diff --git a/configure.in b/configure.in
index 5e4b87aee7..5fe3ba098f 100644
--- a/configure.in
+++ b/configure.in
@@ -18,7 +18,7 @@ AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
 esyscmd([sed "s/^/# /" COPYRIGHT])dnl
 AC_DIVERT_POP()dnl
 
-AC_REVISION($Revision: 1.218 $)
+AC_REVISION($Revision: 1.219 $)
 
 AC_INIT(lib/dns/name.c)
 AC_PREREQ(2.13)
@@ -1174,7 +1174,35 @@ AC_TRY_COMPILE([
 	[AC_MSG_RESULT(yes)
          AC_DEFINE(HAVE_RLIM_T)],
         [AC_MSG_RESULT(no)])
-
+AC_MSG_CHECKING(sizeof rlim_cur)
+AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+main() { struct rlimit r; exit(!(sizeof(r.rlim_cur) == sizeof(int)));}],
+[AC_MSG_RESULT(int)
+ISC_PLATFORM_RLIMITTYPE="#define ISC_PLATFORM_RLIMITTYPE int"],
+[
+AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+main() { struct rlimit r; exit(!(sizeof(r.rlim_cur) == sizeof(long int)));}],
+[AC_MSG_RESULT(long int)
+ISC_PLATFORM_RLIMITTYPE="#define ISC_PLATFORM_RLIMITTYPE long int"],
+[
+AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+main() { struct rlimit r; exit((!sizeof(r.rlim_cur) == sizeof(long long int)));}],
+[AC_MSG_RESULT(long long int)
+ISC_PLATFORM_RLIMITTYPE="#define ISC_PLATFORM_RLIMITTYPE long long int"],
+[AC_MSG_ERROR([unable to determine sizeof rlim_cur])
+],[])
+],[])
+],[])
+AC_SUBST(ISC_PLATFORM_RLIMITTYPE)
 #
 # Random remaining OS-specific issues involving compiler warnings.
 # XXXDCL print messages to indicate some compensation is being done?