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Commit 1fa0bc3f authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
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perf tools: Add LIBDW_DIR Makefile variable to for alternate libdw 



Adding LIBDW_DIR Makefile variable to be able to specify
alternate libdw library location.

To use it run make like:
  $ make LIBDW_DIR=/opt/libdw/

Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-n2uv8c9ti6b26fioaw2rq5yv@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent d4fcf0a8

tools/perf/Makefile

+10 −2
Original line number Diff line number Diff line
@@ -501,7 +501,14 @@ ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF),libelf),y) 
		msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]/glibc-static);

	endif

else

	FLAGS_DWARF=$(ALL_CFLAGS) -ldw -lelf $(ALL_LDFLAGS) $(EXTLIBS)

	# for linking with debug library, run like:

	# make DEBUG=1 LIBDW_DIR=/opt/libdw/

	ifdef LIBDW_DIR

		LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include

		LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib

	endif



	FLAGS_DWARF=$(ALL_CFLAGS) $(LIBDW_CFLAGS) -ldw -lelf $(LIBDW_LDFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)

	ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF),libdw),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);

		NO_DWARF := 1
@@ -556,7 +563,8 @@ 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);

else

	BASIC_CFLAGS += -DDWARF_SUPPORT

	BASIC_CFLAGS := -DDWARF_SUPPORT $(LIBDW_CFLAGS) $(BASIC_CFLAGS)

	BASIC_LDFLAGS := $(LIBDW_LDFLAGS) $(BASIC_LDFLAGS)

	EXTLIBS += -lelf -ldw

	LIB_OBJS += $(OUTPUT)util/probe-finder.o

	LIB_OBJS += $(OUTPUT)util/dwarf-aux.o