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 unittests
TopLevelTargets  := check dist dist-check dist-clean dist-gzip dist-bzip2 \
                    dist-zip unittests
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 .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)

# FIXME: The {PIC16,MSP430}/AsmPrinter line here is a hack to force a reconfigure to pick
# up AsmPrinter changes. Remove it after a reasonable delay from 2009-08-13.

.PRECIOUS: $(ConfigStatusScript)
$(ConfigStatusScript): $(ConfigureScript) $(LLVM_SRC_ROOT)/lib/Target/PIC16/AsmPrinter/Makefile $(LLVM_SRC_ROOT)/lib/Target/MSP430/AsmPrinter/Makefile
	$(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

###############################################################################
# LLVMC: Provide rules for compiling llvmc plugins
###############################################################################

ifdef LLVMC_PLUGIN

LIBRARYNAME := $(patsubst %,plugin_llvmc_%,$(LLVMC_PLUGIN))
CPP.Flags += -DLLVMC_PLUGIN_NAME=$(LLVMC_PLUGIN)
REQUIRES_EH := 1

ifeq ($(ENABLE_LLVMC_DYNAMIC),1)
  LD.Flags += -lCompilerDriver
endif

# Build a dynamic library if the user runs `make` directly from the plugin
# directory.
ifndef LLVMC_BUILTIN_PLUGIN
  LOADABLE_MODULE = 1
endif

# TableGen stuff...
ifneq ($(BUILT_SOURCES),)
  LLVMC_BUILD_AUTOGENERATED_INC=1
endif

endif # LLVMC_PLUGIN

ifdef LLVMC_BASED_DRIVER

TOOLNAME = $(LLVMC_BASED_DRIVER)

REQUIRES_EH := 1

ifeq ($(ENABLE_LLVMC_DYNAMIC),1)
  LD.Flags += -lCompilerDriver
else
  LLVMLIBS = CompilerDriver.a
  LINK_COMPONENTS = support system
endif

# Preprocessor magic that generates references to static variables in built-in
# plugins.
ifneq ($(LLVMC_BUILTIN_PLUGINS),)

USEDLIBS += $(patsubst %,plugin_llvmc_%.a,$(LLVMC_BUILTIN_PLUGINS))

LLVMC_BUILTIN_PLUGIN_1 = $(word 1, $(LLVMC_BUILTIN_PLUGINS))
LLVMC_BUILTIN_PLUGIN_2 = $(word 2, $(LLVMC_BUILTIN_PLUGINS))
LLVMC_BUILTIN_PLUGIN_3 = $(word 3, $(LLVMC_BUILTIN_PLUGINS))
LLVMC_BUILTIN_PLUGIN_4 = $(word 4, $(LLVMC_BUILTIN_PLUGINS))
LLVMC_BUILTIN_PLUGIN_5 = $(word 5, $(LLVMC_BUILTIN_PLUGINS))

ifneq ($(LLVMC_BUILTIN_PLUGIN_1),)
CPP.Flags += -DLLVMC_BUILTIN_PLUGIN_1=$(LLVMC_BUILTIN_PLUGIN_1)
endif

ifneq ($(LLVMC_BUILTIN_PLUGIN_2),)
CPP.Flags += -DLLVMC_BUILTIN_PLUGIN_2=$(LLVMC_BUILTIN_PLUGIN_2)
endif

ifneq ($(LLVMC_BUILTIN_PLUGIN_3),)
CPP.Flags += -DLLVMC_BUILTIN_PLUGIN_3=$(LLVMC_BUILTIN_PLUGIN_3)
endif

ifneq ($(LLVMC_BUILTIN_PLUGIN_4),)
CPP.Flags += -DLLVMC_BUILTIN_PLUGIN_4=$(LLVMC_BUILTIN_PLUGIN_4)
endif

ifneq ($(LLVMC_BUILTIN_PLUGIN_5),)
CPP.Flags += -DLLVMC_BUILTIN_PLUGIN_5=$(LLVMC_BUILTIN_PLUGIN_5)
endif

endif

endif # LLVMC_BASED_DRIVER

###############################################################################
# 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.
ifndef OPTIMIZE_OPTION
  ifneq ($(HOST_OS),MingW)
    OPTIMIZE_OPTION := -O3
  else
    OPTIMIZE_OPTION := -O2
  endif
endif

