diff --git a/site_scons/cc.scons b/site_scons/cc.scons
index c923b3872..69e91a44e 100644
--- a/site_scons/cc.scons
+++ b/site_scons/cc.scons
@@ -21,9 +21,11 @@ ENV.AppendUnique(
         # "-MMD",
         # "-MP",
         "-Wall",
-        "-Wextra",
-        "-Werror",
+        # "-Wextra",
+        # "-Werror",
         "-Wno-address-of-packed-member",
+        "-Wimplicit-function-declaration",
+        "-Wbuiltin-declaration-mismatch",
         "-Wredundant-decls",
         "-Wdouble-promotion",
         "-fdata-sections",
@@ -32,6 +34,9 @@ ENV.AppendUnique(
         "-fno-math-errno",
         "-fstack-usage",
         "-g",
+        "-Wno-unused-parameter",
+        "-Wno-type-limits",
+        "-Wno-unused-variable",
         # "-Wno-stringop-overread",
         # "-Wno-stringop-overflow",
     ],