AC_DEFINE_UNQUOTED([HAVE_IEEEFP_H], [$HAVE_IEEEFP_H], [ieeefp.h header])
dnl
-dnl Check for platform-specific printing functions
+dnl Check for platform-specific functions
dnl
AC_CHECK_FUNC(vasprintf, [HAVE_VASPRINTF=1], [HAVE_VASPRINTF=0])
+AC_DEFINE([HAVE_VASPRINTF])
AC_CHECK_FUNC(asprintf, [HAVE_ASPRINTF=1], [HAVE_ASPRINTF=0])
-AC_SUBST([HAVE_VASPRINTF])
-AC_SUBST([HAVE_ASPRINTF])
+AC_DEFINE([HAVE_ASPRINTF])
+AC_FUNC_FSEEKO()
dnl
dnl MingW requires use of pwd -W to give proper Windows (not MingW) paths