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#
# /+\
# +\		Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
# \+/
#
# This file is part of Jam - see jam.c for Copyright information.
#

# The Copyright information in jam.c reads:
#
#/*
# * /+\
# * +\   Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
# * \+/
# *
# * This file is part of jam.
# *
# * License is hereby granted to use this software and distribute it
# * freely, as long as this copyright notice is retained and modifications
# * are clearly marked.
# *
# * ALL WARRANTIES ARE HEREBY DISCLAIMED.
# */

# MODIFIDED version of jam 2.5 Jambase, for the ArgyllCMS project by Graeme W. Gill.
#           These modifications are herebye licensed under the same conditions
#           as as the rest of Jam, as detailed above.
#           Moved to a "Normalized" scheme, where Jamfile UNIX style target paths
#			are converted to platform specific, Jamfile relative, Gristed/SEARCH/LOCATE
#			form internally. Creating the tree is simplified by eliminating the SubDir
#           rule. Better support for MingW, OS X. More comprehensive ruleset.
#           Renamed Jamrules to Jamtop.
#
# JAMBASE - jam 2.5 ruleset providing make(1)-like functionality
#
# Supports UNIX, NT, and VMS.
#
# Special targets defined in this file:
#
# all				- parent of first, shell, files, lib, exe
# first				- first dependent of 'all', for potential initialization
# shell				- parent of all Shell targets 
# files				- parent of all File targets
# lib				- parent of all Library targets
# exe				- parent of all Main targets
# dirs				- parent of all MkDir targets
# install			- parent of all Install targets
# clean				- removes all Shell, File, Library, and Main targets
# uninstall			- removes all Install targets
#		

# Rules defined by this file:
#
# As obj : source.s ;					.s -> .o
# Bulk dir : files ;					populate directory with many files
# Cc obj : src.c : flags : defines : hdrpaths 
#										.c -> .o
# C++ obj : src.cc : flags : defines : hdrpaths
#										.cc -> .o
# Clean clean : sources ;				remove sources with 'jam clean'
# File dest : source ;					copy file
# FileNoClean dest : source ;			copy file, but don't delete dest during clean
# FakeFile dest : source ;				Fudge to say dest is created with source
# Fortran obj.o : source.f ;			.f -> .o
# GenFile target : program args ;		make custom file
# GenFileND target : program args : extra_dependecies ;
#										make custom file, program dependent & args not
# GenFileNND target : program args : extra_dependecies ;
#                                       make custom file, program & args not dependent
# GenFileNNDnc target : program args : extra_dependecies ;
#                                       Same as GenFileNND but don't clean the target.
# CatToFile dest : strings ;			save the arguments to the file
# GuiBin image ;						Mark executable as GUI applications
#                                       (Needs to go before other declarations of image) 
# HardLink target : source ;			make link from source to target
# HdrRule source : headers ;			handle #includes
# InstallInto dir : sources ;			install any files
# InstallBin dir : sources ;			install binaries
# InstallLib dir : sources ;			install files
# InstallShLib dir : sources ;			install files
# InstallFile dir : sources ;			install files
# InstallMan dir : sources ;			install man pages
# InstallShell dir : sources ;			install shell scripts
# Lex source.c : source.l ;				.l -> .c
# Library library : sources : flags : defines : hdrpaths : objects
#										static library from compiled sources
# LibraryFromLibraries lib : libs ;		static library from static libraries
# LibraryFromObjects lib : objects ;	static library from objects
# LinkLibraries images : libraries ;	add static libraries onto Mains
# LinkObjects images : objects ;		add objects onto Mains
# LinkShLibraries images : shlibraries ;	add shared libraries onto Mains
# Main image : sources : flags : defines : hdrpaths : objects : libs : shlibs ;
# 										create exe from compiled sources
# MainsFromSources sources ;			create exes each from their source
# MainFromObjects image : objects : libs : shlibs ;
#										create executable from objects
# MainVariant image : sources : flags : defines : hdrpaths : objects : libs : shlibs ;
# 										create exe from compiled sources with separate named objs
# MainLinkFlags mains : flags ;			add linker flags for object
# MkDir dir ;							make a directory, if not there
# Mod target : mode ;					sets mode of file
# NDepends dest : source ;				make Normalized dependency
# NNoUpdate targ ;						create Normalized target if needed but never update it 
# NIncludes dest : source ;				make Normalized co-dependency
# Object object : sources : flags : defines : hdrpaths ; 	compile object from source
# ObjectCcFlags objects : flags ;		add compiler flags for object
# ObjectPrefCcFlags objects : flags ;	add preference compiler flags for object (overridable)
# ObjectC++Flags objects : flags ;		add compiler flags for object
# ObjectPrefC++Flags objects : flags ;	add preference compiler flags for object (overridable)
# ObjectDefines objects : defines ;		add defines for object
# ObjectHdrs objects : dirs ;			add include directories for object
# ObjectKeep objects ;					mark objects to be kept after library build
# Objects sources : flags : defines : hdrpaths 		compile sources
# PeerInclude dir ;						include peer Jamfile
# FindTop ; 							Set TOP by locating JAMTOP file above SUBDIR
# ProjTop d1 d2 .. ;					Set project TOP
# RmTemps target : sources ;			remove temp sources after target made
# Setuid images ;						mark executables Setuid
#	set SHLINKDEFFILE on for Windows to define exports using .def file.
#	set SHLINKSEARCHEXEPATH true on UNIX/OSX to have applications search exeutable location for it 
# ShLibrary shlib : source ;				link shared library from compiled sources
# ShLibraryFromObjects shlib : objects ;	link shared library from objects
# ShLibraryLibraries shlib : libraries ;	add static libraries onto shared libraries link
# ShLibraryObjects shlib : objects ;		add objects onto shared libraries link
# ShLibraryShLibraries shlib : shlibraries ;	add shared libraries onto shared libraries link
# SoftLink target : source ;			make symlink from source to target
# SubInclude dir ;						include sub Jamfile
# Shell exe : source ;					make a shell executable
# Undefines images : symbols ;			save undef's for linking
# UserObject object : source ;			handle unknown suffixes for Object
# Yacc source.c : source.y ;			.y -> .c
# Aswig : source.i ;					.i -> .h _i.c .hpp 
#
# Utility rules
#
# val = geton var : varname ;				return the value of varname on var 
# paths = NormPaths paths [ : dir ] ;		normalize a set of paths relative to SUBDIR or dir
# paths = NormSrcPaths paths [ : dir ] ;	NormPaths with SRCDIR
# paths = NormDstPaths paths [ : dir ] ;	NormPaths with DSTDIR
# paths = NormSrcTargets paths [ : dir ] ;	normalize source targets, set Grist NOMLOC SEARCH
# paths = NormDstTargets paths [ : dir ] ;	normalize destination targets, set Grist NOMLOC LOCATE
# paths = NormISrcTargets paths [ : dir ] ;	Same as NormSrcTargets but ignore SRCDIR
# paths = NormIDstTargets paths [ : dir ] ;	Same as NormDstTargets but ignore DSTDIR
#
# More utility rules that have no side effects :
#
# FAppendSuffix f1 f2 ... : $(SUF) ;	return $(<) with suffixes if no current suffixes
# FStripCommon v1 : v2 ;				strip common initial parts of v1 v2
# FReverse a1 a2 ... ;					return ... a2 a1 
# FDelEmpty a1 a2 ... ;					return a1 a2 ... with any empty elements deleted
#
# Variables:
#
# Sub-Jamfile build variables, optionaly set in each Sub-Jamfile. They will
# be picked up by subsequent rules that set target relationships and
# creation rules. They are added to any Parent-Jamfile variables,
# and become the Parent-Jamfile variables of any SubIncludes.
# Relative file/path variables are anchored by the Jamfile location.
#
# ASFLAGS      - Flags for the assembler.
# CCFLAGS      - Flags for the C compiler.
# C++FLAGS     - Flags for the C++ compiler.
# LINKFLAGS    - Flags for the executable linker.
# SHLINKFLAGS  - Flags for the shared library linker.
# HDRS         - Complile header search directories
# DEFINES      - Compile defines
# LINKOBJS     - Link extra objects
# LINKLIBS     - Link extra libraries
# LINKSHLIBS   - Link extra shared libraries
# SHLINKOBJS     - ShLibrary Linker extra objects
# SHLINKLIBS     - ShLibrary Linker extra libraries
# SHLINKSHLIBS   - ShLibrary Linker extra shared libraries
#
# Sub-directory preferred build flags, e.g. optimizations etc.  These will only
# have effect if not set by a parent Jamfile (ie. involked from a leaf Jamfile).
#
# PREF_ASFLAGS
# PREF_CCFLAGS
# PREF_C++FLAGS
# PREF_LINKFLAGS
# PREF_SHLINKFLAGS
#
# Parent-Jamfile build variables. These are the accumulated
# values from any Parent Jamfiles, and will be added to any
# Sub-Jamfile variables when a rule picks them up. 
# File/path variables will have been normalized.
#
# P_ASFLAGS      - Flags for the assembler.
# P_CCFLAGS      - Flags for the C compiler.
# P_C++FLAGS     - Flags for the C++ compiler.
# P_LINKFLAGS    - Flags for the executable linker.
# P_SHLINKFLAGS  - Flags for the shared library linker.
# P_HDRS         - Complile header search directories
# P_DEFINES      - Compile defines
# P_LINKOBJS     - Link extra objects
# P_LINKLIBS     - Link extra libraries
# P_LINKSHLIBS   - Link extra shared libraries
# P_SHLINKOBJS     - ShLibrary Linker extra objects
# P_SHLINKLIBS     - ShLibrary Linker extra libraries
# P_SHLINKSHLIBS   - ShLibrary Linker extra shared libraries
#
# Pre-defined values
#
# Pre-packaged flags that conceal platform dependence,
# and are used to set CCFLAGS/C++FLAGS/LINKFLAGS/SHLINLFLAGS etc.
#
#	CCOPTFLAG       - CC/C++ flag for optimization
#	CCDEBUGFLAG     - CC/C++ flag for debug
#	CCPROFFLAG	    - CC/C++ flag for performance profiling
#	CCSHOBJFLAG     - CC/C++ flag for compiling for a shared library (UNIX)
#
#	LINKOPTFLAG		- LINK flag for optimization of the binary/shared library
#	LINKDEBUGFLAG	- LINK flag to support debugging
#	LINKPROFFLAG	- LINK flag to support performance profiling
#	LINKSTRIPFLAG	- LINK flag to strip binary of any symbols
#
# Location variables:
#
# DSTDIR	- puts all products in a subdirectory of their nominated location.
#             Useful for storing variants in their own areas.                 
#
# SRCDIR    - Looks for all sources and Jamfiles in an alternate top level source
#             location. Useful for accessing a read only source repository, or
#             building a variant without copying all the sources.
#             Note that at least the project Jamtop must be in the location
#             that is the target for the build, and will most likely be where
#             SRCDIR is set. SRCDIR is the location of the sources relative
#             to where it is declared.
#             (Not currently useful for a shadow build repository where the source
#              is spread between the SRCDIR and the build dir, because Jam 2.5 fails
#              to look at SEARCH if LOCATE is set).
#
# =========================================================================
# ArgyllCMS Normalize mods:
#
# The main change is to locate and identify targets using their nominated location in the
# filesystem. This eliminates the need to create Grist, or manipulate SEARCH, LOCATE etc.
# when setting up a herachy of Jamfiles. 
#
# Whenever a path is provided as an argument to one of the public rules, its path is assumed
# to be relative to the Jamfile that it is declared in. [ The NormPaths/NormTargets rules do this. ]
# Naturally absolute paths are not affected by this.
# During execution this means that all files are translated to paths that are
# in a normalized form, with either an absolute path or one that is relative to
# the directory that Jam was involked in. For simplicity it is assumed that
# the Jamfile contains UNIX style paths, and these are converted to the
# platform specific form on normalization.
#
# For a target, the normalized directory is then stripped from the name and
# set as the Grist (path elements separated by !), and also set in the NOMLOC,
# LOCATE and SEARCH variables "on" the target.  This gives a target a unique
# identity for the whole of the build, determined by its nominated file system location.
# The NOMLOC variable is a way of recovering it's location without having the reverse
# the Grist strings.  The actual location of the target can then be varied by
# augmenting it's LOCATE and/or SEARCH variables.
#
# Any include file discovered by header scanning is searched for using the 
# search path that is expected to be used during compilation, and
# its nominated location resolved this way. Any headers that are not
# located this way or who's location isn't declared by another rule (the
# latter being typical when headers are being generated) will be marked as
# being in an __unknown__ directory and will not be scaned. Normally any
# header files located in the STDHDRS directories will not be scanned either.
#
# [ Typically headers will be __unknown__ if the STDHDRS directories do
#   not reflect the default paths actually searched by the compiler, or if a
#   header is not actually going to be #included because it is protected
#   by an #ifdef. ]

# Argyll Jambase internal implementation rules:

# IDs = _TargetIDs targpaths ;				return target ID's (gristed) from normalized paths
# path = DeNormTargs target ;				return the original path 
# CopyTarget dest : source ; 				duplicate a targets on NOMLOC LOCATE SEARCH variables.
# NotTargets vars ;							ensure variables aren't treated as LOCATE etc targets

# d1 d2 ... file = _SepPath path ;			separate a path into its components
# path = _DirName d1 d2 ... ;				combine components into a path
# d1 d2 .. = _RatPath d1 d2 .. 				rationalize a path
# d1 d2 .. = _RootPath d1 d2 .. : p1 p2 ... re-root a path
# paths = RatPaths paths ;					rationalize a set of paths
# paths = RootPaths dir : paths ;			re-root a set of paths
# targs = CreateIDstTargets targs : dir ;	create dest targets by locating targets in dir
# paths1/paths = CatPaths path1 : paths ; 	concatenate paths separated by a / 
# found = FindToRoot starting_dir : file ;	Try and locate file from directory up to root.

# FindTop ;		# Look for a default project file 

# DoInit ;									Do subdir initialization (done by JAMBASE)

# public write/read Variables:
#
# TRACESTDHDRS				# Normally false, set to true to trace system path #include file dependenicies

# public read only Variables:
#
# SUBDIR d1/d2/d3			# Current path from PWD to Jamfile
# TOP d1/d2/d3				# Current path from PWD to the project Jamtop

# internal variables
#
# _SUBDIR d1 d2 d3 ...		# Current path from PWD to Jamfile
# _TOP d1 d2 d3				# Current path from PWD to the project Jamtop

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

# NOTE:	Cross compiling support :-
#	To fix this to support cross compilation, the setup needs to be
#	modularised into 3 parts, making them all rules that can be re-involked:
#	1) OS/Platform setup. System tools like copy, delete etc.
#	2) Compiler setup. Basic compiler syntax etc.
#	3) Target setup. Make this a rule, and allow switching
#	   target by involking the rule. This will be simpler to
#	   get working that per target 'on' variable (some
#	   things are currently broken for 'on' variables, such
#	   as library members, and it will be easier to do
#	   things such as switch compilers.

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


# Brief review of the jam language:
#
# Statements:
#		rule RULE - statements to process a rule
#		actions RULE - system commands to carry out target update
#
# Modifiers on actions:
#		together - multiple instances of same rule on target get executed
#				   once with their sources ($(>)) concatenated
#		updated - refers to updated sources ($(>)) only
#		ignore - ignore return status of command
#		quietly - don't trace its execution unless verbose
#		piecemeal - iterate command each time with a small subset of $(>)
#		existing - refers to currently existing sources ($(>)) only
#		bind vars - subject to binding before expanding in actions
#
# Special rules:
#		Always - always build a target
#		Depends - builds the dependency graph
#                 NOTE: can have only one $(<), or parallel builds stuff up!!
#                       Use FakeFile to work around the problem.
#		Echo - blurt out targets on stdout
#		Exit - blurt out targets and exit
#		Includes - marks sources as headers for target (a codependency)
#		NoCare - don't panic if the target can't be built
#		NoUpdate - create the target if needed but never update it 
#		NotFile - ignore the timestamp of the target (it's not a file)
#		Temporary - target need not be present if sources haven't changed
#
# Special variables set by jam:
#		$(<) - targets of a rule (to the left of the :)
#		$(>) - sources of a rule (to the right of the :)
#		$(xxx) - true on xxx (UNIX, VMS, NT, OS2, MAC)
#		$(OS) - name of OS - varies wildly
#		$(JAMVERSION) - version number (2.5)
#
# Special variables used by jam:
#		SEARCH - where to find something (used during binding and actions)
#		LOCATE - where to plop something not found with SEARCH
#		HDRRULE - rule to call to handle include files
#		HDRSCAN - egrep regex to extract include files
#
# Special targets:
#		all - default if none given on command line
#

# for perforce use -- jambase version

JAMBASEDATE = 2008.03.26 ;

# Initialize variables
#

# ===========================================================
#
# OS specific variable settings
#

if $(NT)
{
	MV				?= move /y ;
	CP				?= copy ;
	RM				?= del /f/q ;
	RMDIR			?= rmdir /s/q ;
	SLASH			?= \\ ;
	SUFLIB			?= .lib ;
	SUFSHLIB		?= .dll ;
	SUFIMPLIB		?= .lib ;
	SUFOBJ			?= .obj ;
	SUFEXE			?= .exe ;
	SUFSH			?= .bat ;
	CCSHOBJFLAG		?= ;

	if $(BCCROOT)
	{
		AR				?= tlib /C /P64 ;
		CC				?= bcc32 ;
		CCFLAGS			?= -v -w- -q -DWIN -tWR -tWM -tWC ;
		C++				?= $(CC) ;
		C++FLAGS		?= $(CCFLAGS) -P ;
		LINK			?= $(CC) ;
		LINKFLAGS		?= ;
		STDLIBPATH		?= $(BCCROOT)\\lib ;
		STDHDRS			?= $(BCCROOT)\\include ;
		NOARSCAN		?= true ;
	}
	else if $(MingW) || $(MINGW)
	{
		# We need to do something about adding -Wl,-subsystem,windows
		# if WinMain is being used ? (it defaults to console)

		MINGW           ?= $(MingW) ; 
		TPFX             = "" ;

		if [ GLOB $(MINGW)/bin : x86_64-w64-mingw32-gcc.exe ] {
			MINGW64 = $(MINGW) ;
        }
		
		# This doesn't work on a 32 bit system because we're cross
		# compiling and need to create build system exe's
		# (tiff/mkversion.exe, imdi/imdi_make.exe
		# Will using -m32 for local exe's fix this ?
		# What is multi-lib option ???
		if $(MINGW64) {
			ECHO "Compiler is MingW for 64 bit target" ;
			TARGET64     = true ;
			TPFX         = x86_64-w64-mingw32- ;
			MINGW64_LIB32 = $(MINGW)/mingw/lib32 ;
		} else {
			ECHO "Compiler is MingW for 32 bit target" ;
		}


		# Basic C/C++ tools
		AR				?= $(TPFX)ar rusc ;
		AS				?= $(TPFX)as ;
		CC				?= $(TPFX)gcc ;
		CCFLAGS			?= -DNT -mwin32 -pipe ;
		C++				?= $(CC) ;
		C++FLAGS		?= $(CCFLAGS) ;

		OLELIBS			?= -loleaut32 -luuid ;
		BASELIBS		?= -lstdc++ -lgcc -lodbc32 -lwsock32 ;
#		WINLIBS			?= -lwinspool -lwinmm -lshell32 -lcomctl32 -lctl3d32
#						   -lodbc32 -ladvapi32 -lodbc32 -lwsock32 -lopengl32
#		                   -lglu32 -lshlwapi -lsetupapi ;
		WINLIBS			?= -lshlwapi -lsetupapi -lole32 -lws2_32 -lpsapi -lversion ;
		GUILIBS			?= -lgdi32 -lmscms ;

		LINK			?= $(TPFX)g++ ;		# In case we link to C++ files
		LINKFLAGS		?= -static ;
		SHLINKFLAGS		?= ;
		STDLIBS			?= -lm $(OLELIBS) $(WINLIBS) $(GUILIBS) ;
		SHSTDLIBS		?= $(STDLIBS) ;

		STDHDRS			?= $(MINGW)\\include ;	

		# Not sure whether linker -mconsole or -mwindow are needed ??

		# Allow setting of flags, independent of compiler
		DEFFLAG			?= -D ;
		UNDEFFLAG		?= -U ;
		CCOPTFLAG		?= -O3 ;
		if $(PROCESSOR_LEVEL) = 15 
		{	# -mtune seems faster than -march !!!
#			CCOPTFLAG	+= -mtune=pentium4 ;
#			CCOPTFLAG	+= -mtune=prescott ;
			CCOPTFLAG	+= -mtune=nocona ;	# portable code for Pentium4 640
#			CCOPTFLAG	+= -march=nocona -mfpmath=sse -msse3 ; # non-portable

