diff --git a/ChangeLog b/ChangeLog
index 60a63bbe8c..43ea74caa1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sat Apr 27 20:19:21 2013  Tanaka Akira  <akr@fsij.org>
+
+	* thread_pthread.c (ruby_init_stack): Add STACK_GROW_DIR_DETECTION.
+	  This fixes a compilation failure while cross-compiling for Tensilica
+	  Xtensa Processor.
+
 Sat Apr 27 19:32:44 2013  Benoit Daloze  <eregontp@gmail.com>
 
 	* thread.c: fix typos and documentation
diff --git a/thread_pthread.c b/thread_pthread.c
index cae9006337..eb98024d2b 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -654,6 +654,7 @@ ruby_init_stack(volatile VALUE *addr
 #elif defined(HAVE_GETRLIMIT)
 	int pagesize = getpagesize();
 	struct rlimit rlim;
+        STACK_GROW_DIR_DETECTION;
 	if (getrlimit(RLIMIT_STACK, &rlim) == 0) {
 	    size = (size_t)rlim.rlim_cur;
 	}