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Commit 8869b17e authored by Ingo Molnar's avatar Ingo Molnar
Browse files

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

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-9fxnxjcmrgbSvipxlwsdQ8fg@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent fb3d333b

tools/perf/config/Makefile

+3 −3
Original line number Diff line number Diff line
@@ -111,6 +111,7 @@ FEATURE_TESTS = \ 
	libelf				\

	glibc				\

	dwarf				\

	libelf-mmap			\

	libnuma



$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -202,7 +203,7 @@ ifndef NO_LIBELF 
  CFLAGS += -DHAVE_LIBELF_SUPPORT

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



  ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DHAVE_LIBELF_MMAP_SUPPORT),y)

  ifeq ($(feature-libelf-mmap), 1)

    CFLAGS += -DHAVE_LIBELF_MMAP_SUPPORT

  endif
@@ -227,8 +228,7 @@ endif # NO_LIBELF 


ifndef NO_LIBELF

  CFLAGS += -DHAVE_LIBELF_SUPPORT

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

  ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DHAVE_LIBELF_MMAP_SUPPORT),y)

  ifeq ($(feature-libelf-mmap), 1)

    CFLAGS += -DHAVE_LIBELF_MMAP_SUPPORT

  endif # try-cc

endif # NO_LIBELF

tools/perf/config/feature-checks/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ FILES= \ 
	test-libelf			\

	test-glibc			\

	test-dwarf			\

	test-libelf-mmap		\

	test-libnuma



CC := $(CC) -MD
@@ -46,6 +47,9 @@ test-glibc: 
test-dwarf:

	$(BUILD) -ldw



test-libelf-mmap:

	$(BUILD) -lelf



test-libnuma:

	$(BUILD) -lnuma

tools/perf/config/feature-checks/test-libelf-mmap.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_MMAP, 0);

	return (long)elf;

}