llvm/Makefile.rules

#===-- Makefile.rules - Common make rules for LLVM ---------*- Makefile -*--===#
#
#                     The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
# 
#===------------------------------------------------------------------------===#
#
# This file is included by all of the LLVM makefiles.  For details on how to use
# it properly, please see the document MakefileGuide.html in the docs directory.
#
#===-----------------------------------------------------------------------====#

################################################################################
# TARGETS: Define standard targets that can be invoked
################################################################################

#--------------------------------------------------------------------
# Define the various target sets
#--------------------------------------------------------------------
RecursiveTargets := all clean clean-all install uninstall install-bytecode
LocalTargets     := all-local clean-local clean-all-local check-local \
                    install-local printvars uninstall-local \
		    install-bytecode-local
TopLevelTargets  := check dist dist-check dist-clean dist-gzip dist-bzip2 \
                    dist-zip
UserTargets      := $(RecursiveTargets) $(LocalTargets) $(TopLevelTargets)
InternalTargets  := preconditions distdir dist-hook

################################################################################
# INITIALIZATION: Basic things the makefile needs
################################################################################

#--------------------------------------------------------------------
# Set the VPATH so that we can find source files.
#--------------------------------------------------------------------
VPATH=$(PROJ_SRC_DIR)

#--------------------------------------------------------------------
# Reset the list of suffixes we know how to build.
#--------------------------------------------------------------------
.SUFFIXES:
.SUFFIXES: .c .cpp .cc .h .hpp .y .l .lo .o .a .bc .td .ps .dot .ll
.SUFFIXES: $(SHLIBEXT) $(SUFFIXES)

#--------------------------------------------------------------------
# Mark all of these targets as phony to avoid implicit rule search
#--------------------------------------------------------------------
.PHONY: $(UserTargets) $(InternalTargets)

#--------------------------------------------------------------------
# Make sure all the user-target rules are double colon rules and 
# they are defined first.
#--------------------------------------------------------------------

$(UserTargets)::

################################################################################
# PRECONDITIONS: that which must be built/checked first
################################################################################

SrcMakefiles       := $(filter %Makefile %Makefile.tests,\
                      $(wildcard $(PROJ_SRC_DIR)/Makefile*))
ObjMakefiles       := $(subst $(PROJ_SRC_DIR),$(PROJ_OBJ_DIR),$(SrcMakefiles))
ConfigureScript    := $(PROJ_SRC_ROOT)/configure
ConfigStatusScript := $(PROJ_OBJ_ROOT)/config.status
MakefileConfigIn   := $(strip $(wildcard $(PROJ_SRC_ROOT)/Makefile.config.in))
MakefileCommonIn   := $(strip $(wildcard $(PROJ_SRC_ROOT)/Makefile.common.in))
MakefileConfig     := $(PROJ_OBJ_ROOT)/Makefile.config
MakefileCommon     := $(PROJ_OBJ_ROOT)/Makefile.common
PreConditions      := $(ConfigStatusScript) $(ObjMakefiles)
ifneq ($(MakefileCommonIn),)
PreConditions      += $(MakefileCommon)
endif

ifneq ($(MakefileConfigIn),)
PreConditions      += $(MakefileConfig)
endif

preconditions: $(PreConditions)

#------------------------------------------------------------------------
# Make sure the BUILT_SOURCES are built first
#------------------------------------------------------------------------
$(filter-out clean clean-local,$(UserTargets)):: $(BUILT_SOURCES)

clean-all-local::
ifneq ($(strip $(BUILT_SOURCES)),)
	-$(Verb) $(RM) -f $(BUILT_SOURCES)
endif

ifneq ($(PROJ_OBJ_ROOT),$(PROJ_SRC_ROOT))
spotless:
	$(Verb) if test -x config.status ; then \
	  $(EchoCmd) Wiping out $(PROJ_OBJ_ROOT) ; \
	  $(MKDIR) .spotless.save ; \
	  $(MV) config.status .spotless.save ; \
	  $(MV) mklib  .spotless.save ; \
	  $(MV) projects  .spotless.save ; \
	  $(RM) -rf * ; \
	  $(MV) .spotless.save/config.status . ; \
	  $(MV) .spotless.save/mklib . ; \
	  $(MV) .spotless.save/projects . ; \
	  $(RM) -rf .spotless.save ; \
	  $(EchoCmd) Rebuilding configuration of $(PROJ_OBJ_ROOT) ; \
	  $(ConfigStatusScript) --recheck $(ConfigureScriptFLAGS) && \
	  $(ConfigStatusScript) ; \
	else \
	  $(EchoCmd) "make spotless" can only be run from $(PROJ_OBJ_ROOT); \
	fi
else
spotless:
	$(EchoCmd) "spotless target not supported for objdir == srcdir"
endif

$(BUILT_SOURCES) : $(ObjMakefiles)

#------------------------------------------------------------------------
# Make sure we're not using a stale configuration
#------------------------------------------------------------------------
reconfigure:
	$(Echo) Reconfiguring $(PROJ_OBJ_ROOT)
	$(Verb) cd $(PROJ_OBJ_ROOT) && \
	  if test -w $(PROJ_OBJ_ROOT)/config.cache ; then \
	    $(RM) $(PROJ_OBJ_ROOT)/config.cache ; \
	  fi ; \
	  $(ConfigStatusScript) --recheck $(ConfigureScriptFLAGS) && \
	  $(ConfigStatusScript)

.PRECIOUS: $(ConfigStatusScript)
$(ConfigStatusScript): $(ConfigureScript)
	$(Echo) Reconfiguring with $<
	$(Verb) cd $(PROJ_OBJ_ROOT) && \
	  if test -w $(PROJ_OBJ_ROOT)/config.cache ; then \
	    $(RM) $(PROJ_OBJ_ROOT)/config.cache ; \
	  fi ; \
	  $(ConfigStatusScript) --recheck $(ConfigureScriptFLAGS) && \
	  $(ConfigStatusScript)

#------------------------------------------------------------------------
# Make sure the configuration makefile is up to date
#------------------------------------------------------------------------
ifneq ($(MakefileConfigIn),)
$(MakefileConfig): $(MakefileConfigIn) $(ConfigStatusScript)
	$(Echo) Regenerating $@
	$(Verb) cd $(PROJ_OBJ_ROOT) ; $(ConfigStatusScript) Makefile.config
endif

ifneq ($(MakefileCommonIn),)
$(MakefileCommon): $(MakefileCommonIn) $(ConfigStatusScript)
	$(Echo) Regenerating $@
	$(Verb) cd $(PROJ_OBJ_ROOT) ; $(ConfigStatusScript) Makefile.common
endif

#------------------------------------------------------------------------
# If the Makefile in the source tree has been updated, copy it over into the
# build tree. But, only do this if the source and object makefiles differ
#------------------------------------------------------------------------
ifneq ($(PROJ_OBJ_DIR),$(PROJ_SRC_DIR))

Makefile: $(PROJ_SRC_DIR)/Makefile $(ExtraMakefiles)
	$(Echo) "Updating Makefile"
	$(Verb) $(MKDIR) $(@D)
	$(Verb) $(CP) -f $< $@

# Copy the Makefile.* files unless we're in the root directory which avoids
# the copying of Makefile.config.in or other things that should be explicitly
# taken care of.
$(PROJ_OBJ_DIR)/Makefile% : $(PROJ_SRC_DIR)/Makefile%
	@case '$?' in \
          *Makefile.rules) ;; \
          *.in) ;; \
          *) $(EchoCmd) "Updating $(@F)" ; \
	     $(MKDIR) $(@D) ; \
	     $(CP) -f $< $@ ;; \
	esac

endif

#------------------------------------------------------------------------
# Set up the basic dependencies
#------------------------------------------------------------------------
$(UserTargets):: $(PreConditions)

all:: all-local
clean:: clean-local 
clean-all:: clean-local clean-all-local
install:: install-local
uninstall:: uninstall-local
install-local:: all-local 
install-bytecode:: install-bytecode-local

###############################################################################
# VARIABLES: Set up various variables based on configuration data
###############################################################################

# Variable for if this make is for a "cleaning" target
ifneq ($(strip $(filter clean clean-local dist-clean,$(MAKECMDGOALS))),)
  IS_CLEANING_TARGET=1
endif

#--------------------------------------------------------------------
# Variables derived from configuration we are building
#--------------------------------------------------------------------

CPP.Defines :=
# OPTIMIZE_OPTION - The optimization level option we want to build LLVM with
# this can be overridden on the make command line.
ifneq ($(OS),MingW)
  OPTIMIZE_OPTION := -O3
else
  OPTIMIZE_OPTION := -O2
endif

ifdef ENABLE_PROFILING
  BuildMode := Profile
  CXX.Flags += $(OPTIMIZE_OPTION) -pg -g
  C.Flags   += $(OPTIMIZE_OPTION) -pg -g
  LD.Flags  += $(OPTIMIZE_OPTION) -pg -g
  KEEP_SYMBOLS := 1
else
  ifeq ($(ENABLE_OPTIMIZED),1)
    BuildMode := Release
    # Don't use -fomit-frame-pointer on Darwin or FreeBSD.
    ifneq ($(OS),FreeBSD)
    ifneq ($(OS),Darwin)
      OmitFramePointer := -fomit-frame-pointer
    endif
    endif

    # Darwin requires -fstrict-aliasing to be explicitly enabled.
    ifeq ($(OS),Darwin)
      EXTRA_OPTIONS += -fstrict-aliasing -Wstrict-aliasing
    endif

    CXX.Flags += $(OPTIMIZE_OPTION) $(OmitFramePointer)
    C.Flags   += $(OPTIMIZE_OPTION) $(OmitFramePointer)
    LD.Flags  += $(OPTIMIZE_OPTION)
  else
    BuildMode := Debug
    CXX.Flags += -g
    C.Flags   += -g
    LD.Flags  += -g
    KEEP_SYMBOLS := 1
  endif
endif

#ifeq ($(ENABLE_VISIBILITY_INLINES_HIDDEN),1)
#    CXX.Flags += -fvisibility-inlines-hidden
#endif

# IF REQUIRES_EH=1 is specified then don't disable exceptions
ifndef REQUIRES_EH
  CXX.Flags += -fno-exceptions
endif

# IF REQUIRES_RTTI=1 is specified then don't disable run-time type id
ifndef REQUIRES_RTTI
#  CXX.Flags += -fno-rtti
endif

