Quote from https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#Warning-Options -Wframe-address Warn when the ‘__builtin_frame_address’ or ‘__builtin_return_address’ is called with an argument greater than 0. Such calls may return indeterminate values or crash the program. The warning is included in -Wall. Is being inforced in GCC 6.1.x at least on POWERPC. Removing -Werror (or -Wall) is unwise and since the stacktrace code uses __builtin_return_address with a non zero argument for exactly the intentended purpose, -Wno-frame-address is the correct solution. Signed-off-by: Cyril Bur <cyrilbur@xxxxxxxxx> --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index bed6ed3..0ffe234 100644 --- a/Makefile +++ b/Makefile @@ -45,7 +45,7 @@ cc-option = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null \ > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) CFLAGS += -g -CFLAGS += $(autodepend-flags) -Wall -Werror +CFLAGS += $(autodepend-flags) -Wall -Werror -Wno-frame-address frame-pointer-flag=-f$(if $(KEEP_FRAME_POINTER),no-,)omit-frame-pointer fomit_frame_pointer := $(call cc-option, $(frame-pointer-flag), "") fnostack_protector := $(call cc-option, -fno-stack-protector, "") -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
