linux-kernel - [PATCH 5.7 033/120] libtraceevent: Fix build with binutils 2.35

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Date:   Mon,  3 Aug 2020 14:18:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.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 5.7 033/120] libtraceevent: Fix build with binutils 2.35

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

commit 39efdd94e314336f4acbac4c07e0f37bdc3bef71 upstream.

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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 tools/lib/traceevent/plugins/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/lib/traceevent/plugins/Makefile
+++ b/tools/lib/traceevent/plugins/Makefile
@@ -197,7 +197,7 @@ 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                                                            \