Makefile: Build with -Werror=date-time if the compiler supports it
GCC 4.9 and newer have a new warning -Wdate-time, which warns on any use of __DATE__, __TIME__, or __TIMESTAMP__, which would make the build non-deterministic. Now that the kernel does not use any of those macros, turn on -Werror=date-time if available, to keep it that way. The kernel already (optionally) records this information at build time in a single place; other kernel code should not duplicate that. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
parent
f9d7f7778c
commit
fe7c36c7bd
3
Makefile
3
Makefile
|
@ -682,6 +682,9 @@ KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
|
|||
# require functions to have arguments in prototypes, not empty 'int foo()'
|
||||
KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
|
||||
|
||||
# Prohibit date/time macros, which would make the build non-deterministic
|
||||
KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
|
||||
|
||||
# use the deterministic mode of AR if available
|
||||
KBUILD_ARFLAGS := $(call ar-option,D)
|
||||
|
||||
|
|
Loading…
Reference in a new issue