Makefile: Build with -Werror=date-time if the compiler supports it

[mirror_ubuntu-bionic-kernel.git] / Makefile

diff --git a/Makefile b/Makefile
index 455fd484b20edb92a0c916c1be3cc7adffc6cfa4..731e3ce5b9ab5cd985372887def92fd120a175af 100644 (file)
--- a/Makefile
+++ b/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)