+echo $ac_n "checking whether the compiler supports const_cast<>""... $ac_c" 1>&6
+echo "configure:11441: checking whether the compiler supports const_cast<>" >&5
+if eval "test \"`echo '$''{'ac_cv_cxx_const_cast'+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
+
+ cat > conftest.$ac_ext <<EOF
+#line 11454 "configure"
+#include "confdefs.h"
+
+int main() {
+int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;
+; return 0; }
+EOF
+if { (eval echo configure:11461: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+ rm -rf conftest*
+ ac_cv_cxx_const_cast=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ac_cv_cxx_const_cast=no
+fi
+rm -f conftest*
+ 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
+
+
+fi
+
+echo "$ac_t""$ac_cv_cxx_const_cast" 1>&6
+if test "$ac_cv_cxx_const_cast" = yes; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_CONST_CAST
+EOF
+
+fi
+
+