# If DISABLE_ASSERTIONS=1 is specified (make command line or configured),
# then disable assertions by defining the appropriate preprocessor symbols.
ifdef DISABLE_ASSERTIONS
  BuildMode := $(BuildMode)-Asserts
  CPP.Defines += -DNDEBUG
else
  CPP.Defines += -D_DEBUG
endif

# If ENABLE_EXPENSIVE_CHECKS=1 is specified (make command line or 
# configured), then enable expensive checks by defining the 
# appropriate preprocessor symbols.
ifdef ENABLE_EXPENSIVE_CHECKS
  BuildMode := $(BuildMode)+Checks
  CPP.Defines += -D_GLIBCXX_DEBUG
endif

ifeq ($(ENABLE_PIC),1)
  CXX.Flags += -fPIC
  C.Flags   += -fPIC
endif

CXX.Flags     += $(CXXFLAGS) -Woverloaded-virtual
C.Flags       += $(CFLAGS)
CPP.Defines   += $(CPPFLAGS)
CPP.BaseFlags += $(CPP.Defines)
LD.Flags      += $(LDFLAGS)
AR.Flags      := cru
LibTool.Flags := --tag=CXX

# Make Floating point IEEE compliant on Alpha.
ifeq ($(ARCH),Alpha)
  CXX.Flags     += -mieee
  CPP.BaseFlags += -mieee
ifeq ($(ENABLE_PIC),0)
  CXX.Flags     += -fPIC
  CPP.BaseFlags += -fPIC
endif
endif

ifeq ($(ARCH),Alpha)
  LD.Flags += -Wl,--no-relax
endif

#--------------------------------------------------------------------
# Directory locations
#--------------------------------------------------------------------
TargetMode :=
ifeq ($(LLVM_CROSS_COMPILING),1)
  ifeq ($(BUILD_COMPONENT),1)
    TargetMode := Build
  else
    TargetMode := Host
  endif
  BuildLLVMToolDir := $(LLVM_OBJ_ROOT)/$(BuildMode)/Build/bin
endif

ObjRootDir  := $(PROJ_OBJ_DIR)/$(BuildMode)
# It is very important that ObjDir not have an extra trailing
# slash. This ends up changing the rules so that dependency file (.d)
# information is not used at all!
ifeq ($(TargetMode),)
  ObjDir      := $(ObjRootDir)
else
  ObjDir      := $(ObjRootDir)/$(TargetMode)
endif
LibDir      := $(PROJ_OBJ_ROOT)/$(BuildMode)/$(TargetMode)/lib
ToolDir     := $(PROJ_OBJ_ROOT)/$(BuildMode)/$(TargetMode)/bin
ExmplDir    := $(PROJ_OBJ_ROOT)/$(BuildMode)/$(TargetMode)/examples
LLVMLibDir  := $(LLVM_OBJ_ROOT)/$(BuildMode)/$(TargetMode)/lib
LLVMToolDir := $(LLVM_OBJ_ROOT)/$(BuildMode)/$(TargetMode)/bin
LLVMExmplDir:= $(LLVM_OBJ_ROOT)/$(BuildMode)/$(TargetMode)/examples
CFERuntimeLibDir := $(LLVMGCCDIR)/lib

#--------------------------------------------------------------------
# Full Paths To Compiled Tools and Utilities
#--------------------------------------------------------------------
EchoCmd  = $(ECHO) llvm[$(MAKELEVEL)]:
Echo     = @$(EchoCmd)
ifndef LIBTOOL
LIBTOOL  := $(LLVM_OBJ_ROOT)/mklib
endif
ifndef LLVMAS
LLVMAS   := $(LLVMToolDir)/llvm-as$(EXEEXT)
endif
ifndef TBLGEN
  ifeq ($(LLVM_CROSS_COMPILING),1)
    TBLGEN   := $(BuildLLVMToolDir)/tblgen$(EXEEXT)
  else
    TBLGEN   := $(LLVMToolDir)/tblgen$(EXEEXT)
  endif
endif
LLVM_CONFIG := $(LLVMToolDir)/llvm-config 
ifndef LLVMLD
LLVMLD    := $(LLVMToolDir)/llvm-ld$(EXEEXT)
endif
ifndef LLVMDIS
LLVMDIS  := $(LLVMToolDir)/llvm-dis$(EXEEXT)
endif
ifndef LLI
LLI      := $(LLVMToolDir)/lli$(EXEEXT)
endif
ifndef LLC
LLC      := $(LLVMToolDir)/llc$(EXEEXT)
endif
ifndef LOPT
LOPT     := $(LLVMToolDir)/opt$(EXEEXT)
endif
ifndef LBUGPOINT
LBUGPOINT := $(LLVMToolDir)/bugpoint$(EXEEXT)
endif
ifndef LUPGRADE
LUPGRADE := $(LLVMToolDir)/llvm-upgrade$(EXEEXT)
endif
ifeq ($(LLVMGCC_MAJVERS),3)
UPGRADE_MSG = $(Echo) "Upgrading $(1) assembly to latest."
UPGRADE_LL  = $(Verb)$(LUPGRADE) $(1) -o $(1).up.tmp -f ; $(MV) $(1).up.tmp $(1)
LLVMGCCWITHPATH  := PATH="$(LLVMToolDir):$(PATH)" $(LLVMGCC)
LLVMGXXWITHPATH  := PATH="$(LLVMToolDir):$(PATH)" $(LLVMGXX)
else
UPGRADE_MSG =
UPGRADE_LL  =
LLVMGCCWITHPATH  := $(LLVMGCC)
LLVMGXXWITHPATH  := $(LLVMGXX)
endif

#--------------------------------------------------------------------
# Adjust to user's request
#--------------------------------------------------------------------

# Adjust LD.Flags and Libtool.Flags depending on the kind of library that is
# to be built. Note that if LOADABLE_MODULE is specified then the resulting
# shared library can be opened with dlopen. Also, LOADABLE_MODULE implies 
# several other things so we force them to be defined/on.
ifdef LOADABLE_MODULE
  SHARED_LIBRARY := 1
  DONT_BUILD_RELINKED := 1
  LINK_LIBS_IN_SHARED := 1
  LD.Flags += -module
endif

ifdef SHARED_LIBRARY
  LD.Flags += -rpath $(LibDir)
else
  LibTool.Flags += --tag=disable-shared
endif

ifdef TOOL_VERBOSE
  C.Flags += -v
  CXX.Flags += -v
  LD.Flags += -v
  VERBOSE := 1
endif

# Adjust settings for verbose mode
ifndef VERBOSE
  Verb := @
  LibTool.Flags += --silent
  AR.Flags += >/dev/null 2>/dev/null
  ConfigureScriptFLAGS += >$(PROJ_OBJ_DIR)/configure.out 2>&1
else
  ConfigureScriptFLAGS := 
endif

# By default, strip symbol information from executable
ifndef KEEP_SYMBOLS
  Strip := $(PLATFORMSTRIPOPTS)
  StripWarnMsg := "(without symbols)"
  Install.StripFlag += -s
endif

# Adjust linker flags for building an executable
ifdef TOOLNAME
ifdef EXAMPLE_TOOL
  LD.Flags += -rpath $(ExmplDir) -export-dynamic
else
  LD.Flags += -rpath $(ToolDir) -export-dynamic
endif
endif

#----------------------------------------------------------
# Options To Invoke Tools
#----------------------------------------------------------

CompileCommonOpts := -pedantic -Wall -W -Wwrite-strings -Wno-long-long \
                     -Wunused -Wno-unused-parameter $(EXTRA_OPTIONS)

ifeq ($(OS),HP-UX)
  CompileCommonOpts := -D_REENTRANT -D_HPUX_SOURCE
endif

# If we are building a universal binary on Mac OS/X, pass extra options.  This
# is useful to people that want to link the LLVM libraries into their universal
# apps.
#
# The following can be optionally specified:
#   UNIVERSAL_SDK_PATH variable can be specified as a path to the SDK to use.
#      For Mac OS/X 10.4 Intel machines, the traditional one is:
#      UNIVERSAL_SDK_PATH=/Developer/SDKs/MacOSX10.4u.sdk/
#   UNIVERSAL_ARCH can be optionally specified to be a list of architectures
#      to build for, e.g. UNIVERSAL_ARCH="i386 ppc ppc64".  This defaults to
#      i386/ppc only.
ifdef UNIVERSAL
  ifndef UNIVERSAL_ARCH
    UNIVERSAL_ARCH := i386 ppc
  endif
  UNIVERSAL_ARCH_OPTIONS := $(UNIVERSAL_ARCH:%=-arch %)
  CompileCommonOpts += $(UNIVERSAL_ARCH_OPTIONS)
  Relink.Flags := $(UNIVERSAL_ARCH_OPTIONS:%=-XCClinker %)
  ifdef UNIVERSAL_SDK_PATH
    CompileCommonOpts += -isysroot $(UNIVERSAL_SDK_PATH)
    Relink.Flags      += -XCClinker -isysroot -XCClinker $(UNIVERSAL_SDK_PATH)
  endif

  # Building universal cannot compute dependencies automatically.
  DISABLE_AUTO_DEPENDENCIES=1
endif

ifeq ($(OS),SunOS)
CPP.BaseFlags += -include llvm/System/Solaris.h
endif

LD.Flags      += -L$(LibDir) -L$(LLVMLibDir) 
CPP.BaseFlags += -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS
# All -I flags should go here, so that they don't confuse llvm-config.
CPP.Flags     += $(sort -I$(PROJ_OBJ_DIR) -I$(PROJ_SRC_DIR) \
	         $(patsubst %,-I%/include,\
	         $(PROJ_OBJ_ROOT) $(PROJ_SRC_ROOT) \
	         $(LLVM_OBJ_ROOT) $(LLVM_SRC_ROOT))) \
	         $(CPP.BaseFlags)

 ifeq ($(BUILD_COMPONENT), 1)
  Compile.C     = $(BUILD_CC) $(CPP.Flags) $(C.Flags) $(CompileCommonOpts) -c
  Compile.CXX   = $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CompileCommonOpts) -c
  Preprocess.CXX= $(BUILD_CXX) $(CPP.Flags) $(CompileCommonOpts) $(CXX.Flags) -E
  Link          = $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CompileCommonOpts) \
                  $(LD.Flags) $(Strip)
  Relink        = $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CompileCommonOpts) \
		  $(Relink.Flags)
else
  Compile.C     = $(CC) $(CPP.Flags) $(C.Flags) $(CompileCommonOpts) -c
  Compile.CXX   = $(CXX) $(CPP.Flags) $(CXX.Flags) $(CompileCommonOpts) -c
  Preprocess.CXX= $(CXX) $(CPP.Flags) $(CompileCommonOpts) $(CXX.Flags) -E
  Link          = $(CXX) $(CPP.Flags) $(CXX.Flags) $(CompileCommonOpts) \
                  $(LD.Flags) $(Strip)
  Relink        = $(CXX) $(CPP.Flags) $(CXX.Flags) $(CompileCommonOpts) \
		  $(Relink.Flags)
endif

