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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 $(CURDIR)))
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
102CONFIG_INCLUDES =
103CONFIG_LIBS =
104CONFIG_FLAGS =
105
106VERSION = $(EP_VERSION)
107PATCHLEVEL = $(EP_PATCHLEVEL)
108EXTRAVERSION = $(EP_EXTRAVERSION)
109
110OBJ = $@
111N =
112
113EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
114
115LIB_TARGET = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION)
116LIB_INSTALL = libtraceevent.a libtraceevent.so*
117
118INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
119
120# Set compile option CFLAGS
121ifdef EXTRA_CFLAGS
122 CFLAGS := $(EXTRA_CFLAGS)
123else
124 CFLAGS := -g -Wall
125endif
126
127# Append required CFLAGS
128override CFLAGS += -fPIC
129override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
130override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
131
132ifeq ($(VERBOSE),1)
133 Q =
134else
135 Q = @
136endif
137
138# Disable command line variables (CFLAGS) overide from top
139# level Makefile (perf), otherwise build Makefile will get
140# the same command line setup.
141MAKEOVERRIDES=
142
143export srctree OUTPUT CC LD CFLAGS V
144build := -f $(srctree)/tools/build/Makefile.build dir=. obj
145
146PLUGINS = plugin_jbd2.so
147PLUGINS += plugin_hrtimer.so
148PLUGINS += plugin_kmem.so
149PLUGINS += plugin_kvm.so
150PLUGINS += plugin_mac80211.so
151PLUGINS += plugin_sched_switch.so
152PLUGINS += plugin_function.so
153PLUGINS += plugin_xen.so
154PLUGINS += plugin_scsi.so
155PLUGINS += plugin_cfg80211.so
156
157PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS))
158PLUGINS_IN := $(PLUGINS:.so=-in.o)
159
160TE_IN := $(OUTPUT)libtraceevent-in.o
161LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
162DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list
163
164CMD_TARGETS = $(LIB_TARGET) $(PLUGINS) $(DYNAMIC_LIST_FILE)
165
166TARGETS = $(CMD_TARGETS)
167
168all: all_cmd
169
170all_cmd: $(CMD_TARGETS)
171
172$(TE_IN): force
173 $(Q)$(MAKE) $(build)=libtraceevent
174
175$(OUTPUT)libtraceevent.so.$(EVENT_PARSE_VERSION): $(TE_IN)
176 $(QUIET_LINK)$(CC) --shared $^ -Wl,-soname,libtraceevent.so.$(EP_VERSION) -o $@
177 @ln -sf $(@F) $(OUTPUT)libtraceevent.so
178 @ln -sf $(@F) $(OUTPUT)libtraceevent.so.$(EP_VERSION)
179
180$(OUTPUT)libtraceevent.a: $(TE_IN)
181 $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
182
183$(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS)
184 $(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@)
185
186plugins: $(PLUGINS)
187
188__plugin_obj = $(notdir $@)
189 plugin_obj = $(__plugin_obj:-in.o=)
190
191$(PLUGINS_IN): force
192 $(Q)$(MAKE) $(build)=$(plugin_obj)
193
194$(OUTPUT)%.so: $(OUTPUT)%-in.o
195 $(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $^
196
197define make_version.h
198 (echo '/* This file is automatically generated. Do not modify. */'; \
199 echo \#define VERSION_CODE $(shell \
200 expr $(VERSION) \* 256 + $(PATCHLEVEL)); \
201 echo '#define EXTRAVERSION ' $(EXTRAVERSION); \
202 echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \
203 echo '#define FILE_VERSION '$(FILE_VERSION); \
204 ) > $1
205endef
206
207define update_version.h
208 ($(call make_version.h, $@.tmp); \
209 if [ -r $@ ] && cmp -s $@ $@.tmp; then \
210 rm -f $@.tmp; \
211 else \
212 echo ' UPDATE $@'; \
213 mv -f $@.tmp $@; \
214 fi);
215endef
216
217ep_version.h: force
218 $(Q)$(N)$(call update_version.h)
219
220VERSION_FILES = ep_version.h
221
222define update_dir
223 (echo $1 > $@.tmp; \
224 if [ -r $@ ] && cmp -s $@ $@.tmp; then \
225 rm -f $@.tmp; \
226 else \
227 echo ' UPDATE $@'; \
228 mv -f $@.tmp $@; \
229 fi);
230endef
231
232tags: force
233 $(RM) tags
234 find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
235 --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
236
237TAGS: force
238 $(RM) TAGS
239 find . -name '*.[ch]' | xargs etags \
240 --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
241
242define do_install_mkdir
243 if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
244 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
245 fi
246endef
247
248define do_install
249 $(call do_install_mkdir,$2); \
250 $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
251endef
252
253define do_install_plugins
254 for plugin in $1; do \
255 $(call do_install,$$plugin,$(plugin_dir_SQ)); \
256 done
257endef
258
259define do_generate_dynamic_list_file
260 (echo '{'; \
261 $(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u; \
262 echo '};'; \
263 ) > $2
264endef
265
266install_lib: all_cmd install_plugins
267 $(call QUIET_INSTALL, $(LIB_TARGET)) \
268 $(call do_install_mkdir,$(libdir_SQ)); \
269 cp -fpR $(LIB_INSTALL) $(DESTDIR)$(libdir_SQ)
270
271install_plugins: $(PLUGINS)
272 $(call QUIET_INSTALL, trace_plugins) \
273 $(call do_install_plugins, $(PLUGINS))
274
275install_headers:
276 $(call QUIET_INSTALL, headers) \
277 $(call do_install,event-parse.h,$(prefix)/include/traceevent,644); \
278 $(call do_install,event-utils.h,$(prefix)/include/traceevent,644); \
279 $(call do_install,kbuffer.h,$(prefix)/include/traceevent,644)
280
281install: install_lib
282
283clean:
284 $(call QUIET_CLEAN, libtraceevent) \
285 $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd \
286 $(RM) TRACEEVENT-CFLAGS tags TAGS
287
288PHONY += force plugins
289force:
290
291# Declare the contents of the .PHONY variable as phony. We keep that
292# information in a variable so we can use it in if_changed and friends.
293.PHONY: $(PHONY)