AC_DEFUN([_AI_ORB_BUILDTEST],
    [

        AC_ARG_ENABLE(
            [orb-buildtest],
            AS_HELP_STRING(--enable-orb-buildtest,try to build a test ORB program [[[no]]]),
            [
                USE_ORB_BUILDTEST="${enableval}"
            ],
            [
                USE_ORB_BUILDTEST="no"
            ])


        orbBuildTest()
        {
            AC_MSG_CHECKING([whether a test program can be built against the detected ORB])
        
        
            cat > conftest.idl <<EOF

module AutotoolsIDL
{
    interface Simple
    {
        string echo(in string str);
    };
};

EOF


            cat > conftest_i.cpp <<EOF
        
#if defined(HAVE_ORBACUS)
	#include <OB/CORBA.h>
#endif

#include "conftestServer.hpp"


class Simple_i :
        public POA_AutotoolsIDL::Simple
{
public:
	char *echo(const char *str)
		throw (CORBA::SystemException);
};

char *Simple_i::echo(const char *str)
	throw (CORBA::SystemException)
{
	return CORBA::string_dup(str);
}


int main(int argc, char **argv)
{
	try
	{
		CORBA::ORB_var orb = CORBA::ORB_init(argc, argv);
		PortableServer::POA_var poa = PortableServer::POA::_narrow(orb->resolve_initial_references("RootPOA"));
		
		Simple_i *simple_i = new Simple_i();
		PortableServer::ObjectId_var simpleObjId = poa->activate_object(simple_i);

		PortableServer::POAManager_var pman = poa->the_POAManager();
		pman->activate();

		AutotoolsIDL::Simple_var simple = simple_i->_this();

		orb->run();
		orb->destroy();
	}
	catch (...)
	{
	    return 1;
	}
	return 0;
}
        
EOF

            # The double $ is required by make, but not when running the command directly with sh.
            IDLC_FIXED=`echo ${IDLC} | sed 's/[[$][$]]/$/g'`
            if \
                echo "${IDLC_FIXED} ${ORB_DEFINES} ${IDLCPPFLAGS} ${IDLCXXFLAGS} conftest.idl" 1>&5 2>&1 && \
                ${SHELL} -c "${IDLC_FIXED} ${ORB_DEFINES} ${IDLCPPFLAGS} ${IDLCXXFLAGS} conftest.idl" 1>&5 2>&1 && \
                echo "ORB_TYPE=${ORB_TYPE} \"${ac_aux_dir}/idlfix\" conftest" 1>&5 2>&1 && \
                ${SHELL} -c "ORB_TYPE=${ORB_TYPE} \"${ac_aux_dir}/idlfix\" conftest" 1>&5 2>&1 && \
                echo "${CXX} ${ORB_DEFINES} -I. ${INCLUDES} ${ORB_CPPFLAGS} ${CPPFLAGS} ${ORB_CXXFLAGS} ${CXXFLAGS} -c -o conftestServer.o conftestServer.cpp" 1>&5 2>&1 && \
                ${SHELL} -c "${CXX} ${ORB_DEFINES} -I. ${INCLUDES} ${ORB_CPPFLAGS} ${CPPFLAGS} ${ORB_CXXFLAGS} ${CXXFLAGS} -c -o conftestServer.o conftestServer.cpp" 1>&5 2>&1 && \
                echo "${CXX} ${ORB_DEFINES} -I. ${INCLUDES} ${ORB_CPPFLAGS} ${CPPFLAGS} ${ORB_CXXFLAGS} ${CXXFLAGS} -c -o conftest_i.o conftest_i.cpp" 1>&5 2>&1 && \
                ${SHELL} -c "${CXX} ${ORB_DEFINES} -I. ${INCLUDES} ${ORB_CPPFLAGS} ${CPPFLAGS} ${ORB_CXXFLAGS} ${CXXFLAGS} -c -o conftest_i.o conftest_i.cpp" 1>&5 2>&1 && \
                echo "${CXX} ${ORB_CXXFLAGS} ${CXXFLAGS} ${ORB_LDFLAGS} ${LDFLAGS} -o conftest conftest_i.o conftestServer.o ${ORB_LIBS} ${LIBS}" 1>&5 2>&1 && \
                ${SHELL} -c "${CXX} ${ORB_CXXFLAGS} ${CXXFLAGS} ${ORB_LDFLAGS} ${LDFLAGS} -o conftest conftest_i.o conftestServer.o ${ORB_LIBS} ${LIBS}" 1>&5 2>&1
            then
                ORB_BUILDTEST="yes"
                AC_MSG_RESULT([yes])
            else
                ORB_BUILDTEST="no"
                AC_MSG_RESULT([no])
                echo failed conftest.idl was: 1>&5
                cat conftest.idl 1>&5
                echo failed conftest_i.cpp was: 1>&5
                cat conftest_i.cpp 1>&5
            fi
            
            rm -f conftest*
        }
        
        if test "x${USE_ORB_BUILDTEST}" = "xyes"
        then
            orbBuildTest
        else
            ORB_BUILDTEST="yes"
        fi
    ])