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