+ AC_CHECK_HEADER([log4cpp/Category.hh],,AC_MSG_ERROR([unable to find log4cpp header files]))
+ AC_CHECK_HEADER([log4cpp/PropertyConfigurator.hh],,AC_MSG_ERROR([you need at least log4cpp 0.3.x]))
+ AC_TRY_LINK(
+ [#include <log4cpp/Category.hh>],
+ [log4cpp::Category::getInstance("foo")],
+ [AC_DEFINE(OPENSAML_LOG4CPP,1,[Define if log4cpp library is used.])],
+ [AC_MSG_ERROR([unable to link with log4cpp])])