LTCompile.C   = $(LIBTOOL) $(LibTool.Flags) --mode=compile $(Compile.C)
BCCompile.C   = $(LLVMGCCWITHPATH) $(CPP.Flags) $(C.Flags) $(CompileCommonOpts)
Preprocess.C  = $(CC) $(CPP.Flags) $(C.Flags) $(CompileCommonOpts) -E

LTCompile.CXX = $(LIBTOOL) $(LibTool.Flags) --mode=compile $(Compile.CXX)
BCCompile.CXX = $(LLVMGXXWITHPATH) $(CPP.Flags) $(CXX.Flags) \
                $(CompileCommonOpts)

LTLink        = $(LIBTOOL) $(LibTool.Flags) --mode=link $(Link)
LTRelink      = $(LIBTOOL) $(LibTool.Flags) --mode=link $(Relink)
LTInstall     = $(LIBTOOL) $(LibTool.Flags) --mode=install $(INSTALL) \
		$(Install.Flags)
ProgInstall   = $(INSTALL) $(Install.StripFlag) -m 0755 
ScriptInstall = $(INSTALL) -m 0755 
DataInstall   = $(INSTALL) -m 0644

# When compiling under Mingw/Cygwin, the tblgen tool expects Windows
# paths. In this case, the SYSPATH function (defined in
# Makefile.config) transforms Unix paths into Windows paths.
TableGen      = $(TBLGEN) -I $(call SYSPATH, $(PROJ_SRC_DIR)) \
                -I $(call SYSPATH, $(PROJ_SRC_ROOT)/include) \
                -I $(call SYSPATH, $(PROJ_SRC_ROOT)/lib/Target)

Archive       = $(AR) $(AR.Flags)
LArchive      = $(LLVMToolDir)/llvm-ar rcsf
ifdef RANLIB
Ranlib        = $(RANLIB)
else
Ranlib        = ranlib
endif

#----------------------------------------------------------
# Get the list of source files and compute object file 
# names from them. 
#----------------------------------------------------------

ifndef SOURCES
  Sources := $(notdir $(wildcard $(PROJ_SRC_DIR)/*.cpp \
             $(PROJ_SRC_DIR)/*.cc $(PROJ_SRC_DIR)/*.c $(PROJ_SRC_DIR)/*.y \
             $(PROJ_SRC_DIR)/*.l))
else
  Sources := $(SOURCES)
endif 

ifdef BUILT_SOURCES
Sources += $(filter %.cpp %.c %.cc %.y %.l,$(BUILT_SOURCES))
endif

BaseNameSources := $(sort $(basename $(Sources)))

ObjectsO  := $(BaseNameSources:%=$(ObjDir)/%.o)
ObjectsLO := $(BaseNameSources:%=$(ObjDir)/%.lo)
ObjectsBC := $(BaseNameSources:%=$(ObjDir)/%.bc)

###############################################################################
# DIRECTORIES: Handle recursive descent of directory structure
###############################################################################

#---------------------------------------------------------
# Provide rules to make install dirs. This must be early
# in the file so they get built before dependencies
#---------------------------------------------------------

$(PROJ_bindir): $(PROJ_bindir)/.dir
$(PROJ_libdir): $(PROJ_libdir)/.dir
$(PROJ_includedir): $(PROJ_includedir)/.dir
$(PROJ_etcdir): $(PROJ_etcdir)/.dir

# To create other directories, as needed, and timestamp their creation
%/.dir:
	$(Verb) $(MKDIR) $* > /dev/null
	$(Verb) $(DATE) > $@

.PRECIOUS: $(ObjDir)/.dir $(LibDir)/.dir $(ToolDir)/.dir $(ExmplDir)/.dir
.PRECIOUS: $(LLVMLibDir)/.dir $(LLVMToolDir)/.dir $(LLVMExmplDir)/.dir

#---------------------------------------------------------
# Handle the DIRS options for sequential construction
#---------------------------------------------------------

SubDirs := 
ifdef DIRS
SubDirs += $(DIRS)

ifneq ($(PROJ_SRC_ROOT),$(PROJ_OBJ_ROOT))
ifdef BUILD_TARGET_DIRS
$(RecursiveTargets)::
	$(Verb) for dir in $(BUILD_TARGET_DIRS); do \
	    if [ ! -f $$dir/Makefile ]; then \
            $(MKDIR) $$dir; \
              $(CP) $(PROJ_SRC_DIR)/$$dir/Makefile $$dir/Makefile; \
	    fi; \
            ($(MAKE) -C $$dir $@ BUILD_COMPONENT=1 NO_INSTALL=1 ) || exit 1; \
          done
endif
$(RecursiveTargets)::
	$(Verb) for dir in $(DIRS); do \
	  if [ ! -f $$dir/Makefile ]; then \
	    $(MKDIR) $$dir; \
	    $(CP) $(PROJ_SRC_DIR)/$$dir/Makefile $$dir/Makefile; \
	  fi; \
	  ($(MAKE) -C $$dir $@ ) || exit 1; \
	done
else
ifdef BUILD_TARGET_DIRS
$(RecursiveTargets)::
	$(Verb) for dir in $(BUILD_TARGET_DIRS); do \
            ($(MAKE) -C $$dir $@ BUILD_COMPONENT=1 NO_INSTALL=1 ) || exit 1; \
          done
endif
$(RecursiveTargets)::
	$(Verb) for dir in $(DIRS); do \
	  ($(MAKE) -C $$dir $@ ) || exit 1; \
	done
endif

endif

#---------------------------------------------------------
# Handle the EXPERIMENTAL_DIRS options ensuring success
# after each directory is built.
#---------------------------------------------------------
ifdef EXPERIMENTAL_DIRS
$(RecursiveTargets)::
	$(Verb) for dir in $(EXPERIMENTAL_DIRS); do \
	  if [ ! -f $$dir/Makefile ]; then \
	    $(MKDIR) $$dir; \
	    $(CP) $(PROJ_SRC_DIR)/$$dir/Makefile $$dir/Makefile; \
	  fi; \
	  ($(MAKE) -C $$dir $@ ) || exit 0; \
	done
endif

#-----------------------------------------------------------
# Handle the PARALLEL_DIRS options for parallel construction
#-----------------------------------------------------------
ifdef PARALLEL_DIRS

SubDirs += $(PARALLEL_DIRS)

# Unfortunately, this list must be maintained if new recursive targets are added
all      :: $(addsuffix /.makeall      ,$(PARALLEL_DIRS))
clean    :: $(addsuffix /.makeclean    ,$(PARALLEL_DIRS))
clean-all:: $(addsuffix /.makeclean-all,$(PARALLEL_DIRS))
install  :: $(addsuffix /.makeinstall  ,$(PARALLEL_DIRS))
uninstall:: $(addsuffix /.makeuninstall,$(PARALLEL_DIRS))
install-bytecode  :: $(addsuffix /.makeinstall-bytecode,$(PARALLEL_DIRS))

ParallelTargets := $(foreach T,$(RecursiveTargets),%/.make$(T))

$(ParallelTargets) :
	$(Verb) if [ ! -f $(@D)/Makefile ]; then \
	  $(MKDIR) $(@D); \
	  $(CP) $(PROJ_SRC_DIR)/$(@D)/Makefile $(@D)/Makefile; \
	fi; \
	$(MAKE) -C $(@D) $(subst $(@D)/.make,,$@)
endif

#---------------------------------------------------------
# Handle the OPTIONAL_DIRS options for directores that may
# or may not exist.
#---------------------------------------------------------
ifdef OPTIONAL_DIRS

SubDirs += $(OPTIONAL_DIRS)

ifneq ($(PROJ_SRC_ROOT),$(PROJ_OBJ_ROOT))
$(RecursiveTargets)::
	$(Verb) for dir in $(OPTIONAL_DIRS); do \
	  if [ -d $(PROJ_SRC_DIR)/$$dir ]; then\
	    if [ ! -f $$dir/Makefile ]; then \
	      $(MKDIR) $$dir; \
	      $(CP) $(PROJ_SRC_DIR)/$$dir/Makefile $$dir/Makefile; \
	    fi; \
	    ($(MAKE) -C$$dir $@ ) || exit 1; \
	  fi \
	done
else
$(RecursiveTargets)::
	$(Verb) for dir in $(OPTIONAL_DIRS); do \
	  ($(MAKE) -C$$dir $@ ) || exit 1; \
	done
endif
endif

#---------------------------------------------------------
# Handle the CONFIG_FILES options
#---------------------------------------------------------
ifdef CONFIG_FILES

ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) UnInstall circumvented with NO_INSTALL
else
install-local:: $(PROJ_etcdir) $(CONFIG_FILES)
	$(Echo) Installing Configuration Files To $(PROJ_etcdir)
	$(Verb)for file in $(CONFIG_FILES); do \
          if test -f $(PROJ_OBJ_DIR)/$${file} ; then \
            $(DataInstall) $(PROJ_OBJ_DIR)/$${file} $(PROJ_etcdir) ; \
          elif test -f $(PROJ_SRC_DIR)/$${file} ; then \
            $(DataInstall) $(PROJ_SRC_DIR)/$${file} $(PROJ_etcdir) ; \
          else \
            $(ECHO) Error: cannot find config file $${file}. ; \
          fi \
	done

uninstall-local::
	$(Echo) Uninstalling Configuration Files From $(PROJ_etcdir)
	$(Verb)for file in $(CONFIG_FILES); do \
	  $(RM) -f $(PROJ_etcdir)/$${file} ; \
	done
endif

endif

###############################################################################
# Set up variables for building libararies
###############################################################################

