1# trace-cmd version
  2EP_VERSION = 1
  3EP_PATCHLEVEL = 1
  4EP_EXTRAVERSION = 0
  5
  6# file format version
  7FILE_VERSION = 6
  8
  9MAKEFLAGS += --no-print-directory
 10
 11
 12# Makefiles suck: This macro sets a default value of $(2) for the
 13# variable named by $(1), unless the variable has been set by
 14# environment or command line. This is necessary for CC and AR
 15# because make sets default values, so the simpler ?= approach
 16# won't work as expected.
 17define allow-override
 18  $(if $(or $(findstring environment,$(origin $(1))),\
 19            $(findstring command line,$(origin $(1)))),,\
 20    $(eval $(1) = $(2)))
 21endef
 22
 23# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
 24$(call allow-override,CC,$(CROSS_COMPILE)gcc)
 25$(call allow-override,AR,$(CROSS_COMPILE)ar)
 26$(call allow-override,NM,$(CROSS_COMPILE)nm)
 27
 28EXT = -std=gnu99
 29INSTALL = install
 30
 31# Use DESTDIR for installing into a different root directory.
 32# This is useful for building a package. The program will be
 33# installed in this directory as if it was the root directory.
 34# Then the build tool can move it later.
 35DESTDIR ?=
 36DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
 37
 38LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
 39ifeq ($(LP64), 1)
 40  libdir_relative = lib64
 41else
 42  libdir_relative = lib
 43endif
 44
 45prefix ?= /usr/local
 46libdir = $(prefix)/$(libdir_relative)
 47man_dir = $(prefix)/share/man
 48man_dir_SQ = '$(subst ','\'',$(man_dir))'
 49
 50export man_dir man_dir_SQ INSTALL
 51export DESTDIR DESTDIR_SQ
 52
 53set_plugin_dir := 1
 54
 55# Set plugin_dir to preffered global plugin location
 56# If we install under $HOME directory we go under
 57# $(HOME)/.traceevent/plugins
 58#
 59# We dont set PLUGIN_DIR in case we install under $HOME
 60# directory, because by default the code looks under:
 61# $(HOME)/.traceevent/plugins by default.
 62#
 63ifeq ($(plugin_dir),)
 64ifeq ($(prefix),$(HOME))
 65override plugin_dir = $(HOME)/.traceevent/plugins
 66set_plugin_dir := 0
 67else
 68override plugin_dir = $(libdir)/traceevent/plugins
 69endif
 70endif
 71
 72ifeq ($(set_plugin_dir),1)
 73PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)"
 74PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))'
 75endif
 76
 77include ../../scripts/Makefile.include
 78
 79# copy a bit from Linux kbuild
 80
 81ifeq ("$(origin V)", "command line")
 82  VERBOSE = $(V)
 83endif
 84ifndef VERBOSE
 85  VERBOSE = 0
 86endif
 87
 88ifeq ($(srctree),)
 89srctree := $(patsubst %/,%,$(dir $(shell pwd)))
 90srctree := $(patsubst %/,%,$(dir $(srctree)))
 91srctree := $(patsubst %/,%,$(dir $(srctree)))
 92#$(info Determined 'srctree' to be $(srctree))
 93endif
 94
 95export prefix libdir src obj
 96
 97# Shell quotes
 98libdir_SQ = $(subst ','\'',$(libdir))
 99libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
100plugin_dir_SQ = $(subst ','\'',$(plugin_dir))
101
102LIB_FILE = libtraceevent.a libtraceevent.so
103
104CONFIG_INCLUDES = 
105CONFIG_LIBS	=
106CONFIG_FLAGS	=
107
108VERSION		= $(EP_VERSION)
109PATCHLEVEL	= $(EP_PATCHLEVEL)
110EXTRAVERSION	= $(EP_EXTRAVERSION)
111
112OBJ		= $@
113N		=
114
115EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
116
117INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
118
119# Set compile option CFLAGS
120ifdef EXTRA_CFLAGS
121  CFLAGS := $(EXTRA_CFLAGS)
122else
123  CFLAGS := -g -Wall
124endif
125
126# Append required CFLAGS
127override CFLAGS += -fPIC
128override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
129override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
130
131ifeq ($(VERBOSE),1)
132  Q =
133else
134  Q = @
135endif
136
137# Disable command line variables (CFLAGS) overide from top
138# level Makefile (perf), otherwise build Makefile will get
139# the same command line setup.
