dnl ** check if it is safe to include both <time.h> and <sys/time.h>
AC_HEADER_TIME
-dnl ** check for POSIX regex
-HavePosixRegex=NO
-AC_CHECK_HEADERS([regex.h], [AC_CHECK_FUNCS(regcomp, [HavePosixRegex=YES])])
-AC_SUBST(HavePosixRegex)
-
dnl ** how do we get a timezone name, and UTC offset ?
AC_STRUCT_TIMEZONE