1# SPDX-License-Identifier: GPL-2.0
2# trace-cmd version
3EP_VERSION = 1
4EP_PATCHLEVEL = 1
5EP_EXTRAVERSION = 0
6
7# file format version
8FILE_VERSION = 6
9
10MAKEFLAGS += --no-print-directory
11
12
13# Makefiles suck: This macro sets a default value of $(2) for the
14# variable named by $(1), unless the variable has been set by
15# environment or command line. This is necessary for CC and AR
16# because make sets default values, so the simpler ?= approach
17# won't work as expected.
18define allow-override
19  $(if $(or $(findstring environment,$(origin $(1))),\
20            $(findstring command line,$(origin $(1)))),,\
21    $(eval $(1) = $(2)))
22endef
23
24# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
25$(call allow-override,CC,$(CROSS_COMPILE)gcc)
26$(call allow-override,AR,$(CROSS_COMPILE)ar)
27$(call allow-override,NM,$(CROSS_COMPILE)nm)
28$(call allow-override,PKG_CONFIG,pkg-config)
29
30EXT = -std=gnu99
31INSTALL = install
32
33# Use DESTDIR for installing into a different root directory.
34# This is useful for building a package. The program will be
35# installed in this directory as if it was the root directory.
36# Then the build tool can move it later.
37DESTDIR ?=
38DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
39
40LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
41ifeq ($(LP64), 1)
42  libdir_relative_temp = lib64
43else
44  libdir_relative_temp = lib
45endif
46
47libdir_relative ?= $(libdir_relative_temp)
48prefix ?= /usr/local
49libdir = $(prefix)/$(libdir_relative)
50man_dir = $(prefix)/share/man
51man_dir_SQ = '$(subst ','\'',$(man_dir))'
52pkgconfig_dir ?= $(word 1,$(shell $(PKG_CONFIG) 		\
53			--variable pc_path pkg-config | tr ":" " "))
54includedir_relative = traceevent
55includedir = $(prefix)/include/$(includedir_relative)
56includedir_SQ = '$(subst ','\'',$(includedir))'
57
58export man_dir man_dir_SQ INSTALL
59export DESTDIR DESTDIR_SQ
60export EVENT_PARSE_VERSION
61
62include ../../scripts/Makefile.include
63
64# copy a bit from Linux kbuild
65
66ifeq ("$(origin V)", "command line")
67  VERBOSE = $(V)
68endif
69ifndef VERBOSE
70  VERBOSE = 0
71endif
72
73ifeq ($(srctree),)
74srctree := $(patsubst %/,%,$(dir $(CURDIR)))
75srctree := $(patsubst %/,%,$(dir $(srctree)))
76srctree := $(patsubst %/,%,$(dir $(srctree)))
77#$(info Determined 'srctree' to be $(srctree))
78endif
79
80export prefix libdir src obj
81
82# Shell quotes
83libdir_SQ = $(subst ','\'',$(libdir))
84libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
85
86CONFIG_INCLUDES = 
87CONFIG_LIBS	=
88CONFIG_FLAGS	=
89
90VERSION		= $(EP_VERSION)
91PATCHLEVEL	= $(EP_PATCHLEVEL)
92EXTRAVERSION	= $(EP_EXTRAVERSION)
93
94OBJ		= $@
95N		=
96
97EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
98
99LIB_TARGET  = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION)
100LIB_INSTALL = libtraceevent.a libtraceevent.so*
101LIB_INSTALL := $(addprefix $(OUTPUT),$(LIB_INSTALL))
102
103INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
104
105# Set compile option CFLAGS
106ifdef EXTRA_CFLAGS
107  CFLAGS := $(EXTRA_CFLAGS)
108else
109  CFLAGS := -g -Wall
110endif
111
112# Append required CFLAGS
113override CFLAGS += -fPIC
114override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
115override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
116
117ifeq ($(VERBOSE),1)
118  Q =
119else
120  Q = @
121endif
122
123# Disable command line variables (CFLAGS) override from top
124# level Makefile (perf), otherwise build Makefile will get
125# the same command line setup.
