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perf build: Add feature detection for libelf's elf_getshdrstrndx()

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That appeared after 0.140, and will be used in the SDT code, so, to
avoid bisection break on older systems, add a feature detection and
provide a stub with a pr_debug() to keep it building.

Cc: Ananth N Mavinakayanahalli <[email protected]>
Cc: Brendan Gregg <[email protected]>
Cc: Hemant Kumar <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2016-07-04 19:35:47 -03:00
commit 2492c465ad
6 changed files with 30 additions and 0 deletions
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1
tools/build/Makefile.feature
View file

@ -40,6 +40,7 @@ FEATURE_TESTS_BASIC := \
libbfd \
libelf \
libelf-getphdrnum \
libelf-getshdrstrndx \
libelf-mmap \
libnuma \
numa_num_possible_cpus \

4
tools/build/feature/Makefile
View file

@ -17,6 +17,7 @@ FILES= \
test-cplus-demangle.bin \
test-libelf.bin \
test-libelf-getphdrnum.bin \
test-libelf-getshdrstrndx.bin \
test-libelf-mmap.bin \
test-libnuma.bin \
test-numa_num_possible_cpus.bin \
@ -98,6 +99,9 @@ $(OUTPUT)test-libelf-mmap.bin:
$(OUTPUT)test-libelf-getphdrnum.bin:
$(BUILD) -lelf
$(OUTPUT)test-libelf-getshdrstrndx.bin:
$(BUILD) -lelf
$(OUTPUT)test-libnuma.bin:
$(BUILD) -lnuma

5
tools/build/feature/test-all.c
View file

@ -49,6 +49,10 @@
# include "test-libelf-getphdrnum.c"
#undef main
#define main main_test_libelf_getshdrstrndx
# include "test-libelf-getshdrstrndx.c"
#undef main
#define main main_test_libunwind
# include "test-libunwind.c"
#undef main
@ -149,6 +153,7 @@ int main(int argc, char *argv[])
main_test_dwarf();
main_test_dwarf_getlocations();
main_test_libelf_getphdrnum();
main_test_libelf_getshdrstrndx();
main_test_libunwind();
main_test_libaudit();
main_test_libslang();

8
tools/build/feature/test-libelf-getshdrstrndx.c Normal file
View file

@ -0,0 +1,8 @@
#include <libelf.h>
int main(void)
{
size_t dst;
return elf_getshdrstrndx(0, &dst);
}