ifeq ($(ENABLE_OPTIMIZED),1)
  BuildMode := Release
  # Don't use -fomit-frame-pointer on Darwin or FreeBSD.
  ifneq ($(HOST_OS),FreeBSD)
  ifneq ($(HOST_OS),Darwin)
    OmitFramePointer := -fomit-frame-pointer
  endif
  endif

  # Darwin requires -fstrict-aliasing to be explicitly enabled.
  # Avoid -fstrict-aliasing on Darwin for now, there are unresolved issues
  # with -fstrict-aliasing and ipa-type-escape radr://6756684
  #ifeq ($(HOST_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

ifeq ($(ENABLE_PROFILING),1)
  BuildMode := $(BuildMode)+Profile
  CXX.Flags := $(filter-out -fomit-frame-pointer,$(CXX.Flags)) -pg -g
  C.Flags   := $(filter-out -fomit-frame-pointer,$(C.Flags)) -pg -g
  LD.Flags  := $(filter-out -fomit-frame-pointer,$(LD.Flags)) -pg -g
  KEEP_SYMBOLS := 1
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

ifdef REQUIRES_FRAME_POINTER
  CXX.Flags := $(filter-out -fomit-frame-pointer,$(CXX.Flags))
  C.Flags   := $(filter-out -fomit-frame-pointer,$(C.Flags))
  LD.Flags  := $(filter-out -fomit-frame-pointer,$(LD.Flags))
endif

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

ifdef ENABLE_COVERAGE
  BuildMode := $(BuildMode)+Coverage
  CXX.Flags += -ftest-coverage -fprofile-arcs
  C.Flags   += -ftest-coverage -fprofile-arcs
endif

# If DISABLE_ASSERTIONS=1 is specified (make command line or configured),
# then disable assertions by defining the appropriate preprocessor symbols.
ifdef DISABLE_ASSERTIONS
  # Indicate that assertions are turned off using a minus sign
  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 -DXDEBUG
endif

# LOADABLE_MODULE implies several other things so we force them to be
# defined/on.
ifdef LOADABLE_MODULE
  SHARED_LIBRARY := 1
  LINK_LIBS_IN_SHARED := 1
endif

ifdef SHARED_LIBRARY
  ENABLE_PIC := 1
  PIC_FLAG = "(PIC)"
endif

ifeq ($(ENABLE_PIC),1)
  ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
    # Nothing. Win32 defaults to PIC and warns when given -fPIC
  else
    ifeq ($(HOST_OS),Darwin)
      # Common symbols not allowed in dylib files
      CXX.Flags += -fno-common
      C.Flags   += -fno-common
    else
      # Linux and others; pass -fPIC
      CXX.Flags += -fPIC
      C.Flags   += -fPIC
    endif
  endif
else
  ifeq ($(HOST_OS),Darwin)
      CXX.Flags += -mdynamic-no-pic
      C.Flags   += -mdynamic-no-pic
  endif
endif

CXX.Flags     += -Woverloaded-virtual
CPP.BaseFlags += $(CPP.Defines)
AR.Flags      := cru

# 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

ifeq ($(HOST_OS),MingW)
  ifeq ($(LLVM_CROSS_COMPILING),1)
    # Work around http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=525016
    ifdef TOOLNAME
      LD.Flags += -Wl,--allow-multiple-definition
    endif
  endif
endif

ifdef ENABLE_EXPENSIVE_CHECKS
  # GNU libstdc++ uses RTTI if you define _GLIBCXX_DEBUG, which we did above.
  # See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40160
  CXX.Flags := $(filter-out -fno-rtti,$(CXX.Flags))
  CXXFLAGS := $(filter-out -fno-rtti,$(CXXFLAGS))
endif

