On Mon, Aug 02, 2021 at 03:18:27PM +0200, Pali Rohár wrote:

> Including timestamp.h (either directly or transitionally) cause build
> system to recompile binaries at every 'make' run. This has disadvantage
> in U-Boot development as for every small change 'make' recompiles lot of
> other irrelevant files which were not touched / changed.
> 
> This patch series eliminate transitional / indirect usage of
> timestamp.h by removing unneeded inclusion of header files, moving
> timestamp values from macros to global variables, etc...
> 
> After these patches, U-Boot tools are not recompiled by every 'make' run,
> which decrease time for incremental U-Boot recompilation.
> 
> Please test these patches, specially m68k and powerpc parts as I do not
> have any of these boards.
> 
> Patch series depend on this patch (now marked as accepted):
> http://patchwork.ozlabs.org/project/uboot/patch/20210710111001.32325-1-pali@kernel.org/
> 
> Pali Rohár (11):
>   Remove #include <timestamp.h> from files which do not need it
>   Remove #include <version.h> from files which do not need it
>   efi_loader: Use directly version_string variable
>   version: Move version_string[] from version.h to version_string.h
>   m68k: mcf: Remove overloading version_string
>   version: Put version_string[] variable into section
>     .text_version_string
>   powerpc: mpc: Put U-Boot version string at correct place by linker
>     script
>   version: Do not make version_string[] variable as a weak
>   x86: quark: MRC: Remove U_BOOT_DATE and U_BOOT_TIME from debug log
>   version: Remove global macro U_BOOT_VERSION_STRING from version.h
>   Remove including timestamp.h in version.h

So, looking at https://source.denx.de/u-boot/u-boot/-/pipelines/8948
this fails to build for at least qemu-ppce500 and xtfpga.  Over in 
doc/develop/ci_testing.rst we document how to run a world build.  Please
fix these build errors and re-submit, thanks.

-- 
Tom