diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index a1168252f4..ee7ac547f6 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,8 @@
+2011-02-25	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* aclocal/check-networking.m4, aclocal/check-posix.m4:
+	Rebase check on "$host".
+
 2011-02-25	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* libcsupport/src/creat.c: Remove.
diff --git a/cpukit/aclocal/check-networking.m4 b/cpukit/aclocal/check-networking.m4
index 82fc237076..1b8fe38fd9 100644
--- a/cpukit/aclocal/check-networking.m4
+++ b/cpukit/aclocal/check-networking.m4
@@ -8,8 +8,8 @@ AC_REQUIRE([RTEMS_ENABLE_NETWORKING])dnl
 AC_CACHE_CHECK([whether CPU supports networking],
   rtems_cv_HAS_NETWORKING,
   [dnl
-    case "$RTEMS_CPU" in
-    *)
+    case "$host" in
+    *-*-rtems*)
       AS_IF([test "${RTEMS_HAS_NETWORKING}" = "yes"],[
 # suppress libnetworking if one these types is not available
         AS_IF([test x"$ac_cv_type_int8_t" = xyes \
diff --git a/cpukit/aclocal/check-posix.m4 b/cpukit/aclocal/check-posix.m4
index 7cf600d92d..a00dc2456b 100644
--- a/cpukit/aclocal/check-posix.m4
+++ b/cpukit/aclocal/check-posix.m4
@@ -8,8 +8,8 @@ AC_REQUIRE([RTEMS_ENABLE_POSIX])dnl
 AC_CACHE_CHECK([whether CPU supports libposix],
   rtems_cv_HAS_POSIX_API,
   [dnl
-    case "$RTEMS_CPU" in
-    *)
+    case "$host" in
+    *-*-rtems*)
       if test "${RTEMS_HAS_POSIX_API}" = "yes"; then
         rtems_cv_HAS_POSIX_API="yes";
       else