diff --git a/0BUILD b/0BUILD
index 9f8f451..1cfc5b0 100644
--- a/0BUILD
+++ b/0BUILD
@@ -74,7 +74,13 @@
       <choices>TRUE FALSE</choices>
     </option>
     <ifVarMatches name="option_debug" value="TRUE" >
-      <setVar name="CFLAGS">-ggdb -Wall -Og</setVar>
+      <setVar name="CFLAGS">
+        -ggdb -Wall -Og -W
+         -Wbad-function-cast  -Wmissing-parameter-type
+         -Wnested-externs -Wstringop-overflow=2
+         -Wdeclaration-after-statement -Wpointer-sign
+         -Wunused-parameter
+      </setVar>
       <setVar name="CXXFLAGS">-ggdb -Wall -Og</setVar>
     </ifVarMatches>