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Message-Id: <20230725123042.2269077-1-arnd@kernel.org> Date: Tue, 25 Jul 2023 14:23:38 +0200 From: Arnd Bergmann <arnd@...nel.org> To: Peter Oberparleiter <oberpar@...ux.ibm.com> Cc: Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org Subject: [PATCH] [v2] gcov: shut up missing prototype warnings for internal stubs From: Arnd Bergmann <arnd@...db.de> gcov uses global functions that are called from generated code, but these have no prototype in a header, which causes a W=1 build warning: kernel/gcov/gcc_base.c:12:6: error: no previous prototype for '__gcov_init' [-Werror=missing-prototypes] kernel/gcov/gcc_base.c:40:6: error: no previous prototype for '__gcov_flush' [-Werror=missing-prototypes] kernel/gcov/gcc_base.c:46:6: error: no previous prototype for '__gcov_merge_add' [-Werror=missing-prototypes] kernel/gcov/gcc_base.c:52:6: error: no previous prototype for '__gcov_merge_single' [-Werror=missing-prototypes] Just turn off these warnings unconditionally for the two files that contain them. Link: https://lore.kernel.org/all/0820010f-e9dc-779d-7924-49c7df446bce@linux.ibm.com/ Signed-off-by: Arnd Bergmann <arnd@...db.de> --- kernel/gcov/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/gcov/Makefile b/kernel/gcov/Makefile index 16f8ecc7d8821..ccd02afaeffb4 100644 --- a/kernel/gcov/Makefile +++ b/kernel/gcov/Makefile @@ -3,4 +3,6 @@ ccflags-y := -DSRCTREE='"$(srctree)"' -DOBJTREE='"$(objtree)"' obj-y := base.o fs.o obj-$(CONFIG_CC_IS_GCC) += gcc_base.o gcc_4_7.o +CFLAGS_gcc_base.o += -Wno-missing-prototypes -Wno-missing-declarations obj-$(CONFIG_CC_IS_CLANG) += clang.o +CFLAGS_clang.o += -Wno-missing-prototypes -Wno-missing-declarations -- 2.39.2
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