tools/lib/traceevent/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 # trace-cmd version
   3 EP_VERSION = 1
   4 EP_PATCHLEVEL = 1
   5 EP_EXTRAVERSION = 0
   6
   7 # file format version
   8 FILE_VERSION = 6
   9
  10 MAKEFLAGS += --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.
  18 define allow-override
  19   $(if $(or $(findstring environment,$(origin $(1))),\
  20             $(findstring command line,$(origin $(1)))),,\
  21     $(eval $(1) = $(2)))
  22 endef
  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
  29 EXT = -std=gnu99
  30 INSTALL = install
  31
  32 # Use DESTDIR for installing into a different root directory.
  33 # This is useful for building a package. The program will be
  34 # installed in this directory as if it was the root directory.
  35 # Then the build tool can move it later.
  36 DESTDIR ?=
  37 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
  38
  39 LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
  40 ifeq ($(LP64), 1)
  41   libdir_relative = lib64
  42 else
  43   libdir_relative = lib
  44 endif
  45
  46 prefix ?= /usr/local
  47 libdir = $(prefix)/$(libdir_relative)
  48 man_dir = $(prefix)/share/man
  49 man_dir_SQ = '$(subst ','\'',$(man_dir))'
  50
  51 export man_dir man_dir_SQ INSTALL
  52 export DESTDIR DESTDIR_SQ
  53
  54 set_plugin_dir := 1
  55
  56 # Set plugin_dir to preffered global plugin location
  57 # If we install under $HOME directory we go under
  58 # $(HOME)/.traceevent/plugins
  59 #
  60 # We dont set PLUGIN_DIR in case we install under $HOME
  61 # directory, because by default the code looks under:
  62 # $(HOME)/.traceevent/plugins by default.
  63 #
  64 ifeq ($(plugin_dir),)
  65 ifeq ($(prefix),$(HOME))
  66 override plugin_dir = $(HOME)/.traceevent/plugins
  67 set_plugin_dir := 0
  68 else
  69 override plugin_dir = $(libdir)/traceevent/plugins
  70 endif
  71 endif
  72
  73 ifeq ($(set_plugin_dir),1)
  74 PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)"
  75 PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))'
  76 endif
  77
  78 include ../../scripts/Makefile.include
  79
  80 # copy a bit from Linux kbuild
  81
  82 ifeq ("$(origin V)", "command line")
  83   VERBOSE = $(V)
  84 endif
  85 ifndef VERBOSE
  86   VERBOSE = 0
  87 endif
  88
  89 ifeq ($(srctree),)
  90 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  91 srctree := $(patsubst %/,%,$(dir $(srctree)))
  92 srctree := $(patsubst %/,%,$(dir $(srctree)))
  93 #$(info Determined 'srctree' to be $(srctree))
  94 endif
  95
  96 export prefix libdir src obj
  97
  98 # Shell quotes
  99 libdir_SQ = $(subst ','\'',$(libdir))
 100 libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
 101 plugin_dir_SQ = $(subst ','\'',$(plugin_dir))
 102
 103 CONFIG_INCLUDES =
 104 CONFIG_LIBS     =
 105 CONFIG_FLAGS    =
 106
 107 VERSION         = $(EP_VERSION)
 108 PATCHLEVEL      = $(EP_PATCHLEVEL)
 109 EXTRAVERSION    = $(EP_EXTRAVERSION)
 110
 111 OBJ             = $@
 112 N               =
 113
 114 EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
 115
 116 LIB_TARGET  = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION)
 117 LIB_INSTALL = libtraceevent.a libtraceevent.so*
 118
 119 INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
 120
 121 # Set compile option CFLAGS
 122 ifdef EXTRA_CFLAGS
 123   CFLAGS := $(EXTRA_CFLAGS)
 124 else
 125   CFLAGS := -g -Wall
 126 endif
 127
 128 # Append required CFLAGS
 129 override CFLAGS += -fPIC
 130 override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
 131 override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
 132
 133 ifeq ($(VERBOSE),1)
 134   Q =
 135 else
 136   Q = @
 137 endif
 138
 139 # Disable command line variables (CFLAGS) override from top
 140 # level Makefile (perf), otherwise build Makefile will get
 141 # the same command line setup.
