tools/lib/lockdep/Makefile

   1 # file format version
   2 FILE_VERSION = 1
   3
   4 LIBLOCKDEP_VERSION=$(shell make --no-print-directory -sC ../../.. kernelversion)
   5
   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.
  11 define allow-override
  12   $(if $(or $(findstring environment,$(origin $(1))),\
  13             $(findstring command line,$(origin $(1)))),,\
  14     $(eval $(1) = $(2)))
  15 endef
  16
  17 # Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
  18 $(call allow-override,CC,$(CROSS_COMPILE)gcc)
  19 $(call allow-override,AR,$(CROSS_COMPILE)ar)
  20
  21 INSTALL = install
  22
  23 # Use DESTDIR for installing into a different root directory.
  24 # This is useful for building a package. The program will be
  25 # installed in this directory as if it was the root directory.
  26 # Then the build tool can move it later.
  27 DESTDIR ?=
  28 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
  29
  30 prefix ?= /usr/local
  31 libdir_relative = lib
  32 libdir = $(prefix)/$(libdir_relative)
  33 bindir_relative = bin
  34 bindir = $(prefix)/$(bindir_relative)
  35
  36 export DESTDIR DESTDIR_SQ INSTALL
  37
  38 MAKEFLAGS += --no-print-directory
  39
  40 include ../../scripts/Makefile.include
  41
  42 # copy a bit from Linux kbuild
  43
  44 ifeq ("$(origin V)", "command line")
  45   VERBOSE = $(V)
  46 endif
  47 ifndef VERBOSE
  48   VERBOSE = 0
  49 endif
  50
  51 ifeq ($(srctree),)
  52 srctree := $(patsubst %/,%,$(dir $(shell pwd)))
  53 srctree := $(patsubst %/,%,$(dir $(srctree)))
  54 srctree := $(patsubst %/,%,$(dir $(srctree)))
  55 #$(info Determined 'srctree' to be $(srctree))
  56 endif
  57
  58 # Shell quotes
  59 libdir_SQ = $(subst ','\'',$(libdir))
  60 bindir_SQ = $(subst ','\'',$(bindir))
  61
  62 LIB_IN := $(OUTPUT)liblockdep-in.o
  63
  64 BIN_FILE = lockdep
  65 LIB_FILE = $(OUTPUT)liblockdep.a $(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION)
  66
  67 CONFIG_INCLUDES =
  68 CONFIG_LIBS     =
  69 CONFIG_FLAGS    =
  70
  71 OBJ             = $@
  72 N               =
  73
  74 export Q VERBOSE
  75
  76 INCLUDES = -I. -I./uinclude -I./include -I../../include $(CONFIG_INCLUDES)
  77
  78 # Set compile option CFLAGS if not set elsewhere
  79 CFLAGS ?= -g -DCONFIG_LOCKDEP -DCONFIG_STACKTRACE -DCONFIG_PROVE_LOCKING -DBITS_PER_LONG=__WORDSIZE -DLIBLOCKDEP_VERSION='"$(LIBLOCKDEP_VERSION)"' -rdynamic -O0 -g
  80 CFLAGS += -fPIC
  81
  82 override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
  83
  84 ifeq ($(VERBOSE),1)
  85   Q =
  86   print_shared_lib_compile =
  87   print_install =
  88 else
  89   Q = @
  90   print_shared_lib_compile =    echo '  LD       '$(OBJ);
  91   print_static_lib_build =      echo '  LD       '$(OBJ);
  92   print_install =               echo '  INSTALL  '$1'   to      $(DESTDIR_SQ)$2';
  93 endif
  94
  95 export srctree OUTPUT CC LD CFLAGS V
  96 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
  97
  98 do_compile_shared_library =                     \
  99         ($(print_shared_lib_compile)            \
 100         $(CC) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='"$@"';$(shell ln -s $@ liblockdep.so))
 101
 102 do_build_static_lib =                           \
 103         ($(print_static_lib_build)              \
 104         $(RM) $@;  $(AR) rcs $@ $^)
 105
 106 CMD_TARGETS = $(LIB_FILE)
 107
 108 TARGETS = $(CMD_TARGETS)
 109
 110
 111 all: all_cmd
 112
 113 all_cmd: $(CMD_TARGETS)
 114
 115 $(LIB_IN): force
 116         $(Q)$(MAKE) $(build)=liblockdep
 117
 118 liblockdep.so.$(LIBLOCKDEP_VERSION): $(LIB_IN)
 119         $(Q)$(do_compile_shared_library)
 120
 121 liblockdep.a: $(LIB_IN)
 122         $(Q)$(do_build_static_lib)
 123
 124 tags:   force
 125         $(RM) tags
 126         find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
 127         --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
 128
 129 TAGS:   force
 130         $(RM) TAGS
 131         find . -name '*.[ch]' | xargs etags \
 132         --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
 133
 134 define do_install
 135         $(print_install)                                \
 136         if [ ! -d '$(DESTDIR_SQ)$2' ]; then             \
 137                 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
 138         fi;                                             \
 139         $(INSTALL) $1 '$(DESTDIR_SQ)$2'
 140 endef
 141
 142 install_lib: all_cmd
 143         $(Q)$(call do_install,$(LIB_FILE),$(libdir_SQ))
 144         $(Q)$(call do_install,$(BIN_FILE),$(bindir_SQ))
 145
 146 install: install_lib
 147
 148 clean:
 149         $(RM) *.o *~ $(TARGETS) *.a *liblockdep*.so* $(VERSION_FILES) .*.d
 150         $(RM) tags TAGS
 151
 152 PHONY += force
 153 force:
 154
 155 # Declare the contents of the .PHONY variable as phony.  We keep that
 156 # information in a variable so we can use it in if_changed and friends.
 157 .PHONY: $(PHONY)