README
# BEGIN_ICS_COPYRIGHT8 ****************************************
# 
# Copyright (c) 2015-2017, Intel Corporation
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of Intel Corporation nor the names of its contributors
#       may be used to endorse or promote products derived from this software
#       without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# 
# END_ICS_COPYRIGHT8   ****************************************

# This directory contains makerules files.  These files control the compiler and
# linker flags and provide mechanisms for individual makefiles to augment the
# defaults as needed

## Global Make Settings File
## ----------------------
## All project makesettings files (or local makefiles not associated with a
## specific project) should include this file
## before the local definitions section.
## This file allows setting variables which can be used by Makefiles to make
## decisions on which targets or DIRS to build.  This allows such controls
## to be placed here as opposed to extending the build system environment
## variable tools like setenv, target, etc.
##
## Global Make Rules File
## ----------------------
## All project makerules files (or local makefiles not associated with a
## specific project) should include this file
## after the local definitions section and before the local rules section.  The
## function of the global makerules file is to define the system applications,
## standardized make targets (rules) and commonly used variables and structure.
## The makefile is coded so that it is platform independent.  Specifics to a
## given platform are taken care of in 'ifdef' type statements so that the
## makefile can be used on all platforms with little or no modification.  Any
## modifications to the source should be made with portability in mind and
## should follow the embedded notations.
##
## More information about the
## execution of the makefile can be had by specifying the -d option on the
## command line to make.
##
## NOTE: This makerules file (as well as the project makerules and the template
##       makefiles) depend on using the GNU version of make.  GNU make 
##		 (which is included in cygwin) must be
##       installed on your system prior to using this makefile.
#=============================================================================#
##
#=============================================================================#
## The following list is the standard list of definitions which will be defined
## or are used in other variable definitions or rules in this makerules file.
## Each global variable name is listed with a definition of the purpose and
## intended use.  Defaults for items are shown in brackets, and may be
## overridden by the user in a local makefile or project makerules file.  If
## no default is shown, the user can use the variable, but should not change
## the value.
##
## Make Control Variables:
##AUTODEP	= environment defined to enable/disable makedepend during
##			  make all phase of build (default is yes, set to no to
##			  disable makedepend)
##BUILD_CONFIG= Type of build to do: debug or release or loadable [debug]
##				Debug release includes CDEBUG/CCDEBUG flags and does not use
##				COPT/CCOPT.  Non-debug omits CDEBUG/CCDEBUG and uses COPT/CCOPT
##				loadable is only allowed for MIPS/VxWorks builds.  This does:
##					Libraries build to .rel files which have all objects in
##					Only SYSLIBS in included in link
##					Firmware/BSP is built with .rel files, BSP has all symbols
##					Hence Unit Tests can be built to a .out and downloaded
##					against a full firmware which was built as loadable as well
##					loadable builds define -DBUILD_LOADABLE so initialization
##					code for system libraries can be disabled in unit tests
##BUILD_PLATFORM= system build is running on (DOS, CYGWIN, LINUX, or DARWIN)
##				determined dynamically in this file if not pre-defined
##BUILD_TARGET= Target for build (MIPS, MIPS_BSP, IA32, IA64, X86_64, WIN32, CYGWIN, PPC)
##BUILD_UNIT_TEST= should build of UNIT_TEST directories be enabled (!="" or "")
##			when set to != "", the variable $(TEST) is defined as Test
##			when set to "" $(TEST) is set to ""
##			$(TEST) should be used in DIRS and DS_SUBPROJECTS to select
##			unit test directories
##MAKE		= System make application
##MAKEFILE	= Name of makefile [Makefile]
##BUILD_TARGET_OS= OS to build for (VXWORKS, LINUX, WIN32, CYGWIN, DARWIN)
##BUILD_TARGET_OS_VERSION= version of OS to build for (2.4.7-10, etc).
##BUILD_BRAND= branding for product, default is "SilverStorm Technologies Inc."
