AC_DEFINE(HAVE_BOOST_DATE_TIME,,[define if the Boost::Date_Time library is available])
BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
if test "x$ax_boost_user_date_time_lib" = "x"; then
for libextension in `ls $BOOSTLIBDIR/libboost_date_time*.so* $BOOSTLIBDIR/libboost_date_time*.dylib* $BOOSTLIBDIR/libboost_date_time*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_date_time.*\)\.so.*$;\1;' -e 's;^lib\(boost_date_time.*\)\.dylib.*$;\1;' -e 's;^lib\(boost_date_time.*\)\.a*$;\1;'` ; do
for libextension in `ls $BOOSTLIBDIR/boost_date_time*.dll* $BOOSTLIBDIR/boost_date_time*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_date_time.*\)\.dll.*$;\1;' -e 's;^\(boost_date_time.*\)\.a.*$;\1;'` ; do