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: Ingo Molnar <mingo@kernel.org>
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e12762cfd9
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8295d4e272
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@ -110,6 +110,7 @@ FEATURE_TESTS = \
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bionic \
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libelf \
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glibc \
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dwarf \
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libnuma
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$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
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@ -190,8 +191,7 @@ else
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LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
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endif
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FLAGS_DWARF=$(CFLAGS) $(LIBDW_CFLAGS) -ldw -lz -lelf $(LIBDW_LDFLAGS) $(LDFLAGS) $(EXTLIBS)
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ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF),libdw),y)
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ifneq ($(feature-dwarf), 1)
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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);
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NO_DWARF := 1
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endif # Dwarf support
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@ -8,6 +8,7 @@ FILES= \
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test-bionic \
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test-libelf \
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test-glibc \
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test-dwarf \
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test-libnuma
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CC := $(CC) -MD
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@ -42,6 +43,9 @@ test-libelf:
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test-glibc:
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$(BUILD)
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test-dwarf:
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$(BUILD) -ldw
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test-libnuma:
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$(BUILD) -lnuma
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@ -0,0 +1,9 @@
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#include <dwarf.h>
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#include <elfutils/libdw.h>
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#include <elfutils/version.h>
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int main(void)
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{
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Dwarf *dbg = dwarf_begin(0, DWARF_C_READ);
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return (long)dbg;
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}
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