140MAKEOVERRIDES=
141
142export srctree OUTPUT CC LD CFLAGS V
143build := -f $(srctree)/tools/build/Makefile.build dir=. obj
144
145PLUGINS  = plugin_jbd2.so
146PLUGINS += plugin_hrtimer.so
147PLUGINS += plugin_kmem.so
148PLUGINS += plugin_kvm.so
149PLUGINS += plugin_mac80211.so
150PLUGINS += plugin_sched_switch.so
151PLUGINS += plugin_function.so
152PLUGINS += plugin_xen.so
153PLUGINS += plugin_scsi.so
154PLUGINS += plugin_cfg80211.so
155
156PLUGINS    := $(addprefix $(OUTPUT),$(PLUGINS))
157PLUGINS_IN := $(PLUGINS:.so=-in.o)
158
159TE_IN    := $(OUTPUT)libtraceevent-in.o
160LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
161DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list
162
163CMD_TARGETS = $(LIB_FILE) $(PLUGINS) $(DYNAMIC_LIST_FILE)
164
165TARGETS = $(CMD_TARGETS)
166
167all: all_cmd
168
169all_cmd: $(CMD_TARGETS)
170
171$(TE_IN): force
172	$(Q)$(MAKE) $(build)=libtraceevent
173
174$(OUTPUT)libtraceevent.so: $(TE_IN)
175	$(QUIET_LINK)$(CC) --shared $^ -o $@
176
177$(OUTPUT)libtraceevent.a: $(TE_IN)
178	$(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
179
180$(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS)
181	$(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@)
182
183plugins: $(PLUGINS)
184
185__plugin_obj = $(notdir $@)
186  plugin_obj = $(__plugin_obj:-in.o=)
187
188$(PLUGINS_IN): force
189	$(Q)$(MAKE) $(build)=$(plugin_obj)
190
191$(OUTPUT)%.so: $(OUTPUT)%-in.o
192	$(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $^
193
194define make_version.h
195  (echo '/* This file is automatically generated. Do not modify. */';		\
196   echo \#define VERSION_CODE $(shell						\
197   expr $(VERSION) \* 256 + $(PATCHLEVEL));					\
198   echo '#define EXTRAVERSION ' $(EXTRAVERSION);				\
199   echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"';	\
200   echo '#define FILE_VERSION '$(FILE_VERSION);					\
201  ) > $1
202endef
203
204define update_version.h
205  ($(call make_version.h, $@.tmp);		\
206    if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
207      rm -f $@.tmp;				\
208    else					\
209      echo '  UPDATE                 $@';	\
210      mv -f $@.tmp $@;				\
211    fi);
212endef
213
214ep_version.h: force
215	$(Q)$(N)$(call update_version.h)
216
217VERSION_FILES = ep_version.h
218
219define update_dir
220  (echo $1 > $@.tmp;				\
221   if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
222     rm -f $@.tmp;				\
223   else						\
224     echo '  UPDATE                 $@';	\
225     mv -f $@.tmp $@;				\
226   fi);
227endef
228
229tags:	force
230	$(RM) tags
231	find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
232	--regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
233
234TAGS:	force
235	$(RM) TAGS
236	find . -name '*.[ch]' | xargs etags \
237	--regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
238
239define do_install
240	if [ ! -d '$(DESTDIR_SQ)$2' ]; then		\
241		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2';	\
242	fi;						\
243	$(INSTALL) $1 '$(DESTDIR_SQ)$2'
244endef
245
246define do_install_plugins
247	for plugin in $1; do				\
248	  $(call do_install,$$plugin,$(plugin_dir_SQ));	\
249	done
250endef
251
252define do_generate_dynamic_list_file
253	(echo '{';							\
254	$(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u;	\
255	echo '};';							\
256	) > $2
257endef
258
259install_lib: all_cmd install_plugins
260	$(call QUIET_INSTALL, $(LIB_FILE)) \
261		$(call do_install,$(LIB_FILE),$(libdir_SQ))
262
263install_plugins: $(PLUGINS)
264	$(call QUIET_INSTALL, trace_plugins) \
265		$(call do_install_plugins, $(PLUGINS))
266
267install: install_lib
268
269clean:
270	$(call QUIET_CLEAN, libtraceevent) \
271		$(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd \
272		$(RM) TRACEEVENT-CFLAGS tags TAGS
273
274PHONY += force plugins
275force:
276
277# Declare the contents of the .PHONY variable as phony.  We keep that
278# information in a variable so we can use it in if_changed and friends.
279.PHONY: $(PHONY)