#---------------------------------------------------------
# Define various command line options pertaining to the
# libraries needed when linking. There are "Proj" libs 
# (defined by the user's project) and "LLVM" libs (defined 
# by the LLVM project).
#---------------------------------------------------------

ifdef USEDLIBS
ProjLibsOptions := $(patsubst %.a.o, -l%, $(addsuffix .o, $(USEDLIBS)))
ProjLibsOptions := $(patsubst %.o, $(LibDir)/%.o,  $(ProjLibsOptions))
ProjUsedLibs    := $(patsubst %.a.o, lib%.a, $(addsuffix .o, $(USEDLIBS)))
ProjLibsPaths   := $(addprefix $(LibDir)/,$(ProjUsedLibs))
endif

ifdef LLVMLIBS
LLVMLibsOptions := $(patsubst %.a.o, -l%, $(addsuffix .o, $(LLVMLIBS)))
LLVMLibsOptions := $(patsubst %.o, $(LLVMLibDir)/%.o, $(LLVMLibsOptions))
LLVMUsedLibs    := $(patsubst %.a.o, lib%.a, $(addsuffix .o, $(LLVMLIBS)))
LLVMLibsPaths   := $(addprefix $(LLVMLibDir)/,$(LLVMUsedLibs))
endif

ifndef IS_CLEANING_TARGET
ifdef LINK_COMPONENTS

# If LLVM_CONFIG doesn't exist, build it.  This can happen if you do a make
# clean in tools, then do a make in tools (instead of at the top level).
$(LLVM_CONFIG):
	@echo "*** llvm-config doesn't exist - rebuilding it."
	@$(MAKE) -C $(PROJ_OBJ_ROOT)/tools/llvm-config

$(ToolDir)/$(strip $(TOOLNAME))$(EXEEXT): $(LLVM_CONFIG)

ProjLibsOptions += $(shell $(LLVM_CONFIG) --libs     $(LINK_COMPONENTS))
ProjLibsPaths   += $(LLVM_CONFIG) \
                  $(shell $(LLVM_CONFIG) --libfiles $(LINK_COMPONENTS))
endif
endif

###############################################################################
# Library Build Rules: Four ways to build a library
###############################################################################

#---------------------------------------------------------
# Bytecode Module Targets:
#   If the user set MODULE_NAME then they want to build a
#   bytecode module from the sources. We compile all the
#   sources and link it together into a single bytecode
#   module.
#---------------------------------------------------------

ifdef MODULE_NAME
ifeq ($(strip $(LLVMGCC)),)
$(warning Modules require llvm-gcc but no llvm-gcc is available ****)
else

Module     := $(LibDir)/$(MODULE_NAME).bc
LinkModule := $(LLVMLD) -L$(CFERuntimeLibDir) -r


ifdef EXPORTED_SYMBOL_FILE
LinkModule += -internalize-public-api-file=$(EXPORTED_SYMBOL_FILE)
endif

$(Module): $(BUILT_SOURCES) $(ObjectsBC) $(LibDir)/.dir $(LLVMLD)
	$(Echo) Building $(BuildMode) Bytecode Module $(notdir $@)
	$(Verb) $(LinkModule) -o $@ $(ObjectsBC)

all-local:: $(Module)

clean-local::
ifneq ($(strip $(Module)),)
	-$(Verb) $(RM) -f $(Module)
endif

ifdef BYTECODE_DESTINATION
ModuleDestDir := $(BYTECODE_DESTINATION)
else
ModuleDestDir := $(PROJ_libdir)
endif

ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) Uninstall circumvented with NO_INSTALL
else
DestModule := $(ModuleDestDir)/$(MODULE_NAME).bc

install-module:: $(DestModule)
install-local:: $(DestModule)

$(DestModule): $(ModuleDestDir) $(Module) 
	$(Echo) Installing $(BuildMode) Bytecode Module $(DestModule)
	$(Verb) $(DataInstall) $(Module) $(DestModule)

uninstall-local::
	$(Echo) Uninstalling $(BuildMode) Bytecode Module $(DestModule)
	-$(Verb) $(RM) -f $(DestModule)
endif

endif
endif

# if we're building a library ...
ifdef LIBRARYNAME

# Make sure there isn't any extranous whitespace on the LIBRARYNAME option
LIBRARYNAME := $(strip $(LIBRARYNAME))
ifdef LOADABLE_MODULE
LibName.LA := $(LibDir)/$(LIBRARYNAME).la
else
LibName.LA := $(LibDir)/lib$(LIBRARYNAME).la
endif
LibName.A  := $(LibDir)/lib$(LIBRARYNAME).a
LibName.O  := $(LibDir)/$(LIBRARYNAME).o
LibName.BCA:= $(LibDir)/lib$(LIBRARYNAME).bca

#---------------------------------------------------------
# Shared Library Targets:
#   If the user asked for a shared library to be built
#   with the SHARED_LIBRARY variable, then we provide
#   targets for building them.
#---------------------------------------------------------
ifdef SHARED_LIBRARY

all-local:: $(LibName.LA)

ifdef LINK_LIBS_IN_SHARED
ifdef LOADABLE_MODULE
SharedLibKindMessage := "Loadable Module"
else
SharedLibKindMessage := "Shared Library"
endif
$(LibName.LA): $(ObjectsLO) $(ProjLibsPaths) $(LLVMLibsPaths) $(LibDir)/.dir
	$(Echo) Linking $(BuildMode) $(SharedLibKindMessage) \
	  $(LIBRARYNAME)$(SHLIBEXT)
	$(Verb) $(LTLink) -o $@ $(ObjectsLO) $(ProjLibsOptions) \
	  $(LLVMLibsOptions)
	$(Verb) $(LTInstall) $@ $(LibDir)
else
$(LibName.LA): $(ObjectsLO) $(LibDir)/.dir
	$(Echo) Linking $(BuildMode) Shared Library $(LIBRARYNAME)$(SHLIBEXT)
	$(Verb) $(LTLink) -o $@ $(ObjectsLO)
	$(Verb) $(LTInstall) $@ $(LibDir)
endif

clean-local::
ifneq ($(strip $(LibName.LA)),)
	-$(Verb) $(RM) -f $(LibName.LA)
endif

ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) Uninstall circumvented with NO_INSTALL
else
DestSharedLib = $(PROJ_libdir)/lib$(LIBRARYNAME)$(SHLIBEXT)

install-local:: $(DestSharedLib)

$(DestSharedLib): $(PROJ_libdir) $(LibName.LA)
	$(Echo) Installing $(BuildMode) Shared Library $(DestSharedLib)
	$(Verb) $(LTInstall) $(LibName.LA) $(DestSharedLib)
	$(Verb) $(LIBTOOL) --finish $(PROJ_libdir)

uninstall-local:: 
	$(Echo) Uninstalling $(BuildMode) Shared Library $(DestSharedLib)
	-$(Verb) $(RM) -f $(PROJ_libdir)/lib$(LIBRARYNAME).*
endif
endif

#---------------------------------------------------------
# Bytecode Library Targets:
#   If the user asked for a bytecode library to be built
#   with the BYTECODE_LIBRARY variable, then we provide 
#   targets for building them.
#---------------------------------------------------------
ifdef BYTECODE_LIBRARY
ifeq ($(strip $(LLVMGCC)),)
$(warning Bytecode libraries require llvm-gcc which could not be found ****)
else

all-local:: $(LibName.BCA)

ifdef EXPORTED_SYMBOL_FILE
BCLinkLib = $(LLVMLD) -L$(CFERuntimeLibDir) \
                     -internalize-public-api-file=$(EXPORTED_SYMBOL_FILE)

$(LibName.BCA): $(ObjectsBC) $(LibDir)/.dir $(LLVMLD) \
                $(LLVMToolDir)/llvm-ar
	$(Echo) Building $(BuildMode) Bytecode Archive $(notdir $@) \
	  "(internalize)"
	$(Verb) $(BCLinkLib) -o $(ObjDir)/$(LIBRARYNAME).o $(ObjectsBC)
	$(Verb) $(RM) -f $@
	$(Verb) $(LArchive) $@ $(ObjDir)/$(LIBRARYNAME).o
else
$(LibName.BCA): $(ObjectsBC) $(LibDir)/.dir \
                $(LLVMToolDir)/llvm-ar
	$(Echo) Building $(BuildMode) Bytecode Archive $(notdir $@)
	$(Verb) $(RM) -f $@
	$(Verb) $(LArchive) $@ $(ObjectsBC)

endif

clean-local::
ifneq ($(strip $(LibName.BCA)),)
	-$(Verb) $(RM) -f $(LibName.BCA)
endif

ifdef BYTECODE_DESTINATION
BytecodeDestDir := $(BYTECODE_DESTINATION)
else
BytecodeDestDir := $(PROJ_libdir)
endif

DestBytecodeLib = $(BytecodeDestDir)/lib$(LIBRARYNAME).a

install-bytecode-local:: $(DestBytecodeLib)

ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) Uninstall circumvented with NO_INSTALL
else
install-local:: $(DestBytecodeLib)

$(DestBytecodeLib): $(BytecodeDestDir) $(LibName.BCA) 
	$(Echo) Installing $(BuildMode) Bytecode Archive $(DestBytecodeLib)
	$(Verb) $(DataInstall) $(LibName.BCA) $(DestBytecodeLib)

uninstall-local::
	$(Echo) Uninstalling $(BuildMode) Bytecode Archive $(DestBytecodeLib)
	-$(Verb) $(RM) -f $(DestBytecodeLib)
endif
endif
endif

#---------------------------------------------------------
# ReLinked Library Targets:
#   If the user explicitly requests a relinked library with
#   BUILD_RELINKED, provide it.  Otherwise, if they specify
#   neither of BUILD_ARCHIVE or DONT_BUILD_RELINKED, give
#   them one.
#---------------------------------------------------------
ifndef BUILD_ARCHIVE
ifndef DONT_BUILD_RELINKED
BUILD_RELINKED = 1
endif
endif

ifdef BUILD_RELINKED

all-local:: $(LibName.O)

