perf build: Add perf regs objects building

Move the regs objects building under build framework to be included in
the libperf build object.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-hgny792g5x5iaklc34aa57uh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 4705fa9..7daccac 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -349,13 +349,6 @@
 		$(INSTALL) $(OUTPUT)libperf-gtk.so '$(DESTDIR_SQ)$(libdir_SQ)'
 endif
 
-ifeq ($(NO_PERF_REGS),0)
-  ifeq ($(ARCH),x86)
-    LIB_H += arch/x86/include/perf_regs.h
-  endif
-  LIB_OBJS += $(OUTPUT)util/perf_regs.o
-endif
-
 ifndef NO_ZLIB
   LIB_OBJS += $(OUTPUT)util/zlib.o
 endif
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index e92d1a4..2fc4d56 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -48,6 +48,10 @@
   LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
 endif
 
+ifeq ($(NO_PERF_REGS),0)
+  $(call detected,CONFIG_PERF_REGS)
+endif
+
 # So far there's only x86 and arm libdw unwind support merged in perf.
 # Disable it on all other architectures in case libdw unwind
 # support is detected in system. Add supported architectures
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index b0a6542..f698432 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -90,6 +90,8 @@
 
 libperf-y += scripting-engines/
 
+libperf-$(CONFIG_PERF_REGS) += perf_regs.o
+
 CFLAGS_config.o   += -DETC_PERFCONFIG="BUILD_STR($(ETC_PERFCONFIG_SQ))"
 CFLAGS_exec_cmd.o += -DPERF_EXEC_PATH="BUILD_STR($(perfexecdir_SQ))" -DPREFIX="BUILD_STR($(prefix_SQ))"