AC_MSG_ERROR(Unable to locate your libmcal header files - mcal.h should be in the directory you specify or in the include/ subdirectory below it - default search location is $MCAL_DEFAULT_SEARCH)
AC_MSG_ERROR(Unable to locate your libmcal header files - cal_misc.h should be in the directory you specify or in the include/ subdirectory below it - default search location is $MCAL_DEFAULT_SEARCH)
fi
if test ! -f "$MCAL_INCLUDE/icalroutines.h"; then
AC_MSG_ERROR(Unable to locate your libmcal header files - icalroutines.h should be in the directory you specify or in the include/ subdirectory below it - default search location is $MCAL_DEFAULT_SEARCH)
AC_MSG_ERROR(Unable to locate your libmcal library files - libmcal.a should be in the directory you specify or in the lib/ subdirectory below it - default search location is $MCAL_DEFAULT_SEARCH)