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

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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-qznhihaasbysfqO7ffvRsf9q@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2013-09-30 14:20:25 +02:00
parent 50eed7a71e
commit 8f7f8005f5
3 changed files with 13 additions and 2 deletions
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4
tools/perf/config/Makefile
View File

@ -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

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

@ -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

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

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