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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: Ingo Molnar <mingo@kernel.org>
wifi-calibration
Ingo Molnar 2013-09-30 14:45:44 +02:00
parent 308e1e700a
commit 058f952de9
3 changed files with 32 additions and 5 deletions
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13
tools/perf/config/Makefile
View File

@ -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:
# make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
#
# 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

4
tools/perf/config/feature-checks/Makefile
View File

@ -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
###############################

20
tools/perf/config/feature-checks/test-libunwind.c 100644
View File

@ -0,0 +1,20 @@
#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;
}