126MAKEOVERRIDES=
127
128export srctree OUTPUT CC LD CFLAGS V
129build := -f $(srctree)/tools/build/Makefile.build dir=. obj
130
131TE_IN      := $(OUTPUT)libtraceevent-in.o
132LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
133
134CMD_TARGETS = $(LIB_TARGET)
135
136TARGETS = $(CMD_TARGETS)
137
138all: all_cmd plugins
139
140all_cmd: $(CMD_TARGETS)
141
142$(TE_IN): force
143	$(Q)$(MAKE) $(build)=libtraceevent
144
145$(OUTPUT)libtraceevent.so.$(EVENT_PARSE_VERSION): $(TE_IN)
146	$(QUIET_LINK)$(CC) --shared $(LDFLAGS) $^ -Wl,-soname,libtraceevent.so.$(EP_VERSION) -o $@
147	@ln -sf $(@F) $(OUTPUT)libtraceevent.so
148	@ln -sf $(@F) $(OUTPUT)libtraceevent.so.$(EP_VERSION)
149
150$(OUTPUT)libtraceevent.a: $(TE_IN)
151	$(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
152
153$(OUTPUT)%.so: $(OUTPUT)%-in.o
154	$(QUIET_LINK)$(CC) $(CFLAGS) -shared $(LDFLAGS) -nostartfiles -o $@ $^
155
156define make_version.h
157  (echo '/* This file is automatically generated. Do not modify. */';		\
158   echo \#define VERSION_CODE $(shell						\
159   expr $(VERSION) \* 256 + $(PATCHLEVEL));					\
160   echo '#define EXTRAVERSION ' $(EXTRAVERSION);				\
161   echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"';	\
162   echo '#define FILE_VERSION '$(FILE_VERSION);					\
163  ) > $1
164endef
165
166define update_version.h
167  ($(call make_version.h, $@.tmp);		\
168    if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
169      rm -f $@.tmp;				\
170    else					\
171      echo '  UPDATE                 $@';	\
172      mv -f $@.tmp $@;				\
173    fi);
174endef
175
176ep_version.h: force
177	$(Q)$(N)$(call update_version.h)
178
179VERSION_FILES = ep_version.h
180
181define update_dir
182  (echo $1 > $@.tmp;				\
183   if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
184     rm -f $@.tmp;				\
185   else						\
186     echo '  UPDATE                 $@';	\
187     mv -f $@.tmp $@;				\
188   fi);
189endef
190
191tags:	force
192	$(RM) tags
193	find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
194	--regex-c++='/_PE\(([^,)]*).*/TEP_ERRNO__\1/'
195
196TAGS:	force
197	$(RM) TAGS
198	find . -name '*.[ch]' | xargs etags \
199	--regex='/_PE(\([^,)]*\).*/TEP_ERRNO__\1/'
200
201define do_install_mkdir
202	if [ ! -d '$(DESTDIR_SQ)$1' ]; then		\
203		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1';	\
204	fi
205endef
206
207define do_install
208	$(call do_install_mkdir,$2);			\
209	$(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
210endef
211
212PKG_CONFIG_SOURCE_FILE = libtraceevent.pc
213PKG_CONFIG_FILE := $(addprefix $(OUTPUT),$(PKG_CONFIG_SOURCE_FILE))
214define do_install_pkgconfig_file
215	if [ -n "${pkgconfig_dir}" ]; then 					\
216		cp -f ${PKG_CONFIG_SOURCE_FILE}.template ${PKG_CONFIG_FILE};	\
217		sed -i "s|INSTALL_PREFIX|${1}|g" ${PKG_CONFIG_FILE}; 		\
218		sed -i "s|LIB_VERSION|${EVENT_PARSE_VERSION}|g" ${PKG_CONFIG_FILE}; \
219		sed -i "s|LIB_DIR|${libdir}|g" ${PKG_CONFIG_FILE}; \
220		sed -i "s|HEADER_DIR|$(includedir)|g" ${PKG_CONFIG_FILE}; \
221		$(call do_install,$(PKG_CONFIG_FILE),$(pkgconfig_dir),644); 	\
222	else 									\
223		(echo Failed to locate pkg-config directory) 1>&2;		\
224	fi
225endef
226
227install_lib: all_cmd install_plugins install_headers install_pkgconfig
228	$(call QUIET_INSTALL, $(LIB_TARGET)) \
229		$(call do_install_mkdir,$(libdir_SQ)); \
230		cp -fpR $(LIB_INSTALL) $(DESTDIR)$(libdir_SQ)
231
232install_pkgconfig:
233	$(call QUIET_INSTALL, $(PKG_CONFIG_FILE)) \
234		$(call do_install_pkgconfig_file,$(prefix))
235
236install_headers:
237	$(call QUIET_INSTALL, headers) \
238		$(call do_install,event-parse.h,$(includedir_SQ),644); \
239		$(call do_install,event-utils.h,$(includedir_SQ),644); \
240		$(call do_install,trace-seq.h,$(includedir_SQ),644); \
241		$(call do_install,kbuffer.h,$(includedir_SQ),644)
242
243install: install_lib
244
245clean: clean_plugins
246	$(call QUIET_CLEAN, libtraceevent) \
247		$(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd; \
248		$(RM) TRACEEVENT-CFLAGS tags TAGS; \
249		$(RM) $(PKG_CONFIG_FILE)
250
251PHONY += doc
252doc:
253	$(call descend,Documentation)
254
255PHONY += doc-clean
256doc-clean:
257	$(call descend,Documentation,clean)
258
259PHONY += doc-install
260doc-install:
261	$(call descend,Documentation,install)
262
263PHONY += doc-uninstall
264doc-uninstall:
265	$(call descend,Documentation,uninstall)
266
267PHONY += help
268help:
269	@echo 'Possible targets:'
270	@echo''
271	@echo '  all                 - default, compile the library and the'\
272				      'plugins'
273	@echo '  plugins             - compile the plugins'
274	@echo '  install             - install the library, the plugins,'\
275					'the header and pkgconfig files'
276	@echo '  clean               - clean the library and the plugins object files'
277	@echo '  doc                 - compile the documentation files - man'\
278					'and html pages, in the Documentation directory'
279	@echo '  doc-clean           - clean the documentation files'
280	@echo '  doc-install         - install the man pages'
281	@echo '  doc-uninstall       - uninstall the man pages'
282	@echo''
283
284PHONY += plugins
285plugins:
286	$(call descend,plugins)
287
288PHONY += install_plugins
289install_plugins:
290	$(call descend,plugins,install)
291
292PHONY += clean_plugins
293clean_plugins:
294	$(call descend,plugins,clean)
295
296force:
297
298# Declare the contents of the .PHONY variable as phony.  We keep that
299# information in a variable so we can use it in if_changed and friends.
300.PHONY: $(PHONY)
301