Makefile.rules

#===-- Makefile.rules - Common make rules for LLVM ---------*- Makefile -*--===#
#
#                     The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and 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 tags 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-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
	$(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) ;; \
          *) $(Echo) "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
###############################################################################

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

ifdef ENABLE_PROFILING
  BuildMode := Profile
  CXX.Flags := -O3 -felide-constructors -finline-functions -pg
  C.Flags   := -O3 -pg
  LD.Flags  := -O3 -pg 
else
  ifdef ENABLE_OPTIMIZED
    BuildMode := Release
    # Don't use -fomit-frame-pointer on FreeBSD
    ifneq ($(OS),FreeBSD)
      OmitFramePointer := -fomit-frame-pointer
    endif
    CXX.Flags := -O3 -finline-functions -felide-constructors $(OmitFramePointer)
    C.Flags   := -O3 $(OmitFramePointer)
    LD.Flags  := -O3
  else
    BuildMode := Debug
    CXX.Flags := -g
    C.Flags   := -g
    LD.Flags  := -g 
    KEEP_SYMBOLS := 1
  endif
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
  CXX.Flags += -DNDEBUG
  C.Flags   += -DNDEBUG
else
  CXX.Flags += -D_DEBUG
  C.Flags   += -D_DEBUG
endif

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

#Make Floating point ieee complient on alpha
ifeq ($(ARCH),Alpha)
  CXX.Flags     += -mieee
  CPP.BaseFlags += -mieee
endif

#--------------------------------------------------------------------
# Directory locations
#--------------------------------------------------------------------
ObjDir      := $(PROJ_OBJ_DIR)/$(BuildMode)
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 LIBTOOL
LIBTOOL  := $(LLVM_OBJ_ROOT)/mklib
endif
ifndef LLVMAS
LLVMAS   := $(LLVMToolDir)/llvm-as$(EXEEXT)
endif
ifndef TBLGEN
TBLGEN   := $(LLVMToolDir)/tblgen$(EXEEXT)
endif
ifndef GCCAS
GCCAS    := $(LLVMToolDir)/gccas$(EXEEXT)
endif
ifndef GCCLD
GCCLD    := $(LLVMToolDir)/gccld$(EXEEXT)
endif
ifndef LDIS
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

LLVMGCCWITHPATH  := PATH="$(LLVMToolDir):$(PATH)" $(LLVMGCC)
LLVMGXXWITHPATH  := PATH="$(LLVMToolDir):$(PATH)" $(LLVMGXX)

#--------------------------------------------------------------------
# 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
ifdef SHARED_LIBRARY
  LD.Flags += -rpath $(LibDir)
  ifdef LOADABLE_MODULE
    LD.Flags += -module
  endif
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 := -Wall -W -Wwrite-strings -Wno-unused

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.
ifdef UNIVERSAL
  CompileCommonOpts += \
      -arch i386 -arch ppc -isysroot /Developer/SDKs/MACOSX10.4u.sdk/
  Relink.Flags := -XCClinker -arch -XCClinker i386 -XCClinker -arch \
      -XCClinker ppc -XCClinker \
      -isysroot -XCClinker /Developer/SDKs/MACOSX10.4u.sdk/
  DISABLE_AUTO_DEPENDENCIES=1
endif

# Temporary workaround for a Mac OSX / x86 compatibility issue.
ifeq ($(OS),Darwin)
ifeq ($(ARCH),x86)
  CXX.Flags += -fno-use-cxa-atexit
endif
endif

