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)/.local/lib/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 # $(HOME)/.local/lib/traceevent/plugins by default.
  63 #
  64 ifeq ($(plugin_dir),)
  65 ifeq ($(prefix),$(HOME))
  66 override plugin_dir = $(HOME)/.local/lib/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 LIB_INSTALL := $(addprefix $(OUTPUT),$(LIB_INSTALL))
 119
 120 INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
 121
 122 # Set compile option CFLAGS
 123 ifdef EXTRA_CFLAGS
 124   CFLAGS := $(EXTRA_CFLAGS)
 125 else
 126   CFLAGS := -g -Wall
 127 endif
 128
 129 # Append required CFLAGS
 130 override CFLAGS += -fPIC
 131 override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
 132 override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
 133
 134 ifeq ($(VERBOSE),1)
 135   Q =
 136 else
 137   Q = @
 138 endif
 139
 140 # Disable command line variables (CFLAGS) override from top
 141 # level Makefile (perf), otherwise build Makefile will get
 142 # the same command line setup.
 143 MAKEOVERRIDES=
 144
 145 export srctree OUTPUT CC LD CFLAGS V
 146 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
 147
 148 PLUGINS  = plugin_jbd2.so
 149 PLUGINS += plugin_hrtimer.so
 150 PLUGINS += plugin_kmem.so
 151 PLUGINS += plugin_kvm.so
 152 PLUGINS += plugin_mac80211.so
 153 PLUGINS += plugin_sched_switch.so
 154 PLUGINS += plugin_function.so
 155 PLUGINS += plugin_xen.so
 156 PLUGINS += plugin_scsi.so
 157 PLUGINS += plugin_cfg80211.so
 158
 159 PLUGINS    := $(addprefix $(OUTPUT),$(PLUGINS))
 160 PLUGINS_IN := $(PLUGINS:.so=-in.o)
 161
 162 TE_IN      := $(OUTPUT)libtraceevent-in.o
 163 LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
 164 DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list
 165
 166 CMD_TARGETS = $(LIB_TARGET) $(PLUGINS) $(DYNAMIC_LIST_FILE)
 167
 168 TARGETS = $(CMD_TARGETS)
 169
 170 all: all_cmd
 171
 172 all_cmd: $(CMD_TARGETS)
 173
 174 $(TE_IN): force
 175         $(Q)$(MAKE) $(build)=libtraceevent
 176
 177 $(OUTPUT)libtraceevent.so.$(EVENT_PARSE_VERSION): $(TE_IN)
 178         $(QUIET_LINK)$(CC) --shared $^ -Wl,-soname,libtraceevent.so.$(EP_VERSION) -o $@
 179         @ln -sf $(@F) $(OUTPUT)libtraceevent.so
 180         @ln -sf $(@F) $(OUTPUT)libtraceevent.so.$(EP_VERSION)
 181
 182 $(OUTPUT)libtraceevent.a: $(TE_IN)
 183         $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
 184
 185 $(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS)
 186         $(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@)
 187
 188 plugins: $(PLUGINS)
 189
 190 __plugin_obj = $(notdir $@)
 191   plugin_obj = $(__plugin_obj:-in.o=)
 192
 193 $(PLUGINS_IN): force
 194         $(Q)$(MAKE) $(build)=$(plugin_obj)
 195
 196 $(OUTPUT)%.so: $(OUTPUT)%-in.o
 197         $(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $^
 198
 199 define make_version.h
 200   (echo '/* This file is automatically generated. Do not modify. */';           \
 201    echo \#define VERSION_CODE $(shell                                           \
 202    expr $(VERSION) \* 256 + $(PATCHLEVEL));                                     \
 203    echo '#define EXTRAVERSION ' $(EXTRAVERSION);                                \
 204    echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"';  \
 205    echo '#define FILE_VERSION '$(FILE_VERSION);                                 \
 206   ) > $1
 207 endef
 208
 209 define update_version.h
 210   ($(call make_version.h, $@.tmp);              \
 211     if [ -r $@ ] && cmp -s $@ $@.tmp; then      \
 212       rm -f $@.tmp;                             \
 213     else                                        \
 214       echo '  UPDATE                 $@';       \
 215       mv -f $@.tmp $@;                          \
 216     fi);
 217 endef
 218
 219 ep_version.h: force
 220         $(Q)$(N)$(call update_version.h)
 221
 222 VERSION_FILES = ep_version.h
 223
 224 define update_dir
 225   (echo $1 > $@.tmp;                            \
 226    if [ -r $@ ] && cmp -s $@ $@.tmp; then       \
 227      rm -f $@.tmp;                              \
 228    else                                         \
 229      echo '  UPDATE                 $@';        \
 230      mv -f $@.tmp $@;                           \
 231    fi);
 232 endef
 233
 234 tags:   force
 235         $(RM) tags
 236         find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
 237         --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
 238
 239 TAGS:   force
 240         $(RM) TAGS
 241         find . -name '*.[ch]' | xargs etags \
 242         --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
 243
 244 define do_install_mkdir
 245         if [ ! -d '$(DESTDIR_SQ)$1' ]; then             \
 246                 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
 247         fi
 248 endef
 249
 250 define do_install
 251         $(call do_install_mkdir,$2);                    \
 252         $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
 253 endef
 254
 255 define do_install_plugins
 256         for plugin in $1; do                            \
 257           $(call do_install,$$plugin,$(plugin_dir_SQ)); \
 258         done
 259 endef
 260
 261 define do_generate_dynamic_list_file
 262         symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \
 263         xargs echo "U w W" | tr 'w ' 'W\n' | sort -u | xargs echo`;\
 264         if [ "$$symbol_type" = "U W" ];then                             \
 265                 (echo '{';                                              \
 266                 $(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u;\
 267                 echo '};';                                              \
 268                 ) > $2;                                                 \
 269         else                                                            \
 270                 (echo Either missing one of [$1] or bad version of $(NM)) 1>&2;\
 271         fi
 272 endef
 273
 274 install_lib: all_cmd install_plugins
 275         $(call QUIET_INSTALL, $(LIB_TARGET)) \
 276                 $(call do_install_mkdir,$(libdir_SQ)); \
 277                 cp -fpR $(LIB_INSTALL) $(DESTDIR)$(libdir_SQ)
 278
 279 install_plugins: $(PLUGINS)
 280         $(call QUIET_INSTALL, trace_plugins) \
 281                 $(call do_install_plugins, $(PLUGINS))
 282
 283 install_headers:
 284         $(call QUIET_INSTALL, headers) \
 285                 $(call do_install,event-parse.h,$(prefix)/include/traceevent,644); \
 286                 $(call do_install,event-utils.h,$(prefix)/include/traceevent,644); \
 287                 $(call do_install,kbuffer.h,$(prefix)/include/traceevent,644)
 288
 289 install: install_lib
 290
 291 clean:
 292         $(call QUIET_CLEAN, libtraceevent) \
 293                 $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd \
 294                 $(RM) TRACEEVENT-CFLAGS tags TAGS
 295
 296 PHONY += force plugins
 297 force:
 298
 299 # Declare the contents of the .PHONY variable as phony.  We keep that
 300 # information in a variable so we can use it in if_changed and friends.
 301 .PHONY: $(PHONY)