		}

		CCDEBUGFLAG		?= -g ;				# default (TABS? DWARF2 ?) format
		CCPROFFLAG		?= -pg ;
		LINKDEBUGFLAG	?= -g ;
		LINKPROFFLAG	?= -pg ; 
		LINKOPTFLAG		?= -s -O ;			# Affects creating .so's ??
		LINKSTRIPFLAG	?= -s ;	

		# Other tools
		AWK				?= awk ;
		SED				?= sed ;

#		YACC			?= yacc ;
#		YACCFLAGS		?= -d ;
#		YACCFILES		?= y.tab ;

		YACC			?= bison -y ;
		YACCGEN			?= .c ;
		YACCFILES		?= y.tab ;
		YACCFLAGS		?= -d ;
	}
	else if $(MSVC)		# 
	{
		ECHO "Compiler is VC++ 16 bit" ;
		AR				?= lib /nologo ;
		CC				?= cl /nologo ;
		CCFLAGS			?= /D \"WIN\" ;
		C++				?= $(CC) ;
		C++FLAGS		?= $(CCFLAGS) ;
		LINK			?= $(CC) ;
		LINKFLAGS		?= ;
		STDLIBS			?= 
							$(MSVC)\\lib\\mlibce.lib
							$(MSVC)\\lib\\oldnames.lib
							;
		NOARSCAN		?= true ;
		STDHDRS			?= $(MSVC)\\include ;
		DEFFLAG		 	?= /D ;						
		UNDEFFLAG		?= "/u _" ;
	}
	else if $(TARGET_ARCH)
	{
		# Intel C++ compiler (ICL) 

		# No IA64 dir
		local I ; I = "" ;

		AR				?= lib /NOLOGO ;
		AS				?= masm386 ;
		CC              ?= icl /nologo ; 
		CCFLAGS			?= /DNT /MD ;		# DLL compatible build by default

		C++				?= $(CC) ;
		C++FLAGS		?= $(CCFLAGS) /GX ;		# GX enables syncronous exception handling
		LINK			?= xilink /nologo ; 
		LINKOUTFLAG		?= /out: ;
		LINKFLAGS       ?= ; 		# iclvars.bat [arch] sets this up

		SHLINKFLAGS		?= ;

		STDLIBS			?= 
						oldnames.lib
						kernel32.lib 
						advapi32.lib		
						user32.lib		
						mscms.lib		
						gdi32.lib		 
						shlwapi.lib		 
						shell32.lib		 
						setupapi.lib
						ole32.lib
						oleaut32.lib
						ws2_32.lib
						Wbemuuid.lib
						;
		SHSTDLIBS		?= $(STDLIBS) ;
		LINKFLAG		?= ;						
		STDHDRS			?= $(ICPP_COMPILER14)\\Include ;
		DEFFLAG		 	?= /D ;				
		UNDEFFLAG		?= /U ;
		CCOPTFLAG		?= /O3 ; 

		if $(MSVCVER) = 6 {
			CCDEBUGFLAG		?= /Od /Z7 ;		# Include debugging into in each object		
			CCPROFFLAG		?= /Od /Z7 ;
			LINKDEBUGFLAG	?= /DEBUGTYPE:BOTH /DEBUG /PDB:NONE ;		
		} else {
			CCDEBUGFLAG		?= /Od /Zi ;		# /Zi creates debugging database
			CCPROFFLAG		?= /Od /Zi ;
			LINKDEBUGFLAG	?= /DEBUG ;
		}
		LINKPROFFLAG	?= /PROFILE $(LINKDEBUGFLAG) ;		
		LINKOPTFLAG		?= /OPT:REF ;	
		LINKSTRIPFLAG	?= ;
		YACC			?= bison -y ;
		YACCGEN			?= .c ;
		YACCFILES		?= y.tab ;
		YACCFLAGS		?= -d ;
	}
	else if $(MSVCNT) || $(MSVCDIR) || $(MSVCDir) || $(VCINSTALLDIR)
	{
		# Visual C++ 8.0/9.0/10.0/11.0/12.0 uses VCINSTALLDIR
		# We assume VC++ Express + XP32 SDK has been setup

		if $(VCINSTALLDIR) {
			MSVCNT		?= $(VCINSTALLDIR) ;		
		} else if $(MSVCDir) {
			MSVCNT		?= $(MSVCDir) ;		
		} else {			# Visual C++ 6.0 uses MSVCDIR
			MSVCNT		?= $(MSVCDIR) ;		
		}

		if [ MATCH 12\\.(.*) : $(VisualStudioVersion) ] {
			ECHO "Compiler is VC++12 32 bit" ;
			MSVCVER     = 12 ;
		} else if [ MATCH 11\\.(.*) : $(VisualStudioVersion) ] {
			ECHO "Compiler is VC++11 32 bit" ;
			MSVCVER     = 11 ;
		} else if [ MATCH (.*)VC\\+\\+10(.*) : $(MSVCNT) ] {
			ECHO "Compiler is VC++10 32 bit" ;
			MSVCVER     = 10 ;
		} else if [ MATCH (.*)VC\\+\\+9(.*) : $(MSVCNT) ] {
			ECHO "Compiler is VC++9 32 bit" ;
			MSVCVER     = 9 ;
		} else if [ MATCH (.*)VC\\+\\+8(.*) : $(MSVCNT) ] {
			ECHO "Compiler is VC++8 32 bit" ;
			MSVCVER     = 8 ;
		} else {
			ECHO "Compiler is VC++6 32 bit" ;
			MSVCVER     = 6 ;
		}

		# Add the SDK include and lib if it is present
		if $(MSSdk) {
			MSNTSDK ?= $(MSSdk) ;
		} else if $(MSSDK) {
			MSNTSDK ?= $(MSSDK) ;
		} else if $(MSVCNT) {
			MSNTSDK ?= $(MSVCNT) ;
		}

		# bury IA64 in the path for the SDK ???
		# (but MSSDK already has this ?
#		local I ; if $(CPU) = "IA64" { I = ia64\\ ; } else { I = "" ; }
		local I ; I = "" ;

		AR				?= lib /NOLOGO ;
		AS				?= masm386 ;
		CC				?= cl /nologo ;
		CCFLAGS			?= /DNT /MD ;		# DLL compatible build by default
		if $(MSVCVER) >= 8 {
			CCFLAGS		+= /D_CRT_SECURE_NO_DEPRECATE=1
                           /D_CRT_NONSTDC_NO_DEPRECATE=1 ;
		}
		C++				?= $(CC) ;
		C++FLAGS		?= $(CCFLAGS) /GX ;		# GX enables syncronous exception handling
		LINK			?= link /nologo ;
		LINKOUTFLAG		?= /out: ;
		LINKFLAGS		?= /INCREMENTAL:NO /LIBPATH:$(MSNTSDK)\\lib\\$(I) ;
		SHLINKFLAGS		?= ;

		STDLIBS			?= 
						oldnames.lib
						kernel32.lib 
						advapi32.lib		
						user32.lib		
						mscms.lib		
						gdi32.lib		 
						shlwapi.lib		 
						shell32.lib		 
						setupapi.lib
						ole32.lib
						oleaut32.lib
						ws2_32.lib
						Wbemuuid.lib
						Version.lib
						;
		SHSTDLIBS		?= $(STDLIBS) ;
		LINKFLAG		?= ;						
		STDHDRS			?= $(MSNTSDK)\\Include ;
		DEFFLAG		 	?= /D ;				
		UNDEFFLAG		?= /U ;
		CCOPTFLAG		?= /Ox ;		# MSVC9 doesn't understamd GB, G6 ?
		if $(MSVCVER) = 6 {
			CCDEBUGFLAG		?= /Od /Z7 ;		# Include debugging into in each object		
			CCPROFFLAG		?= /Od /Z7 ;
			LINKDEBUGFLAG	?= /DEBUGTYPE:BOTH /DEBUG /PDB:NONE ;		
		} else {
			CCDEBUGFLAG		?= /Od /Zi ;		# /Zi creates debugging database
			CCPROFFLAG		?= /Od /Zi ;
			LINKDEBUGFLAG	?= /DEBUG ;
		}
		LINKPROFFLAG	?= /PROFILE $(LINKDEBUGFLAG) ;		
		LINKOPTFLAG		?= /OPT:REF ;	
		LINKSTRIPFLAG	?= ;
		YACC			?= bison -y ;
		YACCGEN			?= .c ;
		YACCFILES		?= y.tab ;
		YACCFLAGS		?= -d ;
	}
	else
	{
		EXIT On NT, set BCCROOT, MINGW, MSVCDIR, MSVCNT, MSVC or VCINSTALLDIR to the root
				of the Borland, GCC or Microsoft directories. ;
	}
}
else if $(OS2)
{
	WATCOM			?= $(watcom) ;
	 
	if ! $(WATCOM)
	{
		Exit On OS2, set WATCOM to the root of the Watcom directory. ;
	}

	AR				?= wlib ;
	BINDIR			?= \\os2\\apps ;
	CC				?= wcc386 ;
	CCFLAGS			?= /zq /DOS2 /I$(WATCOM)\\h ; # zq=quiet
	C++				?= wpp386 ;
	C++FLAGS		?= $(CCFLAGS) ;
	CP				?= copy ;
	DOT				?= . ;
	DOTDOT			?= .. ;
	LINK			?= wcl386 ;
	LINKFLAGS		?= /zq ; # zq=quiet
	STDLIBS			?= ;
	MV				?= move ;
	NOARSCAN		?= true ;
	RM				?= del /f ;
	SLASH			?= \\ ;
	STDHDRS			?= $(WATCOM)\\h ;
	SUFEXE			?= .exe ;
	SUFSH			?= .bat ;
	SUFLIB			?= .lib ;
	SUFOBJ			?= .obj ;
	DEFFLAG		 	?= /D ;				
	UNDEFFLAG		?= "/u _" ;

}
else if $(VMS)
{
	C++				?= cxx ;
	C++FLAGS		?= ;
	CC				?= cc ;
	CCFLAGS			?= ;
	CHMOD			?= set file/prot= ;
	CP				?= copy/replace ;
	CRELIB			?= true ;
	DOT				?= [] ;
	DOTDOT			?= [-] ;
	EXEMODE			?= (w:e) ;
	FILEMODE		?= (w:r) ;
	HDRS			?= ;
	LINK			?= link ;
	LINKFLAGS		?= "" ;
	STDLIBS			?= ;
	MKDIR			?= create/dir ;
	MV				?= rename ;
	RM				?= delete ;
	RUNVMS			?= mcr ;
	SHELLMODE		?= (w:er) ;
	SLASH			?= . ;
	STDHDRS			?= decc$library_include ;
	SUFEXE			?= .exe ;
	SUFSH			?= .bat ;
	SUFLIB			?= .olb ;
	SUFOBJ			?= .obj ;

	switch $(OS) 
	{
		case OPENVMS : CCFLAGS ?= /stand=vaxc ;
		case VMS	 : STDLIBS ?= sys$library:vaxcrtl.olb/lib ;
	}
}
else if $(MAC)
{
	local OPT ;
	
	CW		?= "{CW}" ;

	MACHDRS ?=
			"$(UMACHDRS):Universal:Interfaces:CIncludes"
			"$(CW):MSL:MSL_C:MSL_Common:Include"
			"$(CW):MSL:MSL_C:MSL_MacOS:Include" ;

	MACLIBS ?=
			"$(CW):MacOS Support:Universal:Libraries:StubLibraries:Interfacelib"
			"$(CW):MacOS Support:Universal:Libraries:StubLibraries:Mathlib" ;

	MPWLIBS ?= 
			"$(CW):MacOS Support:Libraries:Runtime:Libs:MSL_MPWCRuntime_PPC.lib"
			"$(CW):MSL:MSL_C:MSL_MacOS:Lib:PPC:MSL_C_PPC_MPW.Lib" ;

	MPWNLLIBS ?= 
			"$(CW):MacOS Support:Libraries:Runtime:Libs:MSL_MPWCRuntime_PPC.lib"
			"$(CW):MSL:MSL_C:MSL_MacOS:Lib:PPC:MSL_C_PPC_MPW(NL).Lib" ;
			
	SIOUXHDRS ?= ;
	
	SIOUXLIBS ?= 
			"$(CW):MacOS Support:Libraries:Runtime:Libs:MSL_Runtime_PPC.lib"
			"$(CW):MSL:MSL_C:MSL_MacOS:Lib:PPC:MSL_SIOUX_PPC.Lib" 
			"$(CW):MSL:MSL_C:MSL_MacOS:Lib:PPC:MSL_C_PPC.Lib" ;

	C++				?= mwcppc ;
	C++FLAGS		?= -w off ;
	CC				?= mwcppc ;
	CCFLAGS			?= -w off ;
	CP				?= duplicate -y ;
	DOT				?= ":" ;
	DOTDOT			?= "::" ;
	HDRS			?= $(MACHDRS) $(MPWHDRS) ;
	LINK			?= mwlinkppc ;
	LINKFLAGS		?= -mpwtool -warn ;								
	STDLIBS			?= $(MACLIBS) $(MPWLIBS) ;								
	SHSTDLIBS		?= $(STDLIBS) ;
	MKDIR			?= newfolder ;
	MV				?= rename -y ;
	NOARSCAN		?= true ;
	RM				?= delete -y ;
	SLASH			?= ":" ;
	STDHDRS			?= ; 
	SUFLIB			?= .lib ;
	SUFOBJ			?= .o ;
}
else if $(OS) = BEOS && $(OSPLAT) = PPC
{
	AR				?= mwld -xml -o ;
	BINDIR			?= /boot/home/config/bin ;
	CC				?= mwcc ;
	CCFLAGS			?= -nosyspath ;
	C++				?= $(CC) ;
	C++FLAGS		?= -nosyspath ;
	CHMOD			?= chmod ;
	CHGRP			?= chgrp ;
	CHOWN			?= chown ;
	FORTRAN			?= "" ;
	LEX				?= flex ;
	LIBDIR			?= /boot/home/config/lib ;
	LINK			?= mwld ;
	LINKFLAGS		?= "" ;
	MANDIR			?= /boot/home/config/man ;
	NOARSCAN		?= true ;
	RANLIB			?= ranlib ;
	STDHDRS			?= /boot/develop/headers/posix ;
	YACC			?= bison -y ;
	YACCGEN			?= .c ;
	YACCFILES		?= y.tab ;
	YACCFLAGS		?= -d ;
}
else if $(OS) = BEOS 
{
	BINDIR			?= /boot/home/config/bin ;
	CC				?= gcc ;
	C++				?= $(CC) ;
	CHMOD			?= chmod ;
	CHGRP			?= chgrp ;
	CHOWN			?= chown ;
	FORTRAN			?= "" ;
	LEX				?= flex ;
	LIBDIR			?= /boot/home/config/lib ;
	LINK			?= gcc ;
	MANDIR			?= /boot/home/config/man ;
	NOARSCAN		?= true ;
	RANLIB			?= ranlib ;
	STDHDRS			?= /boot/develop/headers/posix ;
	YACC			?= bison -y ;
	YACCGEN			?= .c ;
	YACCFILES		?= y.tab ;
	YACCFLAGS		?= -d ;
}
else if $(UNIX)
{
	switch $(OS)
	{
	case AIX :
		STDLIBS			?= -lbsd ;

	case AMIGA :
		CC				?= gcc ;
		YACC			?= bison -y ;

	case CYGWIN :		
		CC				?= gcc ;
		CCFLAGS			+= -D__cygwin__ ;
		LEX				?= flex ;
		JAMSHELL		?= sh -c ;
		RANLIB			?= "" ;
		SUFEXE			?= .exe ;
		YACC			?= bison -y ;

	case DGUX :
		RANLIB			?= "" ;
		RELOCATE		?= true ;

	case HPUX :
		RANLIB			?= "" ;

	case INTERIX :
		CC				?= gcc ;
		JAMSHELL		?= sh -c ;
		RANLIB			?= "" ;

	case IRIX :
		RANLIB			?= "" ;

	case MPEIX :
		CC				?= gcc ;
		C++				?= gcc ;
		CCFLAGS			+= -D_POSIX_SOURCE ;
		HDRS			+= /usr/include ;
		RANLIB			?= "" ; 
		NOARSCAN		?= true ;
		NOARUPDATE		?= true ;

	case MVS :
		RANLIB			?= "" ; 

	case NEXT :
		AR				?= libtool -o ;
		RANLIB			?= "" ;

	case MACOSX :
#		AR			  	?= libtool -o ;
		AR			  	?= ar rusc ;
		C++				?= c++ ;
		MANDIR			?= /usr/local/share/man ;
		RANLIB		  	?= "" ;
		SUFSHLIB		?= .dylib ;
		SUFIMPLIB		?= .dylib ;

	case NCR :
		RANLIB			?= "" ;

	case PTX :
		RANLIB			?= "" ;

	case QNX :
		AR				?= wlib ;
		CC				?= cc ;
		CCFLAGS			?= -Q ;		# quiet
		C++				?= $(CC) ;
		C++FLAGS		?= -Q ;		# quiet
		LINK			?= $(CC) ;
		LINKFLAGS		?= -Q ;		# quiet
		NOARSCAN		?= true ;
		RANLIB			?= "" ;

	case SCO :
		RANLIB			?= "" ;
		RELOCATE		?= true ;

	case SINIX :
		RANLIB			?= "" ;

	case SOLARIS :
		RANLIB			?= "" ;
		AR				?= "/usr/ccs/bin/ar ru" ;

	case UNICOS :
		NOARSCAN		?= true ;
		CCOPTFLAG		?= -O0 ;

	case UNIXWARE :
		RANLIB			?= "" ;
		RELOCATE		?= true ;
	}

	# UNIX defaults

	CCFLAGS			?= -DUNIX -D_THREAD_SAFE -pipe ;
	CCOPTFLAG		?= -O2 ;		
	CCDEBUGFLAG		?= -g ;		
	CCPROFFLAG		?= ;		
	CCSHOBJFLAG		?= -fPIC ;			# Position independent is better for ShLibrary
	C++FLAGS		?= $(CCFLAGS) ;
	CHMOD			?= chmod ;
	CHGRP			?= chgrp ;
	CHOWN			?= chown ;
	LEX				?= lex ;
	LINKFLAGS		?= ;
	LINKOPTFLAG		?= -O ;				# Affects creating .so's
	LINKSTRIPFLAG	?= -s ;
	LINKDEBUGFLAG	?= ;
	LINKPROFFLAG	?= ;
	SHLINKFLAGS		?= ;					# Flags for creation of shared library
	STDLIBS			?= -lm -lpthread ;
	SHSTDLIBS		?= $(STDLIBS) ;
	LINKFLAG		?= -l ;
	RANLIB			?= "" ;
	YACC			?= yacc ;
	YACCGEN			?= .c ;
	YACCFILES		?= y.tab ;
	YACCFLAGS		?= -d ;

	HDRS			?= /usr/local/include ;

	# Add some good defaults for OS X
	if $(OS) = MACOSX {
		CCFLAGS   		+= -Wno-sign-compare ;		# supress new gcc4 warnings ?
		CCFLAGS   		+= -fpascal-strings ;		# for compatibility with the OSX API
		LINKFLAGS 		+= -framework Carbon ;		# default for .c
		LINKFLAGS       += -framework Cocoa ;		# default for .m
	}

	# Make things work on 64 bit Linux
	# Because HOSTTYPE is not normally exported, check the uname() result
	if ! $(HOSTTYPE) {
		HOSTTYPE = $(JAMUNAME[1]) ;
	}

	if $(HOSTTYPE) = x86_64 
	 || $(HOSTTYPE) = x86_64-linux
	 || $(HOSTTYPE) = amd64 {
		ECHO "We're on a 64 bit host" ;
		HOST64     = true ;
		CCFLAGS	   += -m64 ;
		C++FLAGS   += -m64 ;
	}

	# Adding --hash-style=sysv to the compiler options
	# might improve Linux compatibility with FC5 ?
}

#
# General defaults; a lot like UNIX
#

	AR				?= ar rusc ;
	AS				?= as ;
	ASFLAGS			?= ;
	AWK				?= awk ;
	BINDIR			?= /usr/local/bin ;
	C++				?= cc ;
	C++FLAGS		?= ;
	CC				?= cc ;
	CCFLAGS			?= ;
	CP				?= cp -f ;
	CRELIB			?= ;
	DOT				?= . ;
	DOTDOT			?= .. ;
	EXEMODE			?= 755 ;
	FILEMODE		?= 644 ;
	FORTRAN			?= f77 ;
	FORTRANFLAGS	?= ;
	HDRS			?= ;
	INSTALLGRIST	?= installed ;
	JAMFILE			?= Jamfile ;
	JAMTOP			?= Jamtop ;
	LEX				?= ;
	LIBDIR			?= /usr/local/lib ;
	LINK			?= $(CC) ;
	LINKFLAGS		?= ;
	SHLINKFLAGS		?= ;
	STDLIBS			?= ;
	SHSTDLIBS		?= $(STDLIBS) ;
	LINKOUTFLAG	 	?= "-o " ;		
	LN				?= ln ;
	MANDIR			?= /usr/local/man ;
	MKDIR			?= mkdir ;
	MV				?= mv -f ;
	RCP				?= rcp ;
	RM				?= rm -f ;
	RMDIR			?= $(RM) ;
	RSH				?= rsh ;
	SED				?= sed ;
	SHELLHEADER		?= "#!/bin/sh" ;
	SHELLMODE		?= 755 ;
	SLASH			?= / ;
	STDHDRS			?= /usr/include ;
	SUFEXE			?= "" ;
	SUFSH			?= .sh ;
	SUFLIB			?= .a ;
	SUFSHLIB		?= .so ;
	SUFIMPLIB		?= .so ;
	SUFOBJ			?= .o ;

