ignore checks for /proc when cross-compiling

(as suggested by Andy Kennedy)

configure.ac

@@ -100,10 +100,10 @@ if test ! -z "$missing_headers"; then
   AC_MSG_ERROR([missing headers: $missing_headers])
 fi
 
-
-
+if test "$cross_compiling" = "no"; then
 AC_CHECK_FILE($PROCDIR/stat,,AC_MSG_ERROR(Cannot find /proc/stat. Make sure you have a Linux-compatible /proc filesystem mounted. See the file README for help.))
 AC_CHECK_FILE($PROCDIR/meminfo,,AC_MSG_ERROR(Cannot find /proc/meminfo. Make sure you have a Linux-compatible /proc filesystem mounted. See the file README for help.))
+fi
 
 AC_ARG_ENABLE(plpa, [AC_HELP_STRING([--enable-plpa], [enable PLPA support for CPU affinity])], ,enable_plpa="yes")
 PLPA_INCLUDED