$(LibName.O): $(ObjectsO) $(LibDir)/.dir
	$(Echo) Linking $(BuildMode) Object Library $(notdir $@)
	$(Verb) $(LTRelink) -o $@ $(ObjectsO)

clean-local::
ifneq ($(strip $(LibName.O)),)
	-$(Verb) $(RM) -f $(LibName.O)
endif

ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) Uninstall circumvented with NO_INSTALL
else
DestRelinkedLib = $(PROJ_libdir)/$(LIBRARYNAME).o

install-local:: $(DestRelinkedLib)

$(DestRelinkedLib): $(PROJ_libdir) $(LibName.O)
	$(Echo) Installing $(BuildMode) Object Library $(DestRelinkedLib)
	$(Verb) $(LTInstall) $(LibName.O) $(DestRelinkedLib)

uninstall-local::
	$(Echo) Uninstalling $(BuildMode) Object Library $(DestRelinkedLib)
	-$(Verb) $(RM) -f $(DestRelinkedLib)
endif
endif

#---------------------------------------------------------
# Archive Library Targets:
#   If the user wanted a regular archive library built, 
#   then we provide targets for building them.
#---------------------------------------------------------
ifdef BUILD_ARCHIVE

all-local:: $(LibName.A)

$(LibName.A): $(ObjectsO) $(LibDir)/.dir
	$(Echo) Building $(BuildMode) Archive Library $(notdir $@)
	-$(Verb) $(RM) -f $@
	$(Verb) $(Archive) $@ $(ObjectsO)
	$(Verb) $(Ranlib) $@

clean-local::
ifneq ($(strip $(LibName.A)),)
	-$(Verb) $(RM) -f $(LibName.A)
endif

ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) Uninstall circumvented with NO_INSTALL
else
DestArchiveLib := $(PROJ_libdir)/lib$(LIBRARYNAME).a

install-local:: $(DestArchiveLib)

$(DestArchiveLib): $(PROJ_libdir) $(LibName.A)
	$(Echo) Installing $(BuildMode) Archive Library $(DestArchiveLib)
	$(Verb) $(MKDIR) $(PROJ_libdir)
	$(Verb) $(LTInstall) $(LibName.A) $(DestArchiveLib)

uninstall-local::
	$(Echo) Uninstalling $(BuildMode) Archive Library $(DestArchiveLib)
	-$(Verb) $(RM) -f $(DestArchiveLib)
endif
endif

# endif LIBRARYNAME
endif 

###############################################################################
# Tool Build Rules: Build executable tool based on TOOLNAME option
###############################################################################

ifdef TOOLNAME

#---------------------------------------------------------
# Set up variables for building a tool.
#---------------------------------------------------------
ifdef EXAMPLE_TOOL
ToolBuildPath   := $(ExmplDir)/$(strip $(TOOLNAME))$(EXEEXT)
else
ToolBuildPath   := $(ToolDir)/$(strip $(TOOLNAME))$(EXEEXT)
endif

#---------------------------------------------------------
# Provide targets for building the tools
#---------------------------------------------------------
all-local:: $(ToolBuildPath)

clean-local::
ifneq ($(strip $(ToolBuildPath)),)
	-$(Verb) $(RM) -f $(ToolBuildPath)
endif

ifdef EXAMPLE_TOOL
$(ToolBuildPath): $(ExmplDir)/.dir
else
$(ToolBuildPath): $(ToolDir)/.dir
endif

$(ToolBuildPath): $(ObjectsO) $(ProjLibsPaths) $(LLVMLibsPaths)
	$(Echo) Linking $(BuildMode) executable $(TOOLNAME) $(StripWarnMsg)
	$(Verb) $(LTLink) -o $@ $(TOOLLINKOPTS) $(ObjectsO) $(ProjLibsOptions) \
	$(LLVMLibsOptions) $(ExtraLibs) $(TOOLLINKOPTSB) $(LIBS)
	$(Echo) ======= Finished Linking $(BuildMode) Executable $(TOOLNAME) \
          $(StripWarnMsg) 

ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) Uninstall circumvented with NO_INSTALL
else
DestTool = $(PROJ_bindir)/$(TOOLNAME)

install-local:: $(DestTool)

$(DestTool): $(PROJ_bindir) $(ToolBuildPath)
	$(Echo) Installing $(BuildMode) $(DestTool)
	$(Verb) $(ProgInstall) $(ToolBuildPath) $(DestTool)

uninstall-local::
	$(Echo) Uninstalling $(BuildMode) $(DestTool)
	-$(Verb) $(RM) -f $(DestTool)
endif
endif

###############################################################################
# Object Build Rules: Build object files based on sources 
###############################################################################

# FIXME: This should be checking for "if not GCC or ICC", not for "if HP-UX"
ifeq ($(OS),HP-UX)
  DISABLE_AUTO_DEPENDENCIES=1
endif

ifdef SHARED_LIBRARY
PIC_FLAG = "(PIC)"
MAYBE_PIC_Compile.CXX = $(LTCompile.CXX)
MAYBE_PIC_Compile.C = $(LTCompile.C)
else
MAYBE_PIC_Compile.CXX = $(Compile.CXX)
MAYBE_PIC_Compile.C = $(Compile.C)
endif

# Provide rule sets for when dependency generation is enabled
ifndef DISABLE_AUTO_DEPENDENCIES

#---------------------------------------------------------
# Create .lo files in the ObjDir directory from the .cpp and .c files...
#---------------------------------------------------------

DEPEND_OPTIONS = -MMD -MP -MF "$(ObjDir)/$*.d.tmp" \
         -MT "$(ObjDir)/$*.lo" -MT "$(ObjDir)/$*.o" -MT "$(ObjDir)/$*.d"

# If the build succeeded, move the dependency file over.  If it failed, put an
# empty file there.
DEPEND_MOVEFILE = then $(MV) -f "$(ObjDir)/$*.d.tmp" "$(ObjDir)/$*.d"; \
                  else $(RM) "$(ObjDir)/$*.d.tmp"; exit 1; fi

$(ObjDir)/%.lo $(ObjDir)/%.o: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cpp for $(BuildMode) build " $(PIC_FLAG)
	$(Verb) if $(MAYBE_PIC_Compile.CXX) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
	        $(DEPEND_MOVEFILE)

$(ObjDir)/%.lo $(ObjDir)/%.o: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cc for $(BuildMode) build" $(PIC_FLAG)
	$(Verb) if $(MAYBE_PIC_Compile.CXX) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
	        $(DEPEND_MOVEFILE)

$(ObjDir)/%.lo $(ObjDir)/%.o: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.c for $(BuildMode) build" $(PIC_FLAG)
	$(Verb) if $(MAYBE_PIC_Compile.C) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
	        $(DEPEND_MOVEFILE)

#---------------------------------------------------------
# Create .bc files in the ObjDir directory from .cpp .cc and .c files...
#---------------------------------------------------------

$(ObjDir)/%.ll: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES) $(LLVMGXX)
	$(Echo) "Compiling $*.cpp for $(BuildMode) build (bytecode)"
	$(Verb) if $(BCCompile.CXX) -MD -MT $@ -MP -MF "$(ObjDir)/$*.BCCXXd" \
                              $< -o $@ -S -emit-llvm ; \
	then $(MV) -f "$(ObjDir)/$*.BCCXXd" "$(ObjDir)/$*.d"; \
	else $(RM) -f "$(ObjDir)/$*.BCCXXd"; exit 1; fi
	$(call UPGRADE_MSG,$@) 
	$(call UPGRADE_LL,$@)

$(ObjDir)/%.ll: %.cc $(ObjDir)/.dir $(BUILT_SOURCES) $(LLVMGXX)
	$(Echo) "Compiling $*.cc for $(BuildMode) build (bytecode)"
	$(Verb) if $(BCCompile.CXX) -MD -MT $@ -MP -MF "$(ObjDir)/$*.BCCXXd" \
                              $< -o $@ -S -emit-llvm ; \
	then $(MV) -f "$(ObjDir)/$*.BCCXXd" "$(ObjDir)/$*.d"; \
	else $(RM) -f "$(ObjDir)/$*.BCCXXd"; exit 1; fi
	$(call UPGRADE_MSG,$@) 
	$(call UPGRADE_LL,$@)

$(ObjDir)/%.ll: %.c $(ObjDir)/.dir $(BUILT_SOURCES) $(LLVMGCC)
	$(Echo) "Compiling $*.c for $(BuildMode) build (bytecode)"
	$(Verb) if $(BCCompile.C) -MD -MT $@ -MP -MF "$(ObjDir)/$*.BCCd" \
                            $< -o $@ -S -emit-llvm ; \
	then $(MV) -f "$(ObjDir)/$*.BCCd" "$(ObjDir)/$*.d"; \
	else $(RM) -f "$(ObjDir)/$*.BCCd"; exit 1; fi
	$(call UPGRADE_MSG,$@) 
	$(call UPGRADE_LL,$@)

# Provide alternate rule sets if dependencies are disabled
else

$(ObjDir)/%.lo $(ObjDir)/%.o: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cpp for $(BuildMode) build" $(PIC_FLAG)
	$(MAYBE_PIC_Compile.CXX) $< -o $@ 

$(ObjDir)/%.lo $(ObjDir)/%.o: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cc for $(BuildMode) build" $(PIC_FLAG)
	$(MAYBE_PIC_Compile.CXX) $< -o $@ 

$(ObjDir)/%.lo $(ObjDir)/%.o: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.c for $(BuildMode) build" $(PIC_FLAG)
	$(MAYBE_PIC_Compile.C) $< -o $@ 

$(ObjDir)/%.ll: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES) $(LLVMGXX)
	$(Echo) "Compiling $*.cpp for $(BuildMode) build (bytecode)"
	$(BCCompile.CXX) $< -o $@ -S -emit-llvm
	$(call UPGRADE_MSG,$@) 
	$(call UPGRADE_LL,$@)

$(ObjDir)/%.ll: %.cc $(ObjDir)/.dir $(BUILT_SOURCES) $(LLVMGXX)
	$(Echo) "Compiling $*.cc for $(BuildMode) build (bytecode)"
	$(BCCompile.CXX) $< -o $@ -S -emit-llvm
	$(call UPGRADE_MSG,$@) 
	$(call UPGRADE_LL,$@)

