diff --git a/samples/avr/crosstool.config b/samples/avr/crosstool.config
index 51f453eb..8324dcba 100644
--- a/samples/avr/crosstool.config
+++ b/samples/avr/crosstool.config
@@ -1,5 +1,8 @@
+CT_LOCAL_TARBALLS_DIR="${HOME}/src"
+CT_SAVE_TARBALLS=y
+CT_LOG_EXTRA=y
 CT_ARCH_avr=y
 CT_CC_GCC_V_4_9_2=y
 CT_CC_LANG_CXX=y
 CT_DEBUG_gdb=y
-CT_ISL_V_0_12_2=y
+CT_CLOOG_V_0_18_1=y