# 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 and LD, or setting CROSS_COMPILE as a prefix. $(call allow-override,CC,$(CROSS_COMPILE)gcc) $(call allow-override,AR,$(CROSS_COMPILE)ar) $(call allow-override,LD,$(CROSS_COMPILE)ld) 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 MAKEFLAGS += --no-print-directory 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 $(srctree))) #$(info Determined 'srctree' to be $(srctree)) endif # Shell quotes libdir_SQ = $(subst ','\'',$(libdir)) bindir_SQ = $(subst ','\'',$(bindir)) LIB_IN := $(OUTPUT)liblockdep-in.o BIN_FILE = lockdep LIB_FILE = $(OUTPUT)liblockdep.a $(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION) CONFIG_INCLUDES = CONFIG_LIBS = CONFIG_FLAGS = OBJ = $@ N = export Q VERBOSE INCLUDES = -I. -I./uinclude -I./include -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 CFLAGS += -fPIC override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ) ifeq ($(VERBOSE),1) Q = print_shared_lib_compile = print_install = else Q = @ print_shared_lib_compile = echo ' LD '$(OBJ); print_static_lib_build = echo ' LD '$(OBJ); print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2'; endif all: export srctree OUTPUT CC LD CFLAGS V include $(srctree)/tools/build/Makefile.include do_compile_shared_library = \ ($(print_shared_lib_compile) \ $(CC) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='"$@"';$(shell ln -sf $@ liblockdep.so)) do_build_static_lib = \ ($(print_static_lib_build) \ $(RM) $@; $(AR) rcs $@ $^) CMD_TARGETS = $(LIB_FILE) TARGETS = $(CMD_TARGETS) all: fixdep all_cmd all_cmd: $(CMD_TARGETS) $(LIB_IN): force $(Q)$(MAKE) $(build)=liblockdep liblockdep.so.$(LIBLOCKDEP_VERSION): $(LIB_IN) $(Q)$(do_compile_shared_library) liblockdep.a: $(LIB_IN) $(Q)$(do_build_static_lib) 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 .*.cmd $(RM) tags TAGS 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) >