$(ObjDir)/%.ll: %.c $(ObjDir)/.dir $(BUILT_SOURCES) $(LLVMGCC)
	$(Echo) "Compiling $*.c for $(BuildMode) build (bytecode)"
	$(BCCompile.C) $< -o $@ -S -emit-llvm
	$(call UPGRADE_MSG,@) 
	$(call UPGRADE_LL,@)

endif


## Rules for building preprocessed (.i/.ii) outputs.
$(BuildMode)/%.ii: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cpp for $(BuildMode) build to .ii file"
	$(Verb) $(Preprocess.CXX) $< -o $@

$(BuildMode)/%.ii: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cc for $(BuildMode) build to .ii file"
	$(Verb) $(Preprocess.CXX) $< -o $@

$(BuildMode)/%.i: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.c for $(BuildMode) build to .i file"
	$(Verb) $(Preprocess.C) $< -o $@


$(ObjDir)/%.s: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cpp to asm for $(BuildMode) build" $(PIC_FLAG)
	$(MAYBE_PIC_Compile.CXX) $< -o $@ -S

$(ObjDir)/%.s: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cc to asm for $(BuildMode) build" $(PIC_FLAG)
	$(MAYBE_PIC_Compile.CXX) $< -o $@ -S

$(ObjDir)/%.s: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.c to asm for $(BuildMode) build" $(PIC_FLAG)
	$(MAYBE_PIC_Compile.C) $< -o $@ -S


# make the C and C++ compilers strip debug info out of bytecode libraries.
ifdef DEBUG_RUNTIME
$(ObjectsBC): $(ObjDir)/%.bc: $(ObjDir)/%.ll $(LLVMAS) $(LOPT)
	$(Echo) "Compiling $*.ll to $*.bc for $(BuildMode) build (bytecode)"
	$(Verb) $(LLVMAS) $< -o - | $(LOPT) -std-compile-opts -o $@ -f
else
$(ObjectsBC): $(ObjDir)/%.bc: $(ObjDir)/%.ll $(LLVMAS) $(LOPT)
	$(Echo) "Compiling $*.ll to $*.bc for $(BuildMode) build (bytecode)"
	$(Verb) $(LLVMAS) $< -o - | \
	   $(LOPT) -std-compile-opts -strip-debug -o $@ -f
endif


#---------------------------------------------------------
# Provide rule to build .bc files from .ll sources,
# regardless of dependencies
#---------------------------------------------------------
$(ObjDir)/%.bc: %.ll $(ObjDir)/.dir $(LLVMAS)
	$(Echo) "Compiling $*.ll for $(BuildMode) build"
	$(Verb) $(LLVMAS) $< -f -o $@

###############################################################################
# TABLEGEN: Provide rules for running tblgen to produce *.inc files
###############################################################################

ifdef TARGET

TDFiles := $(strip $(wildcard $(PROJ_SRC_DIR)/*.td) \
           $(LLVM_SRC_ROOT)/lib/Target/Target.td \
           $(LLVM_SRC_ROOT)/lib/Target/TargetCallingConv.td \
           $(LLVM_SRC_ROOT)/lib/Target/TargetSelectionDAG.td \
           $(LLVM_SRC_ROOT)/include/llvm/CodeGen/ValueTypes.td) \
           $(wildcard $(LLVM_SRC_ROOT)/include/llvm/Intrinsics*.td)
INCFiles := $(filter %.inc,$(BUILT_SOURCES))
INCTMPFiles := $(INCFiles:%=$(ObjDir)/%.tmp)
.PRECIOUS: $(INCTMPFiles) $(INCFiles)

# All of these files depend on tblgen and the .td files.
$(INCTMPFiles) : $(TBLGEN) $(TDFiles)

# INCFiles rule: All of the tblgen generated files are emitted to 
# $(ObjDir)/%.inc.tmp, instead of emitting them directly to %.inc.  This allows
# us to only "touch" the real file if the contents of it change.  IOW, if
# tblgen is modified, all of the .inc.tmp files are regereated, but no
# dependencies of the .inc files are, unless the contents of the .inc file
# changes.
$(INCFiles) : %.inc : $(ObjDir)/%.inc.tmp
	$(Verb) $(CMP) -s $@ $< || $(CP) $< $@

$(TARGET:%=$(ObjDir)/%GenRegisterNames.inc.tmp): \
$(ObjDir)/%GenRegisterNames.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) register names with tblgen"
	$(Verb) $(TableGen) -gen-register-enums -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenRegisterInfo.h.inc.tmp): \
$(ObjDir)/%GenRegisterInfo.h.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) register information header with tblgen"
	$(Verb) $(TableGen) -gen-register-desc-header -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenRegisterInfo.inc.tmp): \
$(ObjDir)/%GenRegisterInfo.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) register info implementation with tblgen"
	$(Verb) $(TableGen) -gen-register-desc -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenInstrNames.inc.tmp): \
$(ObjDir)/%GenInstrNames.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) instruction names with tblgen"
	$(Verb) $(TableGen) -gen-instr-enums -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenInstrInfo.inc.tmp): \
$(ObjDir)/%GenInstrInfo.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) instruction information with tblgen"
	$(Verb) $(TableGen) -gen-instr-desc -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenAsmWriter.inc.tmp): \
$(ObjDir)/%GenAsmWriter.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) assembly writer with tblgen"
	$(Verb) $(TableGen) -gen-asm-writer -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenAsmWriter1.inc.tmp): \
$(ObjDir)/%GenAsmWriter1.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) assembly writer #1 with tblgen"
	$(Verb) $(TableGen) -gen-asm-writer -asmwriternum=1 -o $(call SYSPATH, $@) $< 

$(TARGET:%=$(ObjDir)/%GenCodeEmitter.inc.tmp): \
$(ObjDir)/%GenCodeEmitter.inc.tmp: %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) code emitter with tblgen"
	$(Verb) $(TableGen) -gen-emitter -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenDAGISel.inc.tmp): \
$(ObjDir)/%GenDAGISel.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) DAG instruction selector implementation with tblgen"
	$(Verb) $(TableGen) -gen-dag-isel -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenFastISel.inc.tmp): \
$(ObjDir)/%GenFastISel.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) \"fast\" instruction selector implementation with tblgen"
	$(Verb) $(TableGen) -gen-fast-isel -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenSubtarget.inc.tmp): \
$(ObjDir)/%GenSubtarget.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) subtarget information with tblgen"
	$(Verb) $(TableGen) -gen-subtarget -o $(call SYSPATH, $@) $<

$(TARGET:%=$(ObjDir)/%GenCallingConv.inc.tmp): \
$(ObjDir)/%GenCallingConv.inc.tmp : %.td $(ObjDir)/.dir
	$(Echo) "Building $(<F) calling convention information with tblgen"
	$(Verb) $(TableGen) -gen-callingconv -o $(call SYSPATH, $@) $<

clean-local::
	-$(Verb) $(RM) -f $(INCFiles)

endif

###############################################################################
# LEX AND YACC: Provide rules for generating sources with lex and yacc
###############################################################################

#---------------------------------------------------------
# Provide rules for generating a .cpp source file from 
# (f)lex input sources. 
#---------------------------------------------------------

LexFiles  := $(filter %.l,$(Sources))

ifneq ($(LexFiles),)

# Cancel built-in rules for lex
%.c: %.l
%.cpp: %.l

all:: $(LexFiles:%.l=$(PROJ_SRC_DIR)/%.cpp.cvs)

# Note the extra sed filtering here, used to cut down on the warnings emited 
# by GCC.  The last line is a gross hack to work around flex aparently not 
# being able to resize the buffer on a large token input.  Currently, for 
# uninitialized string buffers in LLVM we can generate very long tokens, so 
# this is a hack around it.
# FIXME.  (f.e. char Buffer[10000] )
$(PROJ_SRC_DIR)/%.cpp: $(PROJ_SRC_DIR)/%.l
	$(Echo) Flexing $*.l
	$(Verb) $(FLEX) -t $(PROJ_SRC_DIR)/$*.l | \
	$(SED) 's/void yyunput/inline void yyunput/' | \
	$(SED) 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' | \
	$(SED) 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' \
	  > $(PROJ_SRC_DIR)/$*.cpp

# IFF the .l file has changed since it was last checked into SVN, copy the .l
# file to .l.cvs and the generated .cpp file to .cpp.cvs.  We use this mechanism
# so that people without flex can build LLVM by copying the .cvs files to the 
# source location and building them.
$(LexFiles:%.l=$(PROJ_SRC_DIR)/%.cpp.cvs): \
$(PROJ_SRC_DIR)/%.cpp.cvs: $(PROJ_SRC_DIR)/%.cpp
	$(Verb) $(CMP) -s $(PROJ_SRC_DIR)/$*.l $(PROJ_SRC_DIR)/$*.l.cvs || \
      ($(CP) $< $@; $(CP) $(PROJ_SRC_DIR)/$*.l $(PROJ_SRC_DIR)/$*.l.cvs)

$(LexFiles:%.l=$(ObjDir)/%.o) : \
$(ObjDir)/%.o : $(PROJ_SRC_DIR)/%.cpp

clean-local::
	-$(Verb) $(RM) -f $(LexOutput)

endif

#---------------------------------------------------------
# Provide rules for generating a .cpp and .h source files 
# from yacc (bison) input sources.
#---------------------------------------------------------

YaccFiles  := $(filter %.y,$(Sources))
ifneq ($(YaccFiles),)

.PRECIOUS: $(YaccOutput)

all:: $(YaccFiles:%.y=$(PROJ_SRC_DIR)/%.cpp.cvs)

# Cancel built-in rules for yacc
%.c: %.y 
%.cpp: %.y
%.h: %.y

# Rule for building the bison based parsers...
ifneq ($(BISON),)
$(PROJ_SRC_DIR)/%.cpp $(PROJ_SRC_DIR)/%.h : $(PROJ_SRC_DIR)/%.y
	$(Echo) "Bisoning $*.y"
	$(Verb) $(BISON) -v -d -p $(<F:%Parser.y=%) -o $*.tab.c $<
	$(Verb) $(MV) -f $*.tab.c $(PROJ_SRC_DIR)/$*.cpp
	$(Verb) $(MV) -f $*.tab.h $(PROJ_SRC_DIR)/$*.h