	DEFFLAG		 	?= -D ;				
	UNDEFFLAG		?= -U ;
	YACC			?= ;
	YACCGEN			?= ;
	YACCFILES		?= ;
	YACCFLAGS		?= ;

	HDRPATTERN = 
				"^[		 ]*#[		 ]*include[		 ]*[<\"]([^\">]*)[\">].*$" ;

	OSFULL = $(OS)$(OSVER)$(OSPLAT) $(OS)$(OSPLAT) $(OS)$(OSVER) $(OS) ;


# ===========================================================

#
# Base dependencies - first for "bootstrap" kinds of rules
#

Depends all : shell files lib exe obj ;
Depends all shell files lib exe obj install : first ;
NotFile all first shell files lib exe obj dirs clean install uninstall ;
Always clean uninstall ;

# ===========================================================
# ArgyllCMS Jambase building blocks:

# Allow returning of a targets "on" variable 
# Only the first variable in the list "on" variable is retrieved
# ret = geton target : variable ;
rule noop { return $(<) ; }
rule geton {
	local _rv ;
	_rv = [ on $(<[1]) noop $($(>)) ] ;
	return $(_rv) ;
}

# Separate a single path into it's components, irrespective of
# whether a MSWindows or UNIX path separator is used.
# d1 d2 ... file = _SepPath path ; 
rule _SepPath
{
#Echo "_SepPath called with = '" $(<[1]) "'" ;

	local _in = /$(<[1]) ;		# leading / is to detect absolute path
	local split  = true ;
	local _out = ;

	if ! $(<) {
#Echo "_SepPath returning '" "" "'" ;
		return $(<) ;
	}

	split = [ MATCH (.*)[/\\](.*) : $(_in) ] ;
	while $(split) {
#Echo "Split = '" $(split[1]) "' and '" $(split[2]) "'" ;
		_out = $(split[2]) $(_out) ;
		_in = $(split[1]) ;
		split = [ MATCH (.*)[/\\](.*) : $(_in) ] ;
	}
#Echo "After slplitting got '" $(_in) "' out '" $(_out) "'" ;

	if $(_in) != ""  {		# No leading /
#Echo "Setting _out to '" $(_in) "' plus '" $(_out) "'" ;
		_out = $(_in) $(_out) ;
	}

#Echo "_SepPath initial sep =" $(_out) ;

	# Deal with DOS drive letters
	if $(NT) {
		switch $(_out[1]) {
			case *:* : {
				split = [ MATCH (.*)[:](.*) : $(_out[1]) ] ;
				if $(split[2]) != "" {
					_out = $(split[1]): $(split[2]) $(_out[2-]) ;
				} else {
					_out = $(split[1]): $(SLASH) $(_out[2-]) ;
				}
			}
		}
#Echo "_SepPath after DOS letters _out =" $(_out) ;
	}

	# Make sure leading / is in the correct form 
	if $(_out[1]) = "/" || $(_out[1]) = "\\" {
		_out = $(SLASH) $(_out[2-]) ;
	} 

#Echo "_SepPath returning _out =" $(_out) ;

	return $(_out) ;
}

# Turn a sequence of directories into a directory path.
# Opposite of _SepPath
# path = _DirName d1 d2 ... ;
rule _DirName
{
	local _in = $(<) ;
	local _out = "" ;

#Echo "_DirName got '" $(_in) "'" ;

	# Deal with DOS drive letters
	if $(NT) {
		switch $(_in[1]) {
			case *:* : {
#Echo "_DirName match x:" ;
				_out = $(_in[1]) ;
				_in = $(_in[2-]) ;
			}
		}
#Echo "_DirName _in = '" $(_in) "' out = '" $(_out) "'" ;
	}

	# Deal with absolute path
	if $(_in[1]) = "/" || $(_in[1]) = "\\" {
		_out = $(_out)$(SLASH) ;
		_in = $(_in[2-]) ;
#Echo "_DirName abs in = '" $(_in) "' out = '" $(_out) "'" ;
	}

	while $(_in) {
		_out = $(_out)$(_in[1]) ;
		_in = $(_in[2-]) ;
#Echo "_DirName in = '" $(_in) "' out = '" $(_out) "'" ;
		if $(_in) {
			_out = $(_out)$(SLASH) ;
		}
#Echo "_DirName sep in = '" $(_in) "' out = '" $(_out) "'" ;
	}

#Echo "_DirName returning '" $(_out) "'" ;
	return $(_out) ;
}

# Rationalize a path (ie. cancell dirs & .. )
# Currently paths that cancel out return " ".
# d1 d2 .. file = _RatPath d1 d2 .. file ; 
rule _RatPath
{
	local _in = $(<) ;
	local _rio = ;		# reversed intermediate output
	local _out = ;
	local _gotdot = ;	# There was a dot in the input path
	local _first = ;	# Fixed first elements 

#Echo "_RatPath called with '" $(_in) "'" ;
	
	# Deal with DOS drive letters
	if $(NT) {
		switch $(_in[1]) {
			case *:* : {
				_first = $(_first) $(_in[1]) ;
				_in = $(_in[2-]) ;
			}
		}
#Echo "_RatPath got first '" $(_first) "' in = '" $(_in) "'" ;
	}

	# Deal with absolute path or single dot
	if $(_in[1]) = / || $(_in[1]) = \\ {
		_first = $(_first) $(SLASH) ;
		_in = $(_in[2-]) ;
#Echo "_RatPath got first '" $(_first) "' in = '" $(_in) "'" ;
	} else {
		if $(_in[1]) = $(DOT) && ! $(_in[2-]) {
			_first = $(_first) $(DOT) ;
			_in = $(_in[2-]) ;
#Echo "_RatPath got first '" $(_first) "' in = '" $(_in) "'" ;
		}
	}
	while $(_in) {
#Echo "Next = " $(_in[1]) " and last = " $(_rio[1]) ;
		if $(_in[1]) = $(DOT) {
			_gotdot = true ;
		}
		# if the .. will cancel out the previous directory
		if $(_in[1]) = $(DOTDOT) && $(_rio[1]) && $(_rio[1] != $(DOTDOT)  {
			_rio = $(_rio[2-]) ;		# Remove previous
#Echo "Found .. so removed previous and got _rio = " $(_rio) ;
		} else {						# Add next
			# If we're decending with a directory
			if $(_in[1]) != $(DOT) {		
				_rio = $(_in[1]) $(_rio) ;
#Echo "Adding so _rio = " $(_rio) ;
			} else {
#Echo "Found . so ignoring got _rio = " $(_rio) ;
			}
		}
		_in = $(_in[2-]) ;
	}
	# Make sure that a single dot is preserved
	if $(_gotdot) && ! $(_rio) {
		_rio = $(DOT) ;
	}
#Echo "Final _rio = " $(_rio) ;
	# Reverse it 
	for _i in $(_rio) {
		_out = $(_i) $(_out) ;
	}

	# Preprent with first */
	_out = $(_first) $(_out) ;

#Echo "_RatPath rationalized to '" $(_out) "'" ;
#Echo ;

	return $(_out) ;
}

# Re-root a directory path by pre-pending the given path.
# Don't do this if the path is absolute
# Don't return anything if the path is empty.
# p1 p2 .. file = _RootPath d1 d2 .. : p1 p2 ... file ; 
rule _RootPath
{
	local _i _out = ;

#Echo "_RootPath called with '" $(<) "' and '" $(>) "'" ;

	if ! $(>[1]) {
#Echo "_RootPath no RHS returning '" $(<) "'" ;
		return $(<) ;
	}

	if $(>[1]) = "/" || $(>[1]) = "\\" {
#Echo "_RootPath RHS = / returning '" $(<) "'" ;
		return $(>) ;
	}
	if $(NT) {
		switch $(>[1]) {
			case *:* : {
#Echo "_RootPath RHS = drive: returning '" $(<) "'" ;
				return $(>) ;
			}
		}
	}

#Echo "_RootPath returning '" $(<) $(>) "'" ;
	return $(<) $(>) ;

}

# Re-root a set of directory paths by pre-pending the given path.
# Don't do this if the path is absolute
# Don't return anything if the path is empty.
# paths = RootPaths dir : paths ; 
rule RootPaths
{
	local _d = [ _SepPath $(<[1]) ] ;
	local _i _t ;
	local _out = ;

#Echo "RootPaths got dir '" $(<[1]) "' and paths '" $(>) "'" ;
	for _i in $(>)
	{
		_t =    [ _SepPath $(_i) ] ;
		_t =    [ _RootPath $(_d) : $(_t) ] ;
		_t =    [ _RatPath $(_t) ] ;
		_out += [ _DirName $(_t) ] ;
	}

#Echo "RootPaths returns to '" $(_out) "'" ;

	return $(_out) ;
}

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

# Rationalize a set of paths (ie. cancell dirs & .. )
# paths = RatPaths paths ;
rule RatPaths
{
	local _i _t ;
	local _out = ;

#Echo "RatPaths got '" $(<) "'" ;
	for _i in $(<)
	{
		_t =    [ _SepPath $(_i) ] ;
		_t =    [ _RatPath $(_t) ] ;
		_out += [ _DirName $(_t) ] ;
	}

#Echo "RatPaths returns to '" $(_out) "'" ;

	return $(_out) ;
}

# Normalize a set of paths. This resolves the
# paths location with respect to SUBDIR, and so
# accounting for the location of the Jamfile
# the path is declared, and rationalizes the result.
# If the optional dir is present, use it to
# locate their targets rather than SUBDIR.
# If paths is empty, nothing is returned.
# SRCDIR and DSTDIR are ignored.
# paths = NormPaths paths : [ dir ] ;
rule NormPaths
{
	return [ _NormPaths $(<) : $(>) : "none" ] ;
}

# Normalize a set of Source paths. This resolves the
# paths location with respect to SUBDIR, and so
# accounting for the location of the Jamfile
# the path is declared, and rationalizes the result.
# If the optional dir is present, use it to
# locate thie targets rather than SUBDIR.
# If paths is empty, nothing is returned.
# paths = NormPaths paths : [ dir ] ;
rule NormSrcPaths
{
	return [ _NormPaths $(<) : $(>) : "src" ] ;
}

# Normalize a set of destination paths. This resolves the
# paths location with respect to SUBDIR, and so
# accounting for the location of the Jamfile
# the path is declared, and rationalizes the result.
# If the optional dir is present, use it to
# locate thie targets rather than SUBDIR.
# If paths is empty, nothing is returned.
# paths = NormPaths paths : [ dir ] ;
rule NormDstPaths
{
	return [ _NormPaths $(<) : $(>) : "dst" ] ;
}

# Normalize a set of paths. This resolves the
# paths location with respect to SUBDIR, and so
# accounting for the location of the Jamfile
# the path is declared, and rationalizes the result.
# If the optional dir is present, use it to
# locate thie targets rather than SUBDIR.
# If paths is empty, nothing is returned.
# paths = NormPaths paths : dir : type ;
# (This and the other rules it calls, is probably a good candidate for speed optimization!)
#
#  ~~~~~ This isn't working correctly -
#  i.e. given "." where . = ccast and "../ccast",
#  it still returns "../ccast".
rule _NormPaths
{
	local _p _i _t ;
	local _out = ;
	local _src _dst ;

	if $(>) {
		_p = [ _SepPath $(>[1]) ] ;
		_p = [ _RatPath $(_p) ] ;
	} else {
		_p = $(_SUBDIR) ;
	}

	_src = [ _SepPath $(SRCDIR) ] ;
	_dst = [ _SepPath $(DSTDIR) ] ;

#Echo "_NormPaths got '" $(<) "' dir '" $(_p) "' type '" $(3) "'srcdir "' $(_src) "' dstdir '" $(_dst) "'" ;
	for _i in $(<)
	{
#Echo "_i = '" $(_i) "'" ; 
		_t =    [ _SepPath $(_i) ] ;
#Echo "_SepPath _i = '" $(_t) "'" ; 
		_t =    [ _RootPath $(_p) : $(_t) ] ;
#Echo "_RootPath _t = '" $(_t) "'" ; 

		if $(_src) && $(3) = "src" {
			_t = [ _RootPath $(_src) : $(_t) ] ;
#Echo "_src += _t = '" $(_i) "'" ; 

		} else if $(_dst) && $(3) = "dst" {
			local _f ;
			_t = [ _DirName $(_t) ] ;
			_f = [ _SepPath $(_t:BS) ] ;
			_t = $(_t:D) ;
			if ! $(_t) {
				_t = $(DOT) ;
			}
			_t = [ _RootPath [ _SepPath $(_t) ] : $(_dst) ] $(_f) ;
#Echo " _t += _dst = '" $(_t) "'" ; 
		}
		_t = [ _RatPath $(_t) ] ;
#Echo "_RatPath _t = '" $(_t) "'" ; 
		# Special case of complete cancelation that can occure for a pure
		# directory path (?)
		if $(_t) = "" {
			_t = "." ;
		}
		_t = [ _DirName $(_t) ] ;
		_out += $(_t) ;
#Echo "_out += '" $(_t) "'" ; 
	}

#Echo "_NormPaths returns '" $(_out) "'" ;
	return $(_out) ;
}

# Normalize a set of targets. 
# This is the same as NormPaths except it
# then strips the path out and uses it to set the
# Grist, NOMLOC, LOCATE and SEARCH on the target.
# If the optional dir is present, use it to
# locate the targets rather than SUBDIR.
# Ignore SRCDIR if present.
# paths = NormTargets paths [ : dir ] ;
rule NormISrcTargets
{
	return [ _NormTargets $(<) : $(>) : "isrc" ] ;
}

# Normalize a set of targets. 
# This is the same as NormPaths except it
# then strips the path out and uses it to set the
# Grist, NOMLOC, LOCATE and SEARCH on the target.
# If the optional dir is present, use it to
# locate the targets rather than SUBDIR.
# se DSTDIR if present.
# paths = NormTargets paths [ : dir ] ;
rule NormIDstTargets
{
	return [ _NormTargets $(<) : $(>) : "idst" ] ;
}

# Normalize a set of targets. 
# This is the same as NormPaths except it
# then strips the path out and uses it to set the
# Grist, NOMLOC, LOCATE and SEARCH on the target.
# If the optional dir is present, use it to
# locate the targets rather than SUBDIR.
# Use SRCDIR if present.
# paths = NormTargets paths [ : dir ] ;
rule NormSrcTargets
{
	return [ _NormTargets $(<) : $(>) : "src" ] ;
}

# Normalize a set of targets. 
# This is the same as NormPaths except it
# then strips the path out and uses it to set the
# Grist, NOMLOC, LOCATE and SEARCH on the target.
# If the optional dir is present, use it to
# locate the targets rather than SUBDIR.
# Use DSTDIR if present.
# paths = NormTargets paths [ : dir ] ;
rule NormDstTargets
{
	return [ _NormTargets $(<) : $(>) : "dst" ] ;
}

# Normalize a set of targets. 
# This is the same as NormPaths except it
# then strips the path out and uses it to set the
# Grist, NOMLOC, LOCATE and SEARCH on the target.
# If the optional dir is present, use it to
# locate the targets rather than SUBDIR.
# paths = NormTargets paths : dir : type ;
rule _NormTargets
{
	local _p _i _t _d _ds ;
	local _out = ;
	local _src _dst ;

	if $(>) {
		_p = [ _SepPath $(>[1]) ] ;
	} else {
		_p = $(_SUBDIR) ;
	}

	if $(3) = "src" || $(3) = "dst" {
		_src = [ _SepPath $(SRCDIR) ] ;
		_dst = [ _SepPath $(DSTDIR) ] ;
	}

#Echo ;
#Echo "_NormTargets got '" $(<) "' base = '" $(_p) "' type '" $(3) "' srcdir = '" $(_src) "' dstdirr = '" $(_dst) "'" ;
	for _i in $(<)
	{
		_t = [ _SepPath $(_i) ] ;
#Echo " _t = '" $(_t) "'" ;
		_t = [ _RootPath $(_p) : $(_t) ] ;
#Echo " _t = '" $(_t) "'" ;
		_t = [ _RatPath $(_t) ] ;
#Echo " _t = '" $(_t) "'" ;
		_t = [ _DirName $(_t) ] ;
#Echo " _t = '" $(_t) "'" ;
		_d = $(_t:D) ;
#Echo " _d = '" $(_d) "'" ;
		_ds = [ _SepPath $(_d) ] ;
#Echo " _ds = '" $(_ds) "'" ;
		_t = $(_t:D=) ;
#Echo " _t = '" $(_t) "'" ;
		_t = $(_t:G=$(_ds:J=!)) ;
#Echo " _t = '" $(_t) "'" ;

		# dst trumps all the others
		if $(3) = "dst" {
			if $($(_t)-target) != "dst" {
				NOMLOC on $(_t) = $(_d) ;
				if $(_dst) {
					if ! $(_ds) {
						_ds = $(DOT) ;
					}
					_d = [ _DirName [ _RootPath $(_ds) : $(_dst) ] ] ;
				}
				if $(_d) = "/" || $(_d) = "\\" {	# Jam has a bug when locating in root
					_d = $(_d). ;
				}
				LOCATE on $(_t) = $(_d) ;
				$(_t)-target = "dst" ;
			}

		# idst trumps src and isrc
		} else if $(3) = "idst" {
			if $($(_t)-target) != "dst" && $($(_t)-target) != "idst" {
				NOMLOC on $(_t) = $(_d) ;
				if $(_d) = "/" || $(_d) = "\\" {	# Jam has a bug when locating in root
					_d = $(_d). ;
				}
				LOCATE on $(_t) = $(_d) ;
				$(_t)-target = "idst" ;
			}

		# src trumps isrc
		} else if $(3) = "src" {
			if $($(_t)-target) != "dst" && $($(_t)-target) != "idst"
			                            && $($(_t)-target) != "src" {
				local _d1 _d2 ;
				NOMLOC on $(_t) = $(_d) ;
				if $(_src) {
					_d1 = [ _DirName [ _RootPath $(_src) : $(_ds) ] ] ;
				} else {
					_d1 = $(_d) ;
				}
				if $(_dst) {
					if ! $(_ds) {
						_ds = $(DOT) ;
					}
					_d2 = [ _DirName [ _RootPath $(_ds) : $(_dst) ] ] ;
				}
				if $(_d1) = "/" || $(_d1) = "\\" {	# Jam has a bug when locating in root
					_d1 = $(_d1). ;
				}
				if $(_d2) = "/" || $(_d2) = "\\" {	# Jam has a bug when locating in root
					_d2 = $(_d2). ;
				}
				# We assume that if we've got a DSTDIR here, then
				# it may apply to this source, even if it is never
				# gets labelled this way. - ie. it may be a dst of a
				# Jamfile with the same DSTDIR that's not in scope.
				SEARCH on $(_t) = $(_d2) $(_d1) ;
				$(_t)-target = "src" ;
			}

		# isrc is lowest priority
		} else if $(3) = "isrc" && ! $($(_t)-target) {
			if $(_d) = "/" || $(_d) = "\\" {	# Jam has a bug when locating in root
				_d = $(_d). ;
			}
			NOMLOC on $(_t) = $(_d) ;
			SEARCH on $(_t) = $(_d) ;
			$(_t)-target = "isrc" ;
		}
	
#Echo "On '" $(_t) "' set LOCATE = '" [ geton $(_t) : LOCATE ] "' SEARCH = '" [ geton $(_t) : SEARCH ] "' NOMLOC = '" [ geton $(_t) : NOMLOC ] "'" ; 
		_out += $(_t) ;
	}

#Echo "_NormTargets returns to '" $(_out) "'" ;
	return $(_out) ;
}

# Given a set of normalized paths, return the Target ID's for
# them (ie. Gristed version of path)
# IDs = _TargetIDs targpaths ;
rule _TargetIDs
{
	local _i _t _d _ds ;
	local _out = ;

#Echo "_TargetIDs got '" $(<) "'" ;
	for _i in $(<)
	{
		_d = $(_i:D) ;
		_ds = [ _SepPath $(_d) ] ;
		_t = $(_i:D=) ;
		_t = $(_t:G=$(_ds:J=!)) ;
		_out += $(_t) ;
	}

