Commit 058f952d authored by Ingo Molnar's avatar Ingo Molnar
Browse files

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

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-vTiatsVyva3tfgh3vhxaidxl@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 308e1e70

tools/perf/config/Makefile

+8 −5
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ FEATURE_TESTS = \ 
	dwarf				\

	libelf-mmap			\

	libelf-getphdrnum		\

	libunwind			\

	libnuma



$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -240,15 +241,17 @@ ifneq ($(ARCH),x86) 
endif



ifndef NO_LIBUNWIND

  # for linking with debug library, run like:

  #

  # For linking with debug library, run like:

  #

  #   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/

  #

  ifdef LIBUNWIND_DIR

    LIBUNWIND_CFLAGS  := -I$(LIBUNWIND_DIR)/include

    LIBUNWIND_LDFLAGS := -L$(LIBUNWIND_DIR)/lib

  endif



  FLAGS_UNWIND=$(LIBUNWIND_CFLAGS) $(CFLAGS) $(LIBUNWIND_LDFLAGS) $(LDFLAGS) $(EXTLIBS) $(LIBUNWIND_LIBS)

  ifneq ($(call try-cc,$(SOURCE_LIBUNWIND),$(FLAGS_UNWIND),libunwind),y)

  ifneq ($(feature-libunwind), 1)

    msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 0.99);

    NO_LIBUNWIND := 1

  endif
@@ -259,7 +262,7 @@ ifndef NO_LIBUNWIND 
  EXTLIBS += $(LIBUNWIND_LIBS)

  CFLAGS += $(LIBUNWIND_CFLAGS)

  LDFLAGS += $(LIBUNWIND_LDFLAGS)

endif # NO_LIBUNWIND

endif



ifndef NO_LIBAUDIT

  FLAGS_LIBAUDIT = $(CFLAGS) $(LDFLAGS) -laudit

tools/perf/config/feature-checks/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ FILES= \ 
	test-dwarf			\

	test-libelf-mmap		\

	test-libelf-getphdrnum		\

	test-libunwind			\

	test-libnuma



CC := $(CC) -MD
@@ -57,6 +58,9 @@ test-libelf-getphdrnum: 
test-libnuma:

	$(BUILD) -lnuma



test-libunwind:

	$(BUILD) -lunwind -lunwind-x86_64 -lelf



-include *.d */*.d



###############################

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

0 → 100644
+20 −0
Original line number Diff line number Diff line 
#include <libunwind.h>

#include <stdlib.h>



extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,

                                      unw_word_t ip,

                                      unw_dyn_info_t *di,

                                      unw_proc_info_t *pi,

                                      int need_unwind_info, void *arg);





#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table)



int main(void)

{

	unw_addr_space_t addr_space;

	addr_space = unw_create_addr_space(NULL, 0);

	unw_init_remote(NULL, addr_space, NULL);

	dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL);

	return 0;

}

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