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-rw-r--r--Makeconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makeconfig b/Makeconfig
index 1dc522c7ed..f3668c616a 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -752,7 +752,7 @@ endif
 ifeq ($(enable-werror),yes)
 +gccwarn += -Werror
 endif
-+gccwarn-c = -Wstrict-prototypes
++gccwarn-c = -Wstrict-prototypes -Wold-style-definition
 
 # We do not depend on the address of constants in different files to be
 # actually different, so allow the compiler to merge them all.