#Echo "_TargetIDs returning '" $(_out) "'" ;
	return $(_out) ;
}


# Copy the target related "on" variables from one
# target to another.
#rule CopyTarget dest : source ;
rule CopyTarget 
{
	NOMLOC on $(<) = [ geton $(>) : NOMLOC ] ;
	LOCATE on $(<) = [ geton $(>) : LOCATE ] ;
	SEARCH on $(<) = [ geton $(>) : SEARCH ] ;
}

# Make sure a non-target isn't LOCATED or SEARCH'd by
# setting LOCATE, SEARCH and NOMLOC to "" 
#rule NotTargets vars ;
rule NotTargets 
{
	NOMLOC on $(<) = "" ;
	LOCATE on $(<) = "" ;
	SEARCH on $(<) = "" ;
}

# Create a destination target by locating
# the given files in the given directory.
# The dir is assumed to be normalized.
# SRCDIR and DSTDIR are ignored.
# targs = SetTargetsLoc targs : dir ;
rule CreateIDstTargets
{
	local _o ;
#Echo "CreateIDstTargets got '" $(<) "' and '" $(>) "'" ;
	_o = [ NormIDstTargets $(<:BS) : $(>[1]) ] ;
#Echo "CreateIDstTargets returning '" $(_o) "'" ;
	return $(_o) ;
}

# Given a normalized target, return the
# orgiginal path to it. 
# (We use NOMLOC to do this.)
# path = DeNormTargs target ;
rule DeNormTargs
{
	local _i _t _p _out = ;
	
	for _i in $(<) {
		_p = [ geton $(_i) : NOMLOC ] ;
		_t = $(_i:G=) ;
		_out += $(_t:D=$(_p)) ;
	}

	return $(_out) ;
}

# Given a list of directories and a list of files,
# simply concatenate them in combination separated by a / 
# paths1/paths = CatPaths path1 : paths ;
rule CatPaths
{
	return $(<)$(SLASH)$(>) ;
}

# Try and locate a given file pattern starting from the current
# directory and working towards the root. 
# We use a heuristic to figure out when to stop, since
# Jam doesn't have pwd :-(
# found = FindRoot starting_dir : file ;
rule FindToRoot
{
	local dir = $(<[1]) ;
	local dir_list, prev_list = ;
	local dir_list;
	local found = ;

#Echo "FindToRoot got starting_dir '" $(<) "' file '" $(>) "'" ;
    found = [ GLOB $(dir) : $(>[1]) ] ;

	if $(found) {
		return $(found) ;
	}

#Echo "dir_list = " $(dir_list) ;

	dir_list = [ GLOB $(dir) : * ] ;
	while $(dir_list:D="") != $(prev_list:D="") {
		dir = $(dir)$(SLASH)$(DOTDOT) ;
#Echo "dir = " $(dir) ;
	    found = [ GLOB $(dir) : $(>[1]) ] ;

		if $(found) {
			return $(found) ;
		}

		prev_list = $(dir_list) ;
		dir_list = [ GLOB $(dir) : * ] ;
#Echo "dir_list = " $(dir_list) ;
	}
#Echo "returning " $(found) ;
	return $(found) ;
}

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

rule DoInit
{
	if ! $(DONEANCHORINIT) {
	
		SUBDIR ?= $(DOT) ;
		_SUBDIR ?= $(DOT) ;

		# initial "parent" settings
		P_ASFLAGS = ;
		P_CCFLAGS = ;
		P_C++FLAGS = ;
		P_LINKFLAGS = ;
		P_SHLINKFLAGS = ;
		P_HDRS = ;
		P_DEFINES = ;

		P_PREF_ASFLAGS = ;
		P_PREF_CCFLAGS = ;
		P_PREF_C++FLAGS = ;
		P_PREF_LINKFLAGS = ;
		P_PREF_SHLINKFLAGS = ;

		FindTop ;		# Look for a default project file 

		TRACESTDHDRS = false ;		# don't trace system path #include file dependenicies
		DONEANCHORINIT = true ;
	}
}

# Set the project top for this Jamfile and all sub Jamfiles
# until another top is set or we return.
# ProjTop d1 d2 .. ;
rule ProjTop
{
#Echo "ProjTop got '" $(<) "'" ;

	_TOP = [ _RatPath $(<) ] ;
	TOP = [ _DirName $(_TOP) ] ;

#Echo "ProjTop set TOP to '" $(TOP) "'" ;

	if ! $($(TOP)-SET) {	# Not tried to read the project file

		local found = [ GLOB $(_top) : $(JAMFILE) ] ;

		if $(found) {
			local save__SUBDIR = $(_SUBDIR) ;
			local save__INVSUBDIR = $(_INVSUBDIR) ;
			local save_SUBDIR = $(SUBDIR) ;

			_SUBDIR = $(_TOP) ;
			_INVSUBDIR = [ _InvertPath $(_SUBDIR) ] ;
			SUBDIR = [ _DirName $(_SUBDIR) ] ;
#Echo "_SUBDIR = '" $(_SUBDIR) "'" ; 
#Echo "_INVSUBDIR = '" $(_INVSUBDIR) "'" ; 

			# Translate SRCDIR for new SUBDIR
			if $(SRCDIR) {
#Echo "SRCDIR olddir '" $(SRCDIR) "'" ; 
				SRCDIR = [ _SepPath $(SRCDIR) ] ;
				SRCDIR = [ _RootPath $(_INVSUBDIR) : [ _RootPath $(SRCDIR) : $(_SUBDIR) ] ] ; 
				SRCDIR = [ _DirName [ _RatPath $(SRCDIR) ] ] ;
#Echo "SRCDIR newdir '" $(SRCDIR) "'" ; 
			}

#Echo "About to include Jamtop '" $(found) "'" ;
			include $(found) ;

			# Un Translate SRCDIR, in case it was set in the rules directory
			if $(SRCDIR) {
#Echo "_SUBDIR = '" $(_SUBDIR) "'" ; 
#Echo "_INVSUBDIR = '" $(_INVSUBDIR) "'" ; 
#Echo "SRCDIR newdir '" $(SRCDIR) "'" ; 
				SRCDIR = [ _SepPath $(SRCDIR) ] ;
				SRCDIR = [ _RootPath $(_SUBDIR) : [ _RootPath $(SRCDIR) : $(_INVSUBDIR) ] ] ; 
				SRCDIR = [ _DirName [ _RatPath $(SRCDIR) ] ] ;
#Echo "SRCDIR olddir '" $(SRCDIR) "'" ; 
			}

			# Restore things
			_SUBDIR = $(save__SUBDIR) ;
			_INVSUBDIR = $(save__INVSUBDIR) ;
			SUBDIR = $(save_SUBDIR) ;
		} else {
			Echo "WARNING :- no project " $(TOP) "Jamtop found" ;
		}
		
		$(TOP)-SET = true ;
	}
}

# Search for the project top by looking for the Jamtop
# starting at $(SUBDIR) and lookup upwards. 
# FindTop ;
rule FindTop
{
#Echo ;
#Echo "FindTop called SUBDIR = '" $(SUBDIR) "'" ;

	local _JRF = [ FindToRoot $(SUBDIR) : $(JAMTOP) ] ;

#Echo "FindTop found '" $(_JRF) "'" ;
	if $(_JRF) {

		_TOP = [ _RatPath [ _SepPath $(_JRF:D) ] ] ;
		TOP = [ _DirName $(_TOP) ] ;
#Echo "ProjTop set TOP to '" $(TOP) "'" ;

		if ! $($(TOP)-SET) {	# Not tried to read the project file
			local save__SUBDIR = $(_SUBDIR) ;
			local save__INVSUBDIR = $(_INVSUBDIR) ;
			local save_SUBDIR = $(SUBDIR) ;

			_SUBDIR = $(_TOP) ;
			_INVSUBDIR = [ _InvertPath $(_SUBDIR) ] ;
			SUBDIR = [ _DirName $(_SUBDIR) ] ;
#Echo "_SUBDIR = '" $(_SUBDIR) "'" ; 
#Echo "_INVSUBDIR = '" $(_INVSUBDIR) "'" ; 

			# Translate SRCDIR for new SUBDIR
			if $(SRCDIR) {
#Echo "SRCDIR olddir '" $(SRCDIR) "'" ; 
				SRCDIR = [ _SepPath $(SRCDIR) ] ;
				SRCDIR = [ _RootPath $(_INVSUBDIR) : [ _RootPath $(SRCDIR) : $(_SUBDIR) ] ] ; 
				SRCDIR = [ _DirName [ _RatPath $(SRCDIR) ] ] ;
#Echo "SRCDIR newdir '" $(SRCDIR) "'" ; 
			}

#Echo "About to include Jamtop '" $(_JRF) "'" ;
			include $(_JRF) ;
			$(TOP)-SET = true ;

			# Un Translate SRCDIR, in case it was set in the ruls directory
			if $(SRCDIR) {
#Echo "_SUBDIR = '" $(_SUBDIR) "'" ; 
#Echo "_INVSUBDIR = '" $(_INVSUBDIR) "'" ; 
#Echo "SRCDIR newdir '" $(SRCDIR) "'" ; 
				SRCDIR = [ _SepPath $(SRCDIR) ] ;
				SRCDIR = [ _RootPath $(_SUBDIR) : [ _RootPath $(SRCDIR) : $(_INVSUBDIR) ] ] ; 
				SRCDIR = [ _DirName [ _RatPath $(SRCDIR) ] ] ;
#Echo "SRCDIR olddir '" $(SRCDIR) "'" ; 
			}

			# Restore things
			_SUBDIR = $(save__SUBDIR) ;
			_INVSUBDIR = $(save__INVSUBDIR) ;
			SUBDIR = $(save_SUBDIR) ;
		}
	} else {
		Echo "WARNING :- no project Jamtop found, no TOP set !" ;

		if ! $(TOP) {
			TOP = $(DOT) ;		# set a default TOP 
			_TOP = $(DOT) ;
		}
	}
}

# Given a path relative to CWD, return the inverse direction
# path. Return nothing if the path is absolute.
# [ we're using a hack here, since Jam 2.5 doesn't have
#   any functions that will simply resolve a path relative
#   to CWD into an absolute path. ]
# d1 d2 .. = _InvertPath d1 d2 .. 
rule _InvertPath
{
	local _i _o _d ;
#Echo "_InvertPath got '" $(<) "'" ;
	if $(<[1]) = "/" || $(<[1]) = "\\" {
#Echo "_InvertPath returning nothing" ;
		return "" ;
	}
	if $(NT) {
		switch $(<[1]) {
			case *:* : {
#Echo "_InvertPath returning nothing" ;
				return "" ;
			}
		}
	}

	for _i in $(<) {
#Echo "_InvertPath _i = '" $(_i) "' _o = '" $(_o) "'" ;
		# Ignore .
		if $(_i) = $(DOT) {
			continue ;
		}
		# The hard one. Look amongst all the
		# sub directories for one that has the same
		# contents as the directory we came from.
		# Too bad if two directories have the same contents...
		if $(_i) = $(DOTDOT) {
			local _j;
			local _d1 _d2 _l1, _l2 _l3 ;

#Echo "_InvertPath inverting '" $(_i) "'" ;

			_d1 = [ _DirName $(_d) ] ; 
			_l1 = [ GLOB $(_d1) : * ] ;
#Echo "_d1 = '" $(_d1) "'" ;
			_d += $(_i) ;
			_d2 = [ _DirName $(_d) ] ; 
#Echo "_d2 = '" $(_d2) "'" ;
			_l2 = [ GLOB $(_d2) : * ] ;

			for _j in $(_l2) {
				if $(_j) = $(DOT) || $(_j) = $(DOTDOT) {
					continue ;
				}
#Echo "Checking _j = '" $(_j) "'" ;
				_l3 = [ GLOB $(_j) : * ] ;
#Echo "_l1 = '" $(_l1) "'" ;
#Echo "_l3 = '" $(_l3:BS) "'" ;
				if $(_l3:BS) = $(_l1) {
#Echo "Found reverse = '" $(_j) "'" ;
					_o = $(_j:BS) $(_o) ;
					break ;
				}
			}

		# The easy one. the opposite of a directory
		# is ..
		} else {
			_o = $(DOTDOT) $(_o) ;
			_d += $(_i) ;
		}
	}
	if ! $(_o) {
		_o = $(DOT) ;
	}

#Echo "_InvertPath returning '" $(_o) "'" ;
	return $(_o) ;
}

# Variables containing (possible) relative paths that are to remain
# anchored to where they were declared. This is to prevent
# NormPath in a sub-Jamfile assuming they are relative to that Jamfile.
# (This is a bit messy. How could it be avoided ? If there were
#  a simple way of making paths absolute, rather than computing eveything
#  relative to the invokation directory, it could help.)
ANCHORED_PATH_VARS = ;

# Variables to save before starting a new Jamfile, then
# restore once it's finished. 

SUBDIR_VARS = SUBDIR _SUBDIR TOP _TOP SRCDIR DSTDIR 
              P_ASFLAGS P_CCFLAGS P_C++FLAGS P_LINKFLAGS P_SHLINKFLAGS
              ASFLAGS CCFLAGS C++FLAGS LINKFLAGS SHLINKFLAGS
              P_PREF_ASFLAGS P_PREF_CCFLAGS P_PREF_C++FLAGS P_PREF_LINKFLAGS
              PREF_ASFLAGS PREF_CCFLAGS PREF_C++FLAGS PREF_LINKFLAGS PREF_SHLINKFLAGS
              P_HDRS HDRS
              P_DEFINES DEFINES
              P_LINKOBJS LINKOBJS
              P_LINKLIBS LINKLIBS
              P_LINKSHLIBS LINKSHLIBS
              P_SHLINKOBJS SHLINKOBJS
              P_SHLINKLIBS SHLINKLIBS
              P_SHLINKSHLIBS SHLINKSHLIBS
              ;

# Implement including a Jamfile from a sub or peer directory,
# Sub includes cause flags/headers/options to be inhereted
# from the calling Jamfile, while Peer includes do not.
# The global _JAMINCLUDE_PEER variable controls whether
# this is a sub or peer include.
# _JamInclude dir ;
rule _JamInclude
{
#Echo "_JamInclude called with '" $(<) "' SUBDIR '" $(SUBDIR) "' and _JAMINCLUDE_PEER '" $(_JAMINCLUDE_PEER) "'" ;

	# Save certain variables so that sub-Jamfiles don't affect them
	local _jamfile ;
	local _SUBDIR_VARS = $(SUBDIR_VARS) $(ANCHORED_PATH_VARS) ;
	local _i parent_$(_SUBDIR_VARS) ;

	for _i in $(_SUBDIR_VARS) {
		parent_$(_i) = $($(_i)) ;
	}

	if $(_JAMINCLUDE_PEER) != "true" {
		# Incorporate this levels extra flags & header paths into the base 
		P_ASFLAGS += $(ASFLAGS) ;
		P_CCFLAGS += $(CCFLAGS) ;
		P_C++FLAGS += $(C++FLAGS) ;
		P_LINKFLAGS += $(LINKFLAGS) ;
		P_SHLINKFLAGS += $(SHLINKFLAGS) ;
		P_HDRS = [ NormPaths $(HDRS) ] $(P_HDRS) ;
		P_DEFINES += $(DEFINES) ;
		P_LINKOBJS = [ NormPaths $(LINKOBJS) ] $(P_LINKOBJS) ;
		P_LINKLIBS = [ NormPaths $(LINKLIBS) ] $(P_LINKLIBS) ;
		P_LINKSHLIBS = [ NormPaths $(LINKSHLIBS) ] $(P_LINKSHLIBS) ;
		P_SHLINKOBJS = [ NormPaths $(SHLINKOBJS) ] $(P_SHLINKOBJS) ;
		P_SHLINKLIBS = [ NormPaths $(SHLINKLIBS) ] $(P_SHLINKLIBS) ;
		P_SHLINKSHLIBS = [ NormPaths $(SHLINKSHLIBS) ] $(P_SHLINKSHLIBS) ;

		# Set parent flags no existing parent flags
		if ! $(P_PREF_ASFLAGS) {
			P_PREF_ASFLAGS = $(PREF_ASFLAGS) ; }
		if ! $(P_PREF_CCFLAGS) {
			P_PREF_CCFLAGS = $(PREF_CCFLAGS) ; }
		if ! $(P_PREF_C++FLAGS) {
			P_PREF_C++FLAGS = $(PREF_C++FLAGS) ; }
		if ! $(P_PREF_LINKFLAGS) {
			P_PREF_LINKFLAGS = $(PREF_LINKFLAGS) ; }
		if ! $(P_PREF_SHLINKFLAGS) {
			P_PREF_SHLINKFLAGS = $(PREF_SHLINKFLAGS) ; }
	}
	
	# Set default for new Jamfile extra and preferred flags
	ASFLAGS = ;
	CCFLAGS = ;
	C++FLAGS = ;
	LINKFLAGS = ;
	SHLINKFLAGS = ;
	HDRS = ;
	DEFINES = ;
	LINKOBJS = ;
	LINKLIBS = ;
	LINKSHLIBS = ;
	SHLINKOBJS = ;
	SHLINKLIBS = ;
	SHLINKSHLIBS = ;

	PREF_ASFLAGS = ;
	PREF_CCFLAGS = ;
	PREF_C++FLAGS = ;
	PREF_LINKFLAGS = ;
	PREF_SHLINKFLAGS = ;

	_SUBDIR = [ _RatPath [ _RootPath $(_SUBDIR) : [ _SepPath $(<) ] ] ] ;
	_INVSUBDIR = [ _InvertPath $(_SUBDIR) ] ;
	SUBDIR = [ _DirName $(_SUBDIR) ] ;

#Echo "new _SUBDIR =" $(_SUBDIR) ;
#Echo "new _INVSUBDIR =" $(_INVSUBDIR) ;

	if $(_INVSUBDIR) != "." {
		# Keep paths relative to where they were defined, so that
		# NormPaths doesn't think they are relative to the sub-Jamfile.
#Echo "Before ANCHORED_PATH_VARS = $(ANCHORED_PATH_VARS) vals $($(ANCHORED_PATH_VARS))" ;
		for _i in $(ANCHORED_PATH_VARS) {
			$(_i) = [ RootPaths $(_INVSUBDIR) : $($(_i)) ] ;
		}
#Echo "After ANCHORED_PATH_VARS = $(ANCHORED_PATH_VARS) vals $($(ANCHORED_PATH_VARS))" ;
	}

	# Translate SRCDIR for new SUBDIR
#Echo "SRCDIR olddir '" $(SRCDIR) "'" ; 
	if $(SRCDIR) {
		local subdir = $(_SUBDIR[2-]) ;
		local invsubdir = [ FReverse $(_INVSUBDIR) ] ;
		invsubdir = [ FReverse $(invsubdir[2-]) ] ;
#Echo "subdir-1 =" $(subdir) ;
#Echo "invsubdir-1 =" $(invsubdir) ;
		SRCDIR = [ _SepPath $(SRCDIR) ] ; 
		SRCDIR = [ _RootPath $(invsubdir) : [ _RootPath $(SRCDIR) : $(subdir) ] ] ; 
		SRCDIR = [ _DirName [ _RatPath $(SRCDIR) ] ] ;
#Echo "SRCDIR newdir '" $(SRCDIR) "'" ; 
	}

	_jamfile = [ NormSrcPaths $(JAMFILE) ] ;

#Echo "About to include " $(_jamfile) ;
	include $(_jamfile) ;

	# Restore variable before returning 
	for _i in $(_SUBDIR_VARS) {
		$(_i) = $(parent_$(_i)) ;
	}

#Echo "Done include " $(JAMFILE:D=$(_subdir)) ;
#Echo "restored SUBDIR =" $(SUBDIR) ;
#Echo "_JamInclude done" ;
}

# Invoke a Jamfile as a sub Jamfile
# SubInclude dir ;
rule SubInclude
{
#Echo "### SubInclude called with '" $(<[1]) "' and SUBDIR = '" $(SUBDIR) "'" ;
	_JAMINCLUDE_PEER = "false" ;	# This is a sub include
	return [ _JamInclude $(<) ] ;
}

# Invoke a Jamfile in as a peer Jamfile
# PeerInclude dir ;
rule PeerInclude
{
#Echo "### PeerInclude called with '" $(<[1]) "' and SUBDIR = '" $(SUBDIR) "'" ;
	_JAMINCLUDE_PEER = "true" ;	# This is a peer include
	return [ _JamInclude $(<) ] ;
}

# ===========================================================
#
# Rules
#

# Public As
# As obj : source.s ;					.s -> .o
rule As
{
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<[1]:S=$(SUFOBJ)) ] ;
	local _s = [ NormSrcTargets $(>) ] ;

	Depends $(_t) : $(_s) ;
	Depends obj : $(_t) ;
	MakeLocate $(_t) ;

