Handle --disable-malloc-guards. Check for intptr_t, intmax_t and

size_t.

src/libraries/libisc-new/configure.in

@@ -19,7 +19,7 @@ dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 dnl Process this file with autoconf to produce a configure script.
 
-AC_REVISION($Revision: 1.22 $)dnl
+AC_REVISION($Revision: 1.23 $)dnl
 AC_PREREQ(2.56)
 AC_INIT([isc],[1.01])
 AC_CONFIG_SRCDIR([src/isc_master.c])
@@ -47,6 +47,18 @@ AC_ARG_ENABLE([ipv6],
         [use_inet6=yes],
         [use_inet6=no])
 
+AC_ARG_ENABLE([malloc-guards],
+	AC_HELP_STRING([--disable-malloc-guards], 
+	               [disable defensive guard areas (may crash lyskomd)]),
+	[use_malloc_guards=$enableval],
+	[use_malloc_guards=yes])
+
+[if test "$use_malloc_guards" = "yes"
+then]
+	AC_DEFINE([USE_MALLOC_GUARDS], 1, 
+		  [Insert magic number before and after malloced areas.
+		   This can help detect buffer overruns.])
+[fi]
 
 dnl Checks for programs.
 
@@ -114,6 +126,10 @@ then]
     AC_CHECK_SIZEOF(long)
 [fi]
 
+AC_CHECK_TYPE(intptr_t)
+AC_CHECK_TYPE(intmax_t)
+AC_CHECK_TYPE(size_t)
+
 CMOD_C_WORKING_ATTRIBUTE_UNUSED
 
 [if test -n "$GCC"; then]