[Buildroot] [PATCH] perf: Fix compilation without libelf for post-3.10 kernels

Thomas De Schampheleire patrickdepinguin at gmail.com
Mon May 5 12:52:52 UTC 2014


On Sat, Apr 5, 2014 at 2:51 PM, Peter Meerwald <pmeerw at pmeerw.net> wrote:
> kernel commit cf4cca10 (perf tools: Move libelf check config into config/Makefile)
> removes the NO_LIBELF check from the top-level Makefile
>
> for newer kernels, if config/Makefile exists, we can assume that NO_LIBELF is
> also there
>
> Signed-off-by: Peter Meerwald <pmeerw at pmeerw.net>
> ---
>  package/perf/perf.mk | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/package/perf/perf.mk b/package/perf/perf.mk
> index d7898d0..7610f3d 100644
> --- a/package/perf/perf.mk
> +++ b/package/perf/perf.mk
> @@ -36,9 +36,11 @@ define PERF_BUILD_CMDS
>         fi
>         $(Q)if test "$(BR2_PACKAGE_ELFUTILS)" = "" ; then \
>                 if ! grep -q NO_LIBELF $(LINUX_DIR)/tools/perf/Makefile ; then \
> -                       echo "The perf tool in your kernel cannot be built without libelf." ; \
> -                       echo "Either upgrade your kernel to >= 3.7, or enable the elfutils package." ; \
> -                       exit 1 ; \
> +                       if ! test -r $(LINUX_DIR)/tools/perf/config/Makefile ; then \
> +                               echo "The perf tool in your kernel cannot be built without libelf." ; \
> +                               echo "Either upgrade your kernel to >= 3.7, or enable the elfutils package." ; \
> +                               exit 1 ; \
> +                       fi \
>                 fi \
>         fi
>         $(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools/perf \

Reviewed-by: Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>
Tested-by: Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>


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