	HDRS on $(_t) = [ geton $(_t) : SEARCH ] [ NormPaths $(HDRS) ] $(P_HDRS) ;
}

# Internal As
rule As_
{
	local pref_asflags = $(P_PREF_ASFLAGS) ;
	pref_asflags ?= $(PREF_ASFLAGS) ;
	ASFLAGS1 on $(<) = $(P_ASFLAGS) $(ASFLAGS) ;
	ASFLAGS2 on $(<) = $(pref_asflags) ;
	ASFLAGS on $(<) = [ geton $(<) : ASFLAGS1 ] [ geton $(<) : ASFLAGS2 ] ;
	ASHDRS on $(<) = [ on $(<) FIncludes $(HDRS) ] ;
}

# copies sources into directory.
# SRCDIR and DSTDIR will be ignored.
# Bulk directory : sources ;
rule Bulk
{
#Echo "Bulk got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ; # Directory
	local _s = [ NormSrcTargets $(>) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir
	local _is _it ;			# individual source and target

	for _is in $(_s)
	{
		_it = $(_t[1]) ;
		_t = $(_t[2-]) ;	# Track _is 

		Depends files : $(_it) ;
		Depends $(_it) : $(_is) ;
		MakeLocate $(_it) ;
		File_ $(_it) : $(_is) ;
		MODE on $(_it) = $(FILEMODE) ;
		Chmod_ $(_it) ;
	}
}

# Cc object : source : flags : defines : hdrpaths ; 
rule Cc
{
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<[1]:S=$(SUFOBJ)) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Depends $(_t) : $(_s) ;
	Depends obj : $(_t) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;

	HDRS on $(_t) = [ geton $(_t) : SEARCH ] [ NormPaths $(HDRS) ] $(P_HDRS) ;
	SOURCE on $(_t) = $(_s) ;

	HDRRULE on $(_s) = HdrRule ;
	HDRSCAN on $(_s) = $(HDRPATTERN) ;
	# Construct HDRSEARCH so that we can know where to look for headers
	local _dot = [ geton $(_>) : NOMLOC ] ;
	if ! $(_dot) { _dot = $(DOT) ; }
	HDRSEARCH1 on $(_s) = $(_dot) ;
	HDRSEARCH2 on $(_s) = [ NormPaths $(HDRS) ] $(P_HDRS) ;
	HDRSEARCH3 on $(_s) = [ NormPaths $(STDHDRS) ] ;
	HDRSEARCH on $(_s) = [ geton $(_s) : HDRSEARCH1 ] [ geton $(_s) : HDRSEARCH2 ]
	                     [ geton $(_s) : HDRSEARCH3 ] ;
#Echo "Cc set HDRSEARCH on '" $(_s) "' to '" [ geton $(_s) : HDRSEARCH ] "'" ;

	# propagate target specific-defines

	DEFINES on $(_t) = $(P_DEFINES) $(DEFINES) ;

	Cc_ $(_t) : $(_s) : $(3) ;

	if $(3) {
		ObjectCcFlags $(<) : $(3) ;
	}
	if $(4) {
		ObjectDefines $(<) : $(4) ;
	}
	if $(5) {
		ObjectHdrs $(<) : $(5) ;
	}
}

# Internal Cc
# Cc_ object : sources ;
rule Cc_
{
	# If the compiler's -o flag doesn't work, relocate the .o
	if $(RELOCATE)
	{
		CcMv $(<) : $(>) ;
	}

	local pref_ccflags = $(P_PREF_CCFLAGS) ;
	pref_ccflags ?= $(PREF_CCFLAGS) ;
	# Make sure we incorporate any CCFLAGS[12] on object into total
	CCFLAGS1 on $(<) += $(P_CCFLAGS) $(CCFLAGS) ;
	CCFLAGS2 on $(<) += $(pref_ccflags) ;
	CCFLAGS on $(<) = [ geton $(<) : CCFLAGS1 ] [ geton $(<) : CCFLAGS2 ] ;

#Echo "Cc object '" $(<) "' got CCFLAGS1 '" [ geton $(<) : CCFLAGS1 ] "' and CCFLAGS2 '" [ geton $(<) : CCFLAGS2 ] "' for total CCFLAGS '" [ geton $(<) : CCFLAGS ] "'" ;

	# Make sure the CCHDRS and CCDEFS are formatter correctly
	CCHDRS on $(<) = [ on $(<) FIncludes $(HDRS) ] ;
	CCDEFS on $(<) = [ on $(<) FDefines $(DEFINES) ] ;
}

# C++ object : source : flags : defines : hdrpaths ; 
rule C++
{
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<[1]:S=$(SUFOBJ)) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Depends $(_t) : $(_s) ;
	Depends obj : $(_t) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;

	HDRS on $(_t) = [ geton $(_t) : SEARCH ] [ NormPaths $(HDRS) ] $(P_HDRS) ;
	SOURCE on $(_t) = $(_s) ;

	HDRRULE on $(_s) = HdrRule ;
	HDRSCAN on $(_s) = $(HDRPATTERN) ;
	# Construct HDRSEARCH so that we can know where to look for headers
	local _dot = [ geton $(_>) : NOMLOC ] ;
	if ! $(_dot) { _dot = $(DOT) ; }
	HDRSEARCH1 on $(_s) = $(_dot) ;
	HDRSEARCH2 on $(_s) = [ NormPaths $(HDRS) ] $(P_HDRS) ;
	HDRSEARCH3 on $(_s) = [ NormPaths $(STDHDRS) ] ;
	HDRSEARCH on $(_s) = [ geton $(_s) : HDRSEARCH1 ] [ geton $(_s) : HDRSEARCH2 ]
	                     [ geton $(_s) : HDRSEARCH3 ] ;

	# propagate target specific-defines

	DEFINES on $(_t) = $(P_DEFINES) $(DEFINES) ;

	C++_ $(_t) : $(_s) ;

	if $(3) {
		ObjectC++Flags $(<) : $(3) ;
	}
	if $(4) {
		ObjectDefines $(<) : $(4) ;
	}
	if $(5) {
		ObjectHdrs $(<) : $(5) ;
	}
}

# Internal C++
# C++_ object : sources ;
rule C++_
{
	# If the compiler's -o flag doesn't work, relocate the .o
	if $(RELOCATE)
	{
		CcMv $(<) : $(>) ;
	}

	local pref_c++flags = $(P_PREF_C++FLAGS) ;
	pref_c++flags ?= $(PREF_C++FLAGS) ;
	# Make sure we incorporate any C++FLAGS[12] on object into total
	C++FLAGS1 on $(<) += $(P_C++FLAGS) $(C++FLAGS) ;
	C++FLAGS2 on $(<) += $(pref_c++flags) ;
	C++FLAGS on $(<) = [ geton $(<) : C++FLAGS1 ] [ geton $(<) : C++FLAGS2 ] ;

	# Make sure the CCHDRS and CCDEFS are formatter correctly
	CCHDRS on $(<) = [ on $(<) FIncludes $(HDRS) ] ;
	CCDEFS on $(<) = [ on $(<) FDefines $(DEFINES) ] ;
}

rule Chmod_
{
#Echo "Chmod_ on '" $(<) "' with MODE = '" [ geton $(<) : MODE ] "'" ; 
	if $(CHMOD) { Chmod1 $(<) ; }
}

# Public use Depends that does normalisation of its targets
# (non-normalizing Depends is a built in)
# NDepends dest : source ;			make dependency
rule NDepends {
	local _t _s ;
	local _p = ;

#Echo "NDepends got '" $(<) "' and '" $(>) "'" ;

	# Don't anchor psuedo targets
	switch $(<)
	{
       case all : _p = true ;
       case first : _p = true ;
       case shell : _p = true ;
       case files : _p = true ;
       case lib : _p = true ;
       case exe : _p = true ;
       case obj : _p = true ;
       case dirs : _p = true ;
       case clean : _p = true ;
       case install : _p = true ;
       case uninstall : _p = true ;
	}

	# Normalize target names and set Grist LOCATE and SOURCE
	if ! $(_p) {
		_t = [ NormDstTargets $(<) ] ;
	} else {
		_t = $(<) ;
	}
	_s = [ NormSrcTargets $(>) ] ;

#Echo "Passing Depends '" $(_t) "' and '" $(_s) "'" ;

	Depends $(_t) : $(_s) ;
}

# Public use NoUpdate that does normalisation of its targets
# (non-normalizing NoUpdate is a built in)
# NNoUpdate dest ;			Make sure created, but don't update
rule NNoUpdate {
	local _t ;
	local _p = ;

#Echo "NNoUpdate got '" $(<) "'" ;

	# Don't anchor psuedo targets
	switch $(<)
	{
       case all : _p = true ;
       case first : _p = true ;
       case shell : _p = true ;
       case files : _p = true ;
       case lib : _p = true ;
       case exe : _p = true ;
       case obj : _p = true ;
       case dirs : _p = true ;
       case clean : _p = true ;
       case install : _p = true ;
       case uninstall : _p = true ;
	}

	# Normalize target names and set Grist LOCATE and SOURCE
	if ! $(_p) {
		_t = [ NormDstTargets $(<) ] ;
	} else {
		_t = $(<) ;
	}
	_s = [ NormSrcTargets $(>) ] ;

#Echo "Passing NoUpdate '" $(_t) "'" ;

	NoUpdate $(_t) ;
}

# Public use Includes that does normalisation of its targets
# (non-normalizing Includes is a built in)
# NDepends dest : source ;			make dependency
rule NIncludes {
	local _t _s ;
	local _p = ;

#Echo "NIncludes got '" $(<) "' and '" $(>) "'" ;

	# Normalize target names and set Grist LOCATE and SOURCE
	_t = [ NormDstTargets $(<) ] ;
	_s = [ NormSrcTargets $(>) ] ;

#Echo "Passing Includes '" $(_t) "' and '" $(_s) "'" ;

	Includes $(_t) : $(_s) ;
}

# sets mode of file
# Mod target : mode ;
rule Mod
{
	local _t = [ NormIDstTargets $(<[1]) ] ;
	MODE on $(_t) = $(>) ;
	Chmod_ $(_t) ;
}

# copies source onto target.
# SRCDIR and DSTDIR will be ignored.
# File target : source ;
rule File
{
	local _t = [ NormIDstTargets $(<[1]) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Depends files : $(_t) ;
	Depends $(_t) : $(_s) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;
	File_ $(_t) : $(_s) ;
	MODE on $(_t) = $(FILEMODE) ;
	Chmod_ $(_t) ;
}

# copies source onto target, but doesn't clean source.
# SRCDIR and DSTDIR will be ignored.
# File target : source ;
rule FileNoClean
{
	local _t = [ NormIDstTargets $(<[1]) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Depends files : $(_t) ;
	Depends $(_t) : $(_s) ;
	MakeLocate $(_t) ;
	File_ $(_t) : $(_s) ;
	MODE on $(_t) = $(FILEMODE) ;
	Chmod_ $(_t) ;
}

# Fake file copy. Creates a dependence to work around
# problem that Jam doesn't understand two products from one action.
# FakeFile target : source ;
rule FakeFile
{
	local _t = [ NormIDstTargets $(<[1]) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	FakeFile_ $(_t) : $(_s) ;
}

rule FakeFile_
{
	local _t = $(<) ;
	local _s = $(>) ;

	Depends files : $(_t) ;
	Depends $(_t) : $(_s) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;
}


# Compile Fortran source file into object
# Fortran object : source ; 
rule Fortran
{
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<[1]:S=$(SUFOBJ)) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Depends $(_t) : $(_s) ;
	Depends obj : $(_t) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;

	Fortran_ $(_t) : $(_s) ;
}

# Internal Fortran
rule Fortran_
{
}


# NOTE! Perhaps GenFileND and GenFileNND could be replaced by a GenFile
# with a $(3) for the dependecies ?

# All > are assumed to be files that < is dependent on
# with >[1] being an executable
# SRCDIR and DSTDIR are ignored.
rule GenFile 
{
#Echo "GenFile got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormIDstTargets $(<) ] ;
	local _s = [ NormISrcTargets $(>[1]:S=$(SUFEXE)) ] ;
	local _a = [ NormISrcTargets $(>[2-]) ] ;

#Echo "GenFile normed '" $(_t) "' and '" $(_s) "' plus '" $(_a) "'" ;
 
	Depends $(_t) : $(_s) $(_a) ;
	if ! $(_s[1]:G) {		# In case PATH doesn't have . in it.
		_s = $(DOT)$(SLASH)$(_s[1]:G=) $(_s[2-]) ;
		NotTargets $(_s) ;
		NoCare $(_s) ;
		NotFile $(_s) ;
	}
	GenFile1 $(_t) : $(_s) $(_a) ;
	Clean clean : $(_t) ;
}

rule GenFile1
{
	MakeLocate $(<) ;
}

# Only >[1] is assumed to be an executable that < is dependent on.
# $(3) are optional extra dependecies
# SRCDIR and DSTDIR are ignored.
rule GenFileND 
{
#Echo "GenFileND got '$(<)' and '$(>)' and src targets '$(_d)'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormIDstTargets $(<[1]) ] ;
	local _s = [ NormISrcTargets $(>[1]:S=$(SUFEXE)) ] ;
	local _a = $(>[2-]) ;
	_a = $(_a:J=" ") ;
	local _d = [ NormSrcTargets $(3) ] ;

#Echo "GenFileND normed '$(_t)' and '$(_s)' plus '$(_a)' and src targets '$(_d)'" ;

	NotTargets $(_a) ;
	NoCare $(_a) ;
	NotFile $(_a) ;			# Supresses "independent target", but may mark a directory wrongly
	Depends $(_t) : $(_s) $(_d) ;
#Echo "GenFileND set Depends '$(_t)' and '$(_s)' and '$(_d)'" ;

	if ! $(_s[1]:G) {		# In case PATH doesn't have . in it.
		_s = $(DOT)$(SLASH)$(_s[1]) $(_s[2-]) ;
		NotTargets $(_s) ;
		NoCare $(_s) ;
		NotFile $(_s) ;
	}
	GenFileND1 $(_t) : $(_s) $(_a) ;

	Clean clean : $(_t) ;
}

rule GenFileND1
{
	MakeLocate $(<) ;
}

# GenFileNND target : program args : extra_dependecies ;
# None of > is assumed to be a file.
# $(3) are optional extra dependecies
# SRCDIR and DSTDIR are ignored.
rule GenFileNND 
{
#Echo "GenFileNND got '$(<)' and '$(>)' and src targets '$(3)' " ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormIDstTargets $(<) ] ;
	local _a = $(>) ;
	_a = $(_a:J=" ") ;		# Split up by space delimeter ?
	local _d = [ NormSrcTargets $(3) ] ;

#Echo "GenFileNND normed '$(_t)' plus '$(_a)' and src targets '$(_d)'" ;

	Depends files : $(_t) ;
	Depends $(_t) : $(_d) ;

	NotTargets $(_a) ;
	NoCare $(_a) ;
	NotFile $(_a) ;			# Supresses "independent target", but may mark a directory wrongly
	
	GenFileNND1 $(_t) : $(_a) ;
	Clean clean : $(_t) ;
}

rule GenFileNND1
{
#Echo "GenFileNND1 got "' $(<) "' and "' $(>) "'" ;
	MakeLocate $(<) ;
}

# GenFileNNDnc target : program args : extra_dependecies ;
# Same as GenFileNND but don't clean the target.
# None of > is assumed to be a file.
# $(3) are optional extra dependecies
# SRCDIR and DSTDIR are ignored.
rule GenFileNNDnc 
{
#Echo "GenFileNNDnc got '$(<)' and '$(>)' and src targets '$(3)' " ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormIDstTargets $(<) ] ;
	local _a = $(>) ;
	_a = $(_a:J=" ") ;		# Split up by space delimeter ?
	local _d = [ NormSrcTargets $(3) ] ;

#Echo "GenFileNNDnc normed '$(_t)' plus '$(_a)' and src targets '$(_d)'" ;

	Depends files : $(_t) ;
	Depends $(_t) : $(_d) ;

	NotTargets $(_a) ;
	NoCare $(_a) ;
	NotFile $(_a) ;			# Supresses "independent target", but may mark a directory wrongly
	
	GenFileNND1 $(_t) : $(_a) ;
}

# Concatenate all the argument to the file 
# Each argument to a separate line
# If no arguments, create empty file
# SRCDIR and DSTDIR are ignored.
rule CatToFile 
{
#Echo "CatToFile got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormIDstTargets $(<) ] ;

	MakeLocate $(_t) ;
	Depends files : $(_t) ;
	NotFile $(2) $(3) $(4) $(5) $(6) $(7) $(8) $(9) ;

	Clean clean : $(_t) ;

	if ! $(>) {
		CreateCatFile_ $(_t) ;

	} else {
		if $(2) {
			CatToFile_ $(_t) : $(2) ;
		}
		if $(3) {
			CatToFile_ $(_t) : $(3) ;
		}
		if $(4) {
			CatToFile_ $(_t) : $(4) ;
		}
		if $(5) {
			CatToFile_ $(_t) : $(5) ;
		}
		if $(6) {
			CatToFile_ $(_t) : $(6) ;
		}
		if $(7) {
			CatToFile_ $(_t) : $(7) ;
		}
		if $(8) {
			CatToFile_ $(_t) : $(8) ;
		}
		if $(9) {
			CatToFile_ $(_t) : $(9) ;
		}
	}
}

rule HardLink
{
	local _t = [ NormDstTargets $(<) ] ;
	local _s = [ NormSrcTargets $(>) ] ;

	Depends files : $(_t) ;
	Depends $(_t) : $(_s) ;

	HardLink_ $(_t) : $(_s) ;
}

# Mark executable as GUI applications (ie. OS X Bundle)
# GuiImages images ;
rule GuiBin
{
	local _t = [ NormDstTargets $(<:S=$(SUFEXE)) ] ;
	GUIAPP on $(_t) = "true" ;
}

rule GUIAPP
{
}

# /HdrMacroFile
#
# this rule is specific to FT-Jam. It is used to indicate that a given file
# contains definitions for filename macros (e.g. "#define MYFILE_H <myfile>.h")
# that can later be used in #include statements in the rest of the source
#
# these files must be parsed before any make is tried.
#
rule HdrMacroFile
{
  HDRMACRO $(<) ;
}

# Handle #includes that are found.
# Try and locate them to asociate them with declared targets, as
# well as tracing any further #includes they may have.
# HdrRule NormedSource : headers ;
rule HdrRule
{
	# N.B.		This rule is called during binding, potentially after
	# the fate of many targets has been determined, and must be
	# used with caution: don't add dependencies to unrelated
	# targets, and don't set variables on $(<).

