kbuild: add -Werror=strict-prototypes flag unconditionally

Backported from kernel
commit eeb5687a7139649e ("kbuild: add -Werror=strict-prototypes flag unconditionally")

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

diff --git a/Makefile b/Makefile
index 66803f089d48fe81e71c2eb46fe5a3017249c900..2890edbcc43f5f02d6c65bf4c8a0f5edd366250f 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -433,7 +433,7 @@ CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 
 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
 
-KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
+KBUILD_CFLAGS   := -Wall -Werror=strict-prototypes -Wno-trigraphs \
                   -Wno-format-security \
                   -fno-builtin -ffreestanding $(CSTD_FLAG)
 KBUILD_CFLAGS  += -fshort-wchar -fno-strict-aliasing