[U-Boot] standalone-examples: support custom GCC lib

[Tom Rini]

On Tue, Jul 16, 2013 at 02:44:23PM +0100, Jack Mitchell wrote:

> From: Jack Mitchell <jack.mitchell at dbbroadcast.co.uk>
> 
> Add support for defining the gcc lib in standalone examples as is
> done in the main u-boot Makefile
> 
> Signed-off-by: Jack Mitchell <jack.mitchell at dbbroadcast.co.uk>
> 
> ---
> examples/standalone/Makefile | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/examples/standalone/Makefile b/examples/standalone/Makefile
> index baaa2fb..b1be527 100644
> --- a/examples/standalone/Makefile
> +++ b/examples/standalone/Makefile
> @@ -68,7 +68,18 @@ ELF	:= $(addprefix $(obj),$(ELF))
>  BIN	:= $(addprefix $(obj),$(BIN))
>  SREC	:= $(addprefix $(obj),$(SREC))
>  
> -gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`)
> +# Add GCC lib
> +ifdef USE_PRIVATE_LIBGCC
> +ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
> +PLATFORM_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/libgcc.o
> +else
> +PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
> +endif
> +else
> +PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc
> +endif
> +PLATFORM_LIBS += $(PLATFORM_LIBGCC)
> +export PLATFORM_LIBS

We already inherit this logic from the top level Makefile, so this leads
to duplicating $(OBJTREE)/arch/$(ARCH)/lib/libgcc.o in PLATFORM_LIBS.
Second, currently for ARM, libgcc.o ends up requring 'hang' to be
provided.

-- 
Tom
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