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H A D | Makefile | 65bb6d8deebf608ac2bd6c3eb60ad81cf5d30f60 Fri Apr 18 05:09:51 CDT 2014 Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: build with -Werror=date-time if the compiler supports it
Using __DATE__, __TIME__ would make the build non-deterministic.
If the code needs to refer to build date/time, use U_BOOT_DATE and U_BOOT_TIME in include/generated/timestamp_autogenerated.h instead.
This commit has been imported from Linux Kernel, which should be applied to U-Boot too:
commit fe7c36c7bde12190341722af69358e42171162f3 Author: Josh Triplett <josh@joshtriplett.org> Date: Mon Dec 23 13:56:06 2013 -0800
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> Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
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