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

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

Compile.CXX   = $(CXX) $(CPP.Flags) $(CompileCommonOpts) $(CXX.Flags) -c
LTCompile.CXX = $(LIBTOOL) $(LibTool.Flags) --mode=compile $(Compile.CXX)
BCCompile.CXX = $(LLVMGXXWITHPATH) $(CPP.Flags) $(CompileCommonOpts) \
                $(CXX.Flags)
Preprocess.CXX= $(CXX) $(CPP.Flags) $(CompileCommonOpts) $(CXX.Flags) -E
Link          = $(LIBTOOL) $(LibTool.Flags) --mode=link $(CXX) $(CPP.Flags) \
	        $(CXX.Flags) $(CompileCommonOpts) $(LD.Flags) $(Strip)
Relink        = $(LIBTOOL) $(LibTool.Flags) --mode=link $(CXX) $(CPP.Flags) \
                $(CXX.Flags) $(CompileCommonOpts) $(Relink.Flags)
LTInstall     = $(LIBTOOL) $(LibTool.Flags) --mode=install $(INSTALL) \
		$(Install.Flags)
ProgInstall   = $(INSTALL) $(Install.StripFlag) -m 0755 
ScriptInstall = $(INSTALL) -m 0755 
DataInstall   = $(INSTALL) -m 0644
TableGen      = $(TBLGEN) -I $(PROJ_SRC_DIR) -I$(PROJ_SRC_ROOT)/include \
                -I $(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)
$(RecursiveTargets)::
	$(Verb) for dir in $(DIRS); do \
	  if [ ! -f $$dir/Makefile ]; then \
	    $(MKDIR) $$dir; \
	    $(CP) $(PROJ_SRC_DIR)/$$dir/Makefile $$dir/Makefile; \
	  fi; \
	  if [ ! -f $$dir/LLVM_DO_NOT_BUILD ]; then \
	    ($(MAKE) -C $$dir $@ ) || exit 1; \
	  fi ; \
	done
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; \
	  if [ ! -f $$dir/LLVM_DO_NOT_BUILD ]; then \
	    ($(MAKE) -C $$dir $@ ) || exit 0; \
	  fi ; \
	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; \
	if [ ! -f $$dir/LLVM_DO_NOT_BUILD ]; then \
	  $(MAKE) -C $(@D) $(subst $(@D)/.make,,$@) ; \
	fi
endif

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

SubDirs += $(OPTIONAL_DIRS)

$(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 $$dir/Makefile; \
	    fi; \
	    if [ ! -f $$dir/LLVM_DO_NOT_BUILD ]; then \
	      ($(MAKE) -C$$dir $@ ) || exit 1; \
	    fi ; \
	  fi \
	done
endif

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

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

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

#---------------------------------------------------------
# Handle the special "JIT" value for LLVM_LIBS which is a
# shorthand for a bunch of libraries that get the correct
# JIT support for a library or a tool that runs JIT.
#---------------------------------------------------------
ifeq ($(firstword $(LLVMLIBS)),config)
LLVM_CONFIG := $(LLVM_SRC_ROOT)/utils/llvm-config/llvm-config 
LLVMLIBS := $(shell $(LLVM_CONFIG) --libnames $(wordlist 2,9999,$(LLVMLIBS)))
LLVMLIBS := $(patsubst lib%.a,%.a,$(LLVMLIBS))
LLVMLIBS := $(patsubst %.o,%,$(LLVMLIBS))
endif

ifeq ($(LLVMLIBS),JIT)

# Make sure we can get our own symbols in the tool
Link += -dlopen self

# Generic JIT libraries
JIT_LIBS := LLVMInterpreter LLVMJIT LLVMCodeGen LLVMExecutionEngine

# You can enable the X86 JIT on a non-X86 host by setting the flag
# ENABLE_X86_JIT on the make command line. If not, it will still be
# enabled automagically on an X86 host.
ifeq ($(ARCH), x86)
  ENABLE_X86_JIT = 1
endif

# What the X86 JIT requires
ifdef ENABLE_X86_JIT
  JIT_LIBS += LLVMX86 LLVMSelectionDAG
endif

# You can enable the PowerPC JIT on a non-PowerPC host by setting the flag
# ENABLE_PPC_JIT on the make command line. If not, it will still be
# enabled automagically on an PowerPC host.
ifeq ($(ARCH), PowerPC)
  ENABLE_PPC_JIT = 1
endif

# What the PowerPC JIT requires
ifdef ENABLE_PPC_JIT
  JIT_LIBS += LLVMPowerPC LLVMSelectionDAG
endif

# You can enable the Alpha JIT on a non-Alpha host by setting the flag
# ENABLE_ALPHA_JIT on the make command line. If not, it will still be
# enabled automagically on an Alpha host.
ifeq ($(ARCH), Alpha)
  ENABLE_ALPHA_JIT = 1
endif

# What the Alpha JIT requires
ifdef ENABLE_ALPHA_JIT
  JIT_LIBS += LLVMAlpha LLVMSelectionDAG
endif

LLVMLIBS := $(JIT_LIBS) LLVMScalarOpts.a LLVMTransformUtils.a LLVMAnalysis.a \
            LLVMBCReader LLVMTarget.a LLVMCore LLVMSupport.a LLVMbzip2 \
            LLVMSystem.a $(PLATFORMLIBDL)
endif