#Echo "HdrRule got '" $(<) "' and '" $(>) "'" ;

	local _d = [ geton $(<) : NOMLOC ] ;		# Directory location of source file
	local _schpath = [ geton $(<) : HDRSEARCH ] ;	# Search path used to find these
	local _s _ts ;				# include source targets, sources to trace

#Echo "HDRSEARCH on '" $(<) "' is = '" $(_schpath) "'" ; 

	# See if we can locate the header amongst the generated files.
#Echo "Checking for matches of known targets" ;
	local _i _j _k _ss _sp _n ;
	local _stdhdrs = [ NormPaths $(STDHDRS) ] ;
	_st = ;
	for _j in $(>) {
		_sp = ;			# Search path
		_ss = ;			# Resolved source target
#Echo "Checking include '" $(_j) "'" ;
		for _k in $(_schpath)  "__unknown__" {		# search path and plain
			_n = [ NormPaths $(_j) : $(_k) ] ;		# Normalized path for that search path
			_i = [ _TargetIDs $(_n) ] ;				# Target ID/name if it exitsts
#Echo "Checking target ID '" $(_i)-target "' value '" $($(_i)-target) "'" ;
			if $($(_i)-target) {				# Target exists
				_ss = $(_i) ;
				_s += $(_ss) ;
#Echo "Found existing target '" $(_ss) "'" ;
				break ;
			} else if ! $($(_i)-target) {				# unknown state
#Echo "Unknown statis target '" $(_i) "'" ;
				_sp += [ NormPaths $(_j:D) : $(_k) ] ;	# paths to search
			}
		}
		if ! $(_ss) && $(_sp) {		# We've not seen that target 
			local _found = ;
#Echo "Searching for '" $(_j) "' in paths '" $(_sp) "'" ;
			# See if we can find the header
			_found = [ GLOB $(_sp) : $(_j:BS) ] ;

			# Hmm. This sort of works around Windows problem of std include files being upper case.
			# It won't solve the problem of tracing them if TRACESTDHDRS is true though.
			if $(NT) && ! $(_found) {
				_found = [ GLOB $(_sp) : $(_j:UBS) ] ;
				_found = $(_found:D)\\$(_found:LBS) ;
			}
			if $(_found) {
				_ss = [ NormSrcTargets $(_found[1]) ] ;		# Add it to our list
#Echo "Using new found target '" $(_ss) "'" ;
				_s += $(_ss) ;
			}
			# Mark off not found targets
			for _k in $(_schpath) {
				_n = [ NormPaths $(_j) : $(_k) ] ;	# Normalized path for that search path
				_i = [ _TargetIDs $(_n) ] ;			# Target ID/name if it exitsts
				if $(_i) = $(_ss) {
					break ;							# The one we found
				}
#Echo "marking off '" $(_i) "' as non-existant" ;
				$(_i)-target = "false" ;			# That combination doesn't exist
			}
			if ! $(_found) {
				_k = "__unknown__" ;
				_ss = [ NormSrcTargets $(_j) : $(_k) ] ;
				# ~~99 This would make good warning information ?
#Echo "Include unresolved: '" $(_ss) "'" ;
				_s += $(_ss) ;	# Use plain header name as target ID
			}
		}
		# We're left with $(_ss_) being the target and $(_k) being the search path 

		# Add this to our list that will also be scanned for #includes
#Echo "Dealt with'" $(_j) "', _ss = '" $(_ss) "' and _k = '" $(_k) "'" ;
		if  ( ! $(_k) in "__unknown__" )
		 && ( $(TRACESTDHDRS) = true || ! $(_k) in $(_stdhdrs) )  {
			_st += $(_ss) ;
		} 
	}

#Echo "Normalized includes = '" $(_s) "'" ;
#Echo "Includes to be traced = '" $(_st) "'" ;

	# Propagate on $(<) to $(>)
	# Compute header search path for any #includes in these #includes

	if $(_st)  {
		HDRSEARCH2 on $(_st) = [ geton $(<) : HDRSEARCH2 ] ;
		HDRSEARCH3 on $(_st) = [ geton $(<) : HDRSEARCH3 ] ;
		for _i in $(_st) {
			# Replace file dot/HDRSEARCH1 with one for this file
			local _dot = [ geton $(_i) : NOMLOC ] ;
			if ! $(_dot) { _dot = $(DOT) ; }
			HDRSEARCH1 on $(_i) = $(_dot) ;
			HDRSEARCH on $(_i) = [ geton $(_i) : HDRSEARCH1 ] [ geton $(_i) : HDRSEARCH2 ]
			                     [ geton $(_i) : HDRSEARCH3 ] ;
		}
		HDRSCAN on $(_st)   = [ geton $(<) : HDRSCAN ] ;
		HDRRULE on $(_st)   = [ geton $(<) : HDRRULE ] ;
		HDRGRIST on $(_st)  = [ geton $(<) : HDRGRIST ] ;
#Echo "HdrRule SEARCH on '" $(_st) "' set to '" [ geton $(_st) : SEARCH ] "'" ;
#Echo "HdrRule HDRSEARCH on '" $(_st) "' set to '" [ geton $(_st) : HDRSEARCH ] "'" ;
#Echo "HdrRule HDRSCAN on '" $(_st) "' set to '" [ geton $(_st) : HDRSCAN ] "'" ;
#Echo "HdrRule HDRRULE on '" $(_st) "' set to '" [ geton $(_st) : HDRRULE ] "'" ;
	}

	# Tell Jam that anything depending on $(<) also depends on $(>),
	# set SEARCH so Jam can find the headers, but then say we don't
	# care if we can't actually find the headers (they may have been
	# within ifdefs),

	NoCare $(_s) ;
	SEARCH on $(_s) = $(_schpath) ;		# Use search path used to find these #includes as Jam SEARCH path.
	Includes $(<) : $(_s) ;
}

# Public InstallInto 
# InstallInto dir : sources ;		install any files
rule InstallInto
{
#Echo "InstallInto got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ; # Directory
	local _s = [ NormSrcTargets $(>) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir
	_InstallInto $(_t) : $(_s) ;
}

# Private InstallInto
# Note that the install rules ignore SRDDIR and DSTDIR.
# InstallInto destinations : sources ;		install any files
rule _InstallInto
{
#Echo "_InstallInto got '" $(<) "' and '" $(>) "'" ;

	local _t = $(<) ;		# targets
	local _s = $(>) ;		# sources
	local _is _it ;			# individual source and target

	# Arrange for jam install
	# Arrange for jam uninstall
	# targets are in dir

	Depends install : $(_t) ;
	Clean uninstall : $(_t) ;
	MakeLocate $(_t) ;				# create directories

	# For each source, Install, Chmod, Chown, and Chgrp

	for _is in $(_s)
	{
		_it = $(_t[1]) ;
		_t = $(_t[2-]) ;	# Track _is 

#Echo "_InstallInto installing target '" $(_it) "' from src '" $(_is) "'" ;
		Depends $(_it) : $(_is) ;
		Install $(_it) : $(_is) ;
		Chmod_ $(_it) ;

		if $(OWNER) && $(CHOWN) 
		{ 
			Chown_ $(_it) ;
			OWNER on $(_it) = $(OWNER) ;
		}

		if $(GROUP) && $(CHGRP) 
		{ 
			Chgrp_ $(_it) ;
			GROUP on $(_it) = $(GROUP) ;
		}
	}
}

# InstallBin dir : sources ;		install binaries
rule InstallBin
{
#Echo "InstallBin got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ; # Directory
	local _s = [ NormSrcTargets $(>:S=$(SUFEXE)) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir
#Echo "InstallBin norm '" $(_d) "' and '" $(_s) "' and '" $(_t) "'" ;
	MODE on $(_t) = $(EXEMODE) ;
	_InstallInto $(_t) : $(_s) ;
#Echo "InstallBin done " ;
}

# InstallFile dir : sources ;		install files
rule InstallFile
{
#Echo "InstallFile got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ; # Directory
	local _s = [ NormSrcTargets $(>) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir
#Echo "InstallFile normed targ '" $(_t) "' src '" $(_s) "' and dir '" $(_d) "'" ;
	MODE on $(_t) = $(FILEMODE) ;
	_InstallInto $(_t) : $(_s) ;
}

# InstallLib dir : sources ;		install static library files
rule InstallLib
{
#Echo "InstallLib got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ; # Directory
	local _s = [ NormSrcTargets $(>:S=$(SUFLIB)) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir
	MODE on $(_t) = $(FILEMODE) ;
	_InstallInto $(_t) : $(_s) ;
}

# InstallShLib dir : sources ;		install shared library files
rule InstallShLib
{
#Echo "InstallShLib got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ; # Directory
	local _s = [ NormSrcTargets $(>:S=$(SUFSHLIB)) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir
	MODE on $(_t) = $(FILEMODE) ;
	_InstallInto $(_t) : $(_s) ;
}

# InstallShell dir : sources ;		install files
rule InstallShell
{
#Echo "InstallShell got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ; # Directory
	local _s = [ NormSrcTargets $(>) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir
	MODE on $(_t) = $(SHELLMODE) ;
	_InstallInto $(_t) : $(_s) ;
}

# InstallMan dir : sources ;		install files
rule InstallMan
{
#Echo "InstallMan got '" $(<) "' and '" $(>) "'" ;
	local _d = [ NormPaths $(<) ] ;	# Directory
	local _s = [ NormSrcTargets $(>) ] ;	# Sources
	local _t = [ CreateIDstTargets $(_s) : $(_d) ] ; # Relocate targs to dir

	# Really this just strips the . from the suffix

	local _is _it _tt _s _id ;

	_tt = $(_t) ;
	for _is in $(_s)
	{
		_it = $(_tt[1]) ;
		_tt = $(_tt[2-]) ;

		switch $(_is:S)
		{
			case .1 : s = 1 ; case .2 : s = 2 ; case .3 : s = 3 ;
			case .4 : s = 4 ; case .5 : s = 5 ; case .6 : s = 6 ;
			case .7 : s = 7 ; case .8 : s = 8 ; case .l : s = l ;
			case .n : s = n ; case .man : s = 1 ;
		}

		_id = [ RootPaths $(_d) : man$(_s) ] ;
		CreateIDstTargets $(_it) : $(_id) ;
		MODE on $(_it) = $(FILEMODE) ;
		_InstallInto $(_it) : $(_is) ;
	}
}

# Lex 
# Lex source.c : source.l ;
rule Lex
{
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<[1]) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Depends $(_t) : $(_s) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;

	Lex_ $(_t) : $(_s) ;
}

# Internal Lex
rule Lex_
{
	LexMv_ $(<) : $(>) ;
}

# Library - create a static library from sources.
# Library library : sources : flags : defines : hdrpaths : objects ; 
rule Library
{
	LibraryFromObjects $(<) : $(>) $(6) ;
	Objects $(>) : $(3) : $(4) : $(5) ;
}

# LibraryFromObjects - create a static library from object files.
# LibraryFromObjects library : objects ;
rule LibraryFromObjects
{
	local _i ;

#Echo "LibraryFromObjects got " $(<) "and" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _l = [ NormDstTargets $(<[1]:S=$(SUFLIB)) ] ;
	local _s = [ NormSrcTargets $(>:S=$(SUFOBJ)) ] ;
#Echo "LibraryFromObjects nomed = " $(_l) "and" $(_s) ;

	Depends lib : $(_l) ;

	MakeLocate $(_l) ;

	if $(NOARSCAN) 
	{ 
		# If we can't scan the library to timestamp its contents,
		# we have to just make the library depend directly on the
		# on-disk object files.  

		Depends $(_l) : $(_s) ;
	}
	else
	{
		# If we can scan the library, we make the library depend
		# on its members and each member depend on the on-disk
		# object file.

		for _i in $(_s)
		{
			local _m ;
			_m = $(_l:M=$(_i:BS)) ;
			CopyTarget $(_m) : $(_l) ;	# Transfer LOCATE, SEARCH, NOMLOC
			Depends $(_l) : $(_m) ;
			Depends $(_m) : $(_i) ;
		}
	}

	Clean clean : $(_l) ;

	if $(CRELIB) {
		CreLib $(_l) : $(_s[1]) ;
	}

	Archive $(_l) : $(_s) ;

	if $(RANLIB) {
		Ranlib $(_l) ;
	}

	# If we can't scan the library, we have to leave the .o's around.
	if ! ( $(NOARSCAN) || $(NOARUPDATE) ) {
		local _ds ;
		for _i in $(_s) {
			# Don't delete any objects that we've marked with KEEPOBJS
			if ! [ geton $(_i) : KEEPOBJS ] {
				_ds += $(_i) ;
			}
		}
		if $(_ds) {
			RmTemps_ $(_l) : $(_ds) ;
		}
	}
}

# LibraryFromLibraries - create a static library from object files and static libraries.
# LibraryFromLibraries library : libraries ;
rule LibraryFromLibraries
{
	local _i ;

#Echo "LibraryFromLibraries got " $(<) "and" $(>) ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _l = [ NormDstTargets $(<[1]:S=$(SUFLIB)) ] ;
	local _s = [ NormSrcTargets $(>:S=$(SUFLIB)) ] ;
#Echo "LibraryFromObjects nomed = " $(_l) "and" $(_s) ;

	Depends lib : $(_l) ;
	Depends $(_l) : $(_s) ;

	MakeLocate $(_l) ;

	Clean clean : $(_l) ;

	if $(CRELIB) {
		CreLib $(_l) : $(_s[1]) ;
	}

	ArchiveArchive $(_l) : $(_s) ;
}

# ShLibrary - create a shared library from sources.
# ShLibrary library : sources : flags : defines : hdrpaths : objects : libs : shlibs ; 
rule ShLibrary
{
	ShLibraryFromObjects $(<) : $(>) $(6) : $(7) : $(8) ;
	Objects $(>) : $(CCSHOBJFLAG) $(3) : $(4) : $(5) ;
}

# ShLibraryFromObjects - create a shared library from object files.
# Both the import (if used on the system) and shared library will be created.
# ShLibraryFromObjects shlib : objects : libs : shlibs ;
rule ShLibraryFromObjects
{
	local _i _l ;

#Echo "ShLibraryFromObjects got " $(<) "and" $(>) ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _sl = [ NormDstTargets $(<[1]:S=$(SUFSHLIB)) ] ;
	if $(NT) {
		_l = [ NormDstTargets $(<[1]:S=$(SUFIMPLIB)) ] ;
	}
	local _s = [ NormSrcTargets $(>:S=$(SUFOBJ)) ] ;
#Echo "ShLibraryFromObjects nomed =" $(_sl) "and" $(_l) "and" $(_s) ;

	Depends lib : $(_sl) ;
#	Depends lib : $(_l) ;
	MakeLocate $(_sl) ;

	Depends $(_sl) : $(_s) ;
	Clean clean : $(_sl) $(_l) ;

	if $(_l) {
		Depends $(_l) : $(_s) ;
		Clean clean : $(_l:S=.exp) ;
	}

#Echo "ShLibraryFromObjects SHLINKFLAGS = '" $(SHLINKFLAGS) "' and P_SHLINKFLAGS ='" $(P_LSHINKFLAGS) "'" ;

	if $(SHLINKFLAGS) || $(P_SHLINKFLAGS)
	 || $(PREF_SHLINKFLAGS) || $(P_PREF_SHLINKFLAGS) {
		local pref_shlinkflags = $(P_PREF_SHLINKFLAGS) ;
		pref_shlinkflags ?= $(PREF_SHLINKFLAGS) ;
		SHLINKFLAGS on $(_sl) += $(P_SHLINKFLAGS) $(SHLINKFLAGS) $(pref_shlinkflags) ;
	}

#Echo "ShLibraryFromObjects SHLINKOBJS = '" $(SHLINKOBJS) "' and P_SHLINKOBJS ='" $(P_SHLINKOBJS) "'" ;
	if $(SHLINKOBJS) || $(P_SHLINKOBJS) {
		local _o = [ NormSrcTargets $(SHLINKOBJS:S=$(SUFOBJ)) ] $(P_SHLINKOBJS:S=$(SUFOBJ)) ;
		Depends $(_sl) : $(_o) ;
		SHLINKOBJS on $(_sl) += $(_o) ;
	}

#Echo "ShLibraryFromObjects SHLINKLIBS = '" $(SHLINKLIBS) "' and P_SHLINKLIBS ='" $(P_SHLINKLIBS) "'" ;
	if $(SHLINKLIBS) || $(P_SHLINKLIBS) {
		local _l = [ NormSrcTargets $(SHLINKLIBS:S=$(SUFLIB)) ] $(P_SHLINKLIBS:S=$(SUFLIB)) ;
		Depends $(_sl) : $(_l) ;
		SHLINKLIBS on $(_sl) += $(_l) ;
	}

#Echo "ShLibraryFromObjects SHLINKSHLIBS = '" $(SHLINKSHLIBS) "' and P_SHLINKSHLIBS ='" $(P_SHLINKSHLIBS) "'" ;
	if $(SHLINKSHLIBS) || $(P_SHLINKSHLIBS) {
		local _l = [ NormSrcTargets $(SHLINKSHLIBS:S=$(SUFSHLIB)) ] $(P_SHLINKSHLIBS:S=$(SUFSHLIB)) ;
		Depends $(_sl) : $(_l) ;
		SHLINKSHLIBS on $(_sl) += $(_l) ;
	}

	if $(SHLINKDEFFILE) {	# Windows special option
		SHLINKDEFFILE on $(_sl) $(_l) = [ NormSrcTargets $(SHLINKDEFFILE) ] ;
		Depends $(_sl) : [ geton $(_sl) : SHLINKDEFFILE ] ;
		FakeFile_ $(_l) : $(_sl) ;		# .lib is created with .dll
		ShLinkDef_ $(_sl) $(_l) : $(_s) ;
	} else {
		if (SHLINKSEARCHEXEPATH) {		# UNIX special option
	
			if $(OS) = MACOSX {		# OS X version of ld
				SHLINKSEARCHEXEPATH = @executable_path/ ;
			} else {
#				SHLINKSEARCHEXEPATH = \\$PATH/ ;
				SHLINKSEARCHEXEPATH = \\$ORIGIN/ ;
			}
		}
		ShLink_ $(_sl) $(_l) : $(_s) ;
	}

	# Try and make sure the objects are build with the correct flag
	ObjectCcFlags $(>) : $(CCSHOBJFLAG) ;
	ObjectC++Flags $(>) : $(CCSHOBJFLAG) ;

	if $(3) {
		ShLibraryLibraries $(<) : $(3) ;	
	}
	if $(4) {
		ShLibraryShLibraries $(<) : $(4) ;	
	}
}

# Internal link
rule Link_
{
	MODE on $(<) = $(EXEMODE) ;
	Chmod_ $(<) ;
}

# Make the shared library link with the given objects.
# This is just a way of adding common object files to many shlibs.
# ShLibraryObjects shlib : objects ;
rule ShLibraryObjects
{
#Echo "ShLibraryObjects got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<:S=$(SUFSHLIB)) ] ;
	local _o = [ NormSrcTargets $(>:S=$(SUFOBJ)) ] ;

	Depends $(_t) : $(_o) ;

	SHLINKOBJS on $(_t) += $(_o) ;
}

# Make the executables link with the given static libraries.
# ShLibraryLibraries shlib : libraries ;
rule ShLibraryLibraries
{
#Echo "ShLibraryLibraries got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<:S=$(SUFSHLIB)) ] ;
	local _l = [ NormSrcTargets $(>:S=$(SUFLIB)) ] ;

	Depends $(_t) : $(_l) ;

	SHLINKLIBS on $(_t) += $(_l) ;
}

# Make the executables link with the given shared libraries.
# ShLibraryShLibraries shlib : shlibraries ;
rule ShLibraryShLibraries
{
#Echo "ShLibraryShLibraries got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<:S=$(SUFSHLIB)) ] ;
	local _l = [ NormSrcTargets $(>:S=$(SUFSHIMPLIB)) ] ;

	Depends $(_t) : $(_l) ;

	SHLINKSHLIBS on $(_t) += $(_l) ;
}

# Add extra LINKFLAGS to mains
# MainLinkFlags mains : flags ;
rule MainLinkFlags
{
#Echo "MainLinkFlags got '" $(<) "' and '" $(>) "'" ;
	local _t = [ NormDstTargets $(<:S=$(SUFEXE)) ] ;
	local _i ;

	for _i in $(_t) {
		LINKFLAGS on $(_i) += $(>) ;
#Echo "exes '" $(_i) "' got LINKFLAGS '" [ geton $(_i) : LINKFLAGS ] "'" ;
	}
}

# Make an executable from sources
# Main image : sources : flags : defines : hdrpaths : objects : libs : shlibs ; 
rule Main
{
	MainFromObjects $(<) : $(>) $(6) : $(7) : $(8) ;
	Objects $(>) : $(3) : $(4) : $(5) ;
}

# Make a variant executable from sources
# Objects are distiguished by appending "_image" 
# MainVariant image : sources : flags : defines : hdrpaths : objects : libs : shlibs ; 
rule MainVariant
{
	local _i _t _o ;

#Echo "MainVariant got '" $(<) "' and '" $(>) "'" ;
	for _i in $(>) {
		_t = $(_i:DB)_$(<[1]) ;
		Object $(_t) : $(_i) : $(3) : $(4) : $(5) ;
#Echo "MainVariant object '" $(_t) "' and src '" $(_i) "'" ;
		_o += $(_t) ;
	}
#Echo "MainVariant image '" $(<) "' and objs '" $(_o) "'" ;
	MainFromObjects $(<) : $(_o) $(6) : $(7) : $(8) ;
}

# Make an executable from objects
# MainFromObjects image : objects : libs : shlibs ;
rule MainFromObjects
{
#Echo "MainFromObjects got" $(<) "and" $(>) ;

	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<[1]:S=$(SUFEXE)) ] ;
	local _s = [ NormSrcTargets $(>:S=$(SUFOBJ)) ] ;

#Echo "MainFromObjects _t" $(_t) "and _s" $(_s) ;

	# so 'jam foo' works when it's really foo.exe
	if $(_t:S=) != $(_t)
	{
		Depends $(_t:S=) : $(_t) ;
		NotFile $(_t:S=) ;
	}

	# make compiled sources a dependency of target

	Depends exe : $(_t) ;
	Depends $(_t) : $(_s) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;

	if $(3) {
		LinkLibraries $(<) : $(3) ;	
	}
	if $(4) {
		LinkShLibraries $(<) : $(4) ;	
	}

#Echo "MainFromObjects LINKFLAGS = '" $(LINKFLAGS) "' and P_LINKFLAGS ='" $(P_LINKFLAGS) "'" ;
#Echo "                PREF_LINKFLAGS = '" $(PREF_LINKFLAGS) "' and P_PREF_LINKFLAGS ='" $(P_PREF_LINKFLAGS) "'" ;
	if $(LINKFLAGS) || $(P_LINKFLAGS)
	 || $(PREF_LINKFLAGS) || $(P_PREF_LINKFLAGS) {
		local pref_linkflags = $(P_PREF_LINKFLAGS) ;
		pref_linkflags ?= $(PREF_LINKFLAGS) ;
		LINKFLAGS on $(_t) += $(P_LINKFLAGS) $(LINKFLAGS) $(pref_linkflags) ;
#Echo "LINKFLAGS on $(_t) = '" [ geton $(_t) : LINKFLAGS ] "'" ; 
	}

