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Commit 8f7f8005 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

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

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-qznhihaasbysfqO7ffvRsf9q@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 50eed7a7

tools/perf/config/Makefile

+2 −2
Original line number Diff line number Diff line
@@ -108,6 +108,7 @@ FEATURE_TESTS = \ 
	volatile-register-var		\

	fortify-source			\

	bionic				\

	libelf				\

	libnuma



$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -164,8 +165,7 @@ ifdef NO_LIBELF 
  NO_DEMANGLE := 1

  NO_LIBUNWIND := 1

else

  FLAGS_LIBELF=$(CFLAGS) $(LDFLAGS) $(EXTLIBS)

  ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF),libelf),y)

  ifeq ($(feature-libelf), 0)

    FLAGS_GLIBC=$(CFLAGS) $(LDFLAGS)

    ifeq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC),glibc),y)

      LIBC_SUPPORT := 1

tools/perf/config/feature-checks/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ FILES= \ 
	test-volatile-register-var	\

	test-fortify-source		\

	test-bionic			\

	test-libelf			\

	test-libnuma



CC := $(CC) -MD
@@ -34,6 +35,9 @@ test-fortify-source: 
test-bionic:

	$(BUILD)



test-libelf:

	$(BUILD) -lelf



test-libnuma:

	$(BUILD) -lnuma

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

0 → 100644
+7 −0
Original line number Diff line number Diff line 
#include <libelf.h>



int main(void)

{

	Elf *elf = elf_begin(0, ELF_C_READ, 0);

	return (long)elf;

}