Makefile

   1 SubDirs := lib
   2
   3 # Set default rule before anything else.
   4 all: help
   5
   6 include make/config.mk
   7 include make/util.mk
   8 # If SRCROOT is defined, assume we are doing an Apple style build. We should be
   9 # able to use RC_XBS for this but that is unused during "make installsrc".
  10 ifdef SRCROOT
  11   include make/AppleBI.mk
  12 endif
  13
  14 # Make sure we don't build with a missing ProjObjRoot.
  15 ifeq ($(ProjObjRoot),)
  16 $(error Refusing to build with empty ProjObjRoot variable)
  17 endif
  18
  19 ##############
  20
  21 ###
  22 # Rules
  23
  24 ###
  25 # Top level targets
  26
  27 # FIXME: Document the available subtargets.
  28 help:
  29         @echo "usage: make [{VARIABLE=VALUE}*] target"
  30         @echo
  31         @echo "User variables:"
  32         @echo "  VERBOSE=1: Use to show all commands [default=0]"
  33         @echo
  34         @echo "Available targets:"
  35         @echo "  <platform name>: build the libraries for 'platform'"
  36         @echo "  clean:           clean all configurations"
  37         @echo "  test:            run unit tests"
  38         @echo
  39         @echo "  info-platforms:  list available platforms"
  40         @echo "  help-devel:      print additional help for developers"
  41         @echo
  42
  43 help-devel: help
  44         @echo "Development targets:"
  45         @echo "  <platform name>-<config name>:"
  46         @echo "    build the libraries for a single platform config"
  47         @echo "  <platform name>-<config name>-<arch name>:"
  48         @echo "    build the libraries for a single config and arch"
  49         @echo "  info-functions: list available compiler-rt functions"
  50         @echo "  help-hidden: print help for Makefile debugging"
  51         @echo
  52
  53 help-hidden: help-devel
  54         @echo "Debugging variables:"
  55         @echo "  DEBUGMAKE=1: enable some Makefile logging [default=]"
  56         @echo "           =2: enable more Makefile logging"
  57         @echo
  58         @echo "Debugging targets:"
  59         @echo "  make-print-FOO: print information on the variable 'FOO'"
  60         @echo
  61
  62 info-functions:
  63         @echo "compiler-rt Available Functions"
  64         @echo
  65         @echo "All Functions: $(AvailableFunctions)"
  66         @$(foreach fn,$(AvailableFunctions),\
  67           printf "  %-20s - available in (%s)\n" $(fn)\
  68             "$(foreach key,$(AvailableIn.$(fn)),$($(key).Dir))";)
  69
  70 info-platforms:
  71         @echo "compiler-rt Available Platforms"
  72         @echo
  73         @echo "Platforms:"
  74         @$(foreach key,$(PlatformKeys),\
  75           printf "  %s - from '%s'\n" $($(key).Name) $($(key).Path);\
  76           printf "    %s\n" "$($(key).Description)";\
  77           printf "    Configurations: %s\n\n" "$($(key).Configs)";)
  78
  79 # Provide default clean target which is extended by other templates.
  80 .PHONY: clean
  81 clean::
  82
  83 # Test
  84 .PHONY: test
  85 test:
  86         cd test/Unit && ./test
  87
  88 ###
  89 # Directory handling magic.
  90
  91 # Create directories as needed, and timestamp their creation.
