&5
+echo $ECHO_N "checking ${OPENH323DIR}/../pwlib/version.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${OPENH323DIR}/../pwlib/version.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
 else
-  eval "$as_ac_File=no"
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
 fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${OPENH323DIR}/../pwlib/version.h presence" >&5
+echo $ECHO_N "checking ${OPENH323DIR}/../pwlib/version.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${OPENH323DIR}/../pwlib/version.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
-ac_res=`eval echo '${'$as_ac_File'}'`
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/../pwlib/version.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/../pwlib/version.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${OPENH323DIR}/../pwlib/version.h" >&5
+echo $ECHO_N "checking for ${OPENH323DIR}/../pwlib/version.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
 	       { echo "$as_me:$LINENO: result: $ac_res" >&5
 echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_File'}'` = yes; then
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   HAS_PWLIB=1
 fi
 
+
   fi
   if test "${HAS_PWLIB:-unset}" != "unset" ; then
     PWLIBDIR="${OPENH323DIR}/../pwlib"
   else
-    as_ac_File=`echo "ac_cv_file_${HOME}/pwlib/include/ptlib.h" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for ${HOME}/pwlib/include/ptlib.h" >&5
+    as_ac_Header=`echo "ac_cv_header_${HOME}/pwlib/include/ptlib.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${HOME}/pwlib/include/ptlib.h" >&5
 echo $ECHO_N "checking for ${HOME}/pwlib/include/ptlib.h... $ECHO_C" >&6; }
-if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "${HOME}/pwlib/include/ptlib.h"; then
-  eval "$as_ac_File=yes"
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${HOME}/pwlib/include/ptlib.h usability" >&5
+echo $ECHO_N "checking ${HOME}/pwlib/include/ptlib.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${HOME}/pwlib/include/ptlib.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${HOME}/pwlib/include/ptlib.h presence" >&5
+echo $ECHO_N "checking ${HOME}/pwlib/include/ptlib.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${HOME}/pwlib/include/ptlib.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
 else
-  eval "$as_ac_File=no"
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/pwlib/include/ptlib.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${HOME}/pwlib/include/ptlib.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${HOME}/pwlib/include/ptlib.h" >&5
+echo $ECHO_N "checking for ${HOME}/pwlib/include/ptlib.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-ac_res=`eval echo '${'$as_ac_File'}'`
+ac_res=`eval echo '${'$as_ac_Header'}'`
 	       { echo "$as_me:$LINENO: result: $ac_res" >&5
 echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_File'}'` = yes; then
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   HAS_PWLIB=1
 fi
 
+
     if test "${HAS_PWLIB:-unset}" != "unset" ; then
       PWLIBDIR="${HOME}/pwlib"
     else
-      { echo "$as_me:$LINENO: checking for /usr/local/include/ptlib.h" >&5
+      if test "${ac_cv_header__usr_local_include_ptlib_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for /usr/local/include/ptlib.h" >&5
 echo $ECHO_N "checking for /usr/local/include/ptlib.h... $ECHO_C" >&6; }
-if test "${ac_cv_file__usr_local_include_ptlib_h+set}" = set; then
+if test "${ac_cv_header__usr_local_include_ptlib_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_local_include_ptlib_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_local_include_ptlib_h" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "/usr/local/include/ptlib.h"; then
-  ac_cv_file__usr_local_include_ptlib_h=yes
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking /usr/local/include/ptlib.h usability" >&5
+echo $ECHO_N "checking /usr/local/include/ptlib.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include </usr/local/include/ptlib.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking /usr/local/include/ptlib.h presence" >&5
+echo $ECHO_N "checking /usr/local/include/ptlib.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include </usr/local/include/ptlib.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
 else
-  ac_cv_file__usr_local_include_ptlib_h=no
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/ptlib.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: /usr/local/include/ptlib.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for /usr/local/include/ptlib.h" >&5
+echo $ECHO_N "checking for /usr/local/include/ptlib.h... $ECHO_C" >&6; }
+if test "${ac_cv_header__usr_local_include_ptlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header__usr_local_include_ptlib_h=$ac_header_preproc
 fi
-{ echo "$as_me:$LINENO: result: $ac_cv_file__usr_local_include_ptlib_h" >&5
-echo "${ECHO_T}$ac_cv_file__usr_local_include_ptlib_h" >&6; }
-if test $ac_cv_file__usr_local_include_ptlib_h = yes; then
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_local_include_ptlib_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_local_include_ptlib_h" >&6; }
+
+fi
+if test $ac_cv_header__usr_local_include_ptlib_h = yes; then
   HAS_PWLIB=1
 fi
 
