4 LIBLOCKDEP_VERSION=$(shell make --no-print-directory -sC ../../.. kernelversion)
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.
12 $(if $(or $(findstring environment,$(origin $(1))),\
13 $(findstring command line,$(origin $(1)))),,\
17 # Allow setting CC and AR and LD, or setting CROSS_COMPILE as a prefix.
18 $(call allow-override,CC,$(CROSS_COMPILE)gcc)
19 $(call allow-override,AR,$(CROSS_COMPILE)ar)
20 $(call allow-override,LD,$(CROSS_COMPILE)ld)
24 # Use DESTDIR for installing into a different root directory.
25 # This is useful for building a package. The program will be
26 # installed in this directory as if it was the root directory.
27 # Then the build tool can move it later.
29 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
33 libdir = $(prefix)/$(libdir_relative)
35 bindir = $(prefix)/$(bindir_relative)
37 export DESTDIR DESTDIR_SQ INSTALL
39 MAKEFLAGS += --no-print-directory
41 include ../../scripts/Makefile.include
43 # copy a bit from Linux kbuild
45 ifeq ("$(origin V)", "command line")
53 srctree := $(patsubst %/,%,$(dir $(shell pwd)))
54 srctree := $(patsubst %/,%,$(dir $(srctree)))
55 srctree := $(patsubst %/,%,$(dir $(srctree)))
56 #$(info Determined 'srctree' to be $(srctree))
60 libdir_SQ = $(subst ','\'',$(libdir))
61 bindir_SQ = $(subst ','\'',$(bindir))
63 LIB_IN := $(OUTPUT)liblockdep-in.o
66 LIB_FILE = $(OUTPUT)liblockdep.a $(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION)
77 INCLUDES = -I. -I./uinclude -I./include -I../../include $(CONFIG_INCLUDES)
79 # Set compile option CFLAGS if not set elsewhere
80 CFLAGS ?= -g -DCONFIG_LOCKDEP -DCONFIG_STACKTRACE -DCONFIG_PROVE_LOCKING -DBITS_PER_LONG=__WORDSIZE -DLIBLOCKDEP_VERSION='"$(LIBLOCKDEP_VERSION)"' -rdynamic -O0 -g
83 override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
87 print_shared_lib_compile =
91 print_shared_lib_compile = echo ' LD '$(OBJ);
92 print_static_lib_build = echo ' LD '$(OBJ);
93 print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2';
96 export srctree OUTPUT CC LD CFLAGS V
97 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
99 do_compile_shared_library = \
100 ($(print_shared_lib_compile) \
101 $(CC) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='"$@"';$(shell ln -s $@ liblockdep.so))
103 do_build_static_lib = \
104 ($(print_static_lib_build) \
105 $(RM) $@; $(AR) rcs $@ $^)
107 CMD_TARGETS = $(LIB_FILE)
109 TARGETS = $(CMD_TARGETS)
114 all_cmd: $(CMD_TARGETS)
117 $(Q)$(MAKE) $(build)=liblockdep
119 liblockdep.so.$(LIBLOCKDEP_VERSION): $(LIB_IN)
120 $(Q)$(do_compile_shared_library)
122 liblockdep.a: $(LIB_IN)
123 $(Q)$(do_build_static_lib)
127 find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
128 --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
132 find . -name '*.[ch]' | xargs etags \
133 --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
137 if [ ! -d '$(DESTDIR_SQ)$2' ]; then \
138 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
140 $(INSTALL) $1 '$(DESTDIR_SQ)$2'
144 $(Q)$(call do_install,$(LIB_FILE),$(libdir_SQ))
145 $(Q)$(call do_install,$(BIN_FILE),$(bindir_SQ))
150 $(RM) *.o *~ $(TARGETS) *.a *liblockdep*.so* $(VERSION_FILES) .*.d
156 # Declare the contents of the .PHONY variable as phony. We keep that
157 # information in a variable so we can use it in if_changed and friends.