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

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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: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2013-10-07 10:35:39 +02:00
parent e12762cfd9
commit 8295d4e272
3 changed files with 15 additions and 2 deletions
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4
tools/perf/config/Makefile
View file

@ -110,6 +110,7 @@ FEATURE_TESTS = \
bionic \ bionic \
libelf \ libelf \
glibc \ glibc \
dwarf \
libnuma libnuma
$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test))) $(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@ -190,8 +191,7 @@ else
LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
endif endif
FLAGS_DWARF=$(CFLAGS) $(LIBDW_CFLAGS) -ldw -lz -lelf $(LIBDW_LDFLAGS) $(LDFLAGS) $(EXTLIBS) ifneq ($(feature-dwarf), 1)
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); 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 NO_DWARF := 1
endif # Dwarf support endif # Dwarf support

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

@ -8,6 +8,7 @@ FILES= \
test-bionic \ test-bionic \
test-libelf \ test-libelf \
test-glibc \ test-glibc \
test-dwarf \
test-libnuma test-libnuma
CC := $(CC) -MD CC := $(CC) -MD
@ -42,6 +43,9 @@ test-libelf:
test-glibc: test-glibc:
$(BUILD) $(BUILD)
test-dwarf:
$(BUILD) -ldw
test-libnuma: test-libnuma:
$(BUILD) -lnuma $(BUILD) -lnuma

9
tools/perf/config/feature-checks/test-dwarf.c Normal file
View file

@ -0,0 +1,9 @@
#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;
}