linux-kernel - [tip:perf/core] perf tools: Compile perf with libperf-in.o instead of libperf.a

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Message-ID: <tip-d0bfbedad72b74f93b028c26474acba1ba3d73ed@git.kernel.org>
Date:   Fri, 15 Feb 2019 01:47:50 -0800
From:   tip-bot for Jiri Olsa <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     namhyung@...nel.org, tglx@...utronix.de, jolsa@...nel.org,
        linux-kernel@...r.kernel.org, acme@...hat.com,
        peterz@...radead.org, mingo@...nel.org,
        alexander.shishkin@...ux.intel.com, hpa@...or.com
Subject: [tip:perf/core] perf tools: Compile perf with libperf-in.o instead
 of libperf.a

Commit-ID:  d0bfbedad72b74f93b028c26474acba1ba3d73ed
Gitweb:     https://git.kernel.org/tip/d0bfbedad72b74f93b028c26474acba1ba3d73ed
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Wed, 13 Feb 2019 13:32:37 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 14 Feb 2019 15:18:08 -0300

perf tools: Compile perf with libperf-in.o instead of libperf.a

There's no need for perf build to use libperf.a,
we can use directly libperf-in.o.

The libperf.a stays as a target if needed:

  $ make libperf.a
  ...
    CC       util/pmu.o
    CC       util/pmu-flex.o
    LD       util/libperf-in.o
    LD       libperf-in.o
    AR       libperf.a

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/20190213123246.4015-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/Makefile.perf | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index c2ccc54618d1..93de7c7b8007 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -346,7 +346,7 @@ export PERL_PATH
 
 LIB_FILE=$(OUTPUT)libperf.a
 
-PERFLIBS = $(LIB_FILE) $(LIBAPI) $(LIBTRACEEVENT) $(LIBSUBCMD)
+PERFLIBS = $(LIBAPI) $(LIBTRACEEVENT) $(LIBSUBCMD)
 ifndef NO_LIBBPF
   PERFLIBS += $(LIBBPF)
 endif
@@ -549,6 +549,8 @@ JEVENTS_IN    := $(OUTPUT)pmu-events/jevents-in.o
 
 PMU_EVENTS_IN := $(OUTPUT)pmu-events/pmu-events-in.o
 
+LIBPERF_IN := $(OUTPUT)libperf-in.o
+
 export JEVENTS
 
 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
@@ -565,9 +567,12 @@ $(JEVENTS): $(JEVENTS_IN)
 $(PMU_EVENTS_IN): $(JEVENTS) FORCE
 	$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=pmu-events obj=pmu-events
 
-$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
+$(LIBPERF_IN): prepare FORCE
+	$(Q)$(MAKE) $(build)=libperf
+
+$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBPERF_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
 	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS) \
-		$(PERF_IN) $(PMU_EVENTS_IN) $(LIBS) -o $@
+		$(PERF_IN) $(PMU_EVENTS_IN) $(LIBPERF_IN) $(LIBS) -o $@
 
 $(GTK_IN): FORCE
 	$(Q)$(MAKE) $(build)=gtk
@@ -683,11 +688,6 @@ endif
 
 $(patsubst perf-%,%.o,$(PROGRAMS)): $(wildcard */*.h)
 
-LIBPERF_IN := $(OUTPUT)libperf-in.o
-
-$(LIBPERF_IN): prepare FORCE
-	$(Q)$(MAKE) $(build)=libperf
-
 $(LIB_FILE): $(LIBPERF_IN)
 	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIBPERF_IN) $(LIB_OBJS)