[PATCH 34/36] tools lib traceevent: Use tools build framework

From: Jiri Olsa
Date: Thu Jan 15 2015 - 07:58:47 EST

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Move the libtraceevent library building under tools
build framework.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexis Berlemont <alexis.berlemont@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
tools/lib/traceevent/Build | 17 +++++
tools/lib/traceevent/Makefile | 161 ++++++++++--------------------------------
tools/perf/Makefile.perf | 10 +--
3 files changed, 59 insertions(+), 129 deletions(-)
create mode 100644 tools/lib/traceevent/Build

diff --git a/tools/lib/traceevent/Build b/tools/lib/traceevent/Build
new file mode 100644
index 000000000000..c681d0575d16
--- /dev/null
+++ b/tools/lib/traceevent/Build
@@ -0,0 +1,17 @@
+libtraceevent-y += event-parse.o
+libtraceevent-y += event-plugin.o
+libtraceevent-y += trace-seq.o
+libtraceevent-y += parse-filter.o
+libtraceevent-y += parse-utils.o
+libtraceevent-y += kbuffer-parse.o
+
+plugin_jbd2-y += plugin_jbd2.o
+plugin_hrtimer-y += plugin_hrtimer.o
+plugin_kmem-y += plugin_kmem.o
+plugin_kvm-y += plugin_kvm.o
+plugin_mac80211-y += plugin_mac80211.o
+plugin_sched_switch-y += plugin_sched_switch.o
+plugin_function-y += plugin_function.o
+plugin_xen-y += plugin_xen.o
+plugin_scsi-y += plugin_scsi.o
+plugin_cfg80211-y += plugin_cfg80211.o
diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index 005c9cc06935..8c44ece033d9 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -67,7 +67,7 @@ PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)"
PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))'
endif

-include $(if $(BUILD_SRC),$(BUILD_SRC)/)../../scripts/Makefile.include
+include ../../scripts/Makefile.include

# copy a bit from Linux kbuild

@@ -78,40 +78,13 @@ ifndef VERBOSE
VERBOSE = 0
endif

-ifeq ("$(origin O)", "command line")
- BUILD_OUTPUT := $(O)
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+#$(info Determined 'srctree' to be $(srctree))
endif

-ifeq ($(BUILD_SRC),)
-ifneq ($(OUTPUT),)
-
-define build_output
- $(if $(VERBOSE:1=),@)+$(MAKE) -C $(OUTPUT) \
- BUILD_SRC=$(CURDIR)/ -f $(CURDIR)/Makefile $1
-endef
-
-all: sub-make
-
-$(MAKECMDGOALS): sub-make
-
-sub-make: force
- $(call build_output, $(MAKECMDGOALS))
-
-
-# Leave processing to above invocation of make
-skip-makefile := 1
-
-endif # OUTPUT
-endif # BUILD_SRC
-
-# We process the rest of the Makefile if this is the final invocation of make
-ifeq ($(skip-makefile),)
-
-srctree := $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR))
-objtree := $(CURDIR)
-src := $(srctree)
-obj := $(objtree)
-
export prefix bindir src obj

# Shell quotes
@@ -132,16 +105,15 @@ EXTRAVERSION = $(EP_EXTRAVERSION)
OBJ = $@
N =

-export Q VERBOSE
-
EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)

-INCLUDES = -I. -I $(srctree)/../../include $(CONFIG_INCLUDES)
+INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)

# Set compile option CFLAGS if not set elsewhere
CFLAGS ?= -g -Wall

# Append required CFLAGS
+override CFLAGS += -fPIC
override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
override CFLAGS += $(udis86-flags) -D_GNU_SOURCE

@@ -151,74 +123,58 @@ else
Q = @
endif

-do_compile_shared_library = \
- ($(print_shared_lib_compile) \
- $(CC) --shared $^ -o $@)
-
-do_plugin_build = \
- ($(print_plugin_build) \
- $(CC) $(CFLAGS) -shared -nostartfiles -o $@ $<)
-
-do_build_static_lib = \
- ($(print_static_lib_build) \
- $(RM) $@; $(AR) rcs $@ $^)
-
-
-do_compile = $(QUIET_CC)$(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@;
-
-$(obj)/%.o: $(src)/%.c
- $(call do_compile)
+# Disable command line variables (CFLAGS) overide from top
+# level Makefile (perf), otherwise build Makefile will get
+# the same command line setup.
+MAKEOVERRIDES=

-%.o: $(src)/%.c
- $(call do_compile)
+export srctree OUTPUT CC LD CFLAGS V
+build := -f $(srctree)/tools/build/Makefile.build dir=. obj

-PEVENT_LIB_OBJS = event-parse.o
-PEVENT_LIB_OBJS += event-plugin.o
-PEVENT_LIB_OBJS += trace-seq.o
-PEVENT_LIB_OBJS += parse-filter.o
-PEVENT_LIB_OBJS += parse-utils.o
-PEVENT_LIB_OBJS += kbuffer-parse.o
+PLUGINS = plugin_jbd2.so
+PLUGINS += plugin_hrtimer.so
+PLUGINS += plugin_kmem.so
+PLUGINS += plugin_kvm.so
+PLUGINS += plugin_mac80211.so
+PLUGINS += plugin_sched_switch.so
+PLUGINS += plugin_function.so
+PLUGINS += plugin_xen.so
+PLUGINS += plugin_scsi.so
+PLUGINS += plugin_cfg80211.so

