[PATCH] perf: Fix libdw-dev package name in error message

[Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>]

The headers required for DWARF support are provided by the libdw-dev
package in Debian-based distros.  This patch corrects the elfutils-dev
package name to libdw-dev in the Makefile error message when libdw.h is
not found.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
---
I don't think any distro has an elfutils-dev package but the name was chosen because of the usual RedHat/Debian -devel/-dev convention.

 tools/perf/Makefile |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index bc0f670..66c525b 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -505,7 +505,7 @@ else
 endif
 
 ifneq ($(shell sh -c "(echo '\#include <dwarf.h>'; echo '\#include <libdw.h>'; echo 'int main(void) { Dwarf *dbg; dbg = dwarf_begin(0, DWARF_C_READ); return (long)dbg; }') | $(CC) -x c - $(ALL_CFLAGS) -I/usr/include/elfutils -ldw -lelf -o $(BITBUCKET) $(ALL_LDFLAGS) $(EXTLIBS) "$(QUIET_STDERR)" && echo y"), y)
-	msg := $(warning No libdw.h found or old libdw.h found, disables dwarf support. Please install elfutils-devel/elfutils-dev);
+	msg := $(warning No libdw.h found or old libdw.h found, disables dwarf support. Please install elfutils-devel/libdw-dev);
 	BASIC_CFLAGS += -DNO_DWARF_SUPPORT
 else
 	BASIC_CFLAGS += -I/usr/include/elfutils
-- 
1.7.0