dnl Arguments:
dnl   $1     --    Library to look for
dnl   $2     --    Function to check in the library
dnl   $3     --    Any additional libraries that might be needed
dnl   $4     --    Action to be taken when test succeeds
dnl   $5     --    Action to be taken when test fails
dnl   $6     --    Directories where the library may reside
AC_DEFUN([MU_CHECK_LIB],
[
  save_LIBS=$LIBS
  AC_CACHE_CHECK([for -l$1], mu_cv_lib_$1,
  [
   for path in $6
   do
      LIBS="$save_LIBS $3 -L$path -l$1"
      AC_TRY_LINK_FUNC($2,
                   [mu_cv_lib_$1="$3 -L$path -l$1"
                    break],
                   [mu_cv_lib_$1=no],$3)
   done
  ])
  MU_RESULT_ACTIONS([mu_cv_lib_$1],[LIB$1],[$4],[$5])
  LIBS=$save_LIBS
])