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|
# file format version
FILE_VERSION = 1
LIBLOCKDEP_VERSION=$(shell make --no-print-directory -sC ../../.. kernelversion)
# 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)
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))'
prefix ?= /usr/local
libdir_relative = lib
libdir = $(prefix)/$(libdir_relative)
bindir_relative = bin
bindir = $(prefix)/$(bindir_relative)
export DESTDIR DESTDIR_SQ INSTALL
# copy a bit from Linux kbuild
ifeq ("$(origin V)", "command line")
VERBOSE = $(V)
endif
ifndef VERBOSE
VERBOSE = 0
endif
ifeq ("$(origin O)", "command line")
BUILD_OUTPUT := $(O)
endif
ifeq ($(BUILD_SRC),)
ifneq ($(BUILD_OUTPUT),)
define build_output
$(if $(VERBOSE:1=),@)$(MAKE) -C $(BUILD_OUTPUT) \
BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1
endef
saved-output := $(BUILD_OUTPUT)
BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd)
$(if $(BUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
all: sub-make
gui: force
$(call build_output, all_cmd)
$(filter-out gui,$(MAKECMDGOALS)): sub-make
sub-make: force
$(call build_output, $(MAKECMDGOALS))
# Leave processing to above invocation of make
skip-makefile := 1
endif # BUILD_OUTPUT
endif # BUILD_SRC
# We process the rest of the Makefile if this is the final invocation of make
ifeq ($(skip-makefile),)
srctree := $(realpath $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR)))
objtree := $(realpath $(CURDIR))
src := $(srctree)
obj := $(objtree)
export prefix libdir bindir src obj
# Shell quotes
libdir_SQ = $(subst ','\'',$(libdir))
bindir_SQ = $(subst ','\'',$(bindir))
LIB_FILE = liblockdep.a liblockdep.so.$(LIBLOCKDEP_VERSION)
BIN_FILE = lockdep
CONFIG_INCLUDES =
CONFIG_LIBS =
CONFIG_FLAGS =
OBJ = $@
N =
export Q VERBOSE
INCLUDES = -I. -I/usr/local/include -I./uinclude -I./include $(CONFIG_INCLUDES)
# Set compile option CFLAGS if not set elsewhere
CFLAGS ?= -g -DCONFIG_LOCKDEP -DCONFIG_STACKTRACE -DCONFIG_PROVE_LOCKING -DBITS_PER_LONG=__WORDSIZE -DLIBLOCKDEP_VERSION='"$(LIBLOCKDEP_VERSION)"' -rdynamic -O0 -g
override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
ifeq ($(VERBOSE),1)
Q =
print_compile =
print_app_build =
print_fpic_compile =
print_shared_lib_compile =
print_install =
else
Q = @
print_compile = echo ' CC '$(OBJ);
print_app_build = echo ' BUILD '$(OBJ);
print_fpic_compile = echo ' CC FPIC '$(OBJ);
print_shared_lib_compile = echo ' BUILD SHARED LIB '$(OBJ);
print_static_lib_build = echo ' BUILD STATIC LIB '$(OBJ);
print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2';
endif
do_fpic_compile = \
($(print_fpic_compile) \
$(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@)
do_app_build = \
($(print_app_build) \
$(CC) $^ -rdynamic -o $@ $(CONFIG_LIBS) $(LIBS))
do_compile_shared_library = \
($(print_shared_lib_compile) \
$(CC) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='"$@"';$(shell ln -s $@ liblockdep.so))
do_build_static_lib = \
($(print_static_lib_build) \
$(RM) $@; $(AR) rcs $@ $^)
define do_compile
$(print_compile) \
$(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@;
endef
$(obj)/%.o: $(src)/%.c
$(Q)$(call do_compile)
%.o: $(src)/%.c
$(Q)$(call do_compile)
PEVENT_LIB_OBJS = common.o lockdep.o preload.o rbtree.o
ALL_OBJS = $(PEVENT_LIB_OBJS)
CMD_TARGETS = $(LIB_FILE)
TARGETS = $(CMD_TARGETS)
all: all_cmd
all_cmd: $(CMD_TARGETS)
liblockdep.so.$(LIBLOCKDEP_VERSION): $(PEVENT_LIB_OBJS)
$(Q)$(do_compile_shared_library)
liblockdep.a: $(PEVENT_LIB_OBJS)
$(Q)$(do_build_static_lib)
$(PEVENT_LIB_OBJS): %.o: $(src)/%.c
$(Q)$(do_fpic_compile)
## make deps
all_objs := $(sort $(ALL_OBJS))
all_deps := $(all_objs:%.o=.%.d)
# let .d file also depends on the source and header files
define check_deps
@set -e; $(RM) $@; \
$(CC) -MM $(CFLAGS) $< > $@.$$$$; \
sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
$(RM) $@.$$$$
endef
$(all_deps): .%.d: $(src)/%.c
$(Q)$(call check_deps)
$(all_objs) : %.o : .%.d
dep_includes := $(wildcard $(all_deps))
ifneq ($(dep_includes),)
include $(dep_includes)
endif
### Detect environment changes
TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):$(ARCH):$(CROSS_COMPILE)
tags: force
$(RM) tags
find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
--regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
TAGS: force
$(RM) TAGS
find . -name '*.[ch]' | xargs etags \
--regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
define do_install
$(print_install) \
if [ ! -d '$(DESTDIR_SQ)$2' ]; then \
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
fi; \
$(INSTALL) $1 '$(DESTDIR_SQ)$2'
endef
install_lib: all_cmd
$(Q)$(call do_install,$(LIB_FILE),$(libdir_SQ))
$(Q)$(call do_install,$(BIN_FILE),$(bindir_SQ))
install: install_lib
clean:
$(RM) *.o *~ $(TARGETS) *.a *liblockdep*.so* $(VERSION_FILES) .*.d
$(RM) tags TAGS
endif # skip-makefile
PHONY += force
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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