-PLUGIN_OBJS = plugin_jbd2.o
-PLUGIN_OBJS += plugin_hrtimer.o
-PLUGIN_OBJS += plugin_kmem.o
-PLUGIN_OBJS += plugin_kvm.o
-PLUGIN_OBJS += plugin_mac80211.o
-PLUGIN_OBJS += plugin_sched_switch.o
-PLUGIN_OBJS += plugin_function.o
-PLUGIN_OBJS += plugin_xen.o
-PLUGIN_OBJS += plugin_scsi.o
-PLUGIN_OBJS += plugin_cfg80211.o
+PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS))
+PLUGINS_IN := $(PLUGINS:.so=-in.o)

-PLUGINS := $(PLUGIN_OBJS:.o=.so)
-
-ALL_OBJS = $(PEVENT_LIB_OBJS) $(PLUGIN_OBJS)
+TE_IN := $(OUTPUT)libtraceevent-in.o
+LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))

CMD_TARGETS = $(LIB_FILE) $(PLUGINS)

TARGETS = $(CMD_TARGETS)

-
all: all_cmd

all_cmd: $(CMD_TARGETS)

-libtraceevent.so: $(PEVENT_LIB_OBJS)
+$(TE_IN): force
+ $(Q)$(MAKE) $(build)=libtraceevent
+
+$(OUTPUT)libtraceevent.so: $(TE_IN)
$(QUIET_LINK)$(CC) --shared $^ -o $@

-libtraceevent.a: $(PEVENT_LIB_OBJS)
+$(OUTPUT)libtraceevent.a: $(TE_IN)
$(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^

plugins: $(PLUGINS)

-$(PEVENT_LIB_OBJS): %.o: $(src)/%.c TRACEEVENT-CFLAGS
- $(QUIET_CC_FPIC)$(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@
+__plugin_obj = $(notdir $@)
+ plugin_obj = $(__plugin_obj:-in.o=)

-$(PLUGIN_OBJS): %.o : $(src)/%.c
- $(QUIET_CC_FPIC)$(CC) -c $(CFLAGS) -fPIC -o $@ $<
+$(PLUGINS_IN): force
+ $(Q)$(MAKE) $(build)=$(plugin_obj)

-$(PLUGINS): %.so: %.o
- $(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $<
+$(OUTPUT)%.so: $(OUTPUT)%-in.o
+ $(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $^

define make_version.h
(echo '/* This file is automatically generated. Do not modify. */'; \
@@ -255,40 +211,6 @@ define update_dir
fi);
endef

-## make deps
-
-all_objs := $(sort $(ALL_OBJS))
-all_deps := $(all_objs:%.o=.%.d)
-
-# let .d file also depends on the source and header files
-define check_deps
- @set -e; $(RM) $@; \
- $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
- sed 's,$$*$\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
- $(RM) $@.$$$$
-endef
-
-$(all_deps): .%.d: $(src)/%.c
- $(Q)$(call check_deps)
-
-$(all_objs) : %.o : .%.d
-
-dep_includes := $(wildcard $(all_deps))
-
-ifneq ($(dep_includes),)
- include $(dep_includes)
-endif
-
-### Detect environment changes
-TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):$(ARCH):$(CROSS_COMPILE)
-
-TRACEEVENT-CFLAGS: force
- @FLAGS='$(TRACK_CFLAGS)'; \
- if test x"$$FLAGS" != x"`cat TRACEEVENT-CFLAGS 2>/dev/null`" ; then \
- echo 1>&2 " FLAGS: * new build flags or cross compiler"; \
- echo "$$FLAGS" >TRACEEVENT-CFLAGS; \
- fi
-
tags: force
$(RM) tags
find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
@@ -327,14 +249,9 @@ clean:
$(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d \
$(RM) TRACEEVENT-CFLAGS tags TAGS

-endif # skip-makefile
-
PHONY += force plugins
force:

-plugins:
- @echo > /dev/null
-
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable so we can use it in if_changed and friends.
.PHONY: $(PHONY)
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 0f2e021ffa1f..6b6bef8a515a 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -358,22 +358,18 @@ $(LIBPERF_IN): FORCE
$(LIB_FILE): $(LIBPERF_IN)
$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIBPERF_IN) $(LIB_OBJS)

-# libtraceevent.a
-TE_SOURCES = $(wildcard $(TRACE_EVENT_DIR)*.[ch])
-
-LIBTRACEEVENT_FLAGS = $(QUIET_SUBDIR1) O=$(OUTPUT)
LIBTRACEEVENT_FLAGS += CFLAGS="-g -Wall $(EXTRA_CFLAGS)"
LIBTRACEEVENT_FLAGS += plugin_dir=$(plugindir_SQ)

-$(LIBTRACEEVENT): $(TE_SOURCES)
- $(QUIET_SUBDIR0)$(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) libtraceevent.a plugins
+$(LIBTRACEEVENT): FORCE
+ @$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent.a plugins

$(LIBTRACEEVENT)-clean:
$(call QUIET_CLEAN, libtraceevent)
@$(MAKE) -C $(TRACE_EVENT_DIR) O=$(OUTPUT) clean >/dev/null

install-traceevent-plugins: $(LIBTRACEEVENT)
- $(QUIET_SUBDIR0)$(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) install_plugins
+ @$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) install_plugins

$(LIBAPIKFS): FORCE
@$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) $(OUTPUT)libapi.a
--
1.9.3

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Next message: Jiri Olsa: "[PATCH 35/36] tools lib lockdep: Use tools build framework"
Previous message: Jiri Olsa: "[PATCH 30/36] perf build: Remove PERF-CFLAGS file"
In reply to: Jiri Olsa: "[PATCH 30/36] perf build: Remove PERF-CFLAGS file"
Next in thread: Jiri Olsa: "[PATCH 35/36] tools lib lockdep: Use tools build framework"
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