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Subject[PATCH 2/2] perf tools: Hook up MIPS unwind and dwarf-regs in the Makefile
Date
From: David Daney <david.daney@cavium.com>

Define a new symbol (ARCH_SUPPORTS_LIBUNWIND) in config/Makefile.
Use this from x86 and MIPS to gate testing of libunwind.

Signed-off-by: David Daney <david.daney@cavium.com>
---
tools/perf/config/Makefile | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index f139dcd..90a0e58 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -11,6 +11,7 @@ CFLAGS := $(EXTRA_CFLAGS) $(EXTRA_WARNINGS)
# Additional ARCH settings for x86
ifeq ($(ARCH),i386)
override ARCH := x86
+ ARCH_SUPPORTS_LIBUNWIND := 1
NO_PERF_REGS := 0
LIBUNWIND_LIBS = -lunwind -lunwind-x86
endif
@@ -26,10 +27,18 @@ ifeq ($(ARCH),x86_64)
CFLAGS += -DARCH_X86_64
ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
endif
+ ARCH_SUPPORTS_LIBUNWIND := 1
NO_PERF_REGS := 0
LIBUNWIND_LIBS = -lunwind -lunwind-x86_64
endif

+# Additional ARCH settings for MIPS
+ifeq ($(ARCH),mips)
+ ARCH_SUPPORTS_LIBUNWIND := 1
+ NO_PERF_REGS := 0
+ LIBUNWIND_LIBS = -lunwind -lunwind-mips
+endif
+
ifeq ($(NO_PERF_REGS),0)
CFLAGS += -DHAVE_PERF_REGS
endif
@@ -204,8 +213,7 @@ ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DLIBELF_MMAP),y)
endif # try-cc
endif # NO_LIBELF

-# There's only x86 (both 32 and 64) support for CFI unwind so far
-ifneq ($(ARCH),x86)
+ifndef ARCH_SUPPORTS_LIBUNWIND
NO_LIBUNWIND := 1
endif

--
1.7.11.7


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