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-rw-r--r--Makefile.inc1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile.inc b/Makefile.inc
index 44cd0eaeb6..23f56a4d73 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -498,6 +498,7 @@ CFLAGS_common += -Wdangling-else -Wmissing-include-dirs
CFLAGS_common += -fno-common -ffreestanding -fno-builtin -fomit-frame-pointer
CFLAGS_common += -fstrict-aliasing -ffunction-sections -fdata-sections -fno-pie
ifeq ($(CONFIG_COMPILER_GCC),y)
+CFLAGS_common += -Wold-style-declaration
# Don't add these GCC specific flags when running scan-build
ifeq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
CFLAGS_common += -Wno-packed-not-aligned