#Echo "MainFromObjects LINKOBJS = '" $(LINKOBJS) "' and P_LINKOBJS ='" $(P_LINKOBJS) "'" ;
	if $(LINKOBJS) || $(P_LINKOBJS) {
		local _o = [ NormSrcTargets $(LINKOBJS:S=$(SUFOBJ)) ] $(P_LINKOBJS:S=$(SUFOBJ)) ;
		Depends $(_t) : $(_o) ;
		LINKOBJS on $(_t) += $(_o) ;
	}

#Echo "MainFromObjects LINKLIBS = '" $(LINKLIBS) "' and P_LINKLIBS ='" $(P_LINKLIBS) "'" ;
	if $(LINKLIBS) || $(P_LINKLIBS) {
		local _l = [ NormSrcTargets $(LINKLIBS:S=$(SUFLIB)) ] $(P_LINKLIBS:S=$(SUFLIB)) ;
		Depends $(_t) : $(_l) ;
		LINKLIBS on $(_t) += $(_l) ;
	}

#Echo "MainFromObjects LINKSHLIBS = '" $(LINKSHLIBS) "' and P_LINKSHLIBS ='" $(P_LINKSHLIBS) "'" ;
	if $(LINKSHLIBS) || $(P_LINKSHLIBS) {
		local _l = [ NormSrcTargets $(LINKSHLIBS:S=$(SUFIMPLIB)) ] $(P_LINKSHLIBS:S=$(SUFIMPLIB)) ;
		Depends $(_t) : $(_l) ;
		LINKSHLIBS on $(_t) += $(_l) ;
	}

	Link_ $(_t) : $(_s) ;

	# Some OS's need to post process GUI apps to work (ie. OS X bundle)
	if [ geton $(_t) : GUIAPP ] = "true" {
		GUIAPP $(_t) ;
	}
#Echo "MainFromObjects done" ;
}

# A rule to make several mains from each of their single source files.
# MainsFromSources executables ;
rule MainsFromSources
{
	local _i ;
	for _i in $(<) {
		Main $(_i) : $(_i) ;
	}
}

# Make the executables link with the given objects.
# This is just a way of adding common object files to many mains.
# LinkObjects image : objects ;
rule LinkObjects
{
#Echo "LinkObjects got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<:S=$(SUFEXE)) ] ;
	local _o = [ NormSrcTargets $(>:S=$(SUFOBJ)) ] ;

	Depends $(_t) : $(_o) ;

	LINKOBJS on $(_t) += $(_o) ;
}

# Make the executables link with the given static libraries.
# LinkLibraries image : libraries ;
rule LinkLibraries
{
#Echo "LinkLibraries got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<:S=$(SUFEXE)) ] ;
	local _l = [ NormSrcTargets $(>:S=$(SUFLIB)) ] ;

	Depends $(_t) : $(_l) ;

	LINKLIBS on $(_t) += $(_l) ;
}

# Make the executables link with the given shared libraries.
# LinkShLibraries image : shlibraries ;
rule LinkShLibraries
{
#Echo "LinkShLibraries got '" $(<) "' and '" $(>) "'" ;
	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<:S=$(SUFEXE)) ] ;
	local _l = [ NormSrcTargets $(>:S=$(SUFSHIMPLIB)) ] ;

	Depends $(_t) : $(_l) ;

	LINKSHLIBS on $(_t) += $(_l) ;
}

# Ensure that each targets directories are created
# Makelocate targets ;
rule MakeLocate
{
#Echo "MakeLocate got '" $(<) "'" ;
	local _i ;
	# Uses special variable LOCATE of targets, and arranges
	# with MkDir to create target directory.
	# The directory itself becomes a target

	for _i in $(<) {
		local _t = [ geton $(_i) : LOCATE ] ;
		if $(_t) {
			MkDir_ $(_t) : $(_i) ;
		}
	}
}

# Make the directories and all their parent directories.
# MkDir directories ;
rule MkDir
{
#Echo "MkDir got '" $(<) "'" ;
	# Ignore timestamps on directories: we only care if they exist.
	local _t= [ NormPaths $(<) ] ;
	local _i ;

	for _i in $(_t) {
		MkDir_ $(_i) ;
	}
}

# Internal MkDir
# MkDir dir [ : dependency ] 
rule MkDir_
{
#Echo "MkDir_ got '" $(<) "' : '" $(>) "'" ;

	if ! $(<:BS) {
		return ;
	}

	local _t ;
	local _d = $(<:D) ;			# Form target id from path + last directory
	if ! $(_d) {
		_d = $(DOT) ;
	}
	local _t = [ NormIDstTargets $(<:BS) : $(_d) ] ;

#Echo "MkDir_ target = '" $(_t) "' dependant = '" $(>) "'" ;

	if $(>) {		# Thing that depends on this directory 
		Depends $(>) : $(_t) ;
	}
	NoUpdate $(_t) ;

	# Don't create . or any directory already created.

	if $(_t) != $(DOT) && ! $($(_t)-mkdir) 
	{
		# Cheesy gate to prevent multiple invocations on same dir
		# Arrange for jam dirs
		# MkDir1 has the actions 

#Echo "Making '" $(_t) "'" ;
		$(_t)-mkdir = true ;
		Depends dirs : $(_t) ;
		MkDir1 $(_t) ;

		# Recursively make parent directories.
		# $(_t:P) = $(_t)'s parent, & we recurse until root

		local _s = $(<:P) ;
#Echo "parent = '" $(_s) "'" ;

		# Don't try to create A: or A:\ on windows

		if $(NT)
		{
			switch $(_s)
			{
				case *:   : _s = ;
				case *:\\ : _s = ;
				case *:/  : _s = ;
			}
		}

#Echo "parent now = '" $(_s) "'" ;
		if $(_s) = $(SLASH)		# Hmm. Was $(_s) = $(<). How could that work ?
		{
#Echo "At root, ignore '" $(_s) "' = '" $(<) "'" ;
			# The parent is the same as the dir.
			# We're at the root, which some OS's can't stat, so we mark
			# it as NotFile.

			NotFile $(_s) ;
		}
		else if $(_s)  
		{
			# There's a parent; recurse.

#Echo "Doing Depends '" $(_t) "' with '" [ _TargetIDs $(_s) ] "'" ;
			Depends $(_t) : [ _TargetIDs $(_s) ] ;
#Echo "Recursing with parent '" $(_s) "'" ;
			MkDir_ $(_s) ;
		}
	} else {
#Echo "Not making '" $(_t) "' because it's dot, or it's been made before" ;
	}
}

# Deal with a single source to object.
# Object object : sources : flags : defines : hdrpaths 
rule Object
{
	#Echo "Object got " $(<) "and" $(>) "' flags '" $(3) "' defs '" $(4) "' hds '" $(5) "'" ;

	# Normalize target names and set Grist LOCATE and SOURCE
	local _t = [ NormDstTargets $(<[1]:S=$(SUFOBJ)) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;
	local _dot ;

#Echo "Object norms " $(_t) "and" $(_s) ;

	Depends $(_t) : $(_s) ;
	Depends obj : $(_t) ;
	Clean clean : $(_t) ;
	MakeLocate $(_t) ;

	#  HDRS is used to provide the -I$(HDRS) options on compile.

#Echo "Object sets HDRS on '" $(_t) "' to HDRS '" $(HDRS) "' and P_HDRS '" $(P_HDRS) "'" ;
	HDRS on $(_t) = [ geton $(_t) : SEARCH ] [ NormPaths $(HDRS) ] $(P_HDRS) ;
#Echo "HDRS on '" $(_t) "' is now '" [ geton $(_t) : HDRS ] "'" ;

	# we need to mark what the associated source is so
	# that if we want to change HDRS we can propogate
	# it to the  #include files.

	SOURCE on $(_t) = $(_s) ;		# ~~99 should check source is the same as any previous ?

	# handle #includes for source: Jam scans for headers with
	# the regexp pattern $(HDRSCAN) and then invokes $(HDRRULE)
	# with the scanned file as the target and the found headers
	# as the sources.  HDRSEARCH is the value of SEARCH used for
	# the found header files. 

	HDRRULE on $(_s) = HdrRule ;
	HDRSCAN on $(_s) = $(HDRPATTERN) ;

	# Construct HDRSEARCH so that we can latter add to HDRS
	local _dot = [ geton $(_s) : NOMLOC ] ;
	if ! $(_dot) { _dot = $(DOT) ; }
	HDRSEARCH1 on $(_s) = $(_dot) ;
	HDRSEARCH2 on $(_s) = [ NormPaths $(HDRS) ] $(P_HDRS) ;
	HDRSEARCH3 on $(_s) = [ NormPaths $(STDHDRS) ] ;
	HDRSEARCH on $(_s) = [ geton $(_s) : HDRSEARCH1 ] [ geton $(_s) : HDRSEARCH2 ]
	                     [ geton $(_s) : HDRSEARCH3 ] ;
#Echo "Object: HDRSEARCH on '" $(_s) "' set to '" [ geton $(_s) : HDRSEARCH ] "'" ;

	# propagate target specific-defines

	DEFINES on $(_t) = $(P_DEFINES) $(DEFINES) ;

	# if source is not .c, generate .c with specific rule

	switch $(_s:S)
	{
		case .asm : As_ $(_t) : $(_s) ;

		case .c :	Cc_ $(_t) : $(_s) ;

		case .C :	C++_ $(_t) : $(_s) ;
		case .cc :	C++_ $(_t) : $(_s) ;
		case .cpp : C++_ $(_t) : $(_s) ;
		case .cxx : C++_ $(_t) : $(_s) ;

		case .m :	Cc_ $(_t) : $(_s) ;

		case .f :	Fortran_ $(_t) : $(_s) ;

		case .l :	{
						local _c = $(_t:S=.c) ;
						CopyTarget $(_c) : $(_t) ;	# Transfer LOCATE, SEARCH, NOMLOC
						Lex_ $(_c) : $(_s) ;
						Cc_ $(_t) : $(_c) ;
					}

		case .s :	As_ $(_t) : $(_s) ;

		case .y :	{
						local _c = $(_t:S=$(YACCGEN)) ;
						CopyTarget $(_c) : $(_t) ;	# Transfer LOCATE, SEARCH, NOMLOC
						Yacc_ $(_c) : $(_s) ;
						Cc_ $(_t) : $(_c) ;
					}
		# Note user object gets normalized target and source
		case * :	UserObject $(_t) : $(_s) : $(3) : $(4) : $(5) ;
	}
#Echo ;

	if $(3) {
		ObjectCcFlags $(<) : $(3) ;
		switch $(_s:S)
		{
			case .c :	ObjectCcFlags $(_t) : $(3) ;

			case .C :	ObjectC++Flags $(_t) : $(3) ;
			case .cc :	ObjectC++Flags $(_t) : $(3) ;
			case .cpp : ObjectC++Flags $(_t) : $(3) ;
			case .cxx : ObjectC++Flags $(_t) : $(3) ;

			case .l :	ObjectCcFlags $(_t) : $(3) ;
			case .y :	ObjectCcFlags $(_t) : $(3) ;
		}
	}
	if $(4) {
		ObjectDefines $(<) : $(4) ;
	}
	if $(5) {
		ObjectHdrs $(<) : $(5) ;
	}
}

# Add extra CCFLAGS to objects
# ObjectCcFlags objects : flags ;
rule ObjectCcFlags
{
#Echo "ObjectCcFLags got '" $(<) "' and '" $(>) "'" ;
	local _t = [ NormDstTargets $(<:S=$(SUFOBJ)) ] ;
	local _i ;

	for _i in $(_t) {
		CCFLAGS1 on $(_i) += $(>) ;
		CCFLAGS on $(_i) = [ geton $(_i) : CCFLAGS1 ] [ geton $(_i) : CCFLAGS2 ] ;
#Echo "object '" $(_i) "' got CCFLAGS1 '" [ geton $(_i) : CCFLAGS1 ] "' and CCFLAGS2 '" [ geton $(_i) : CCFLAGS2 ] "' for total CCFLAGS '" [ geton $(_i) : CCFLAGS ] "'" ;
	}
}

# Add extra PREF_CCFLAGS to objects
# ObjectPrefCcFlags objects : flags ;
rule ObjectPrefCcFlags
{
#Echo "ObjectPrefCcFLags got '" $(<) "' and '" $(>) "'" ;
	if ! $(P_PREF_CCFLAGS) {
		local _t = [ NormDstTargets $(<:S=$(SUFOBJ)) ] ;
		local _i ;

		for _i in $(_t) {
			CCFLAGS2 on $(_i) += $(>) ;
			CCFLAGS on $(_i) = [ geton $(_i) : CCFLAGS1 ] [ geton $(_i) : CCFLAGS2 ] ;
#Echo "object '" $(_i) "' got CCFLAGS1 '" [ geton $(_i) : CCFLAGS1 ] "' and CCFLAGS2 '" [ geton $(_i) : CCFLAGS2 ] "' for total CCFLAGS '" [ geton $(_i) : CCFLAGS ] "'" ;
		}
	}
}

# Add extra C++FLAGS to objects
# ObjectC++Flags objects : flags ;
rule ObjectC++Flags
{
#Echo "ObjectC++FLags got '" $(<) "' and '" $(>) "'" ;
	local _t = [ NormDstTargets $(<:S=$(SUFOBJ)) ] ;
	local _i ;

	for _i in $(_t) {
		C++FLAGS1 on $(_i) += $(>) ;
		C++FLAGS on $(_i) = [ geton $(_i) : C++FLAGS1 ] [ geton $(_i) : C++FLAGS2 ] ;
	}
}

# Add extra PREF_C++FLAGS to objects
# ObjectPrefC++Flags objects : flags ;
rule ObjectPrefC++Flags
{
#Echo "ObjectPrefC++FLags got '" $(<) "' and '" $(>) "'" ;
	if ! $(P_PREF_C++FLAGS) {
		local _t = [ NormDstTargets $(<:S=$(SUFOBJ)) ] ;
		local _i ;

		for _i in $(_t) {
			C++FLAGS2 on $(_i) += $(>) ;
			C++FLAGS on $(_i) = [ geton $(_i) : C++FLAGS1 ] [ geton $(_i) : C++FLAGS2 ] ;
		}
	}
}

# Add extra DEFINES to objects
# ObjectDefines objects : defines ;
rule ObjectDefines
{
	# must reformat CCDEFS according to current defines

	local s = [ NormDstTargets $(<:S=$(SUFOBJ)) ] ;

	DEFINES on $(s) += $(>) ;
	CCDEFS on $(s) = [ on $(s) FDefines $(DEFINES) ] ;
}

# Add extra header search paths to objects.
# ObjectHdrs objects : dirs ;
rule ObjectHdrs
{
#Echo "ObjectHdrs HDRS got '" $(<) "' and '" $(>) "'" ;
	# Add to HDRS for CCHDRS benefit.
	local _t = [ NormDstTargets $(<:S=$(SUFOBJ)) ] ;
	local _h = [ NormSrcPaths $(>) ] ;
	local _i _s ;

#Echo "ObjectHdrs changed  HDRS on '" $(_t) "' from '" [ geton $(_t) : HDRS ] "'" ;
	HDRS on $(_t) += $(_h) ;
#Echo " to '" [ geton $(_t) : HDRS ] "'" ;
	for _i in $(_t) {
		_s = [ geton $(_i) : SOURCE ] ;
#Echo " obj '" $(_i) "' has source '" $(_s) "'" ;
#Echo " ObjectHdrs changed HDRSEARCH on '" $(_s) "' from '" [ geton $(_s) : HDRSEARCH ] "'" ;
		HDRSEARCH2 on $(_s) += $(_h) ;
		HDRSEARCH on $(_s) = [ geton $(_s) : HDRSEARCH1 ] [ geton $(_s) : HDRSEARCH2 ]
		                     [ geton $(_s) : HDRSEARCH3 ] ;
#Echo "  to '" [ geton $(_s) : HDRSEARCH ] "'" ;
		CCHDRS on $(_i) = [ on $(_i) FIncludes $(HDRS) ] ;
	}
}

# Set KEEPOBJS on the given headers
# ObjectKeep objects ;
rule ObjectKeep
{
#Echo "ObjectKeep got '" $(<) "" ;
	local _t = [ NormDstTargets $(<:S=$(SUFOBJ)) ] ;

	KEEPOBJS on $(_t) = "true" ;
#Echo "ObjectHdrs changed  KEEPOBJS on '" $(_t) "' to '" [ geton $(_t[1]) : KEEPOBJS ] "'" ;
}

# Create object files from sources.
# Objects sources : flags : defines : hdrpaths ; 
rule Objects
{
#Echo "Objects got src '" $(<) "' flags '" $(2) "' def '" $(3) "' hdrs '" $(4) "'" ;
	local _i ;

	for _i in $(<) {
		Object $(_i) : $(_i) : $(2) : $(3) : $(4) ;
	}
}

# Marks sources as temporary with the TEMPORARY rule, and deletes sources once targets  are built.
# Must be the last rule invoked on targets. 
# RmTemps targets : sources ;
rule RmTemps
{
	local _s = [ NormPaths $(>) ] ;
	if $(_s) {
		RmTemps_ $(<) : $(_s) ;
	}
}

# internal RmTemps
rule RmTemps_
{
	Temporary $(>) ;
}

# Setuid
rule Setuid
{
	local _t = [ NormPaths $(>:S=$(SUFEXE)) ] ;
	MODE on $(_t) = 4755 ;
}

# Shell
rule Shell
{
	local _t = [ NormTargs $(>:S=$(SUFSH)) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;
	Shell_ $(_t) : $(_s) ;
}

# internal Shell
rule Shell_
{
	Depends shell : $(<) ;
	Depends $(<) : $(>) ;
	MODE on $(<) = $(SHELLMODE) ;
	Clean clean : $(<) ;
	Chmod_ $(<) ;
}

# SoftLink
rule SoftLink
{
	local _t = [ NormDstTargets $(<) ] ;
	local _s = [ NormSrcTargets $(>) ] ;

	SoftLink_ $(_t) : $(_s) ;
}

# internal SoftLink
rule SoftLink_
{
	Depends files : $(<) ;
	Depends $(<) : $(>) ;
	Clean clean : $(<) ;
}

#Adds flags to mark symbols as undefined on link command for images
rule Undefines
{
	local _t = [ NormDstTargets $(<) ] ;
	UNDEFS on [ $(_t:S=$(SUFEXE)) ] += $(UNDEFFLAG)$(>) ;
}

# User routine to handle objects. Note that
# targets and sources are in normalized form.
rule UserObject
{
	Exit "Unknown suffix on" $(>) "- see UserObject rule in Jamfile(5)." ;
}

# Yacc source.c : source.y ;
rule Yacc
{
	local _t = [ NormDstTargets $(<[1]) ] ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Yacc_ $(_t) : $(_s) ;
}

# internal Yacc
rule Yacc_
{
	local _h ;

	_h = $(<:S=.h) ;
	CopyTarget $(_h) : $(<) ;	# Transfer LOCATE, SEARCH, NOMLOC

	# Some places don't have a yacc.

	MakeLocate $(<) $(_h) ;

	if $(YACC)
	{
		Depends $(<) : $(>) ;
		FakeFile_ $(_h) : $(<) ;		# .h is created with .c
		Yacc1_ $(<) $(_h) : $(>) ;
		YaccMv_ $(<) $(_h) ;
		Clean clean : $(<) $(_h) ;
	}

	# make sure someone includes $(_h) else it will be
	# a deadly independent target

	Includes $(<) : $(_h) ;
}

# Aswig : source.i ;
# Argyll C class generator. Creates C class declaration source.h,
# C class partial implementation source_i.c, C++ class wrapper
# declaration & implementation source.hpp.
rule Aswig
{
#Echo "Aswig called with $(>) " ;
	local _s = [ NormSrcTargets $(>[1]) ] ;

	Aswig_ : $(_s) ;
}

# internal Aswig
rule Aswig_
{
#Echo "Aswig_ called with $(>)" ;
	local _i = $(>[1]) ;
	local _h = $(_i:S=.h) ;
	CopyTarget $(_h) : $(_i) ;		# Transfer LOCATE, SEARCH, NOMLOC
	local _c = $(_i:B=$(_i:B)_i:S=.c) ;
	CopyTarget $(_c) : $(_i) ;		# Transfer LOCATE, SEARCH, NOMLOC
	local _hpp = $(_i:S=.hpp) ;
	CopyTarget $(_hpp) : $(_i) ;	# Transfer LOCATE, SEARCH, NOMLOC

#Echo "Aswig_ creates $(_h) $(_c) $(_hpp) from $(_i) " ;

	MakeLocate $(_h) $(_c) $(_hpp) ;

	Depends $(_h) : $(_i) ;
	FakeFile_ $(_c) : $(_h) ;		# _i.c is created with .h
	FakeFile_ $(_hpp) : $(_h) ;		# _.hpp is created with .h
	Aswig1_ $(_h) : $(_i) ;
	Clean clean : $(_h) $(_c) $(_hpp) ;
}

