linux-kernel - [PATCH 4.14 02/34] perf tools: Fix compile error with libunwind x86

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Message-Id: <20190318084144.978483715@linuxfoundation.org>
Date:   Mon, 18 Mar 2019 10:25:26 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Wang Nan <wangnan0@...wei.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Daniel Díaz <daniel.diaz@...aro.org>
Subject: [PATCH 4.14 02/34] perf tools: Fix compile error with libunwind x86

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wang Nan <wangnan0@...wei.com>

commit 44df1afdb174fd6038e419f80efd914c0b5f2f85 upstream.

Fix a compile error:

 ...
   CC       util/libunwind/x86_32.o
 In file included from util/libunwind/x86_32.c:33:0:
 util/libunwind/../../arch/x86/util/unwind-libunwind.c: In function 'libunwind__x86_reg_id':
 util/libunwind/../../arch/x86/util/unwind-libunwind.c:110:11: error: 'EINVAL' undeclared (first use in this function)
    return -EINVAL;
            ^
 util/libunwind/../../arch/x86/util/unwind-libunwind.c:110:11: note: each undeclared identifier is reported only once for each function it appears in
 mv: cannot stat 'util/libunwind/.x86_32.o.tmp': No such file or directory
 make[4]: *** [util/libunwind/x86_32.o] Error 1
 make[3]: *** [util] Error 2
 make[2]: *** [libperf-in.o] Error 2
 make[1]: *** [sub-make] Error 2
 make: *** [all] Error 2

It happens when libunwind-x86 feature is detected.

Signed-off-by: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/20171206015040.114574-1-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Daniel Díaz <daniel.diaz@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 tools/perf/arch/x86/util/unwind-libunwind.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/perf/arch/x86/util/unwind-libunwind.c
+++ b/tools/perf/arch/x86/util/unwind-libunwind.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
-#ifndef REMOTE_UNWIND_LIBUNWIND
 #include <errno.h>
+#ifndef REMOTE_UNWIND_LIBUNWIND
 #include <libunwind.h>
 #include "perf_regs.h"
 #include "../../util/unwind.h"