linux-kernel - Re: [PATCH] perf jit: Fix build issue on Ubuntu

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Date:   Thu, 13 Oct 2016 00:41:05 -0700
From:   Stephane Eranian <eranian@...gle.com>
To:     Anton Blanchard <anton@...abs.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf jit: Fix build issue on Ubuntu

On Wed, Oct 12, 2016 at 7:20 PM, Anton Blanchard <anton@...abs.org> wrote:
>
> From: Anton Blanchard <anton@...ba.org>
>
> When building on Ubuntu 16.04, I get the following error:
>
> Makefile:49: *** the openjdk development package appears to me missing, install and try again.  Stop.
>
> The problem is that update-java-alternatives has multiple spaces between
> fields, and cut treats each space as a new delimiter:
>
> java-1.8.0-openjdk-ppc64el     1081       /usr/lib/jvm/java-1.8.0-openjdk-ppc64el
>
> Fix this by using awk, which handles this fine.
>
> Signed-off-by: Anton Blanchard <anton@...ba.org>

Works for me. Thanks.
Reviewed-by: Stephane Eranian <eranian@...gle.com>

>
> ---
>  tools/perf/jvmti/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/jvmti/Makefile b/tools/perf/jvmti/Makefile
> index 5ce61a1..df14e6b 100644
> --- a/tools/perf/jvmti/Makefile
> +++ b/tools/perf/jvmti/Makefile
> @@ -36,7 +36,7 @@ SOLIBEXT=so
>  # The following works at least on fedora 23, you may need the next
>  # line for other distros.
>  ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
> -JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | cut -d ' ' -f 3)
> +JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
>  else
>    ifneq (,$(wildcard /usr/sbin/alternatives))
>      JDIR=$(shell alternatives --display java | tail -1 | cut -d' ' -f 5 | sed 's%/jre/bin/java.%%g')
> --
> 2.7.4
>