 142 MAKEOVERRIDES=
 143
 144 export srctree OUTPUT CC LD CFLAGS V
 145 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
 146
 147 PLUGINS  = plugin_jbd2.so
 148 PLUGINS += plugin_hrtimer.so
 149 PLUGINS += plugin_kmem.so
 150 PLUGINS += plugin_kvm.so
 151 PLUGINS += plugin_mac80211.so
 152 PLUGINS += plugin_sched_switch.so
 153 PLUGINS += plugin_function.so
 154 PLUGINS += plugin_xen.so
 155 PLUGINS += plugin_scsi.so
 156 PLUGINS += plugin_cfg80211.so
 157
 158 PLUGINS    := $(addprefix $(OUTPUT),$(PLUGINS))
 159 PLUGINS_IN := $(PLUGINS:.so=-in.o)
 160
 161 TE_IN      := $(OUTPUT)libtraceevent-in.o
 162 LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
 163 DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list
 164
 165 CMD_TARGETS = $(LIB_TARGET) $(PLUGINS) $(DYNAMIC_LIST_FILE)
 166
 167 TARGETS = $(CMD_TARGETS)
 168
 169 all: all_cmd
 170
 171 all_cmd: $(CMD_TARGETS)
 172
 173 $(TE_IN): force
 174         $(Q)$(MAKE) $(build)=libtraceevent
 175
 176 $(OUTPUT)libtraceevent.so.$(EVENT_PARSE_VERSION): $(TE_IN)
 177         $(QUIET_LINK)$(CC) --shared $^ -Wl,-soname,libtraceevent.so.$(EP_VERSION) -o $@
 178         @ln -sf $(@F) $(OUTPUT)libtraceevent.so
 179         @ln -sf $(@F) $(OUTPUT)libtraceevent.so.$(EP_VERSION)
 180
 181 $(OUTPUT)libtraceevent.a: $(TE_IN)
 182         $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
 183
 184 $(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS)
 185         $(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@)
 186
 187 plugins: $(PLUGINS)
 188
 189 __plugin_obj = $(notdir $@)
 190   plugin_obj = $(__plugin_obj:-in.o=)
 191
 192 $(PLUGINS_IN): force
 193         $(Q)$(MAKE) $(build)=$(plugin_obj)
 194
 195 $(OUTPUT)%.so: $(OUTPUT)%-in.o
 196         $(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $^
 197
 198 define make_version.h
 199   (echo '/* This file is automatically generated. Do not modify. */';           \
 200    echo \#define VERSION_CODE $(shell                                           \
 201    expr $(VERSION) \* 256 + $(PATCHLEVEL));                                     \
 202    echo '#define EXTRAVERSION ' $(EXTRAVERSION);                                \
 203    echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"';  \
 204    echo '#define FILE_VERSION '$(FILE_VERSION);                                 \
 205   ) > $1
 206 endef
 207
 208 define update_version.h
 209   ($(call make_version.h, $@.tmp);              \
 210     if [ -r $@ ] && cmp -s $@ $@.tmp; then      \
 211       rm -f $@.tmp;                             \
 212     else                                        \
 213       echo '  UPDATE                 $@';       \
 214       mv -f $@.tmp $@;                          \
 215     fi);
 216 endef
 217
 218 ep_version.h: force
 219         $(Q)$(N)$(call update_version.h)
 220
 221 VERSION_FILES = ep_version.h
 222
 223 define update_dir
 224   (echo $1 > $@.tmp;                            \
 225    if [ -r $@ ] && cmp -s $@ $@.tmp; then       \
 226      rm -f $@.tmp;                              \
 227    else                                         \
 228      echo '  UPDATE                 $@';        \
 229      mv -f $@.tmp $@;                           \
 230    fi);
 231 endef
 232
 233 tags:   force
 234         $(RM) tags
 235         find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
 236         --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
 237
 238 TAGS:   force
 239         $(RM) TAGS
 240         find . -name '*.[ch]' | xargs etags \
 241         --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
 242
 243 define do_install_mkdir
 244         if [ ! -d '$(DESTDIR_SQ)$1' ]; then             \
 245                 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
 246         fi
 247 endef
 248
 249 define do_install
 250         $(call do_install_mkdir,$2);                    \
 251         $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
 252 endef
 253
 254 define do_install_plugins
 255         for plugin in $1; do                            \
 256           $(call do_install,$$plugin,$(plugin_dir_SQ)); \
 257         done
 258 endef
 259
 260 define do_generate_dynamic_list_file
 261         symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \
 262         xargs echo "U W w" | tr ' ' '\n' | sort -u | xargs echo`;\
 263         if [ "$$symbol_type" = "U W w" ];then                           \
 264                 (echo '{';                                              \
 265                 $(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u;\
 266                 echo '};';                                              \
 267                 ) > $2;                                                 \
 268         else                                                            \
 269                 (echo Either missing one of [$1] or bad version of $(NM)) 1>&2;\
 270         fi
 271 endef
 272
 273 install_lib: all_cmd install_plugins
 274         $(call QUIET_INSTALL, $(LIB_TARGET)) \
 275                 $(call do_install_mkdir,$(libdir_SQ)); \
 276                 cp -fpR $(LIB_INSTALL) $(DESTDIR)$(libdir_SQ)
 277
 278 install_plugins: $(PLUGINS)
 279         $(call QUIET_INSTALL, trace_plugins) \
 280                 $(call do_install_plugins, $(PLUGINS))
 281
 282 install_headers:
 283         $(call QUIET_INSTALL, headers) \
 284                 $(call do_install,event-parse.h,$(prefix)/include/traceevent,644); \
 285                 $(call do_install,event-utils.h,$(prefix)/include/traceevent,644); \
 286                 $(call do_install,kbuffer.h,$(prefix)/include/traceevent,644)
 287
 288 install: install_lib
 289
 290 clean:
 291         $(call QUIET_CLEAN, libtraceevent) \
 292                 $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd \
 293                 $(RM) TRACEEVENT-CFLAGS tags TAGS
 294
 295 PHONY += force plugins
 296 force:
 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)