##REGISTER	= Enable Registration, set to "#" to disable registration of
##				Windows DLLs and applications built (Windows Only)
##VS		= Visible shell commands [""], set to "" to see more
## 			  set to "@" to see less
##
## Make Targets and Byproducts:
##PRODUCT	= actual product name, used in BSPs and other common code
##				as needed to create a product specific flavor
##				created as basename of TL_DIR
##DIRS		= list of subdirectories to build (for toplevel & middle makefiles)
##BSP_SPECIFIC_DIRS	= list of subdirectories to clobber when rebuilding
##				for a different BSP
##CFILES	= list of C source files to compile (.c suffix)
##CCFILES	= list of C++ source files to compile (.cpp suffix)
##LFILES	= list of lex source files to compiler (.lex suffix)
##LIBFILES	= list of library names to combine into archive/shlib built
##IDLFILE	= idl source file (.idl suffix) (Windows Only)
##IDL_TARGETS = files to build from IDLFILE during INCLUDES phase (Windows Only)
##IDL_HEADERS = .h files to build from IDLFILE during INCLUDES phase
##					 (Windows Only)
##IDL_OTHER = .c and .tlb  files to build from IDLFILE during INCLUDES phase
##					 (Windows Only)
##RSCFILES	= list of resource source files (.rc suffix) (Windows Only)
##SOURCES	= list of source files, used to drive dependency generation
##OBJECTS	= Intermediate object file names [Not Defined]
##ARLIBS	= Intermediate archive libraries to combine in archive and
##			shared library targets
##INCLUDE_TARGETS = include files to install (not clobbered)
##LIB_TARGETS_IMPLIB = import libraries built during libs phase
##LIB_TARGETS_ARLIB	= archive libraries built during libs phase
##LIB_TARGETS_EXP= .exp file built during libs phase (Windows Only)
##LIB_TARGETS_MISC= Miscellaneous targets built during libs phase
##LIB_TARGETS = complete set of targets built during libs phase
##CMD_TARGETS_SHLIB	= shared libraries built during cmds phase
##CMD_TARGETS_EXE	= executables built during cmds phase
##CMD_TARGETS_DRIVER= Device Drivers built during cmds phase
##					can also be a partial link of a device driver
##					(LINUX and DARWIN only)
##CMD_TARGETS_KEXT= Final IOKit packaged Kernel Extension built during cmds
##					phase and packaged using CMD_TARGETS_DRIVER (DARWIN only)
##CMD_TARGETS_MISC= Miscellaneous targets built during cmds phase
##CMD_TARGETS = complete set of targets built during cmds phase
##EXECUTABLE= executable to be run when testing/debugging [Not Defined]
##MISC_FILES= Miscellaneous files not-build (nor clobbered)
##CLEAN_TARGETS_MISC= Miscellaneous backup and junk files created during a
##				 build [Empty], removed during clean
##CLEAN_TARGETS	= Intermediate build process file names to remove during clean
##				or clobber (in addition to $(OBJECTS) [Not Defined]
##CLOBBER_TARGETS_MISC	= Miscellaneous backup and junk files created during a
##				 build [Empty], removed during clobber
##CLOBBER_TARGETS	= Targets to remove on a clobber [Not Defined]
##
## Suffixes (all include the . ):
##LIB_PREFIX	= prefix for shared and archive libraries (e.g., lib or "")
##SHLIB_SUFFIX	= suffix for shared libraries (e.g., .dll, .sl, .so, etc)
##ARLIB_SUFFIX	= suffix for static/archive libraries (e.g., .a, .lib, etc)
##EXE_SUFFIX	= suffix for executable files (e.g, "", .exe, .out, etc)
##OBJ_SUFFIX	= suffix for object files (e.g, .o, .obj, etc)
##KEXT_SUFFIX	= suffix for kernel extensions (e.g, .kext) (DARWIN only)
##EXP_SUFFIX	= suffix for export files (e.g, .exp, etc)
##PRE_SUFFIX	= suffix for preprocessor output files (e.g, .pre, etc)
##RES_SUFFIX	= suffix for compiled resource object files (e.g, .res, etc)
##DSP_SUFFIX	= suffix for generated dsp files (e.g, _$(BUILD_TARGET).dsp)
##DSW_SUFFIX	= suffix for generated dsw files (e.g, _$(BUILD_TARGET).dsw)
##
## Basic Commands:
##CAT		= Unix cat command
##CHMOD		= change file permissions
##CP		= copy file
##ECHO		= echo output to stdout
##INSTALL	= tool to copy files if changed
##MV		= command to rename or move files
##PERL		= Perl Interpreter
##RM		= command to remove file(s)
##RMFORCE	= option to RM to ignore missing files and permissions problems
##RMRECURSE	= option to RM to recursively remove directories
##SED		= stream editor
##SHELL		= Default system shell (bash)
##TOUCH		= update file date (or create empty file)
##
## Paths:
##BIN_SUBDIR= subdirectory to install cmds to within
##				PROJ_BIN_DIR/MOD_BIN_SUBDIR or PROJ_STAGE_BIN_DIR/MOD_BIN_SUBDIR
##INCLUDE_SUBDIR= subdirectory to install includes to within
##				PROJ_INCLUDE_DIR/MOD_INCLUDE_SUBDIR or
##				PROJ_STAGE_INCLUDE_DIR/MOD_INCLUDE_SUBDIR
##TOOLS_DIR	- where to get development environment tools [/usr/local/ics/bin]
##TOOLCHAIN_DIR	- where to get cross compilation tools [varies based on BUILD_TARGET]
##MAKETOOLS_DIR	- where to get make tools [$(TL_DIR)/MakeTools]