#
# Utility rules; no side effects on these
#

# FReverse a1 a2 a3 ... ;
# return ... a3 a2 a1 ;
rule FReverse 
{

	local _i _o = ;
	for _i in $(1)
	{
		_o = $(_i) $(_o) ;
	}
	return $(_o) ;
}

# Strip common initial elements of variables v1 and v2.
# Modifies the variable values themselves.
# FStripCommon v1 : v2 ;
rule FStripCommon
{

	if $($(<)[1]) && $($(<)[1]) = $($(>)[1])
	{
		$(<) = $($(<)[2-]) ;
		$(>) = $($(>)[2-]) ;
		FStripCommon $(<) : $(>) ;
	}
}

# Append suffix if there is not already one
# E.g., "FAppendSuffix yacc lex foo.bat : $(SUFEXE) ;"
# returns (yacc,lex,foo.bat) on Unix and 
# (yacc.exe,lex.exe,foo.bat) on NT.
# FAppendSuffix files : suffix ;
rule FAppendSuffix
{

	if $(>)
	{
		local _i _o ;

		for _i in $(<)
		{
			if $(_i:S)
			{
				_o += $(_i) ;
			}
			else
			{
				_o += $(_i:S=$(>)) ;
			}
		}
		return $(_o) ;
	}
	else
	{
		return $(<) ;
	}
}

# return a1 a2 ... with any empty elements deleted
# FDelEmpty a1 a2 ... ;
rule FDelEmpty 
{

	local _i _o = ;
	for _i in $(<)
	{
		if $(_i) {
			_o += $(_i) ;
		}
	}
	return $(_o) ;
}

#
# Operating system specific utility rules
# First, the (generic) UNIX versions
#

rule FQuote { return \\\"$(<)\\\" ; }
rule FDefines { local _t = [ FDelEmpty $(<) ] ; return -D$(_t) ; }
rule FIncludes { local _t = [ FDelEmpty $(<) ] ; return -I$(_t) ; }

if $(OS2)
{
	rule FQuote { return \"$(<)\" ; }
	rule FIncludes { local _t = [ FDelEmpty $(<) ] ; return /I$(_t) ; }
}

else if $(NT)
{
	if ! $(MINGW) {
		rule FDefines { local _t = [ FDelEmpty $(<) ] ; return /D$(_t) ; }
		rule FIncludes { local _t = [ FDelEmpty $(<) ] ; return /I$(_t) ; }
	}
}

else if $(MAC)
{
	rule FQuote { return \"$(<)\" ; }
	rule FDefines { local _t = [ FDelEmpty $(<) ] ; return "-define '$(_t)'" ; }
	rule FIncludes { local _t = [ FDelEmpty $(<) ] ; return \"$(_t:J=,)\" ; }
}

else if $(VMS)
{
	rule FQuote { return \"\"\"$(<)\"\"\" ; }
	rule FDefines { local _t = [ FDelEmpty $(<) ] ; return "/define=( $(_t:J=,) )" ; }
	rule FIncludes { local _t = [ FDelEmpty $(<) ] ; return "/inc=( $(_t:J=,) )" ; }

	rule FDirName
	{
			local _s _i ;

			# Turn individual elements in $(<) into a usable path.

			if ! $(<)
			{
				_s = $(DOT) ;
			}
			else 
			{
				# This handles the following cases:
				#		 a -> [.a]
				#		 a b c -> [.a.b.c]
				#		 x: -> x:
				#		 x: a -> x:[a]
				#		 x:[a] b -> x:[a.b]

				switch $(<[1])
				{
					case *:* : _s = $(<[1]) ;
					case \\[*\\] : _s = $(<[1]) ;
					case * : _s = [.$(<[1])] ;
				}

				for _i in [.$(<[2-])]
				{
					_s = $(_i:R=$(_s)) ;
				}
			}

			return $(_s) ;
	}
}

#
# Actions
#

#
# First the defaults
#

actions updated together piecemeal Archive
{
	$(AR) $(<) $(>)
}

actions together ArchiveArchive
{
	mkdir .jamArchiveArchive$PPID
	cp $(>) .jamArchiveArchive$PPID 
	cd .jamArchiveArchive$PPID 
	for i in $(>:BS)
	do
    	ar -xo $i
	done
    cd ..
	ar -r $(<) .jamArchiveArchive$PPID/*.o
	rm -rf .jamArchiveArchive$PPID
}

actions As
{
	$(AS) $(ASFLAGS) $(ASHDRS) -o $(<) $(>)
}

actions C++_
{
	$(C++) -c -o $(<) $(C++FLAGS) $(CCDEFS) $(CCHDRS) $(>)
}

actions Cc_
{
	$(CC) -c -o $(<) $(CCFLAGS) $(CCDEFS) $(CCHDRS) $(>)
}

actions Chgrp_
{
	$(CHGRP) $(GROUP) $(<)
}

actions Chmod1
{
	$(CHMOD) $(MODE) $(<)
}

actions Chown_
{
	$(CHOWN) $(OWNER) $(<)
}

actions piecemeal together existing Clean
{
	$(RM) $(>)
}

actions File_
{
	$(CP) $(>) $(<)
}

#actions FakeFile_ { }

actions GenFile1
{
	$(>[1]) $(<) $(>[2-])
}

actions GenFileND1
{
	$(>)
}

actions GenFileNND1
{
	$(>)
}

actions CreateCatFile_ 
{
	$(CP) /Y nul $(<) > nul
}

actions CatToFile_
{
	echo $(>) >> $(<)
}

actions Fortran_
{
	$(FORTRAN) $(FORTRANFLAGS) -o $(<) $(>)
}

actions HardLink_
{
	$(RM) $(<) && $(LN) $(>) $(<)
}

actions Install
{
	$(CP) $(>) $(<) 
}

actions Lex_
{
	$(LEX) $(>)
}

actions LexMv_
{
	$(MV) lex.yy.c $(<)
}

#	Old: $(LINK) $(LINKFLAGS) $(LINKOUTFLAG)$(<) $(UNDEFS) $(>) $(LINKOBJS) $(LINKLIBS) $(LINKSHLIBS) $(STDLIBS) 
#	$(LINK) $(LINKOUTFLAG)$(<) $(UNDEFS) $(>) $(LINKFLAGS) $(LINKOBJS) $(LINKLIBS) $(LINKSHLIBS) $(STDLIBS) 
actions Link_ bind LINKOBJS LINKLIBS LINKSHLIBS
{
	$(LINK) $(LINKOUTFLAG)$(<) $(UNDEFS) $(>) $(LINKOBJS) $(LINKLIBS) $(LINKSHLIBS) $(LINKFLAGS) $(STDLIBS)  
}

if $(OS) = MACOSX {		# OS X version of ld

	# Link .o and .a into a .dylib
	# gcc -dynamiclib -Wl,-headerpad_max_install_names,-undefined,dynamic_lookup,-compatibility_version,1.0,-current_version,1.0,-install_name,/usr/local/lib/libfoo.1.dylib -o libfoo.1.dylib $(OBJ)
	# -Wl,-install_name,@executable_path ???
	actions ShLink_ bind SHLINKOBJS SHLINKLIBS SHLINKSHLIBS  
	{
		$(LINK) -dynamiclib -Wl,-undefined,dynamic_lookup,-install_name,$(SHLINKSEARCHEXEPATH)$(<[1]:BS) $(LINKOUTFLAG)$(<[1]) $(>) $(SHLINKOBJS) $(SHLINKLIBS) $(SHLINKSHLIBS) $(SHLINKFLAGS) $(SHSTDLIBS)
	}

} else {	# General gcc

	# Link .o and .a into a .so
	# To set .so search path: -Wl,-rpath,$(LINKSHLIBS:D) 
	# or set LD_LIBRARY_PATH
	# or set /etc/ld.so.conf.d/*.conf
	# To set .so search path (after flag):  -Wl,-soname=$(<[1]:BS)
# Old:	$(LINK) -shared -Wl,-soname=$(SHLINKSEARCHEXEPATH)$(<[1]:BS) $(SHLINKFLAGS) $(LINKOUTFLAG)$(<[1]) $(>) $(SHLINKOBJS) $(SHLINKLIBS) $(SHLINKSHLIBS) $(SHSTDLIBS)
	actions ShLink_ bind SHLINKOBJS SHLINKLIBS SHLINKSHLIBS  
	{
		$(LINK) -shared -Wl,-soname=$(SHLINKSEARCHEXEPATH)$(<[1]:BS) $(LINKOUTFLAG)$(<[1]) $(>) $(SHLINKOBJS) $(SHLINKLIBS) $(SHLINKSHLIBS) $(SHLINKFLAGS) $(SHSTDLIBS)
	}
}

actions MkDir1
{
	$(MKDIR) $(<)
}

actions together Ranlib
{
	$(RANLIB) $(<)
}

actions quietly updated piecemeal together RmTemps_
{
	$(RM) $(>)
}

actions Shell_
{
	$(AWK) '
		NR == 1 { print "$(SHELLHEADER)" }
		NR == 1 && /^[#:]/ { next }
		/^##/ { next }
		{ print }
	' < $(>) > $(<)
}

actions SoftLink_
{
	$(RM) $(<) && $(LN) -s $(>) $(<)
}

actions Yacc1_
{
	$(YACC) $(YACCFLAGS) $(>)
}

actions YaccMv_ 
{
	$(MV) $(YACCFILES).c $(<[1])
	$(MV) $(YACCFILES).h $(<[2])
}

actions Aswig1_
{
	aswig $(ASWIGFLAGS) -c++ -a2c $(>)
}

#
# RELOCATE - for compilers with broken -o flags
#

if $(RELOCATE)
{
	actions C++_
	{
		$(C++) -c $(C++FLAGS) $(CCDEFS) $(CCHDRS) $(>)
	}

	actions Cc_
	{
		$(CC) -c $(CCFLAGS) $(CCDEFS) $(CCHDRS) $(>)
	}

	actions ignore CcMv
	{
		[ $(<) != $(>:BS=$(SUFOBJ)) ] && $(MV) $(>:BS=$(SUFOBJ)) $(<)
	}
}

#
# NOARUPDATE - can't update an archive
#

if $(NOARUPDATE)
{
	actions Archive
	{
		$(AR) $(<) $(>)
	}
}

#
# UNIX specific actions
#

if $(UNIX)
{
	actions GenFile1
	{
		PATH="$PATH:."
		$(>[1]) $(<) $(>[2-])
	}

	actions CreateCatFile_ 
	{
		$(CP) /dev/null $(<) 
	}

	actions CatToFile_
	{
		echo "$(>)" >> $(<)
	}

	# Make OS X GUI apps work
	if $(OS) = MACOSX
	{

		# Used to use /Developer/Tools/Rez -t APPL Carbon.r -o $(<)
		# but this no longer works in OS X 10.5, and we don't need this
		# stuff with TransformProcessType()
		# Another alternative is to use link option "-sectcreate __TEXT __info_plist Info.plist" ???
		# to embed the plist in the executable, but not sure what should be in plist.
		# Pure GUI app
		actions GUIAPP
		{
			rm -rf $(<).app
			mkdir -p $(<).app
			mkdir $(<).app/Contents
			mkdir $(<).app/Contents/Resources
			mkdir $(<).app/Contents/MacOS
			echo APPLnone > $(<).app/Contents/PkgInfo
			mv $(<) $(<).app/Contents/MacOS
			chmod 755 $(<).app/Contents/MacOS/$(<:BS)
			cat << EOF > $(<).app/Contents/info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
<plist version="0.9">
<dict>
        <key>CFBundleName</key>
        <string>$(<:BS)</string>
        <key>CFBundlePackageType</key>
        <string>APPL</string>
        <key>CFBundleVersion</key>
        <string>59</string>
        <key>CFBundleShortVersionString</key>
        <string>1.1</string>
        <key>CFBundleSignature</key>
        <string>none</string>
</dict>
</plist>
EOF
			cat << EOF > $(<)
#!/bin/sh
\$0.app/Contents/MacOS/$(<:BS)
EOF
			chmod 755 $(<)
		}
	}
}

#
# NT specific actions
#

if $(NT) 
{
	# Ensure timestamp is updated

	actions File_
	{
		$(CP) /b $(>) + nul $(<) > nul
	}

	actions Install
	{
		$(CP) /b $(>) + nul $(<) > nul
	}
}

if $(NT) && $(MSVCNT)
{
#	actions updated together piecemeal Archive
#	{
#		if exist $(<) set _$(<:B)_=$(<)
#		$(AR) /out:$(<) %_$(<:B)_% $(>)
#	}

	# This is slightly dodgy if you've got multiple
	# libraries with the same name in different directories with
	# jam -j n, or you have .obj's distinguished only by their directory
	# being combined into the same library, but it overcomes
	# the problem of lib not updating a library properly if
	# jam is involked from different directories.
	actions updated together piecemeal Archive
	{
		if exist $(<:BS)_ RMDIR /S/Q $(<:BS)_
		MKDIR $(<:BS)_
		for %%i in ( $(>) ) do COPY %%i $(<:BS)_ 1>nul
		if exist $(<) set _$(<:B)_=$(<)
		$(AR) /out:$(<) %_$(<:B)_% $(<:BS)_\*
		DEL /F/S/Q $(<:BS)_\* 1>nul
		RMDIR /Q $(<:BS)_
	}

	actions together ArchiveArchive
	{
		$(AR) /out:$(<) $(>)
	}

	actions As
	{
		$(AS) /Ml /p /v /w2 $(>) $(<) ,nul,nul;
	}

	actions Cc_
	{
		$(CC) /c /Fo$(<) $(CCFLAGS) $(CCDEFS) $(CCHDRS) /I$(STDHDRS) $(>)
	}

	actions C++_
	{
		$(C++) /c /Fo$(<) $(C++FLAGS) $(CCDEFS) $(CCHDRS) /I$(STDHDRS) /Tp $(>)
	}

	actions Link_ bind LINKOBJS LINKLIBS LINKSHLIBS
	{
		$(LINK) $(LINKFLAGS) $(P_LINKFLAGS) /out:$(<) $(UNDEFS) $(>) $(LINKOBJS) $(LINKLIBS) $(LINKSHLIBS) $(STDLIBS)
	}

	# Create DLL using export attribute
	actions ShLink_  bind SHLINKOBJS SHLINKLIBS SHLINKSHLIBS 
	{
		$(LINK) /DLL $(SHLINKFLAGS) /out:$(<[1]) $(>) $(SHLINKOBJS) $(SHLINKLIBS) $(SHLINKSHLIBS) $(SHSTDLIBS)
	}

	# Create DLL using .def file
	actions ShLinkDef_ bind SHLINKDEFFILE SHLINKOBJS SHLINKLIBS SHLINKSHLIBS 
	{
		$(LINK) /DLL /DEF:$(SHLINKDEFFILE) $(SHLINKFLAGS) /out:$(<[1]) $(>) $(SHLINKOBJS) $(SHLINKLIBS) $(SHLINKSHLIBS) $(SHSTDLIBS)
	}
}
else if $(NT) && $(MSVC)
{
	actions updated together piecemeal Archive
	{
		$(AR) $(<) -+$(>)
	}

	actions Cc_
	{
		$(CC) /c /Fo$(<) $(CCFLAGS) $(CCDEFS) $(CCHDRS) $(>)
	}

	actions C++_
	{
		$(C++) /c /Fo$(<) $(C++FLAGS) $(CCDEFS) $(CCHDRS) /Tp $(>)
	}

	actions Link_ bind LINKOBJS LINKLIBS LINKSHLIBS
	{
		$(LINK) $(LINKFLAGS) $(P_LINKFLAGS) /out:$(<) $(UNDEFS) $(>) $(LINKOBJS) $(LINKLIBS) $(LINKSHLIBS) $(STDLIBS)
	}
}
else if $(NT) && $(BCCROOT)
{
	actions updated together piecemeal Archive
	{
		$(AR) $(<) -+$(>)
	}

	actions Link_ bind LINKOBJS LINKLIBS LINKSHLIBS
	{
		$(LINK) -e$(<) $(LINKFLAGS) $(P_LINKFLAGS) $(UNDEFS) -L$(STDLIBS) $(LINKLIBS) $(LINKSHLIBS) $(>) $(LINKOBJS)
	}

	actions C++_
	{
		$(C++) -c -o$(<) $(C++FLAGS) $(CCDEFS) $(CCHDRS) $(>)
	}

	actions Cc_
	{
		$(CC) -c -o$(<) $(CCFLAGS) $(CCDEFS) $(CCHDRS) $(>)
	}
}

else if $(NT) && $(MINGW) {

	# Create DLL using export attribute
	actions ShLink_  bind SHLINKOBJS SHLINKLIBS SHLINKSHLIBS
	{
		$(LINK) -shared $(SHLINKFLAGS) $(LINKOUTFLAG)$(<[1]) -Wl,--out-implib,$(<[2]) $(>) $(SHLINKOBJS) $(SHLINKLIBS) $(SHLINKSHLIBS) $(SHSTDLIBS)
	}
	# Create DLL using .def file
	actions ShLinkDef_ bind SHLINKOBJS SHLINKLIBS SHLINKSHLIBS SHLINKDEFFILE
	{
		$(LINK) -shared $(SHLINKFLAGS) $(LINKOUTFLAG)$(<[1]) -Wl,--out-implib,$(<[2]) $(>) $(SHLINKOBJS) $(SHLINKLIBS) $(SHLINKSHLIBS) $(SHSTDLIBS) $(SHLINKDEFFILE)
	}
}

#
# OS2 specific actions
#

else if $(OS2) && $(WATCOM)
{
	actions together piecemeal Archive
	{
		$(AR) $(<) +-$(>) 
	}

	actions Cc_
	{
		$(CC) /Fo=$(<) $(CCFLAGS) $(CCDEFS) $(CCHDRS) $(>)
	}

	actions C++_
	{
		$(C++) /Fo=$(<) $(C++FLAGS) $(CCDEFS) $(CCHDRS) $(>)
	}

	actions Link_ bind LINKOBJS LINKLIBS LINKSHLIBS 
	{
		$(LINK) $(LINKFLAGS) $(P_LINKFLAGS) /Fe=$(<) $(UNDEFS) $(>) $(LINKOBJS) $(LINKLIBS) $(LINKSHLIBS) $(STDLIBS)
	}

	actions Shell_
	{
		$(CP) $(>) $(<)
	}
}

#
# VMS specific actions
#

else if $(VMS)
{
	actions updated together piecemeal Archive 
	{
		lib/replace $(<) $(>[1]) ,$(>[2-])
	}

	actions Cc_
	{ 
		$(CC)/obj=$(<) $(CCFLAGS) $(CCDEFS) $(CCHDRS) $(>) 
	}

	actions C++_
	{ 
		$(C++)/obj=$(<) $(C++FLAGS) $(CCDEFS) $(CCHDRS) $(>) 
	}

	actions piecemeal together existing Clean
	{
		$(RM) $(>[1]);* ,$(>[2-]);*
	}

	actions together quietly CreLib
	{
		if f$search("$(<)") .eqs. "" then lib/create $(<)
	}

	actions GenFile1
	{
		mcr $(>[1]) $(<) $(>[2-])
	}

	actions Link_ bind LINKOBJS LINKLIBS LINKSHLIBS
	{
		$(LINK)/exe=$(<) $(LINKFLAGS) $(P_LINKFLAGS) $(>:J=,) ,$(LINKOBJS:J=,) ,$(LINKLIBS)/lib ,$(LINKSHLIBS)/lib ,$(STDLIBS)
	}

	actions quietly updated piecemeal together RmTemps_
	{
		$(RM) $(>[1]);* ,$(>[2-]);*
	}

	actions Shell_
	{
		$(CP) $(>) $(<)
	}
}

#
# Mac specifc actions
#

else if $(MAC)
{
	actions together Archive 
	{
		$(LINK) -library -o $(<) $(>)
	}

	actions Cc_
	{
		set -e MWCincludes $(CCHDRS)
		$(CC) -o $(<) $(CCFLAGS) $(CCDEFS) $(>) 
	}

	actions C++_
	{
		set -e MWCincludes $(CCHDRS)
		$(CC) -o $(<) $(C++FLAGS) $(CCDEFS) $(>) 
	}

	actions Link_ bind LINKOBJS LINKLIBS LINKSHLIBS
	{
		$(LINK) -o $(<) $(LINKOBJS) $(LINKFLAGS) $(P_LINKFLAGS) $(>) $(LINKLIBS) $(LINKSHLIBS) "$(STDLIBS)"
	}
}

if $(WIN98)
{
	actions existing Clean
	{
		del $(>)
	}
}

# =========================================

# Now do Argyll init and read default Jamtop
DoInit ;

#
# Now include the user's Jamfile.
#

#PeerInclude $(DOT) ;
SubInclude $(DOT) ;