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,$(CROSS_COMPILE)nm) 28 29EXT = -std=gnu99 30INSTALL = install 31 32# Use DESTDIR for installing into a different root directory. 33# This is useful for building a package. The program will be 34# installed in this directory as if it was the root directory. 35# Then the build tool can move it later. 36DESTDIR ?= 37DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' 38 39LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1) 40ifeq ($(LP64), 1) 41 libdir_relative = lib64 42else 43 libdir_relative = lib 44endif 45 46prefix ?= /usr/local 47libdir = $(prefix)/$(libdir_relative) 48man_dir = $(prefix)/share/man 49man_dir_SQ = '$(subst ','\'',$(man_dir))' 50 51export man_dir man_dir_SQ INSTALL 52export DESTDIR DESTDIR_SQ 53 54set_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# $(HOME)/.local/lib/traceevent/plugins by default. 63# 64ifeq ($(plugin_dir),) 65ifeq ($(prefix),$(HOME)) 66override plugin_dir = $(HOME)/.local/lib/traceevent/plugins 67set_plugin_dir := 0 68else 69override plugin_dir = $(libdir)/traceevent/plugins 70endif 71endif 72 73ifeq ($(set_plugin_dir),1) 74PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)" 75PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))' 76endif 77 78include ../../scripts/Makefile.include 79 80# copy a bit from Linux kbuild 81 82ifeq ("$(origin V)", "command line") 83 VERBOSE = $(V) 84endif 85ifndef VERBOSE 86 VERBOSE = 0 87endif 88 89ifeq ($(srctree),) 90srctree := $(patsubst %/,%,$(dir $(CURDIR))) 91srctree := $(patsubst %/,%,$(dir $(srctree))) 92srctree := $(patsubst %/,%,$(dir $(srctree))) 93#$(info Determined 'srctree' to be $(srctree)) 94endif 95 96export prefix libdir src obj 97 98# Shell quotes 99libdir_SQ = $(subst ','\'',$(libdir)) 100libdir_relative_SQ = $(subst ','\'',$(libdir_relative)) 101plugin_dir_SQ = $(subst ','\'',$(plugin_dir)) 102 103CONFIG_INCLUDES = 104CONFIG_LIBS = 105CONFIG_FLAGS = 106 107VERSION = $(EP_VERSION) 108PATCHLEVEL = $(EP_PATCHLEVEL) 109EXTRAVERSION = $(EP_EXTRAVERSION) 110 111OBJ = $@ 112N = 113 114EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION) 115 116LIB_TARGET = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION) 117LIB_INSTALL = libtraceevent.a libtraceevent.so* 118LIB_INSTALL := $(addprefix $(OUTPUT),$(LIB_INSTALL)) 119 120INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES) 121 122# Set compile option CFLAGS 123ifdef EXTRA_CFLAGS 124 CFLAGS := $(EXTRA_CFLAGS) 125else 126 CFLAGS := -g -Wall 127endif 128 129# Append required CFLAGS 130override CFLAGS += -fPIC 131override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ) 132override CFLAGS += $(udis86-flags) -D_GNU_SOURCE 133 134ifeq ($(VERBOSE),1) 135 Q = 136else 137 Q = @ 138endif 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. 143MAKEOVERRIDES= 144 145export srctree OUTPUT CC LD CFLAGS V 146build := -f $(srctree)/tools/build/Makefile.build dir=. obj 147 148PLUGINS = plugin_jbd2.so 149PLUGINS += plugin_hrtimer.so 150PLUGINS += plugin_kmem.so 151PLUGINS += plugin_kvm.so 152PLUGINS += plugin_mac80211.so 153PLUGINS += plugin_sched_switch.so 154PLUGINS += plugin_function.so 155PLUGINS += plugin_xen.so 156PLUGINS += plugin_scsi.so 157PLUGINS += plugin_cfg80211.so 158 159PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS)) 160PLUGINS_IN := $(PLUGINS:.so=-in.o) 161 162TE_IN := $(OUTPUT)libtraceevent-in.o 163LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET)) 164DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list 165 166CMD_TARGETS = $(LIB_TARGET) $(PLUGINS) $(DYNAMIC_LIST_FILE) 167 168TARGETS = $(CMD_TARGETS) 169 170all: all_cmd 171 172all_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 188plugins: $(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 199define 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 ) > $1 207endef 208 209define update_version.h 210 ($(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); 217endef 218 219ep_version.h: force 220 $(Q)$(N)$(call update_version.h) 221 222VERSION_FILES = ep_version.h 223 224define 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); 232endef 233 234tags: force 235 $(RM) tags 236 find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \ 237 --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/' 238 239TAGS: force 240 $(RM) TAGS 241 find . -name '*.[ch]' | xargs etags \ 242 --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/' 243 244define do_install_mkdir 245 if [ ! -d '$(DESTDIR_SQ)$1' ]; then \ 246 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \ 247 fi 248endef 249 250define do_install 251 $(call do_install_mkdir,$2); \ 252 $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2' 253endef 254 255define do_install_plugins 256 for plugin in $1; do \ 257 $(call do_install,$$plugin,$(plugin_dir_SQ)); \ 258 done 259endef 260 261define do_generate_dynamic_list_file 262 symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$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 272endef 273 274install_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 279install_plugins: $(PLUGINS) 280 $(call QUIET_INSTALL, trace_plugins) \ 281 $(call do_install_plugins, $(PLUGINS)) 282 283install_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 289install: install_lib 290 291clean: 292 $(call QUIET_CLEAN, libtraceevent) \ 293 $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd \ 294 $(RM) TRACEEVENT-CFLAGS tags TAGS 295 296PHONY += force plugins 297force: 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) 302