226 lines
6.1 KiB
Makefile
226 lines
6.1 KiB
Makefile
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# SPDX-License-Identifier: GPL-2.0
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#MAKEFLAGS += --no-print-directory
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# Makefiles suck: This macro sets a default value of $(2) for the
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# variable named by $(1), unless the variable has been set by
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# environment or command line. This is necessary for CC and AR
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# because make sets default values, so the simpler ?= approach
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# won't work as expected.
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define allow-override
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$(if $(or $(findstring environment,$(origin $(1))),\
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$(findstring command line,$(origin $(1)))),,\
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$(eval $(1) = $(2)))
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endef
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# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
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$(call allow-override,CC,$(CROSS_COMPILE)gcc)
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$(call allow-override,AR,$(CROSS_COMPILE)ar)
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$(call allow-override,NM,$(CROSS_COMPILE)nm)
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$(call allow-override,PKG_CONFIG,pkg-config)
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EXT = -std=gnu99
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INSTALL = install
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# Use DESTDIR for installing into a different root directory.
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# This is useful for building a package. The program will be
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# installed in this directory as if it was the root directory.
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# Then the build tool can move it later.
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DESTDIR ?=
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DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
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LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
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ifeq ($(LP64), 1)
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libdir_relative_tmp = lib64
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else
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libdir_relative_tmp = lib
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endif
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libdir_relative ?= $(libdir_relative_tmp)
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prefix ?= /usr/local
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libdir = $(prefix)/$(libdir_relative)
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set_plugin_dir := 1
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# Set plugin_dir to preffered global plugin location
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# If we install under $HOME directory we go under
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# $(HOME)/.local/lib/traceevent/plugins
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#
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# We dont set PLUGIN_DIR in case we install under $HOME
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# directory, because by default the code looks under:
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# $(HOME)/.local/lib/traceevent/plugins by default.
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#
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ifeq ($(plugin_dir),)
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ifeq ($(prefix),$(HOME))
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override plugin_dir = $(HOME)/.local/lib/traceevent/plugins
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set_plugin_dir := 0
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else
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override plugin_dir = $(libdir)/traceevent/plugins
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endif
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endif
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ifeq ($(set_plugin_dir),1)
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PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)"
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PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))'
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endif
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include ../../../scripts/Makefile.include
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# copy a bit from Linux kbuild
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ifeq ("$(origin V)", "command line")
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VERBOSE = $(V)
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endif
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ifndef VERBOSE
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VERBOSE = 0
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endif
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ifeq ($(srctree),)
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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#$(info Determined 'srctree' to be $(srctree))
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endif
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export prefix libdir src obj
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# Shell quotes
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plugin_dir_SQ = $(subst ','\'',$(plugin_dir))
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CONFIG_INCLUDES =
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CONFIG_LIBS =
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CONFIG_FLAGS =
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OBJ = $@
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N =
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INCLUDES = -I. -I.. -I $(srctree)/tools/include $(CONFIG_INCLUDES)
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# Set compile option CFLAGS
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ifdef EXTRA_CFLAGS
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CFLAGS := $(EXTRA_CFLAGS)
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else
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CFLAGS := -g -Wall
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endif
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# Append required CFLAGS
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override CFLAGS += -fPIC
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override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
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override CFLAGS += $(udis86-flags) -D_GNU_SOURCE
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ifeq ($(VERBOSE),1)
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Q =
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else
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Q = @
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endif
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# Disable command line variables (CFLAGS) override from top
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# level Makefile (perf), otherwise build Makefile will get
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# the same command line setup.
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MAKEOVERRIDES=
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export srctree OUTPUT CC LD CFLAGS V
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build := -f $(srctree)/tools/build/Makefile.build dir=. obj
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DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list
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PLUGINS = plugin_jbd2.so
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PLUGINS += plugin_hrtimer.so
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PLUGINS += plugin_kmem.so
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PLUGINS += plugin_kvm.so
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PLUGINS += plugin_mac80211.so
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PLUGINS += plugin_sched_switch.so
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PLUGINS += plugin_function.so
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PLUGINS += plugin_futex.so
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PLUGINS += plugin_xen.so
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PLUGINS += plugin_scsi.so
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PLUGINS += plugin_cfg80211.so
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PLUGINS += plugin_tlb.so
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PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS))
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PLUGINS_IN := $(PLUGINS:.so=-in.o)
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plugins: $(PLUGINS) $(DYNAMIC_LIST_FILE)
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__plugin_obj = $(notdir $@)
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plugin_obj = $(__plugin_obj:-in.o=)
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$(PLUGINS_IN): force
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$(Q)$(MAKE) $(build)=$(plugin_obj)
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$(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS)
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$(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@)
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$(OUTPUT)%.so: $(OUTPUT)%-in.o
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$(QUIET_LINK)$(CC) $(CFLAGS) -shared $(LDFLAGS) -nostartfiles -o $@ $^
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define update_dir
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(echo $1 > $@.tmp; \
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if [ -r $@ ] && cmp -s $@ $@.tmp; then \
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rm -f $@.tmp; \
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else \
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echo ' UPDATE $@'; \
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mv -f $@.tmp $@; \
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fi);
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endef
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tags: force
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$(RM) tags
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find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
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--regex-c++='/_PE\(([^,)]*).*/TEP_ERRNO__\1/'
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TAGS: force
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$(RM) TAGS
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find . -name '*.[ch]' | xargs etags \
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--regex='/_PE(\([^,)]*\).*/TEP_ERRNO__\1/'
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define do_install_mkdir
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if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
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$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
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fi
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endef
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define do_install
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$(call do_install_mkdir,$2); \
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$(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
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endef
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define do_install_plugins
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for plugin in $1; do \
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$(call do_install,$$plugin,$(plugin_dir_SQ)); \
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done
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endef
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define do_generate_dynamic_list_file
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symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \
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xargs echo "U w W" | tr 'w ' 'W\n' | sort -u | xargs echo`;\
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if [ "$$symbol_type" = "U W" ];then \
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(echo '{'; \
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$(NM) -u -D $1 | awk 'NF>1 {sub("@.*", "", $$2); print "\t"$$2";"}' | sort -u;\
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echo '};'; \
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) > $2; \
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else \
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(echo Either missing one of [$1] or bad version of $(NM)) 1>&2;\
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fi
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endef
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install: $(PLUGINS)
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$(call QUIET_INSTALL, trace_plugins) \
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$(call do_install_plugins, $(PLUGINS))
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clean:
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$(call QUIET_CLEAN, trace_plugins) \
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$(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd; \
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$(RM) $(OUTPUT)libtraceevent-dynamic-list \
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$(RM) TRACEEVENT-CFLAGS tags TAGS;
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PHONY += force plugins
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force:
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# Declare the contents of the .PHONY variable as phony. We keep that
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# information in a variable so we can use it in if_changed and friends.
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.PHONY: $(PHONY)
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