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

ObjRootDir  := $(PROJ_OBJ_DIR)/$(BuildMode)
ObjDir      := $(ObjRootDir)
LibDir      := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib
ToolDir     := $(PROJ_OBJ_ROOT)/$(BuildMode)/bin
ExmplDir    := $(PROJ_OBJ_ROOT)/$(BuildMode)/examples
LLVMLibDir  := $(LLVM_OBJ_ROOT)/$(BuildMode)/lib
LLVMToolDir := $(LLVM_OBJ_ROOT)/$(BuildMode)/bin
LLVMExmplDir:= $(LLVM_OBJ_ROOT)/$(BuildMode)/examples
CFERuntimeLibDir := $(LLVMGCCDIR)/lib

#--------------------------------------------------------------------
# Full Paths To Compiled Tools and Utilities
#--------------------------------------------------------------------
EchoCmd  = $(ECHO) llvm[$(MAKELEVEL)]:
Echo     = @$(EchoCmd)
ifndef LLVMAS
LLVMAS   := $(LLVMToolDir)/llvm-as$(EXEEXT)
endif
ifndef TBLGEN
  ifeq ($(LLVM_CROSS_COMPILING),1)
    TBLGEN   := $(BuildLLVMToolDir)/tblgen$(BUILD_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 ($(LLVMGCC_MAJVERS),3)
LLVMGCCWITHPATH  := PATH="$(LLVMToolDir):$(PATH)" $(LLVMGCC)
LLVMGXXWITHPATH  := PATH="$(LLVMToolDir):$(PATH)" $(LLVMGXX)
else
LLVMGCCWITHPATH  := $(LLVMGCC)
LLVMGXXWITHPATH  := $(LLVMGXX)
endif

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

ifeq ($(HOST_OS),Darwin)
  DARWIN_VERSION := `sw_vers -productVersion`
  # Strip a number like 10.4.7 to 10.4
  DARWIN_VERSION := $(shell echo $(DARWIN_VERSION)| sed -E 's/(10.[0-9]).*/\1/')
  # Get "4" out of 10.4 for later pieces in the makefile.
  DARWIN_MAJVERS := $(shell echo $(DARWIN_VERSION)| sed -E 's/10.([0-9]).*/\1/')

  SharedLinkOptions=-Wl,-flat_namespace -Wl,-undefined -Wl,suppress \
                    -dynamiclib -mmacosx-version-min=$(DARWIN_VERSION)
else
  ifeq ($(HOST_OS),Cygwin)
    SharedLinkOptions=-shared -nostdlib -Wl,--export-all-symbols \
                      -Wl,--enable-auto-import -Wl,--enable-auto-image-base
  else
    SharedLinkOptions=-shared
  endif
endif

ifeq ($(TARGET_OS),Darwin)
  TargetCommonOpts += -mmacosx-version-min=$(DARWIN_VERSION)
endif

# Adjust LD.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.
ifdef LOADABLE_MODULE
  LD.Flags += -module
endif

ifdef SHARED_LIBRARY
ifneq ($(DARWIN_MAJVERS),4)
  LD.Flags += $(RPATH) -Wl,$(LibDir)
endif
endif

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

# Adjust settings for verbose mode
ifndef VERBOSE
  Verb := @
  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
ifneq ($(HOST_OS),Darwin)
ifneq ($(DARWIN_MAJVERS),4)
ifdef TOOLNAME
ifdef EXAMPLE_TOOL
  LD.Flags += $(RPATH) -Wl,$(ExmplDir) $(RDYNAMIC)
else
  LD.Flags += $(RPATH) -Wl,$(ToolDir) $(RDYNAMIC)
endif
endif
endif
endif

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

ifndef NO_PEDANTIC
CompileCommonOpts += -pedantic -Wno-long-long
endif
CompileCommonOpts += -Wall -W -Wno-unused-parameter -Wwrite-strings \
                     $(EXTRA_OPTIONS)

ifeq ($(HOST_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)
  ifdef UNIVERSAL_SDK_PATH
    CompileCommonOpts += -isysroot $(UNIVERSAL_SDK_PATH)
  endif

