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,$(CROSS_COMPILE)ar)
26
27EXT = -std=gnu99
28INSTALL = install
29
30# Use DESTDIR for installing into a different root directory.
31# This is useful for building a package. The program will be
32# installed in this directory as if it was the root directory.
33# Then the build tool can move it later.
34DESTDIR ?=
35DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
36
37prefix ?= /usr/local
38bindir_relative = bin
39bindir = $(prefix)/$(bindir_relative)
40man_dir = $(prefix)/share/man
41man_dir_SQ = '$(subst ','\'',$(man_dir))'
42
43export man_dir man_dir_SQ INSTALL
44export DESTDIR DESTDIR_SQ
45
46# copy a bit from Linux kbuild
47
48ifeq ("$(origin V)", "command line")
49  VERBOSE = $(V)
50endif
51ifndef VERBOSE
52  VERBOSE = 0
53endif
54
55ifeq ("$(origin O)", "command line")
56  BUILD_OUTPUT := $(O)
57endif
58
59ifeq ($(BUILD_SRC),)
60ifneq ($(BUILD_OUTPUT),)
61
62define build_output
63	$(if $(VERBOSE:1=),@)+$(MAKE) -C $(BUILD_OUTPUT) 	\
64	BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1
65endef
66
67saved-output := $(BUILD_OUTPUT)
68BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd)
69$(if $(BUILD_OUTPUT),, \
70     $(error output directory "$(saved-output)" does not exist))
71
72all: sub-make
73
74$(MAKECMDGOALS): sub-make
75
76sub-make: force
77	$(call build_output, $(MAKECMDGOALS))
78
79
80# Leave processing to above invocation of make
81skip-makefile := 1
82
83endif # BUILD_OUTPUT
84endif # BUILD_SRC
85
86# We process the rest of the Makefile if this is the final invocation of make
87ifeq ($(skip-makefile),)
88
89srctree		:= $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR))
90objtree		:= $(CURDIR)
91src		:= $(srctree)
92obj		:= $(objtree)
93
94export prefix bindir src obj
95
96# Shell quotes
97bindir_SQ = $(subst ','\'',$(bindir))
98bindir_relative_SQ = $(subst ','\'',$(bindir_relative))
99
100LIB_FILE = libtraceevent.a libtraceevent.so
101
102CONFIG_INCLUDES = 
103CONFIG_LIBS	=
104CONFIG_FLAGS	=
105
106VERSION		= $(EP_VERSION)
107PATCHLEVEL	= $(EP_PATCHLEVEL)
108EXTRAVERSION	= $(EP_EXTRAVERSION)
109
110OBJ		= $@
111N		=
112
113export Q VERBOSE
114
115EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
116
117INCLUDES = -I. $(CONFIG_INCLUDES)
118
119# Set compile option CFLAGS if not set elsewhere
120CFLAGS ?= -g -Wall
121
122# Append required CFLAGS
123override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
124override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
125
126ifeq ($(VERBOSE),1)
127  Q =
128  print_compile =
129  print_app_build =
130  print_fpic_compile =
131  print_shared_lib_compile =
132  print_plugin_obj_compile =
133  print_plugin_build =
134  print_install =
135else
136  Q = @
137  print_compile =		echo '  CC                 '$(OBJ);
138  print_app_build =		echo '  BUILD              '$(OBJ);
139  print_fpic_compile =		echo '  CC FPIC            '$(OBJ);
140  print_shared_lib_compile =	echo '  BUILD SHARED LIB   '$(OBJ);
141  print_plugin_obj_compile =	echo '  CC PLUGIN OBJ      '$(OBJ);
142  print_plugin_build =		echo '  CC PLUGI           '$(OBJ);
143  print_static_lib_build =	echo '  BUILD STATIC LIB   '$(OBJ);
144  print_install =		echo '  INSTALL     '$1'	to	$(DESTDIR_SQ)$2';
145endif
146
147do_fpic_compile =					\
148	($(print_fpic_compile)				\
149	$(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@)
150
151do_app_build =						\
152	($(print_app_build)				\
153	$(CC) $^ -rdynamic -o $@ $(CONFIG_LIBS) $(LIBS))
154
155do_compile_shared_library =			\
156	($(print_shared_lib_compile)		\
157	$(CC) --shared $^ -o $@)
158
159do_compile_plugin_obj =				\
160	($(print_plugin_obj_compile)		\
161	$(CC) -c $(CFLAGS) -fPIC -o $@ $<)
162
163do_plugin_build =				\
164	($(print_plugin_build)			\
