diff --git a/config/functions b/config/functions
index 319275e76f..6923723602 100644
--- a/config/functions
+++ b/config/functions
@@ -4,6 +4,10 @@ setup_toolchain() {
     TARGET_CFLAGS+=" $CFLAGS_OPTIM_LTO"
     TARGET_CXXFLAGS+=" $CXXFLAGS_OPTIM_LTO"
     TARGET_LDFLAGS+=" $LDFLAGS_OPTIM_LTO"
+  else
+    TARGET_CFLAGS+=" -fno-lto"
+    TARGET_CXXFLAGS+=" -fno-lto"
+    TARGET_LDFLAGS+=" -fno-lto"
   fi
 
   # gold flag