- Detect missing size_t and typedef it.
diff --git a/ChangeLog b/ChangeLog
index 2947cc7..e9f03e2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -8,6 +8,7 @@
    Nalin Dahyabhai <nalin@thermo.stat.ncsu.edu>
  - Calls to pam_setcred, patch from Nalin Dahyabhai 
    <nalin@thermo.stat.ncsu.edu>
+ - Detect missing size_t and typedef it.
 
 19991228
  - Replacement for getpagesize() for systems which lack it
diff --git a/acconfig.h b/acconfig.h
index c64eb72..3b37c59 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -113,6 +113,7 @@
 #undef HAVE_U_INTXX_T
 #undef HAVE_UINTXX_T
 #undef HAVE_SOCKLEN_T
+#undef HAVE_SIZE_T
 
 /* Define if you have /dev/ptmx */
 #undef HAVE_DEV_PTMX
diff --git a/configure.in b/configure.in
index 581380a..3b1f125 100644
--- a/configure.in
+++ b/configure.in
@@ -192,6 +192,18 @@
 	[AC_MSG_RESULT(no)]
 )
 
+AC_MSG_CHECKING([For size_t])
+AC_TRY_COMPILE(
+	[#include <sys/types.h>],
+	[#include <sys/socket.h>],
+	[size_t foo; foo = 1235;],
+	[
+		AC_DEFINE(HAVE_SIZE_T)
+		AC_MSG_RESULT(yes)
+	],
+	[AC_MSG_RESULT(no)]
+)
+
 AC_ARG_WITH(pam,
 	[  --without-pam           Disable PAM support ],
 	[
diff --git a/defines.h b/defines.h
index 1437e7b..1a66399 100644
--- a/defines.h
+++ b/defines.h
@@ -106,6 +106,10 @@
 typedef unsigned int socklen_t;
 #endif /* HAVE_SOCKLEN_T */
 
+#ifndef HAVE_SIZE_T
+typedef unsigned int size_t;
+#endif /* HAVE_SIZE_T */
+
 /* Paths */
 
 /* If _PATH_LASTLOG is not defined by system headers, set it to the */