165	$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $<)
166
167do_build_static_lib =				\
168	($(print_static_lib_build)		\
169	$(RM) $@;  $(AR) rcs $@ $^)
170
171
172define do_compile
173	$(print_compile)						\
174	$(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@;
175endef
176
177$(obj)/%.o: $(src)/%.c
178	$(Q)$(call do_compile)
179
180%.o: $(src)/%.c
181	$(Q)$(call do_compile)
182
183PEVENT_LIB_OBJS = event-parse.o trace-seq.o parse-filter.o parse-utils.o
184PEVENT_LIB_OBJS += kbuffer-parse.o
185
186ALL_OBJS = $(PEVENT_LIB_OBJS)
187
188CMD_TARGETS = $(LIB_FILE)
189
190TARGETS = $(CMD_TARGETS)
191
192
193all: all_cmd
194
195all_cmd: $(CMD_TARGETS)
196
197libtraceevent.so: $(PEVENT_LIB_OBJS)
198	$(Q)$(do_compile_shared_library)
199
200libtraceevent.a: $(PEVENT_LIB_OBJS)
201	$(Q)$(do_build_static_lib)
202
203$(PEVENT_LIB_OBJS): %.o: $(src)/%.c TRACEEVENT-CFLAGS
204	$(Q)$(do_fpic_compile)
205
206define make_version.h
207	(echo '/* This file is automatically generated. Do not modify. */';		\
208	echo \#define VERSION_CODE $(shell						\
209	expr $(VERSION) \* 256 + $(PATCHLEVEL));					\
210	echo '#define EXTRAVERSION ' $(EXTRAVERSION);					\
211	echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"';	\
212	echo '#define FILE_VERSION '$(FILE_VERSION);					\
213	) > $1
214endef
215
216define update_version.h
217	($(call make_version.h, $@.tmp);		\
218	if [ -r $@ ] && cmp -s $@ $@.tmp; then		\
219		rm -f $@.tmp;				\
220	else						\
221		echo '  UPDATE                 $@';	\
222		mv -f $@.tmp $@;			\
223	fi);
224endef
225
226ep_version.h: force
227	$(Q)$(N)$(call update_version.h)
228
229VERSION_FILES = ep_version.h
230
231define update_dir
232	(echo $1 > $@.tmp;	\
233	if [ -r $@ ] && cmp -s $@ $@.tmp; then		\
234		rm -f $@.tmp;				\
235	else						\
236		echo '  UPDATE                 $@';	\
237		mv -f $@.tmp $@;			\
238	fi);
239endef
240
241## make deps
242
243all_objs := $(sort $(ALL_OBJS))
244all_deps := $(all_objs:%.o=.%.d)
245
246# let .d file also depends on the source and header files
247define check_deps
248		@set -e; $(RM) $@; \
249		$(CC) -MM $(CFLAGS) $< > $@.$$$$; \
250		sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
251		$(RM) $@.$$$$
252endef
253
254$(all_deps): .%.d: $(src)/%.c
255	$(Q)$(call check_deps)
256
257$(all_objs) : %.o : .%.d
258
259dep_includes := $(wildcard $(all_deps))
260
261ifneq ($(dep_includes),)
262 include $(dep_includes)
263endif
264
265### Detect environment changes
266TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):$(ARCH):$(CROSS_COMPILE)
267
268TRACEEVENT-CFLAGS: force
269	@FLAGS='$(TRACK_CFLAGS)'; \
270	    if test x"$$FLAGS" != x"`cat TRACEEVENT-CFLAGS 2>/dev/null`" ; then \
271		echo 1>&2 "    * new build flags or cross compiler"; \
272		echo "$$FLAGS" >TRACEEVENT-CFLAGS; \
273            fi
274
275tags:	force
276	$(RM) tags
277	find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
278	--regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
279
280TAGS:	force
281	$(RM) TAGS
282	find . -name '*.[ch]' | xargs etags \
283	--regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
284
285define do_install
286	$(print_install)				\
287	if [ ! -d '$(DESTDIR_SQ)$2' ]; then		\
288		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2';	\
289	fi;						\
290	$(INSTALL) $1 '$(DESTDIR_SQ)$2'
291endef
292
293install_lib: all_cmd
294	$(Q)$(call do_install,$(LIB_FILE),$(bindir_SQ))
295
296install: install_lib
297
298clean:
299	$(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d
300	$(RM) TRACEEVENT-CFLAGS tags TAGS
301
302endif # skip-makefile
303
304PHONY += force
305force:
306
307# Declare the contents of the .PHONY variable as phony.  We keep that
308# information in a variable so we can use it in if_changed and friends.
309.PHONY: $(PHONY)
310