selftests/powerpc: Handle Makefile for unrecognized option

On older distributions like Sles12SP5 gcc does not recognize
-no-pie option making the powerpc selftests build to fail

Fixes the following:
gcc: error: unrecognized command line option ‘-no-pie’

Signed-off-by: Harish <harish@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191113094219.14946-1-harish@linux.ibm.com

diff --git a/tools/testing/selftests/powerpc/pmu/ebb/Makefile b/tools/testing/selftests/powerpc/pmu/ebb/Makefile
index 23f4caf48ffc6b6b84d00ac212ea6352eba4f723..417306353e07bbb9c5af67623696c01cd3aa5862 100644 (file)
--- a/tools/testing/selftests/powerpc/pmu/ebb/Makefile
+++ b/tools/testing/selftests/powerpc/pmu/ebb/Makefile
@@ -1,4 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
+include ../../../../../../scripts/Kbuild.include
+
 noarg:
        $(MAKE) -C ../../
 
@@ -6,7 +8,10 @@ noarg:
 CFLAGS += -m64
 
 # Toolchains may build PIE by default which breaks the assembly
-LDFLAGS += -no-pie
+no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
+        $(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)
+
+LDFLAGS += $(no-pie-option)
 
 TEST_GEN_PROGS := reg_access_test event_attributes_test cycles_test    \
         cycles_with_freeze_test pmc56_overflow_test            \