From: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To: John Garry <john.garry@huawei.com>
Cc: peterz@infradead.org, mingo@redhat.com,
alexander.shishkin@linux.intel.com, jolsa@redhat.com,
namhyung@kernel.org, mark.rutland@arm.com,
linux-kernel@vger.kernel.org, will@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC PATCH] perf tools: Fix cross compile for ARM64
Date: Wed, 6 Nov 2019 11:00:36 -0300 [thread overview]
Message-ID: <20191106140036.GA6259@kernel.org> (raw)
In-Reply-To: <1573045254-39833-1-git-send-email-john.garry@huawei.com>
Em Wed, Nov 06, 2019 at 09:00:54PM +0800, John Garry escreveu:
> Currently when cross compiling perf tool for ARM64 on my x86 machine I get
> this error:
> arch/arm64/util/sym-handling.c:9:10: fatal error: gelf.h: No such file or directory
> #include <gelf.h>
>
> For the build, libelf is reported off:
> Auto-detecting system features:
> ...
> ... libelf: [ OFF ]
Thanks, applied.
- Arnaldo
> Indeed, test-libelf is not built successfully:
> more ./build/feature/test-libelf.make.output
> test-libelf.c:2:10: fatal error: libelf.h: No such file or directory
> #include <libelf.h>
> ^~~~~~~~~~
> compilation terminated.
>
> I have no such problems natively compiling on ARM64, and I did not
> previously have this issue for cross compiling. Fix by relocating
> the gelf.h include.
>
> Signed-off-by: John Garry <john.garry@huawei.com>
> ---
>
> I marked this as RFC as I am suspicious that I have seen no other
> reports, and whether fixing up the libelf.h include issue is the proper
> approach.
>
> diff --git a/tools/perf/arch/arm64/util/sym-handling.c b/tools/perf/arch/arm64/util/sym-handling.c
> index 5df788985130..8dfa3e5229f1 100644
> --- a/tools/perf/arch/arm64/util/sym-handling.c
> +++ b/tools/perf/arch/arm64/util/sym-handling.c
> @@ -6,9 +6,10 @@
>
> #include "symbol.h" // for the elf__needs_adjust_symbols() prototype
> #include <stdbool.h>
> -#include <gelf.h>
>
> #ifdef HAVE_LIBELF_SUPPORT
> +#include <gelf.h>
> +
> bool elf__needs_adjust_symbols(GElf_Ehdr ehdr)
> {
> return ehdr.e_type == ET_EXEC ||
> --
> 2.17.1
--
- Arnaldo
next prev parent reply other threads:[~2019-11-06 14:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-06 13:00 [RFC PATCH] perf tools: Fix cross compile for ARM64 John Garry
2019-11-06 14:00 ` Arnaldo Carvalho de Melo [this message]
2019-12-10 16:13 ` perf top for arm64? John Garry
2019-12-10 16:36 ` Jiri Olsa
2019-12-10 16:52 ` John Garry
2019-12-10 17:08 ` Jiri Olsa
2019-12-10 17:17 ` John Garry
2019-12-10 19:51 ` Arnaldo Carvalho de Melo
2019-12-11 13:33 ` [PATCHES] Fix 'perf top' breakage on architectures not providing get_cpuid() " Arnaldo Carvalho de Melo
2019-12-11 14:46 ` Mark Rutland
2019-12-11 15:28 ` Arnaldo Carvalho de Melo
2019-12-11 14:50 ` John Garry
2019-12-11 14:54 ` Jiri Olsa
2019-12-11 1:48 ` Joakim Zhang
2019-12-11 2:36 ` Zenghui Yu
2019-12-10 19:48 ` Arnaldo Carvalho de Melo
2019-11-12 11:17 ` [tip: perf/core] perf tools: Fix cross compile for ARM64 tip-bot2 for John Garry
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