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 $(call allow-override,PKG_CONFIG,pkg-config)
  29
  30 EXT = -std=gnu99
  31 INSTALL = install
  32
  33 # Use DESTDIR for installing into a different root directory.
  34 # This is useful for building a package. The program will be
  35 # installed in this directory as if it was the root directory.
  36 # Then the build tool can move it later.
  37 DESTDIR ?=
  38 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
  39
  40 LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
  41 ifeq ($(LP64), 1)
  42   libdir_relative_temp = lib64
  43 else
  44   libdir_relative_temp = lib
  45 endif
  46
  47 libdir_relative ?= $(libdir_relative_temp)
  48 prefix ?= /usr/local
  49 libdir = $(prefix)/$(libdir_relative)
  50 man_dir = $(prefix)/share/man
  51 man_dir_SQ = '$(subst ','\'',$(man_dir))'
  52 pkgconfig_dir ?= $(word 1,$(shell $(PKG_CONFIG)                 \
  53                         --variable pc_path pkg-config | tr ":" " "))
  54 includedir_relative = traceevent
  55 includedir = $(prefix)/include/$(includedir_relative)
  56 includedir_SQ = '$(subst ','\'',$(includedir))'
  57
  58 export man_dir man_dir_SQ INSTALL
  59 export DESTDIR DESTDIR_SQ
  60 export EVENT_PARSE_VERSION
  61
  62 include ../../scripts/Makefile.include
  63
  64 # copy a bit from Linux kbuild
  65
  66 ifeq ("$(origin V)", "command line")
  67   VERBOSE = $(V)
  68 endif
  69 ifndef VERBOSE
  70   VERBOSE = 0
  71 endif
  72
  73 ifeq ($(srctree),)
  74 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  75 srctree := $(patsubst %/,%,$(dir $(srctree)))
  76 srctree := $(patsubst %/,%,$(dir $(srctree)))
  77 #$(info Determined 'srctree' to be $(srctree))
  78 endif
  79
  80 export prefix libdir src obj
  81
  82 # Shell quotes
  83 libdir_SQ = $(subst ','\'',$(libdir))
  84 libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
  85
  86 CONFIG_INCLUDES =
  87 CONFIG_LIBS     =
  88 CONFIG_FLAGS    =
  89
  90 VERSION         = $(EP_VERSION)
  91 PATCHLEVEL      = $(EP_PATCHLEVEL)
  92 EXTRAVERSION    = $(EP_EXTRAVERSION)
  93
  94 OBJ             = $@
  95 N               =
  96
  97 EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
  98
  99 LIB_TARGET  = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION)
 100 LIB_INSTALL = libtraceevent.a libtraceevent.so*
 101 LIB_INSTALL := $(addprefix $(OUTPUT),$(LIB_INSTALL))
 102
 103 INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
 104
 105 # Set compile option CFLAGS
 106 ifdef EXTRA_CFLAGS
 107   CFLAGS := $(EXTRA_CFLAGS)
 108 else
 109   CFLAGS := -g -Wall
 110 endif
 111
 112 # Append required CFLAGS
 113 override CFLAGS += -fPIC
 114 override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
 115 override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
 116
 117 ifeq ($(VERBOSE),1)
 118   Q =
 119 else
 120   Q = @
 121 endif
 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.
 126 MAKEOVERRIDES=
 127
 128 export srctree OUTPUT CC LD CFLAGS V
 129 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
 130
 131 TE_IN      := $(OUTPUT)libtraceevent-in.o
 132 LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
 133
 134 CMD_TARGETS = $(LIB_TARGET)
 135
 136 TARGETS = $(CMD_TARGETS)
 137
 138 all: all_cmd plugins
 139
 140 all_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
 156 define 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   ) > $1
 164 endef
 165
 166 define update_version.h
 167   ($(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);
 174 endef
 175
 176 ep_version.h: force
 177         $(Q)$(N)$(call update_version.h)
 178
 179 VERSION_FILES = ep_version.h
 180
 181 define 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);
 189 endef
 190
 191 tags:   force
 192         $(RM) tags
 193         find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
 194         --regex-c++='/_PE\(([^,)]*).*/TEP_ERRNO__\1/'
 195
 196 TAGS:   force
 197         $(RM) TAGS
 198         find . -name '*.[ch]' | xargs etags \
 199         --regex='/_PE(\([^,)]*\).*/TEP_ERRNO__\1/'
 200
 201 define do_install_mkdir
 202         if [ ! -d '$(DESTDIR_SQ)$1' ]; then             \
 203                 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
 204         fi
 205 endef
 206
 207 define do_install
 208         $(call do_install_mkdir,$2);                    \
 209         $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
 210 endef
 211
 212 PKG_CONFIG_SOURCE_FILE = libtraceevent.pc
 213 PKG_CONFIG_FILE := $(addprefix $(OUTPUT),$(PKG_CONFIG_SOURCE_FILE))
 214 define 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
 225 endef
 226
 227 install_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
 232 install_pkgconfig:
 233         $(call QUIET_INSTALL, $(PKG_CONFIG_FILE)) \
 234                 $(call do_install_pkgconfig_file,$(prefix))
 235
 236 install_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
 243 install: install_lib
 244
 245 clean: 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
 251 PHONY += doc
 252 doc:
 253         $(call descend,Documentation)
 254
 255 PHONY += doc-clean
 256 doc-clean:
 257         $(call descend,Documentation,clean)
 258
 259 PHONY += doc-install
 260 doc-install:
 261         $(call descend,Documentation,install)
 262
 263 PHONY += doc-uninstall
 264 doc-uninstall:
 265         $(call descend,Documentation,uninstall)
 266
 267 PHONY += help
 268 help:
 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
 284 PHONY += plugins
 285 plugins:
 286         $(call descend,plugins)
 287
 288 PHONY += install_plugins
 289 install_plugins:
 290         $(call descend,plugins,install)
 291
 292 PHONY += clean_plugins
 293 clean_plugins:
 294         $(call descend,plugins,clean)
 295
 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)