+
       if test "${HAS_PWLIB:-unset}" != "unset" ; then
         # Extract the first word of "ptlib-config", so it can be a program name with args.
 set dummy ptlib-config; ac_word=$2
@@ -29917,27 +30363,136 @@ fi
         PWLIB_LIB=`${PTLIB_CONFIG} --ldflags --libs`
         PWLIB_LIB="-L${PWLIB_LIBDIR} `echo ${PWLIB_LIB}`"
       else
-        { echo "$as_me:$LINENO: checking for /usr/include/ptlib.h" >&5
+        if test "${ac_cv_header__usr_include_ptlib_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for /usr/include/ptlib.h" >&5
 echo $ECHO_N "checking for /usr/include/ptlib.h... $ECHO_C" >&6; }
-if test "${ac_cv_file__usr_include_ptlib_h+set}" = set; then
+if test "${ac_cv_header__usr_include_ptlib_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_include_ptlib_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_include_ptlib_h" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "/usr/include/ptlib.h"; then
-  ac_cv_file__usr_include_ptlib_h=yes
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking /usr/include/ptlib.h usability" >&5
+echo $ECHO_N "checking /usr/include/ptlib.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include </usr/include/ptlib.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
 else
-  ac_cv_file__usr_include_ptlib_h=no
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
 fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking /usr/include/ptlib.h presence" >&5
+echo $ECHO_N "checking /usr/include/ptlib.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include </usr/include/ptlib.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
-{ echo "$as_me:$LINENO: result: $ac_cv_file__usr_include_ptlib_h" >&5
-echo "${ECHO_T}$ac_cv_file__usr_include_ptlib_h" >&6; }
-if test $ac_cv_file__usr_include_ptlib_h = yes; then
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/ptlib.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: /usr/include/ptlib.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for /usr/include/ptlib.h" >&5
+echo $ECHO_N "checking for /usr/include/ptlib.h... $ECHO_C" >&6; }
+if test "${ac_cv_header__usr_include_ptlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header__usr_include_ptlib_h=$ac_header_preproc
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_include_ptlib_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_include_ptlib_h" >&6; }
+
+fi
+if test $ac_cv_header__usr_include_ptlib_h = yes; then
   HAS_PWLIB=1
 fi
 
+
         if test "${HAS_PWLIB:-unset}" != "unset" ; then
           # Extract the first word of "ptlib-config", so it can be a program name with args.
 set dummy ptlib-config; ac_word=$2
@@ -30041,6 +30596,12 @@ if test "${HAS_PWLIB:-unset}" != "unset" ; then
 
 
 fi
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
 
 	if test "${HAS_PWLIB:-unset}" != "unset"; then
@@ -30266,130 +30827,685 @@ if test "${PBX_PWLIB}" = "1" -a "${USE_OPENH323}" != "no" ; then
 
 OPENH323_INCDIR=
 OPENH323_LIBDIR=
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
 if test "${OPENH323DIR:-unset}" != "unset" ; then
-  as_ac_File=`echo "ac_cv_file_${OPENH323DIR}/version.h" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for ${OPENH323DIR}/version.h" >&5
+  as_ac_Header=`echo "ac_cv_header_${OPENH323DIR}/version.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${OPENH323DIR}/version.h" >&5
 echo $ECHO_N "checking for ${OPENH323DIR}/version.h... $ECHO_C" >&6; }
-if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "${OPENH323DIR}/version.h"; then
-  eval "$as_ac_File=yes"
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${OPENH323DIR}/version.h usability" >&5
+echo $ECHO_N "checking ${OPENH323DIR}/version.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${OPENH323DIR}/version.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${OPENH323DIR}/version.h presence" >&5
+echo $ECHO_N "checking ${OPENH323DIR}/version.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${OPENH323DIR}/version.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
 else
-  eval "$as_ac_File=no"
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/version.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/version.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${OPENH323DIR}/version.h" >&5
+echo $ECHO_N "checking for ${OPENH323DIR}/version.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-ac_res=`eval echo '${'$as_ac_File'}'`
+ac_res=`eval echo '${'$as_ac_Header'}'`
 	       { echo "$as_me:$LINENO: result: $ac_res" >&5
 echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_File'}'` = yes; then
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   HAS_OPENH323=1
 fi
 