  # Building universal cannot compute dependencies automatically.
  DISABLE_AUTO_DEPENDENCIES=1
else
  ifeq ($(TARGET_OS),Darwin)
    ifeq ($(ARCH),x86_64)
      TargetCommonOpts = -m64
    else
      ifeq ($(ARCH),x86)
        TargetCommonOpts = -m32
      endif
    endif
  endif
endif

ifeq ($(HOST_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) $(CFLAGS) $(CPPFLAGS) \
                  $(TargetCommonOpts) $(CompileCommonOpts) -c
  Compile.CXX   = $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) \
		  $(CPPFLAGS) \
                  $(TargetCommonOpts) $(CompileCommonOpts) -c
  Preprocess.CXX= $(BUILD_CXX) $(CPP.Flags) $(CPPFLAGS) $(TargetCommonOpts) \
                  $(CompileCommonOpts) $(CXX.Flags) -E
  Link          = $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) \
		  $(LDFLAGS) \
                  $(TargetCommonOpts) $(CompileCommonOpts) $(LD.Flags) $(Strip)
else
  Compile.C     = $(CC) $(CPP.Flags) $(C.Flags) $(CFLAGS) $(CPPFLAGS) \
                  $(TargetCommonOpts) $(CompileCommonOpts) -c
  Compile.CXX   = $(CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) $(CPPFLAGS) \
                  $(TargetCommonOpts) $(CompileCommonOpts) -c
  Preprocess.CXX= $(CXX) $(CPP.Flags) $(TargetCommonOpts) $(CPPFLAGS) \
                  $(CompileCommonOpts) $(CXX.Flags) -E
  Link          = $(CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) $(LDFLAGS) \
                  $(TargetCommonOpts)  $(CompileCommonOpts) $(LD.Flags) $(Strip)
endif

BCCompile.C   = $(LLVMGCCWITHPATH) $(CPP.Flags) $(C.Flags) $(CFLAGS) \
		$(CPPFLAGS) \
                $(TargetCommonOpts) $(CompileCommonOpts)
Preprocess.C  = $(CC) $(CPP.Flags) $(C.Flags) $(CPPFLAGS) \
                $(TargetCommonOpts) $(CompileCommonOpts) -E

BCCompile.CXX = $(LLVMGXXWITHPATH) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) \
		$(CPPFLAGS) \
                $(TargetCommonOpts) $(CompileCommonOpts)

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, $(LLVM_SRC_ROOT)/include) \
                -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))
else
  Sources := $(SOURCES)
endif

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

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

ObjectsO  := $(BaseNameSources:%=$(ObjDir)/%.o)
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_libdir) $(PROJ_includedir) $(PROJ_etcdir)::
	$(Verb) $(MKDIR) $@

# 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))
$(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 $$dir $@ ) || exit 1; \
	done
else
$(RecursiveTargets)::
	$(Verb) for dir in $(DIRS); do \
	  ($(MAKE) -C $$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 OPTIONAL_PARALLEL_DIRS options for optional parallel construction
#-----------------------------------------------------------
ifdef OPTIONAL_PARALLEL_DIRS
  PARALLEL_DIRS += $(foreach T,$(OPTIONAL_PARALLEL_DIRS),$(shell test -d $(PROJ_SRC_DIR)/$(T) && echo "$(T)"))
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)

LLVMLibsOptions += $(shell $(LLVM_CONFIG) --libs     $(LINK_COMPONENTS))
LLVMLibsPaths   += $(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 extraneous whitespace on the LIBRARYNAME option
LIBRARYNAME := $(strip $(LIBRARYNAME))
ifdef LOADABLE_MODULE
LibName.A  := $(LibDir)/$(LIBRARYNAME).a
LibName.SO := $(LibDir)/$(LIBRARYNAME)$(SHLIBEXT)
else
LibName.A  := $(LibDir)/lib$(LIBRARYNAME).a
LibName.SO := $(LibDir)/lib$(LIBRARYNAME)$(SHLIBEXT)
endif
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.SO)

ifdef LINK_LIBS_IN_SHARED
ifdef LOADABLE_MODULE