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

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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-wa9qstb8erbjreLxiHepzjfw@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2013-09-30 14:35:27 +02:00
parent 8869b17ee0
commit b7bcef6f8e
3 changed files with 14 additions and 2 deletions
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5
tools/perf/config/Makefile
View File

@ -112,6 +112,7 @@ FEATURE_TESTS = \
glibc \
dwarf \
libelf-mmap \
libelf-getphdrnum \
libnuma
$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@ -207,7 +208,7 @@ ifndef NO_LIBELF
CFLAGS += -DHAVE_LIBELF_MMAP_SUPPORT
endif
ifeq ($(call try-cc,$(SOURCE_ELF_GETPHDRNUM),$(FLAGS_LIBELF),-DHAVE_ELF_GETPHDRNUM_SUPPORT),y)
ifeq ($(feature-libelf-getphdrnum), 1)
CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
endif
@ -230,7 +231,7 @@ ifndef NO_LIBELF
CFLAGS += -DHAVE_LIBELF_SUPPORT
ifeq ($(feature-libelf-mmap), 1)
CFLAGS += -DHAVE_LIBELF_MMAP_SUPPORT
endif # try-cc
endif
endif # NO_LIBELF
# There's only x86 (both 32 and 64) support for CFI unwind so far

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

@ -10,6 +10,7 @@ FILES= \
test-glibc \
test-dwarf \
test-libelf-mmap \
test-libelf-getphdrnum \
test-libnuma
CC := $(CC) -MD
@ -50,6 +51,9 @@ test-dwarf:
test-libelf-mmap:
$(BUILD) -lelf
test-libelf-getphdrnum:
$(BUILD) -lelf
test-libnuma:
$(BUILD) -lnuma

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

@ -0,0 +1,7 @@
#include <libelf.h>
#
int main(void)
{
size_t dst;
return elf_getphdrnum(0, &dst);
}