+
 fi
 if test "${HAS_OPENH323:-unset}" = "unset" ; then
-  as_ac_File=`echo "ac_cv_file_${PWLIBDIR}/../openh323/version.h" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for ${PWLIBDIR}/../openh323/version.h" >&5
+  as_ac_Header=`echo "ac_cv_header_${PWLIBDIR}/../openh323/version.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${PWLIBDIR}/../openh323/version.h" >&5
 echo $ECHO_N "checking for ${PWLIBDIR}/../openh323/version.h... $ECHO_C" >&6; }
-if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "${PWLIBDIR}/../openh323/version.h"; then
-  eval "$as_ac_File=yes"
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${PWLIBDIR}/../openh323/version.h usability" >&5
+echo $ECHO_N "checking ${PWLIBDIR}/../openh323/version.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${PWLIBDIR}/../openh323/version.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
 else
-  eval "$as_ac_File=no"
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
 fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${PWLIBDIR}/../openh323/version.h presence" >&5
+echo $ECHO_N "checking ${PWLIBDIR}/../openh323/version.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${PWLIBDIR}/../openh323/version.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
-ac_res=`eval echo '${'$as_ac_File'}'`
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${PWLIBDIR}/../openh323/version.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${PWLIBDIR}/../openh323/version.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${PWLIBDIR}/../openh323/version.h" >&5
+echo $ECHO_N "checking for ${PWLIBDIR}/../openh323/version.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
 	       { echo "$as_me:$LINENO: result: $ac_res" >&5
 echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_File'}'` = yes; then
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   OPENH323DIR="${PWLIBDIR}/../openh323"; HAS_OPENH323=1
 fi
 
+
   if test "${HAS_OPENH323:-unset}" != "unset" ; then
     OPENH323DIR="${PWLIBDIR}/../openh323"
-    as_ac_File=`echo "ac_cv_file_${OPENH323DIR}/include/h323.h" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for ${OPENH323DIR}/include/h323.h" >&5
+    as_ac_Header=`echo "ac_cv_header_${OPENH323DIR}/include/h323.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${OPENH323DIR}/include/h323.h" >&5
 echo $ECHO_N "checking for ${OPENH323DIR}/include/h323.h... $ECHO_C" >&6; }
-if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "${OPENH323DIR}/include/h323.h"; then
-  eval "$as_ac_File=yes"
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${OPENH323DIR}/include/h323.h usability" >&5
+echo $ECHO_N "checking ${OPENH323DIR}/include/h323.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${OPENH323DIR}/include/h323.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
 else
-  eval "$as_ac_File=no"
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
 fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${OPENH323DIR}/include/h323.h presence" >&5
+echo $ECHO_N "checking ${OPENH323DIR}/include/h323.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${OPENH323DIR}/include/h323.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${OPENH323DIR}/include/h323.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${OPENH323DIR}/include/h323.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${OPENH323DIR}/include/h323.h" >&5
+echo $ECHO_N "checking for ${OPENH323DIR}/include/h323.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-ac_res=`eval echo '${'$as_ac_File'}'`
+ac_res=`eval echo '${'$as_ac_Header'}'`
 	       { echo "$as_me:$LINENO: result: $ac_res" >&5
 echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_File'}'` = yes; then
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   :
 else
   OPENH323_INCDIR="${PWLIB_INCDIR}/openh323"; OPENH323_LIBDIR="${PWLIB_LIBDIR}"
 fi
 
+
   else
-    as_ac_File=`echo "ac_cv_file_${HOME}/openh323/include/h323.h" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for ${HOME}/openh323/include/h323.h" >&5
+    as_ac_Header=`echo "ac_cv_header_${HOME}/openh323/include/h323.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${HOME}/openh323/include/h323.h" >&5
 echo $ECHO_N "checking for ${HOME}/openh323/include/h323.h... $ECHO_C" >&6; }
-if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "${HOME}/openh323/include/h323.h"; then
-  eval "$as_ac_File=yes"
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${HOME}/openh323/include/h323.h usability" >&5
+echo $ECHO_N "checking ${HOME}/openh323/include/h323.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${HOME}/openh323/include/h323.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
 else
-  eval "$as_ac_File=no"
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
 fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${HOME}/openh323/include/h323.h presence" >&5
+echo $ECHO_N "checking ${HOME}/openh323/include/h323.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${HOME}/openh323/include/h323.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${HOME}/openh323/include/h323.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${HOME}/openh323/include/h323.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${HOME}/openh323/include/h323.h" >&5
+echo $ECHO_N "checking for ${HOME}/openh323/include/h323.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-ac_res=`eval echo '${'$as_ac_File'}'`
+ac_res=`eval echo '${'$as_ac_Header'}'`
 	       { echo "$as_me:$LINENO: result: $ac_res" >&5
 echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_File'}'` = yes; then
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   HAS_OPENH323=1
 fi
 
