[U-Boot] Problem: the build does not recurse into subdirectory

[Simon Glass]

Hi Maxim,

On 16 December 2016 at 17:18, Maxim Sloyko <maxims at google.com> wrote:
> Greetings,
>
> I'm working on adding new platform to U-Boot and right now I'm trying
> to clean up the directory structure, but running into a problem of
> Make not recursing into a subdirectory that I've created.
>
> in my arch/arm/mach-aspeed/Makefile I have this:
>
> obj-$(CONFIG_ASPEED_AST2500) += ast2500/ ast2500-board.o
>
> and then in arch/arm/mach-aspeed/ast2500/Makefile:
>
> $obj-y += clk_ast2500.o sdram_ast2500.o

What is the $ for? I don't think you want that.

>
> When I try to build everything, I get this error:
>
> arm-linux-gnueabi-ld.bfd: cannot find
> arch/arm/mach-aspeed/ast2500/built-in.o: No such file or directory
>
> If instead in arch/arm/mach-aspeed/Makefile I specify:
>
> obj-$(CONFIG_ASPEED_AST2500) += ast2500/clk_ast2500.o
> ast2500/sdram_ast2500.o ast2500-board.o
>
> (That is, I just added binaries from the lower level dir explicitly)
>
> everything builds fine, which means that CONFIG_ASPEED_AST2500 is defined.
>
> Any ideas what might be the problem here?
>
> If you need more details, you can see the code here
> https://github.com/maksymko/u-boot/tree/aspeed_ast2500_evb/arch/arm/mach-aspeed
>
> Many thanks for the help!
>
> --
> Maxim Sloyko

Regards,
Simon