[tip:perf/core] perf s390: Always build with -fPIC

[tip-bot for Hendrik Brueckner]

Commit-ID:  a9a3f1d18a6c9ccf89728e23474645aa91e2f4f1
Gitweb:     https://git.kernel.org/tip/a9a3f1d18a6c9ccf89728e23474645aa91e2f4f1
Author:     Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
AuthorDate: Wed, 13 Dec 2017 17:46:54 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 27 Dec 2017 12:15:57 -0300

perf s390: Always build with -fPIC

On s390, object files must be compiled with position-indepedent code in
order to be incrementally linked or linked to shared libraries.

Therefore, add -fPIC to the CFLAGS for s390 to ensure each object file
is built properly.

Reported-by: Jonathan Hermann <jonathan.hermann@xxxxxxxxxx>
Signed-off-by: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Thomas Richter <tmricht@xxxxxxxxxxxxxxxxxx>
Cc: linux s390 list <linux-s390@xxxxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20171207080951.GC4889@xxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/Makefile.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index eb6bd99..f050f38 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -58,7 +58,7 @@ endif
 ifeq ($(ARCH),s390)
   NO_PERF_REGS := 0
   NO_SYSCALL_TABLE := 0
-  CFLAGS += -I$(OUTPUT)arch/s390/include/generated
+  CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
 endif
 
 ifeq ($(NO_PERF_REGS),0)