linux-kernel - [PATCH 1/3] perf tools: Fix perf builds with clang support

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Date:   Wed,  4 Apr 2018 23:34:17 +0530
From:   Sandipan Das <sandipan@...ux.vnet.ibm.com>
To:     acme@...nel.org, jolsa@...hat.com
Cc:     linux-kernel@...r.kernel.org, naveen.n.rao@...ux.vnet.ibm.com
Subject: [PATCH 1/3] perf tools: Fix perf builds with clang support

For libclang, some distro packages provide static libraries (.a)
while some provide shared libraries (.so). Currently, perf code
can only be linked with static libraries. This makes perf build
possible for both cases.

Fixes: d58ac0bf8d1e ("perf build: Add clang and llvm compile and linking support")
Signed-off-by: Sandipan Das <sandipan@...ux.vnet.ibm.com>
---
 tools/perf/Makefile.perf | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index f7517e1b73f8..83e453de36f8 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -364,7 +364,8 @@ LIBS = -Wl,--whole-archive $(PERFLIBS) $(EXTRA_PERFLIBS) -Wl,--no-whole-archive
 
 ifeq ($(USE_CLANG), 1)
   CLANGLIBS_LIST = AST Basic CodeGen Driver Frontend Lex Tooling Edit Sema Analysis Parse Serialization
-  LIBCLANG = $(foreach l,$(CLANGLIBS_LIST),$(wildcard $(shell $(LLVM_CONFIG) --libdir)/libclang$(l).a))
+  CLANGLIBS_NOEXT_LIST = $(foreach l,$(CLANGLIBS_LIST),$(shell $(LLVM_CONFIG) --libdir)/libclang$(l))
+  LIBCLANG = $(foreach l,$(CLANGLIBS_NOEXT_LIST),$(wildcard $(l).a $(l).so))
   LIBS += -Wl,--start-group $(LIBCLANG) -Wl,--end-group
 endif
 
-- 
2.14.3