gcov: shut up missing prototype warnings for internal stubs

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/[email protected]/ Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Arnd Bergmann <[email protected]> Tested-by: Peter Oberparleiter <[email protected]> Acked-by: Peter Oberparleiter <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
wafgo · Aug 18, 2023 · 29665c1 · 29665c1
1 parent a53fb69
commit 29665c1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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