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

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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-9fxnxjcmrgbSvipxlwsdQ8fg@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2013-09-30 15:02:28 +02:00
parent fb3d333b3f
commit 8869b17ee0
3 changed files with 14 additions and 3 deletions
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6
tools/perf/config/Makefile
View File

@ -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

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

@ -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

7
tools/perf/config/feature-checks/test-libelf-mmap.c Normal file
View File

@ -0,0 +1,7 @@
#include <libelf.h>
#
int main(void)
{
Elf *elf = elf_begin(0, ELF_C_READ_MMAP, 0);
return (long)elf;
}