tools/lib/lockdep/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 # file format version
   3 FILE_VERSION = 1
   4
   5 LIBLOCKDEP_VERSION=$(shell make --no-print-directory -sC ../../.. kernelversion)
   6
   7 # Makefiles suck: This macro sets a default value of $(2) for the
   8 # variable named by $(1), unless the variable has been set by
   9 # environment or command line. This is necessary for CC and AR
  10 # because make sets default values, so the simpler ?= approach
  11 # won't work as expected.
  12 define allow-override
  13   $(if $(or $(findstring environment,$(origin $(1))),\
  14             $(findstring command line,$(origin $(1)))),,\
  15     $(eval $(1) = $(2)))
  16 endef
  17
  18 # Allow setting CC and AR and LD, or setting CROSS_COMPILE as a prefix.
  19 $(call allow-override,CC,$(CROSS_COMPILE)gcc)
  20 $(call allow-override,AR,$(CROSS_COMPILE)ar)
  21 $(call allow-override,LD,$(CROSS_COMPILE)ld)
  22
  23 INSTALL = install
  24
  25 # Use DESTDIR for installing into a different root directory.
  26 # This is useful for building a package. The program will be
  27 # installed in this directory as if it was the root directory.
  28 # Then the build tool can move it later.
  29 DESTDIR ?=
  30 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
  31
  32 prefix ?= /usr/local
  33 libdir_relative = lib
  34 libdir = $(prefix)/$(libdir_relative)
  35 bindir_relative = bin
  36 bindir = $(prefix)/$(bindir_relative)
  37
  38 export DESTDIR DESTDIR_SQ INSTALL
  39
  40 MAKEFLAGS += --no-print-directory
  41
  42 include ../../scripts/Makefile.include
  43
  44 # copy a bit from Linux kbuild
  45
  46 ifeq ("$(origin V)", "command line")
  47   VERBOSE = $(V)
  48 endif
  49 ifndef VERBOSE
  50   VERBOSE = 0
  51 endif
  52
  53 ifeq ($(srctree),)
  54 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  55 srctree := $(patsubst %/,%,$(dir $(srctree)))
  56 srctree := $(patsubst %/,%,$(dir $(srctree)))
  57 #$(info Determined 'srctree' to be $(srctree))
  58 endif
  59
  60 # Shell quotes
  61 libdir_SQ = $(subst ','\'',$(libdir))
  62 bindir_SQ = $(subst ','\'',$(bindir))
  63
  64 LIB_IN := $(OUTPUT)liblockdep-in.o
  65
  66 BIN_FILE = lockdep
  67 LIB_FILE = $(OUTPUT)liblockdep.a $(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION)
  68
  69 CONFIG_INCLUDES =
  70 CONFIG_LIBS     =
  71 CONFIG_FLAGS    =
  72
  73 OBJ             = $@
  74 N               =
  75
  76 export Q VERBOSE
  77
  78 INCLUDES = -I. -I./uinclude -I./include -I../../include $(CONFIG_INCLUDES)
  79
  80 # Set compile option CFLAGS if not set elsewhere
  81 CFLAGS ?= -g -DCONFIG_LOCKDEP -DCONFIG_STACKTRACE -DCONFIG_PROVE_LOCKING -DBITS_PER_LONG=__WORDSIZE -DLIBLOCKDEP_VERSION='"$(LIBLOCKDEP_VERSION)"' -rdynamic -O0 -g
  82 CFLAGS += -fPIC
  83 CFLAGS += -Wall
  84
  85 override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
  86
  87 ifeq ($(VERBOSE),1)
  88   Q =
  89   print_shared_lib_compile =
  90   print_install =
  91 else
  92   Q = @
  93   print_shared_lib_compile =    echo '  LD       '$(OBJ);
  94   print_static_lib_build =      echo '  LD       '$(OBJ);
  95   print_install =               echo '  INSTALL  '$1'   to      $(DESTDIR_SQ)$2';
  96 endif
  97
  98 all:
  99
 100 export srctree OUTPUT CC LD CFLAGS V
 101 include $(srctree)/tools/build/Makefile.include
 102
 103 do_compile_shared_library =                     \
 104         ($(print_shared_lib_compile)            \
 105         $(CC) $(LDFLAGS) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='$(@F)';$(shell ln -sf $(@F) $(@D)/liblockdep.so))
 106
 107 do_build_static_lib =                           \
 108         ($(print_static_lib_build)              \
 109         $(RM) $@;  $(AR) rcs $@ $^)
 110
 111 CMD_TARGETS = $(LIB_FILE)
 112
 113 TARGETS = $(CMD_TARGETS)
 114
 115
 116 all: fixdep all_cmd
 117
 118 all_cmd: $(CMD_TARGETS)
 119
 120 $(LIB_IN): force
 121         $(Q)$(MAKE) $(build)=liblockdep
 122
 123 $(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION): $(LIB_IN)
 124         $(Q)$(do_compile_shared_library)
 125
 126 $(OUTPUT)liblockdep.a: $(LIB_IN)
 127         $(Q)$(do_build_static_lib)
 128
 129 tags:   force
 130         $(RM) tags
 131         find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
 132         --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
 133
 134 TAGS:   force
 135         $(RM) TAGS
 136         find . -name '*.[ch]' | xargs etags \
 137         --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
 138
 139 define do_install
 140         $(print_install)                                \
 141         if [ ! -d '$(DESTDIR_SQ)$2' ]; then             \
 142                 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
 143         fi;                                             \
 144         $(INSTALL) $1 '$(DESTDIR_SQ)$2'
 145 endef
 146
 147 install_lib: all_cmd
 148         $(Q)$(call do_install,$(LIB_FILE),$(libdir_SQ))
 149         $(Q)$(call do_install,$(BIN_FILE),$(bindir_SQ))
 150
 151 install: install_lib
 152
 153 clean:
 154         $(RM) $(OUTPUT)*.o *~ $(TARGETS) $(OUTPUT)*.a $(OUTPUT)*liblockdep*.so* $(VERSION_FILES) $(OUTPUT).*.d $(OUTPUT).*.cmd
 155         $(RM) tags TAGS
 156
 157 PHONY += force
 158 force:
 159
 160 # Declare the contents of the .PHONY variable as phony.  We keep that
 161 # information in a variable so we can use it in if_changed and friends.
 162 .PHONY: $(PHONY)