tools/lib/traceevent/Makefile

   1 # trace-cmd version
   2 EP_VERSION = 1
   3 EP_PATCHLEVEL = 1
   4 EP_EXTRAVERSION = 0
   5
   6 # file format version
   7 FILE_VERSION = 6
   8
   9 MAKEFLAGS += --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.
  17 define allow-override
  18   $(if $(or $(findstring environment,$(origin $(1))),\
  19             $(findstring command line,$(origin $(1)))),,\
  20     $(eval $(1) = $(2)))
  21 endef
  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
  27 EXT = -std=gnu99
  28 INSTALL = 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.
  34 DESTDIR ?=
  35 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
  36
  37 prefix ?= /usr/local
  38 bindir_relative = bin
  39 bindir = $(prefix)/$(bindir_relative)
  40 man_dir = $(prefix)/share/man
  41 man_dir_SQ = '$(subst ','\'',$(man_dir))'
  42
  43 export man_dir man_dir_SQ INSTALL
  44 export DESTDIR DESTDIR_SQ
  45
  46 # copy a bit from Linux kbuild
  47
  48 ifeq ("$(origin V)", "command line")
  49   VERBOSE = $(V)
  50 endif
  51 ifndef VERBOSE
  52   VERBOSE = 0
  53 endif
  54
  55 ifeq ("$(origin O)", "command line")
  56   BUILD_OUTPUT := $(O)
  57 endif
  58
  59 ifeq ($(BUILD_SRC),)
  60 ifneq ($(BUILD_OUTPUT),)
  61
  62 define build_output
  63         $(if $(VERBOSE:1=),@)+$(MAKE) -C $(BUILD_OUTPUT)        \
  64         BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1
  65 endef
  66
  67 saved-output := $(BUILD_OUTPUT)
  68 BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd)
  69 $(if $(BUILD_OUTPUT),, \
  70      $(error output directory "$(saved-output)" does not exist))
  71
  72 all: sub-make
  73
  74 $(MAKECMDGOALS): sub-make
  75
  76 sub-make: force
  77         $(call build_output, $(MAKECMDGOALS))
  78
  79
  80 # Leave processing to above invocation of make
  81 skip-makefile := 1
  82
  83 endif # BUILD_OUTPUT
  84 endif # BUILD_SRC
  85
  86 # We process the rest of the Makefile if this is the final invocation of make
  87 ifeq ($(skip-makefile),)
  88
  89 srctree         := $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR))
  90 objtree         := $(CURDIR)
  91 src             := $(srctree)
  92 obj             := $(objtree)
  93
  94 export prefix bindir src obj
  95
  96 # Shell quotes
  97 bindir_SQ = $(subst ','\'',$(bindir))
  98 bindir_relative_SQ = $(subst ','\'',$(bindir_relative))
  99
 100 LIB_FILE = libtraceevent.a libtraceevent.so
 101
 102 CONFIG_INCLUDES =
 103 CONFIG_LIBS     =
 104 CONFIG_FLAGS    =
 105
 106 VERSION         = $(EP_VERSION)
 107 PATCHLEVEL      = $(EP_PATCHLEVEL)
 108 EXTRAVERSION    = $(EP_EXTRAVERSION)
 109
 110 OBJ             = $@
 111 N               =
 112
 113 export Q VERBOSE
 114
 115 EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
 116
 117 INCLUDES = -I. $(CONFIG_INCLUDES)
 118
 119 # Set compile option CFLAGS if not set elsewhere
 120 CFLAGS ?= -g -Wall
 121
 122 # Append required CFLAGS
 123 override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
 124 override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
 125
 126 ifeq ($(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 =
 135 else
 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)$2';
 145 endif
 146
 147 do_fpic_compile =                                       \
 148         ($(print_fpic_compile)                          \
 149         $(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@)
 150
 151 do_app_build =                                          \
 152         ($(print_app_build)                             \
 153         $(CC) $^ -rdynamic -o $@ $(CONFIG_LIBS) $(LIBS))
 154
 155 do_compile_shared_library =                     \
 156         ($(print_shared_lib_compile)            \
 157         $(CC) --shared $^ -o $@)
 158
 159 do_compile_plugin_obj =                         \
 160         ($(print_plugin_obj_compile)            \
 161         $(CC) -c $(CFLAGS) -fPIC -o $@ $<)
 162
 163 do_plugin_build =                               \
 164         ($(print_plugin_build)                  \
 165         $(CC) $(CFLAGS) -shared -nostartfiles -o $@ $<)
 166
 167 do_build_static_lib =                           \
 168         ($(print_static_lib_build)              \
 169         $(RM) $@;  $(AR) rcs $@ $^)
 170
 171
 172 define do_compile
 173         $(print_compile)                                                \
 174         $(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@;
 175 endef
 176
 177 $(obj)/%.o: $(src)/%.c
 178         $(Q)$(call do_compile)
 179
 180 %.o: $(src)/%.c
 181         $(Q)$(call do_compile)
 182
 183 PEVENT_LIB_OBJS = event-parse.o trace-seq.o parse-filter.o parse-utils.o
 184 PEVENT_LIB_OBJS += kbuffer-parse.o
 185
 186 ALL_OBJS = $(PEVENT_LIB_OBJS)
 187
 188 CMD_TARGETS = $(LIB_FILE)
 189
 190 TARGETS = $(CMD_TARGETS)
 191
 192
 193 all: all_cmd
 194
 195 all_cmd: $(CMD_TARGETS)
 196
 197 libtraceevent.so: $(PEVENT_LIB_OBJS)
 198         $(Q)$(do_compile_shared_library)
 199
 200 libtraceevent.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
 206 define 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         ) > $1
 214 endef
 215
 216 define update_version.h
 217         ($(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);
 224 endef
 225
 226 ep_version.h: force
 227         $(Q)$(N)$(call update_version.h)
 228
 229 VERSION_FILES = ep_version.h
 230
 231 define 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);
 239 endef
 240
 241 ## make deps
 242
 243 all_objs := $(sort $(ALL_OBJS))
 244 all_deps := $(all_objs:%.o=.%.d)
 245
 246 # let .d file also depends on the source and header files
 247 define check_deps
 248                 @set -e; $(RM) $@; \
 249                 $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
 250                 sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
 251                 $(RM) $@.$$$$
 252 endef
 253
 254 $(all_deps): .%.d: $(src)/%.c
 255         $(Q)$(call check_deps)
 256
 257 $(all_objs) : %.o : .%.d
 258
 259 dep_includes := $(wildcard $(all_deps))
 260
 261 ifneq ($(dep_includes),)
 262  include $(dep_includes)
 263 endif
 264
 265 ### Detect environment changes
 266 TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):$(ARCH):$(CROSS_COMPILE)
 267
 268 TRACEEVENT-CFLAGS: force
 269         @FLAGS='$(TRACK_CFLAGS)'; \
 270             if test x"$$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
 275 tags:   force
 276         $(RM) tags
 277         find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
 278         --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
 279
 280 TAGS:   force
 281         $(RM) TAGS
 282         find . -name '*.[ch]' | xargs etags \
 283         --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
 284
 285 define 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'
 291 endef
 292
 293 install_lib: all_cmd
 294         $(Q)$(call do_install,$(LIB_FILE),$(bindir_SQ))
 295
 296 install: install_lib
 297
 298 clean:
 299         $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d
 300         $(RM) TRACEEVENT-CFLAGS tags TAGS
 301
 302 endif # skip-makefile
 303
 304 PHONY += force
 305 force:
 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)