Makefile (6206B)
1# SPDX-License-Identifier: GPL-2.0 2 3#MAKEFLAGS += --no-print-directory 4 5 6# Makefiles suck: This macro sets a default value of $(2) for the 7# variable named by $(1), unless the variable has been set by 8# environment or command line. This is necessary for CC and AR 9# because make sets default values, so the simpler ?= approach 10# won't work as expected. 11define allow-override 12 $(if $(or $(findstring environment,$(origin $(1))),\ 13 $(findstring command line,$(origin $(1)))),,\ 14 $(eval $(1) = $(2))) 15endef 16 17# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix. 18$(call allow-override,CC,$(CROSS_COMPILE)gcc) 19$(call allow-override,AR,$(CROSS_COMPILE)ar) 20$(call allow-override,NM,$(CROSS_COMPILE)nm) 21$(call allow-override,PKG_CONFIG,pkg-config) 22 23EXT = -std=gnu99 24INSTALL = install 25 26# Use DESTDIR for installing into a different root directory. 27# This is useful for building a package. The program will be 28# installed in this directory as if it was the root directory. 29# Then the build tool can move it later. 30DESTDIR ?= 31DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' 32 33LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1) 34ifeq ($(LP64), 1) 35 libdir_relative_tmp = lib64 36else 37 libdir_relative_tmp = lib 38endif 39 40libdir_relative ?= $(libdir_relative_tmp) 41prefix ?= /usr/local 42libdir = $(prefix)/$(libdir_relative) 43 44set_plugin_dir := 1 45 46# Set plugin_dir to preffered global plugin location 47# If we install under $HOME directory we go under 48# $(HOME)/.local/lib/traceevent/plugins 49# 50# We dont set PLUGIN_DIR in case we install under $HOME 51# directory, because by default the code looks under: 52# $(HOME)/.local/lib/traceevent/plugins by default. 53# 54ifeq ($(plugin_dir),) 55ifeq ($(prefix),$(HOME)) 56override plugin_dir = $(HOME)/.local/lib/traceevent/plugins 57set_plugin_dir := 0 58else 59override plugin_dir = $(libdir)/traceevent/plugins 60endif 61endif 62 63ifeq ($(set_plugin_dir),1) 64PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)" 65PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))' 66endif 67 68include ../../../scripts/Makefile.include 69 70# copy a bit from Linux kbuild 71 72ifeq ("$(origin V)", "command line") 73 VERBOSE = $(V) 74endif 75ifndef VERBOSE 76 VERBOSE = 0 77endif 78 79ifeq ($(srctree),) 80srctree := $(patsubst %/,%,$(dir $(CURDIR))) 81srctree := $(patsubst %/,%,$(dir $(srctree))) 82srctree := $(patsubst %/,%,$(dir $(srctree))) 83srctree := $(patsubst %/,%,$(dir $(srctree))) 84#$(info Determined 'srctree' to be $(srctree)) 85endif 86 87export prefix libdir src obj 88 89# Shell quotes 90plugin_dir_SQ = $(subst ','\'',$(plugin_dir)) 91 92CONFIG_INCLUDES = 93CONFIG_LIBS = 94CONFIG_FLAGS = 95 96OBJ = $@ 97N = 98 99INCLUDES = -I. -I.. -I $(srctree)/tools/include $(CONFIG_INCLUDES) 100 101# Set compile option CFLAGS 102ifdef EXTRA_CFLAGS 103 CFLAGS := $(EXTRA_CFLAGS) 104else 105 CFLAGS := -g -Wall 106endif 107 108# Append required CFLAGS 109override CFLAGS += -fPIC 110override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ) 111override CFLAGS += $(udis86-flags) -D_GNU_SOURCE 112 113ifeq ($(VERBOSE),1) 114 Q = 115else 116 Q = @ 117endif 118 119# Disable command line variables (CFLAGS) override from top 120# level Makefile (perf), otherwise build Makefile will get 121# the same command line setup. 122MAKEOVERRIDES= 123 124export srctree OUTPUT CC LD CFLAGS V 125 126build := -f $(srctree)/tools/build/Makefile.build dir=. obj 127 128DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list 129 130PLUGINS = plugin_jbd2.so 131PLUGINS += plugin_hrtimer.so 132PLUGINS += plugin_kmem.so 133PLUGINS += plugin_kvm.so 134PLUGINS += plugin_mac80211.so 135PLUGINS += plugin_sched_switch.so 136PLUGINS += plugin_function.so 137PLUGINS += plugin_futex.so 138PLUGINS += plugin_xen.so 139PLUGINS += plugin_scsi.so 140PLUGINS += plugin_cfg80211.so 141PLUGINS += plugin_tlb.so 142 143PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS)) 144PLUGINS_IN := $(PLUGINS:.so=-in.o) 145 146plugins: $(PLUGINS) $(DYNAMIC_LIST_FILE) 147 148__plugin_obj = $(notdir $@) 149 plugin_obj = $(__plugin_obj:-in.o=) 150 151$(PLUGINS_IN): force 152 $(Q)$(MAKE) $(build)=$(plugin_obj) 153 154$(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS) 155 $(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@) 156 157$(OUTPUT)%.so: $(OUTPUT)%-in.o 158 $(QUIET_LINK)$(CC) $(CFLAGS) -shared $(LDFLAGS) -nostartfiles -o $@ $^ 159 160define update_dir 161 (echo $1 > $@.tmp; \ 162 if [ -r $@ ] && cmp -s $@ $@.tmp; then \ 163 rm -f $@.tmp; \ 164 else \ 165 echo ' UPDATE $@'; \ 166 mv -f $@.tmp $@; \ 167 fi); 168endef 169 170tags: force 171 $(RM) tags 172 find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \ 173 --regex-c++='/_PE\(([^,)]*).*/TEP_ERRNO__\1/' 174 175TAGS: force 176 $(RM) TAGS 177 find . -name '*.[ch]' | xargs etags \ 178 --regex='/_PE(\([^,)]*\).*/TEP_ERRNO__\1/' 179 180define do_install_mkdir 181 if [ ! -d '$(DESTDIR_SQ)$1' ]; then \ 182 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \ 183 fi 184endef 185 186define do_install 187 $(call do_install_mkdir,$2); \ 188 $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2' 189endef 190 191define do_install_plugins 192 for plugin in $1; do \ 193 $(call do_install,$$plugin,$(plugin_dir_SQ)); \ 194 done 195endef 196 197define do_generate_dynamic_list_file 198 symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \ 199 xargs echo "U w W" | tr 'w ' 'W\n' | sort -u | xargs echo`;\ 200 if [ "$$symbol_type" = "U W" ];then \ 201 (echo '{'; \ 202 $(NM) -u -D $1 | awk 'NF>1 {sub("@.*", "", $$2); print "\t"$$2";"}' | sort -u;\ 203 echo '};'; \ 204 ) > $2; \ 205 else \ 206 (echo Either missing one of [$1] or bad version of $(NM)) 1>&2;\ 207 fi 208endef 209 210install: $(PLUGINS) 211 $(call QUIET_INSTALL, trace_plugins) \ 212 $(call do_install_plugins, $(PLUGINS)) 213 214clean: 215 $(call QUIET_CLEAN, trace_plugins) \ 216 $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd; \ 217 $(RM) $(OUTPUT)libtraceevent-dynamic-list \ 218 $(RM) TRACEEVENT-CFLAGS tags TAGS; 219 220PHONY += force plugins 221force: 222 223# Declare the contents of the .PHONY variable as phony. We keep that 224# information in a variable so we can use it in if_changed and friends. 225.PHONY: $(PHONY)