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Commit 8295d4e2 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

tools/perf/build: Split out feature check: 'dwarf' 

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-dsx0fn9mjwfprizboANvtuup@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent e12762cf

tools/perf/config/Makefile

+2 −2
Original line number Diff line number Diff line
@@ -110,6 +110,7 @@ FEATURE_TESTS = \ 
	bionic				\

	libelf				\

	glibc				\

	dwarf				\

	libnuma



$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -190,8 +191,7 @@ else 
      LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib

    endif



    FLAGS_DWARF=$(CFLAGS) $(LIBDW_CFLAGS) -ldw -lz -lelf $(LIBDW_LDFLAGS) $(LDFLAGS) $(EXTLIBS)

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

    ifneq ($(feature-dwarf), 1)

      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

    endif # Dwarf support

tools/perf/config/feature-checks/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ FILES= \ 
	test-bionic			\

	test-libelf			\

	test-glibc			\

	test-dwarf			\

	test-libnuma



CC := $(CC) -MD
@@ -42,6 +43,9 @@ test-libelf: 
test-glibc:

	$(BUILD)



test-dwarf:

	$(BUILD) -ldw



test-libnuma:

	$(BUILD) -lnuma

tools/perf/config/feature-checks/test-dwarf.c

0 → 100644
+9 −0
Original line number Diff line number Diff line 
#include <dwarf.h>

#include <elfutils/libdw.h>

#include <elfutils/version.h>



int main(void)

{

	Dwarf *dbg = dwarf_begin(0, DWARF_C_READ);

	return (long)dbg;

}