#---------------------------------------------------------
# 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).
#---------------------------------------------------------
# Some versions of gcc on Alpha produce too many symbols, so use a .a file
ifeq ($(ARCH),Alpha)
USEDLIBS := $(subst LLVMCore, LLVMCore.a, $(USEDLIBS))
LLVMLIBS := $(subst LLVMCore, LLVMCore.a, $(LLVMLIBS))
CORE_IS_ARCHIVE := 1
else
CORE_IS_ARCHIVE := 0
endif

ProjLibsOptions := $(patsubst %.a.o, -l%, $(addsuffix .o, $(USEDLIBS)))
ProjLibsOptions := $(patsubst %.o, $(LibDir)/%.o,  $(ProjLibsOptions))
LLVMLibsOptions := $(patsubst %.a.o, -l%, $(addsuffix .o, $(LLVMLIBS)))
LLVMLibsOptions := $(patsubst %.o, $(LLVMLibDir)/%.o, $(LLVMLibsOptions))
ProjUsedLibs    := $(patsubst %.a.o, lib%.a, $(addsuffix .o, $(USEDLIBS)))
LLVMUsedLibs    := $(patsubst %.a.o, lib%.a, $(addsuffix .o, $(LLVMLIBS)))
ProjLibsPaths   := $(addprefix $(LibDir)/,$(ProjUsedLibs))
LLVMLibsPaths   := $(addprefix $(LLVMLibDir)/,$(LLVMUsedLibs))

###############################################################################
# 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 := $(GCCLD) -L$(CFERuntimeLibDir)


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

$(Module): $(BUILT_SOURCES) $(ObjectsBC) $(LibDir)/.dir $(GCCLD)
	$(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

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

# 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
$(LibName.LA): $(ObjectsLO) $(LibDir)/.dir
	$(Echo) Linking $(BuildMode) Shared Library $(LIBRARYNAME)$(SHLIBEXT)
	$(Verb) $(Link) -o $@ $(ObjectsLO) \
         $(ProjLibsOptions) $(LLVMLibsOptions)
	$(Verb) $(LTInstall) $@ $(LibDir)
else
$(LibName.LA): $(ObjectsLO) $(LibDir)/.dir
	$(Echo) Linking $(BuildMode) Shared Library $(LIBRARYNAME)$(SHLIBEXT)
	$(Verb) $(Link) -o $@ $(ObjectsLO)
	$(Verb) $(LTInstall) $@ $(LibDir)
endif

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

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

#---------------------------------------------------------
# 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 = $(GCCLD) -L$(CFERuntimeLibDir) -internalize-public-api-file=$(EXPORTED_SYMBOL_FILE)

$(LibName.BCA): $(ObjectsBC) $(LibDir)/.dir $(GCCLD) \
                $(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)

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

#---------------------------------------------------------
# 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) $(Relink) -o $@ $(ObjectsO)

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

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

#---------------------------------------------------------
# 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

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 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

#---------------------------------------------------------
# Tell make that we need to rebuild subdirectories before 
# we can link the tool. This affects things like LLI which 
# has library subdirectories.
#---------------------------------------------------------
$(ToolBuildPath): $(addsuffix /.makeall, $(PARALLEL_DIRS))

#---------------------------------------------------------
# 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) $(Link) -o $@ $(TOOLLINKOPTS) $(ObjectsO) $(ProjLibsOptions) \
	$(LLVMLibsOptions) $(ExtraLibs) $(TOOLLINKOPTSB) $(LIBS)
	$(Echo) ======= Finished Linking $(BuildMode) Executable $(TOOLNAME) \
          $(StripWarnMsg) 

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

###############################################################################
# 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

# 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...
#---------------------------------------------------------
ifdef SHARED_LIBRARY

$(ObjDir)/%.lo $(ObjDir)/%.o: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cpp for $(BuildMode) build (PIC)"
	$(Verb) if $(LTCompile.CXX) -MD -MT $@ -MP -MF $(ObjDir)/$*.LACXXd $< -o $@ ;\
	then $(MV) -f "$(ObjDir)/$*.LACXXd" "$(ObjDir)/$*.d"; \
	else $(RM) -f "$(ObjDir)/$*.LACXXd"; exit 1; fi

$(ObjDir)/%.lo $(ObjDir)/%.o: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
	$(Echo) "Compiling $*.cc for $(BuildMode) build (PIC)"
	$(Verb) if $(LTCompile.CXX) -MD -MT $@ -MP -MF $(ObjDir)/$*.LACXXd $< -o $@ ;\
	then $(MV) -f "$(ObjDir)/$*.LACXXd" "$(ObjDir)/$*.d"; \
	else $(RM) -f "$(ObjDir)/$*.LACXXd"; exit 1; fi