# IFF the .y file has changed since it was last checked into SVN, copy the .y
# file to .y.cvs and the generated .cpp/.h file to .cpp.cvs/.h.cvs.  We use this
# mechanism so that people without flex can build LLVM by copying the .cvs files
# to the source location and building them.
$(YaccFiles:%.y=$(PROJ_SRC_DIR)/%.cpp.cvs): \
$(PROJ_SRC_DIR)/%.cpp.cvs: $(PROJ_SRC_DIR)/%.cpp
	$(Verb) $(CMP) -s $(PROJ_SRC_DIR)/$*.y $(PROJ_SRC_DIR)/$*.y.cvs || \
      ($(CP) $< $@; \
       $(CP) $(PROJ_SRC_DIR)/$*.y $(PROJ_SRC_DIR)/$*.y.cvs; \
       $(CP) $(PROJ_SRC_DIR)/$*.h $(PROJ_SRC_DIR)/$*.h.cvs)

else
$(PROJ_SRC_DIR)/%.cpp : $(PROJ_SRC_DIR)/%.cpp.cvs
	$(Echo) "Bison of $*.y SKIPPED, bison not found -- copying .cpp.cvs"
	$(Verb)$(CP) $(PROJ_SRC_DIR)/$*.cpp.cvs $(PROJ_SRC_DIR)/$*.cpp

$(PROJ_SRC_DIR)/%.h : $(PROJ_SRC_DIR)/%.h.cvs
	$(Echo) "Bison of $*.y SKIPPED, bison not found -- copying .h.cvs"
	$(Verb)$(CP) $(PROJ_SRC_DIR)/$*.h.cvs $(PROJ_SRC_DIR)/$*.h
endif


$(YaccFiles:%.y=$(ObjDir)/%.o): $(ObjDir)/%.o : $(PROJ_SRC_DIR)/%.cpp

YaccOutput := $(YaccFiles:%.y=%.output)

clean-local::
	-$(Verb) $(RM) -f $(YaccOutput)
endif

###############################################################################
# OTHER RULES: Other rules needed
###############################################################################

# To create postscript files from dot files...
ifneq ($(DOT),false)
%.ps: %.dot
	$(DOT) -Tps < $< > $@
else
%.ps: %.dot
	$(Echo) "Cannot build $@: The program dot is not installed"
endif

# This rules ensures that header files that are removed still have a rule for
# which they can be "generated."  This allows make to ignore them and
# reproduce the dependency lists.
%.h:: ;
%.hpp:: ;

# Define clean-local to clean the current directory. Note that this uses a
# very conservative approach ensuring that empty variables do not cause 
# errors or disastrous removal.
clean-local::
ifneq ($(strip $(ObjRootDir)),)
	-$(Verb) $(RM) -rf $(ObjRootDir)
endif
	-$(Verb) $(RM) -f core core.[0-9][0-9]* *.o *.d *~ *.flc
ifneq ($(strip $(SHLIBEXT)),) # Extra paranoia - make real sure SHLIBEXT is set
	-$(Verb) $(RM) -f *$(SHLIBEXT)
endif

clean-all-local::
	-$(Verb) $(RM) -rf Debug Release Profile


###############################################################################
# DEPENDENCIES: Include the dependency files if we should
###############################################################################
ifndef DISABLE_AUTO_DEPENDENCIES

# If its not one of the cleaning targets
ifndef IS_CLEANING_TARGET

# Get the list of dependency files
DependFiles := $(basename $(filter %.cpp %.c %.cc, $(Sources)))
DependFiles := $(DependFiles:%=$(PROJ_OBJ_DIR)/$(BuildMode)/%.d)

-include $(DependFiles) ""

endif

endif 

###############################################################################
# CHECK: Running the test suite
###############################################################################

check::
	$(Verb) if test -d "$(PROJ_OBJ_ROOT)/test" ; then \
	  if test -f "$(PROJ_OBJ_ROOT)/test/Makefile" ; then \
	    $(EchoCmd) Running test suite ; \
	    $(MAKE) -C $(PROJ_OBJ_ROOT)/test check-local \
	      TESTSUITE=$(TESTSUITE) ; \
	  else \
	    $(EchoCmd) No Makefile in test directory ; \
	  fi ; \
	else \
	  $(EchoCmd) No test directory ; \
	fi

###############################################################################
# DISTRIBUTION: Handle construction of a distribution tarball
###############################################################################

#------------------------------------------------------------------------
# Define distribution related variables
#------------------------------------------------------------------------
DistName    := $(PROJECT_NAME)-$(PROJ_VERSION)
DistDir     := $(PROJ_OBJ_ROOT)/$(DistName)
TopDistDir  := $(PROJ_OBJ_ROOT)/$(DistName)
DistTarGZip := $(PROJ_OBJ_ROOT)/$(DistName).tar.gz
DistZip     := $(PROJ_OBJ_ROOT)/$(DistName).zip
DistTarBZ2  := $(PROJ_OBJ_ROOT)/$(DistName).tar.bz2
DistAlways  := CREDITS.TXT LICENSE.TXT README.txt README AUTHORS COPYING \
	       ChangeLog INSTALL NEWS Makefile Makefile.common Makefile.rules \
	       Makefile.config.in configure autoconf
DistOther   := $(notdir $(wildcard \
               $(PROJ_SRC_DIR)/*.h \
               $(PROJ_SRC_DIR)/*.td \
               $(PROJ_SRC_DIR)/*.def \
               $(PROJ_SRC_DIR)/*.ll \
               $(PROJ_SRC_DIR)/*.in))
DistSubDirs := $(SubDirs)
DistSources  = $(Sources) $(EXTRA_DIST)
DistFiles    = $(DistAlways) $(DistSources) $(DistOther)

#------------------------------------------------------------------------
# We MUST build distribution with OBJ_DIR != SRC_DIR
#------------------------------------------------------------------------
ifeq ($(PROJ_SRC_DIR),$(PROJ_OBJ_DIR))
dist dist-check dist-clean dist-gzip dist-bzip2 dist-zip ::
	$(Echo) ERROR: Target $@ only available with OBJ_DIR != SRC_DIR

else

#------------------------------------------------------------------------
# Prevent attempt to run dist targets from anywhere but the top level
#------------------------------------------------------------------------
ifneq ($(LEVEL),.)
dist dist-check dist-clean dist-gzip dist-bzip2 dist-zip ::
	$(Echo) ERROR: You must run $@ from $(PROJ_OBJ_ROOT)
else

#------------------------------------------------------------------------
# Provide the top level targets
#------------------------------------------------------------------------

dist-gzip:: $(DistTarGZip)

$(DistTarGZip) : $(TopDistDir)/.makedistdir
	$(Echo) Packing gzipped distribution tar file.
	$(Verb) cd $(PROJ_OBJ_ROOT) ; $(TAR) chf - "$(DistName)" | \
	  $(GZIP) -c > "$(DistTarGZip)"

dist-bzip2:: $(DistTarBZ2)

$(DistTarBZ2) : $(TopDistDir)/.makedistdir
	$(Echo) Packing bzipped distribution tar file.
	$(Verb) cd $(PROJ_OBJ_ROOT) ; $(TAR) chf - $(DistName) | \
	  $(BZIP2) -c >$(DistTarBZ2)

dist-zip:: $(DistZip)

$(DistZip) : $(TopDistDir)/.makedistdir
	$(Echo) Packing zipped distribution file.
	$(Verb) rm -f $(DistZip)
	$(Verb) cd $(PROJ_OBJ_ROOT) ; $(ZIP) -rq $(DistZip) $(DistName)

dist :: $(DistTarGZip) $(DistTarBZ2) $(DistZip) 
	$(Echo) ===== DISTRIBUTION PACKAGING SUCESSFUL =====

DistCheckDir := $(PROJ_OBJ_ROOT)/_distcheckdir

dist-check:: $(DistTarGZip)
	$(Echo) Checking distribution tar file.
	$(Verb) if test -d $(DistCheckDir) ; then \
	  $(RM) -rf $(DistCheckDir) ; \
	fi
	$(Verb) $(MKDIR) $(DistCheckDir)
	$(Verb) cd $(DistCheckDir) && \
	  $(MKDIR) $(DistCheckDir)/build && \
	  $(MKDIR) $(DistCheckDir)/install && \
	  gunzip -c $(DistTarGZip) | $(TAR) xf - && \
	  cd build && \
	  ../$(DistName)/configure --prefix="$(DistCheckDir)/install" \
	    --srcdir=../$(DistName) $(DIST_CHECK_CONFIG_OPTIONS) && \
	  $(MAKE) all && \
	  $(MAKE) check && \
	  $(MAKE) install && \
	  $(MAKE) uninstall && \
	  $(MAKE) dist-clean && \
	  $(EchoCmd) ===== $(DistTarGZip) Ready For Distribution =====

dist-clean::
	$(Echo) Cleaning distribution files
	-$(Verb) $(RM) -rf $(DistTarGZip) $(DistTarBZ2) $(DistZip) $(DistName) \
	  $(DistCheckDir)