  92 %/.dir:
  93         $(Summary) "  MKDIR:     $*"
  94         $(Verb) $(MKDIR) $* > /dev/null
  95         $(Verb) $(DATE) > $@
  96
  97 # Remove directories
  98 %/.remove:
  99         $(Verb) $(RM) -r $*
 100
 101 ###
 102 # Include child makefile fragments
 103
 104 Dir := .
 105 include make/subdir.mk
 106 include make/lib_info.mk
 107 include make/lib_util.mk
 108 include make/lib_platforms.mk
 109
 110 ###
 111 # Define Platform Rules
 112
 113 define PerPlatform_template
 114 $(call Set,Tmp.Key,$(1))
 115 $(call Set,Tmp.Name,$($(Tmp.Key).Name))
 116 $(call Set,Tmp.Configs,$($(Tmp.Key).Configs))
 117 $(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name))
 118
 119 # Top-Level Platform Target
 120 $(Tmp.Name):: $(Tmp.Configs:%=$(Tmp.ObjPath)/%/libcompiler_rt.a)
 121 .PHONY: $(Tmp.Name)
 122
 123 clean::
 124         $(Verb) rm -rf $(Tmp.ObjPath)
 125
 126 # Per-Config Libraries
 127 $(foreach config,$(Tmp.Configs),\
 128   $(call PerPlatformConfig_template,$(config)))
 129 endef
 130
 131 define PerPlatformConfig_template
 132 $(call Set,Tmp.Config,$(1))
 133 $(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config))
 134
 135 # Compute the archs to build, depending on whether this is a universal build or
 136 # not.
 137 $(call Set,Tmp.ArchsToBuild,\
 138   $(if $(call IsDefined,$(Tmp.Key).UniversalArchs),\
 139        $(strip \
 140          $(or $($(Tmp.Key).UniversalArchs.$(Tmp.Config)),\
 141               $($(Tmp.Key).UniversalArchs))),\
 142        $(call VarOrDefault,$(Tmp.Key).Arch.$(Tmp.Config),$($(Tmp.Key).Arch))))
 143
 144 # Copy or lipo to create the per-config library.
 145 $(call Set,Tmp.Inputs,$(Tmp.ArchsToBuild:%=$(Tmp.ObjPath)/%/libcompiler_rt.a))
 146 $(Tmp.ObjPath)/libcompiler_rt.a: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
 147         $(Summary) "  FINAL-ARCHIVE: $(Tmp.Name)/$(Tmp.Config): $$@"
 148         -$(Verb) $(RM) $$@
 149         $(if $(call streq,1,$(words $(Tmp.ArchsToBuild))), \
 150           $(Verb) $(CP) $(Tmp.Inputs) $$@, \
 151           $(Verb) $(LIPO) -create -output $$@ $(Tmp.Inputs))
 152 .PRECIOUS: $(Tmp.ObjPath)/.dir
 153
 154 # Per-Config Targets
 155 $(Tmp.Name)-$(Tmp.Config):: $(Tmp.ObjPath)/libcompiler_rt.a
 156 .PHONY: $(Tmp.Name)-$(Tmp.Config)
 157
 158 # Per-Config-Arch Libraries
 159 $(foreach arch,$(Tmp.ArchsToBuild),\
 160   $(call PerPlatformConfigArch_template,$(arch)))
 161 endef
 162
 163 define PerPlatformConfigArch_template
 164 $(call Set,Tmp.Arch,$(1))
 165 $(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch))
 166 $(call Set,Tmp.Functions,$(strip \
 167   $(AlwaysRequiredModules) \
 168   $(call GetCNAVar,FUNCTIONS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 169 $(call Set,Tmp.Optimized,$(strip \
 170   $(call GetCNAVar,OPTIMIZED,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 171 $(call Set,Tmp.AR,$(strip \
 172   $(call GetCNAVar,AR,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 173 $(call Set,Tmp.ARFLAGS,$(strip \
 174   $(call GetCNAVar,ARFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 175 $(call Set,Tmp.RANLIB,$(strip \
 176   $(call GetCNAVar,RANLIB,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 177 $(call Set,Tmp.RANLIBFLAGS,$(strip \
 178   $(call GetCNAVar,RANLIBFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 179
 180 # Compute the object inputs for this library.
