linux-kernel - [PATCH] [BACKPORT FOR 4.14] libtraceevent: Fix build with binutils 2.35

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Date:   Tue, 13 Dec 2022 19:03:07 +0100
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     gregkh@...uxfoundation.org, stable@...r.kernel.org
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Ben Hutchings <ben@...adent.org.uk>,
        Salvatore Bonaccorso <carnil@...ian.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-trace-devel@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH] [BACKPORT FOR 4.14] libtraceevent: Fix build with binutils 2.35

From: Ben Hutchings <ben@...adent.org.uk>

[upstream commit 39efdd94e314336f4acbac4c07e0f37bdc3bef71]

In binutils 2.35, 'nm -D' changed to show symbol versions along with
symbol names, with the usual @@ separator.  When generating
libtraceevent-dynamic-list we need just the names, so strip off the
version suffix if present.

Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Tested-by: Salvatore Bonaccorso <carnil@...ian.org>
Reviewed-by: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-trace-devel@...r.kernel.org
Cc: stable@...r.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 tools/lib/traceevent/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index a0ac01c647f5..2d6989f8a87c 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -263,7 +263,7 @@ define do_generate_dynamic_list_file
 	xargs echo "U w W" | tr 'w ' 'W\n' | sort -u | xargs echo`;\
 	if [ "$$symbol_type" = "U W" ];then				\
 		(echo '{';						\
-		$(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u;\
+		$(NM) -u -D $1 | awk 'NF>1 {sub("@.*", "", $$2); print "\t"$$2";"}' | sort -u;\
 		echo '};';						\
 		) > $2;							\
 	else								\
-- 
2.38.1