endif

#------------------------------------------------------------------------
# Provide the recursive distdir target for building the distribution directory
#------------------------------------------------------------------------
distdir: $(DistDir)/.makedistdir
$(DistDir)/.makedistdir: $(DistSources)
	$(Verb) if test "$(DistDir)" = "$(TopDistDir)" ; then \
	  if test -d "$(DistDir)" ; then \
	    find $(DistDir) -type d ! -perm -200 -exec chmod u+w {} ';'  || \
	      exit 1 ; \
	  fi ; \
	  $(EchoCmd) Removing old $(DistDir) ; \
	  $(RM) -rf $(DistDir); \
	  $(EchoCmd) Making 'all' to verify build ; \
	  $(MAKE) ENABLE_OPTIMIZED=1 all ; \
	fi
	$(Echo) Building Distribution Directory $(DistDir)
	$(Verb) $(MKDIR) $(DistDir) 
	$(Verb) srcdirstrip=`echo "$(PROJ_SRC_DIR)" | sed 's|.|.|g'`; \
	srcrootstrip=`echo "$(PROJ_SRC_ROOT)" | sed 's|.|.|g'`; \
	for file in $(DistFiles) ; do \
	  case "$$file" in \
	    $(PROJ_SRC_DIR)/*) \
	      file=`echo "$$file" | sed "s#^$$srcdirstrip/##"` \
	      ;; \
	    $(PROJ_SRC_ROOT)/*) \
	      file=`echo "$$file" | \
		sed "s#^$$srcrootstrip/##"` \
	      ;; \
	  esac; \
	  if test -f "$(PROJ_SRC_DIR)/$$file" || \
	     test -d "$(PROJ_SRC_DIR)/$$file" ; then \
	    from_dir="$(PROJ_SRC_DIR)" ; \
	  elif test -f "$$file" || test -d "$$file" ; then \
	    from_dir=. ; \
	  fi ; \
	  to_dir=`echo "$$file" | sed -e 's#/[^/]*$$##'` ; \
	  if test "$$to_dir" != "$$file" && test "$$to_dir" != "."; then \
	    to_dir="$(DistDir)/$$dir"; \
	    $(MKDIR) "$$to_dir" ; \
	  else \
	    to_dir="$(DistDir)"; \
	  fi; \
	  mid_dir=`echo "$$file" | sed -n -e 's#^\(.*\)/[^/]*$$#\1#p'`; \
	  if test -n "$$mid_dir" ; then \
            $(MKDIR) "$$to_dir/$$mid_dir" || exit 1; \
          fi ; \
	  if test -d "$$from_dir/$$file"; then \
	    if test -d "$(PROJ_SRC_DIR)/$$file" && \
	       test "$$from_dir" != "$(PROJ_SRC_DIR)" ; then \
	       cd $(PROJ_SRC_DIR) ; \
	       $(TAR) cf - $$file --exclude .svn --exclude CVS | \
	         ( cd $$to_dir ; $(TAR) xf - ) ; \
	       cd $(PROJ_OBJ_DIR) ; \
	    else \
	       cd $$from_dir ; \
	       $(TAR) cf - $$file --exclude .svn --exclude CVS | \
	         ( cd $$to_dir ; $(TAR) xf - ) ; \
	       cd $(PROJ_OBJ_DIR) ; \
	    fi; \
	  elif test -f "$$from_dir/$$file" ; then \
	    $(CP) -p "$$from_dir/$$file" "$(DistDir)/$$file" || exit 1; \
	  elif test -L "$$from_dir/$$file" ; then \
	    $(CP) -pd "$$from_dir/$$file" $(DistDir)/$$file || exit 1; \
	  elif echo "$(DistAlways)" | grep -v "$$file" >/dev/null ; then \
	    $(EchoCmd) "===== WARNING: Distribution Source " \
	      "$$from_dir/$$file Not Found!" ; \
	  elif test "$(Verb)" != '@' ; then \
	    $(EchoCmd) "Skipping non-existent $$from_dir/$$file" ; \
	  fi; \
	done
	$(Verb) for subdir in $(DistSubDirs) ; do \
	  if test "$$subdir" \!= "." ; then \
	    new_distdir="$(DistDir)/$$subdir" ; \
	    test -d "$$new_distdir" || $(MKDIR) "$$new_distdir" || exit 1; \
	    ( cd $$subdir && $(MAKE) ENABLE_OPTIMIZED=1 \
	      DistDir="$$new_distdir" distdir ) || exit 1; \
	  fi; \
	done
	$(Verb) if test "$(DistDir)" = "$(TopDistDir)" ; then \
	  $(EchoCmd) Eliminating CVS/.svn directories from distribution ; \
	  $(RM) -rf `find $(TopDistDir) -type d \( -name CVS -o \
                                  -name .svn \) -print` ;\
	  $(MAKE) dist-hook ; \
	  $(FIND) $(TopDistDir) -type d ! -perm -777 -exec chmod a+rwx {} \; \
	    -o ! -type d ! -perm -444 -links 1 -exec chmod a+r {} \; \
	    -o ! -type d ! -perm -400 -exec chmod a+r {} \; \
	    -o ! -type d ! -perm -444 -exec \
	      $(SHELL) $(INSTALL_SH) -c -m a+r {} {} \; \
	    || chmod -R a+r $(DistDir) ; \
	fi

# This is invoked by distdir target, define it as a no-op to avoid errors if not
# defined by user.
dist-hook::

endif

###############################################################################
# TOP LEVEL - targets only to apply at the top level directory
###############################################################################

ifeq ($(LEVEL),.)

#------------------------------------------------------------------------
# Install support for the project's include files:
#------------------------------------------------------------------------
ifdef NO_INSTALL
install-local::
	$(Echo) Install circumvented with NO_INSTALL
uninstall-local::
	$(Echo) Uninstall circumvented with NO_INSTALL
else
install-local::
	$(Echo) Installing include files
	$(Verb) $(MKDIR) $(PROJ_includedir)
	$(Verb) if test -d "$(PROJ_SRC_ROOT)/include" ; then \
	  cd $(PROJ_SRC_ROOT)/include && \
	  for  hdr in `find . -type f '!' '(' -name '*~' -o -name '.cvsignore' \
	      -o -name '.#*' -o -name '*.in' ')' -print | grep -v CVS | \
	      grep -v .svn` ; do \
	    instdir=`dirname "$(PROJ_includedir)/$$hdr"` ; \
	    if test \! -d "$$instdir" ; then \
	      $(EchoCmd) Making install directory $$instdir ; \
	      $(MKDIR) $$instdir ;\
	    fi ; \
	    $(DataInstall) $$hdr $(PROJ_includedir)/$$hdr ; \
	  done ; \
	fi
ifneq ($(PROJ_SRC_ROOT),$(PROJ_OBJ_ROOT))
	$(Verb) if test -d "$(PROJ_OBJ_ROOT)/include" ; then \
	  cd $(PROJ_OBJ_ROOT)/include && \
	  for hdr in `find . -type f -print | grep -v CVS` ; do \
	    $(DataInstall) $$hdr $(PROJ_includedir)/$$hdr ; \
	  done ; \
	fi
endif

uninstall-local::
	$(Echo) Uninstalling include files
	$(Verb) if [ -d "$(PROJ_SRC_ROOT)/include" ] ; then \
	  cd $(PROJ_SRC_ROOT)/include && \
	    $(RM) -f `find . -path '*/Internal' -prune -o '(' -type f \
	      '!' '(' -name '*~' -o -name '.cvsignore' -o -name '.#*' \
        -o -name '*.in' ')' -print ')' | \
        grep -v CVS | sed 's#^#$(PROJ_includedir)/#'` ; \
	  cd $(PROJ_SRC_ROOT)/include && \
	    $(RM) -f `find . -path '*/Internal' -prune -o '(' -type f -name '*.in' \
      -print ')' | sed 's#\.in$$##;s#^#$(PROJ_includedir)/#'` ; \
	fi
endif
endif

check-line-length:
	@echo searching for overlength lines in files: $(Sources)
	@echo
	@echo
	egrep -n '.{81}' $(Sources) /dev/null

check-for-tabs:
	@echo searching for tabs in files: $(Sources)
	@echo
	@echo
	egrep -n '	' $(Sources) /dev/null

check-footprint:
	@ls -l $(LibDir) | awk '\
	  BEGIN { sum = 0; } \
	        { sum += $$5; } \
	  END   { printf("Libraries: %6.3f MBytes\n", sum/(1024.0*1024.0)); }'
	@ls -l $(ToolDir) | awk '\
	  BEGIN { sum = 0; } \
	        { sum += $$5; } \
	  END   { printf("Programs:  %6.3f MBytes\n", sum/(1024.0*1024.0)); }'
#------------------------------------------------------------------------
# Print out the directories used for building
#------------------------------------------------------------------------
printvars::
	$(Echo) "BuildMode    : " '$(BuildMode)'
	$(Echo) "PROJ_SRC_ROOT: " '$(PROJ_SRC_ROOT)'
	$(Echo) "PROJ_SRC_DIR : " '$(PROJ_SRC_DIR)'
	$(Echo) "PROJ_OBJ_ROOT: " '$(PROJ_OBJ_ROOT)'
	$(Echo) "PROJ_OBJ_DIR : " '$(PROJ_OBJ_DIR)'
	$(Echo) "LLVM_SRC_ROOT: " '$(LLVM_SRC_ROOT)'
	$(Echo) "LLVM_OBJ_ROOT: " '$(LLVM_OBJ_ROOT)'
	$(Echo) "PROJ_prefix  : " '$(PROJ_prefix)'
	$(Echo) "PROJ_bindir  : " '$(PROJ_bindir)'
	$(Echo) "PROJ_libdir  : " '$(PROJ_libdir)'
	$(Echo) "PROJ_etcdir  : " '$(PROJ_etcdir)'
	$(Echo) "PROJ_includedir  : " '$(PROJ_includedir)'
	$(Echo) "UserTargets  : " '$(UserTargets)'
	$(Echo) "ObjMakefiles : " '$(ObjMakefiles)'
	$(Echo) "SrcMakefiles : " '$(SrcMakefiles)'
	$(Echo) "ObjDir       : " '$(ObjDir)'
	$(Echo) "LibDir       : " '$(LibDir)'
	$(Echo) "ToolDir      : " '$(ToolDir)'
	$(Echo) "ExmplDir     : " '$(ExmplDir)'
	$(Echo) "Sources      : " '$(Sources)'
	$(Echo) "TDFiles      : " '$(TDFiles)'
	$(Echo) "INCFiles     : " '$(INCFiles)'
	$(Echo) "INCTMPFiles  : " '$(INCTMPFiles)'
	$(Echo) "PreConditions: " '$(PreConditions)'
	$(Echo) "Compile.CXX  : " '$(Compile.CXX)'
	$(Echo) "Compile.C    : " '$(Compile.C)'
	$(Echo) "Archive      : " '$(Archive)'
	$(Echo) "YaccFiles    : " '$(YaccFiles)'
	$(Echo) "LexFiles     : " '$(LexFiles)'
	$(Echo) "Module       : " '$(Module)'
	$(Echo) "FilesToConfig: " '$(FilesToConfigPATH)'
	$(Echo) "SubDirs      : " '$(SubDirs)'
	$(Echo) "ProjLibsPaths: " '$(ProjLibsPaths)'
	$(Echo) "ProjLibsOptions: " '$(ProjLibsOptions)'