tools/perf/build: Split out feature checks: 'liberty', 'liberty-z', 'cplus-demangle'

Note that these are rarely executed tests, so we call feature_check() explicitly
and don't have them in CORE_FEATURE_CHECKS.

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-pvumlx6mbtfxffgrlwO2mRcx@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index d4c55ac..e21bceb 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -11,6 +11,9 @@
 	test-hello			\
 	test-libaudit			\
 	test-libbfd			\
+	test-liberty			\
+	test-liberty-z			\
+	test-cplus-demangle		\
 	test-libelf			\
 	test-libelf-getphdrnum		\
 	test-libelf-mmap		\
@@ -122,6 +125,15 @@
 test-libbfd:
 	$(BUILD) -DPACKAGE='perf' -DPACKAGE=perf -lbfd -ldl
 
+test-liberty:
+	$(CC) -o $(OUTPUT)$@ test-libbfd.c -DPACKAGE='perf' -DPACKAGE=perf -lbfd -ldl -liberty
+
+test-liberty-z:
+	$(CC) -o $(OUTPUT)$@ test-libbfd.c -DPACKAGE='perf' -DPACKAGE=perf -lbfd -ldl -liberty -lz
+
+test-cplus-demangle:
+	$(BUILD) -liberty
+
 test-on-exit:
 	$(BUILD)