Add a naive test for Xerces. This is unnecessary (and harmless) on the

trunk, but useful on the assign-dev branch for deciding whether to
include XML support in assign.

configure

@@ -2280,6 +2280,102 @@ else
 fi
 
 
+#
+# Check for Xerces (required for XML support in assign).
+#
+
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+
+echo $ac_n "checking how to run the C++ preprocessor""... $ac_c" 1>&6
+echo "configure:2296: checking how to run the C++ preprocessor" >&5
+if test -z "$CXXCPP"; then
+if eval "test \"`echo '$''{'ac_cv_prog_CXXCPP'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+  CXXCPP="${CXX-g++} -E"
+  cat > conftest.$ac_ext <<EOF
+#line 2309 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:2314: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CXXCPP=/lib/cpp
+fi
+rm -f conftest*
+  ac_cv_prog_CXXCPP="$CXXCPP"
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+fi
+fi
+CXXCPP="$ac_cv_prog_CXXCPP"
+echo "$ac_t""$CXXCPP" 1>&6
+
+ac_safe=`echo "xercesc/dom/DOM.hpp" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for xercesc/dom/DOM.hpp""... $ac_c" 1>&6
+echo "configure:2340: checking for xercesc/dom/DOM.hpp" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2345 "configure"
+#include "confdefs.h"
+#include <xercesc/dom/DOM.hpp>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:2350: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  HAVE_XERCES=yes
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+
+
 #
 # Testing mode.  In testing mode scripts should not effect hardware state.
 # This is designed to be used with the testsuite software which operates
@@ -2314,7 +2410,7 @@ fi
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:2318: checking for a BSD compatible install" >&5
+echo "configure:2414: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2375,7 +2471,7 @@ esac
 # Extract the first word of "rsync", so it can be a program name with args.
 set dummy rsync; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2379: checking for $ac_word" >&5
+echo "configure:2475: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_RSYNC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2934,6 +3030,8 @@ s%@EVENTSYS@%$EVENTSYS%g
 s%@HAVE_ULXMLRPCPP@%$HAVE_ULXMLRPCPP%g
 s%@GTK_CONFIG@%$GTK_CONFIG%g
 s%@HAVE_MEZZANINE@%$HAVE_MEZZANINE%g
+s%@CXXCPP@%$CXXCPP%g
+s%@HAVE_XERCES@%$HAVE_XERCES%g
 s%@TESTMODE@%$TESTMODE%g
 s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g
 s%@INSTALL_SCRIPT@%$INSTALL_SCRIPT%g

configure.in

@@ -750,6 +750,15 @@ else
 fi
 AC_SUBST(HAVE_MEZZANINE)
 
+#
+# Check for Xerces (required for XML support in assign).
+#
+AC_LANG_SAVE
+AC_LANG_CPLUSPLUS
+AC_CHECK_HEADER([xercesc/dom/DOM.hpp],[HAVE_XERCES=yes])
+AC_LANG_RESTORE
+AC_SUBST(HAVE_XERCES)
+
 #
 # Testing mode.  In testing mode scripts should not effect hardware state.
 # This is designed to be used with the testsuite software which operates