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Subject[PATCH RESEND] perf: Remove hardcoded include paths for elfutils
This change removes the use of hardcoded absolute
"/usr/include/elfutils" paths from the perf build. The problem with
hardcoded paths is that it prevents them from being overridden by
$prefix or by -I in CFLAGS (e.g., for cross-compiling purposes).

Instead, just include the "elfutils/" subdirectory as a relative path
when files are needed from that directory.

Tested by building perf:
- Cross-compiled for ARM on x86_64
- Built natively on x86_64
- Built on x86_64 with /usr/include/elfutils moved to another location
and manually included in CFLAGS

Signed-off-by: Robert Morell <>
tools/perf/Makefile | 4 ++--
tools/perf/feature-tests.mak | 4 ++--
tools/perf/util/probe-finder.h | 6 +++---
3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index d1db0f6..74b684d 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -507,7 +507,7 @@ PERFLIBS = $(LIB_FILE)
-include config.mak

ifndef NO_DWARF
-FLAGS_DWARF=$(ALL_CFLAGS) -I/usr/include/elfutils -ldw -lelf $(ALL_LDFLAGS) $(EXTLIBS)
ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF)),y)
msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
@@ -554,7 +554,7 @@ ifndef NO_DWARF
ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
msg := $(warning DWARF register mappings have not been defined for architecture $(ARCH), DWARF support disabled);
- BASIC_CFLAGS += -I/usr/include/elfutils -DDWARF_SUPPORT
EXTLIBS += -lelf -ldw
LIB_OBJS += $(OUTPUT)util/probe-finder.o
diff --git a/tools/perf/feature-tests.mak b/tools/perf/feature-tests.mak
index b253db6..b041ca6 100644
--- a/tools/perf/feature-tests.mak
+++ b/tools/perf/feature-tests.mak
@@ -9,8 +9,8 @@ endef
ifndef NO_DWARF
#include <dwarf.h>
-#include <libdw.h>
-#include <version.h>
+#include <elfutils/libdw.h>
+#include <elfutils/version.h>
diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
index bba69d4..beaefc3 100644
--- a/tools/perf/util/probe-finder.h
+++ b/tools/perf/util/probe-finder.h
@@ -34,9 +34,9 @@ extern int find_available_vars_at(int fd, struct perf_probe_event *pev,
bool externs);

#include <dwarf.h>
-#include <libdw.h>
-#include <libdwfl.h>
-#include <version.h>
+#include <elfutils/libdw.h>
+#include <elfutils/libdwfl.h>
+#include <elfutils/version.h>

struct probe_finder {
struct perf_probe_event *pev; /* Target probe event */

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