[Buildroot] [PATCH] perf: append endianness argument to ld when building for MIPS
Arnout Vandecappelle
arnout at mind.be
Sat Feb 20 22:46:34 UTC 2016
On 02/18/16 18:23, Vicente Olivert Riera wrote:
> We need to pass an argument to ld for setting the endianness when
> building it for MIPS architecture, otherwise the default one will always
> be used (which is big endian) and the compilation for little endian will
> always fail showing an error like this one:
>
> LD foo.o
> mips-linux-gnu-ld: foo.o: compiled for a little endian system and target
> is big endian
>
> Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
> ---
> linux/linux-tool-perf.mk | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/linux/linux-tool-perf.mk b/linux/linux-tool-perf.mk
> index 07c3514..7ad6629 100644
> --- a/linux/linux-tool-perf.mk
> +++ b/linux/linux-tool-perf.mk
> @@ -27,6 +27,21 @@ PERF_MAKE_FLAGS = \
> WERROR=0 \
> ASCIIDOC=
>
> +# We need to pass an argument to ld for setting the endianness when
> +# building it for MIPS architecture, otherwise the default one will
> +# always be used (which is big endian) and the compilation for little
> +# endian will always fail showing an error like this one:
> +# LD foo.o
> +# mips-linux-gnu-ld: foo.o: compiled for a little endian system and
> +# target is big endian
> +ifeq ($(BR2_mips)$(BR2_mipsel)$(BR2_mips64)$(BR2_mips64el),y)
> +ifeq ($(BR2_ENDIAN),"BIG")
Er, isn't this a bit silly? Can you have big-endian mipsel, or little-endian mips?
Regards,
Arnout
> +PERF_MAKE_FLAGS += LD="$(TARGET_LD) -EB"
> +else
> +PERF_MAKE_FLAGS += LD="$(TARGET_LD) -EL"
> +endif
> +endif
> +
> # The call to backtrace() function fails for ARC, because for some
> # reason the unwinder from libgcc returns early. Thus the usage of
> # backtrace() should be disabled in perf explicitly: at build time
>
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven
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