+
     if test "${HAS_OPENH323:-unset}" != "unset" ; then
       OPENH323DIR="${HOME}/openh323"
     else
-      { echo "$as_me:$LINENO: checking for /usr/local/include/openh323/h323.h" >&5
+      if test "${ac_cv_header__usr_local_include_openh323_h323_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for /usr/local/include/openh323/h323.h" >&5
 echo $ECHO_N "checking for /usr/local/include/openh323/h323.h... $ECHO_C" >&6; }
-if test "${ac_cv_file__usr_local_include_openh323_h323_h+set}" = set; then
+if test "${ac_cv_header__usr_local_include_openh323_h323_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_local_include_openh323_h323_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_local_include_openh323_h323_h" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "/usr/local/include/openh323/h323.h"; then
-  ac_cv_file__usr_local_include_openh323_h323_h=yes
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking /usr/local/include/openh323/h323.h usability" >&5
+echo $ECHO_N "checking /usr/local/include/openh323/h323.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include </usr/local/include/openh323/h323.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
 else
-  ac_cv_file__usr_local_include_openh323_h323_h=no
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
 fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking /usr/local/include/openh323/h323.h presence" >&5
+echo $ECHO_N "checking /usr/local/include/openh323/h323.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include </usr/local/include/openh323/h323.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
-{ echo "$as_me:$LINENO: result: $ac_cv_file__usr_local_include_openh323_h323_h" >&5
-echo "${ECHO_T}$ac_cv_file__usr_local_include_openh323_h323_h" >&6; }
-if test $ac_cv_file__usr_local_include_openh323_h323_h = yes; then
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/local/include/openh323/h323.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: /usr/local/include/openh323/h323.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for /usr/local/include/openh323/h323.h" >&5
+echo $ECHO_N "checking for /usr/local/include/openh323/h323.h... $ECHO_C" >&6; }
+if test "${ac_cv_header__usr_local_include_openh323_h323_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header__usr_local_include_openh323_h323_h=$ac_header_preproc
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_local_include_openh323_h323_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_local_include_openh323_h323_h" >&6; }
+
+fi
+if test $ac_cv_header__usr_local_include_openh323_h323_h = yes; then
   HAS_OPENH323=1
 fi
 
+
       if test "${HAS_OPENH323:-unset}" != "unset" ; then
         OPENH323DIR="/usr/local/share/openh323"
         OPENH323_INCDIR="/usr/local/include/openh323"
@@ -30399,27 +31515,136 @@ fi
           OPENH323_LIBDIR="/usr/local/lib"
         fi
       else
-        { echo "$as_me:$LINENO: checking for /usr/include/openh323/h323.h" >&5
+        if test "${ac_cv_header__usr_include_openh323_h323_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for /usr/include/openh323/h323.h" >&5
 echo $ECHO_N "checking for /usr/include/openh323/h323.h... $ECHO_C" >&6; }
-if test "${ac_cv_file__usr_include_openh323_h323_h+set}" = set; then
+if test "${ac_cv_header__usr_include_openh323_h323_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_include_openh323_h323_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_include_openh323_h323_h" >&6; }
 else
-  test "$cross_compiling" = yes &&
-  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
-echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
-   { (exit 1); exit 1; }; }
-if test -r "/usr/include/openh323/h323.h"; then
-  ac_cv_file__usr_include_openh323_h323_h=yes
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking /usr/include/openh323/h323.h usability" >&5
+echo $ECHO_N "checking /usr/include/openh323/h323.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include </usr/include/openh323/h323.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking /usr/include/openh323/h323.h presence" >&5
+echo $ECHO_N "checking /usr/include/openh323/h323.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include </usr/include/openh323/h323.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_cxx_preproc_warn_flag$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
 else
-  ac_cv_file__usr_include_openh323_h323_h=no
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
 fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: /usr/include/openh323/h323.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: /usr/include/openh323/h323.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for /usr/include/openh323/h323.h" >&5
+echo $ECHO_N "checking for /usr/include/openh323/h323.h... $ECHO_C" >&6; }
+if test "${ac_cv_header__usr_include_openh323_h323_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header__usr_include_openh323_h323_h=$ac_header_preproc
 fi
-{ echo "$as_me:$LINENO: result: $ac_cv_file__usr_include_openh323_h323_h" >&5
-echo "${ECHO_T}$ac_cv_file__usr_include_openh323_h323_h" >&6; }
-if test $ac_cv_file__usr_include_openh323_h323_h = yes; then
+{ echo "$as_me:$LINENO: result: $ac_cv_header__usr_include_openh323_h323_h" >&5
+echo "${ECHO_T}$ac_cv_header__usr_include_openh323_h323_h" >&6; }
+
+fi
+if test $ac_cv_header__usr_include_openh323_h323_h = yes; then
   HAS_OPENH323=1
 fi
 
+
         if test "${HAS_OPENH323:-unset}" != "unset" ; then
           OPENH323DIR="/usr/share/openh323"
           OPENH323_INCDIR="/usr/include/openh323"
@@ -30450,6 +31675,12 @@ if test "${HAS_OPENH323:-unset}" != "unset" ; then
 
 
 fi
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
 
 	if test "${HAS_OPENH323:-unset}" != "unset"; then