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