 181 $(call Set,Tmp.Inputs,\
 182   $(foreach fn,$(sort $(Tmp.Functions)),\
 183     $(call Set,Tmp.FnDir,\
 184       $(call SelectFunctionDir,$(Tmp.Config),$(Tmp.Arch),$(fn),$(Tmp.Optimized)))\
 185     $(Tmp.ObjPath)/$(Tmp.FnDir)/$(fn).o))
 186 $(Tmp.ObjPath)/libcompiler_rt.a: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
 187         $(Summary) "  ARCHIVE:   $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$@"
 188         -$(Verb) $(RM) $$@
 189         $(Verb) $(Tmp.AR) $(Tmp.ARFLAGS) $$@ $(Tmp.Inputs)
 190         $(Verb) $(Tmp.RANLIB) $(Tmp.RANLIBFLAGS) $$@
 191 .PRECIOUS: $(Tmp.ObjPath)/.dir
 192
 193 # Per-Config-Arch Targets
 194 $(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch):: $(Tmp.ObjPath)/libcompiler_rt.a
 195 .PHONY: $(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch)
 196
 197 # Per-Config-Arch-SubDir Objects
 198 $(foreach key,$(SubDirKeys),\
 199   $(call PerPlatformConfigArchSubDir_template,$(key)))
 200 endef
 201
 202 define PerPlatformConfigArchSubDir_template
 203 $(call Set,Tmp.SubDirKey,$(1))
 204 $(call Set,Tmp.SubDir,$($(Tmp.SubDirKey).Dir))
 205 $(call Set,Tmp.SrcPath,$(ProjSrcRoot)/$(Tmp.SubDir))
 206 $(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch)/$(Tmp.SubDirKey))
 207 $(call Set,Tmp.Dependencies,$($(Tmp.SubDirKey).Dependencies))
 208 $(call Set,Tmp.CC,$(strip \
 209   $(call GetCNAVar,CC,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 210 $(call Set,Tmp.KERNEL_USE,$(strip \
 211   $(call GetCNAVar,KERNEL_USE,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 212 $(call Set,Tmp.VISIBILITY_HIDDEN,$(strip \
 213   $(call GetCNAVar,VISIBILITY_HIDDEN,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 214 $(call Set,Tmp.CFLAGS,$(strip \
 215   $(if $(call IsDefined,$(Tmp.Key).UniversalArchs),-arch $(Tmp.Arch),)\
 216   $(if $(call streq,$(Tmp.VISIBILITY_HIDDEN),1),\
 217        -fvisibility=hidden -DVISIBILITY_HIDDEN,)\
 218   $(if $(call streq,$(Tmp.KERNEL_USE),1),\
 219        -mkernel -DKERNEL_USE,)\
 220   $(call GetCNAVar,CFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
 221
 222 $(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.s $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
 223         $(Summary) "  ASSEMBLE:  $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
 224         $(Verb) $(Tmp.CC) $(Tmp.CFLAGS)  -c -o $$@ $$<
 225 $(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.S $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
 226         $(Summary) "  ASSEMBLE:  $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
 227         $(Verb) $(Tmp.CC) $(Tmp.CFLAGS) -c -o $$@ $$<
 228 $(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.c $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
 229         $(Summary) "  COMPILE:   $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
 230         $(Verb) $(Tmp.CC) $(Tmp.CFLAGS) -c $(COMMON_CFLAGS) -o $$@ $$<
 231 $(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.cc $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
 232         $(Summary) "  COMPILE:   $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
 233         $(Verb) $(Tmp.CC) $(Tmp.CFLAGS) -c $(COMMON_CXXFLAGS) -o $$@ $$<
 234 .PRECIOUS: $(Tmp.ObjPath)/.dir
 235
 236 endef
 237
 238 # Run templates.
 239 $(foreach key,$(PlatformKeys),\
 240   $(eval $(call PerPlatform_template,$(key))))
 241
 242 ###
 243
 244 ifneq ($(DEBUGMAKE),)
 245   $(info MAKE: Done processing Makefile)
 246   $(info  )
 247 endif