##TL_DIR	= defines Top Level directory for build
##			  (ie. where Makerules directory exists.)
##COMN_INCLUDE_DIRS	= global include directories
##				 (include in PROJ_INCLUDE_DIRS or LOCAL_INCLUDE_DIRS when
##				 appropriate)
##COMN_LIB_DIRS		= global library directories
##				 (include in PROJ_LIB_DIRS or LOCAL_LIB_DIRS when appropriate)
##
##The following paths are of the form:
##		X_DIR - base directory for the subdirs below
##		X_BIN_DIR - where to copy executable files built
##		X_INCLUDE_DIR - where to copy include files built
##		X_LIB_DIR - where to copy archive lib files built
##		X_SHLIB_DIR - where to copy shared lib files built
##		X_SBR_DIR - where to copy sbr files built (Windows Only)
##Where X is:
## 		GLOBAL - during basic build pass, use to define PROJ versions
## 		PROJ - in a local makefile without Makerules.module during
##				basic build pass [Empty]
## 		MOD - in a local makefile during basic build pass [Empty]
## 		STAGE - during stage build pass, use to define PROJ_STAGE versions
## 		PROJ_STAGE - in a local makefile without Makerules.module during
##				stage build pass [Empty]
## 		MOD_STAGE - in a local makefile during stage build pass [Empty]
## 		RELEASE - during release step,(used to be part of COMN_ paths above)
##		if the MOD and MOD_STAGE versions are not defined (as would be
##		the case for a local makefile which is not part of a module)
##		The PROJ and PROJ_STATE versions will be used.  This occurs on
##		a path by path basis.  This applies to all the paths above
##		except X_DIR.
##
## Compilation/Build Commands and flags:
##Within the execution of commands, a common style is used for naming
##the variables:
##	X = tool name
##	XSYS = special windows options required to make tool work properly
##		for combination of BUILD_TARGET and BUILD_PLATFORM
##		defined in makerules.global
##	XLOCAL = User supplied flags for tool [Empty]
##		these can be defined in the local makefile
##	XMOD = User supplied flags for tool [Not Defined]
##		these can be defined in the local module makefile
##		for multiple level modules (ie. with sub-directories)
##		these will drive down into the sub-directories, much as
##		XPROJ flags drive into all the modules in a project
##	XPROJ = project level flags for tool [Not Defined]
##		these should only be defined in the makerules.project file
##	XENV = environment supplied flags for tool [Not Defined]
##		these can be defined in the environment
##	XMACH - flags to tell tool the machine type being built for
##		(does not apply to all tool types)
##	XFLAGS = complete set of flags for tool
##		composed from all the above flags
##
##BSC		= Browse File Builder (Windows Only)
##BSCSYS	= Win32 flags for Browse File Builder
##BSCLOCAL	= User flags for Browse File Builder [Empty]
##BSCMOD	= module level flags for Browse File Builder [Not Defined]
##BSCPROJ	= project level flags for Browse File Builder [Not Defined]
##BSCENV	= Environment defined Browse File Builder flags [Not Defined]
##BSCFLAGS	= complete set of flags for Browse File Builder
##
##TARGET_BSP	= BSP to be built.  This indicates the sub-directory in
##		BSP/ to build when doing a maketargets.bsp
##		If this is not defined, BSP builds do not occur
##		This only applies to VXWORKS based BUILD_TARGETs
##BSP_TARGETS	= set of files which are created by the BSP build (e.g. vxWorks, map, sym)
##		during a BSP build [internal value set in maketargets.bsp]
##BSP_MAKE_TARGET= which BSP to build (e.g. vxWorks, vxWorks,st, defaults to vxWorks)
##		[internal value set in maketargets.bsp]
##
##BUILDMSGS	= Message Table translator command
##BUILDMSGS_PL	= Message Table translator script file
##
##CC		= Platform C compiler program
##CCC		= Platform C++ compiler program
##CLOCALDEBUG= User defined C debugging compilation flags [Empty]
##				only used when BUILD_CONFIG=debug
##CCLOCALDEBUG= User defined C++ debugging compilation flags [Empty]
##				only used when BUILD_CONFIG=debug
##CDEBUG	= C debugging compilation flags
##CCDEBUG	= C++ debugging compilation flags
##COPT		= C optimization options
##CCOPT		= C++ optimization options
##CANSI		= C Compilation flags for ANSI C (Use in CLOCAL, CMOD or CPROJ for
##				ANSI-C compatible C source code)
##CPIC		= C Compilation flags for Position Indepdent Code
##				 (Use in CLOCAL, CMOD or CPROJ for Shared Library builds)
##CCPIC		= C++ Compilation flags for Position Indepdent Code
##				 (Use in CLOCAL, CMOD or CPROJ for Shared Library builds)
##CCRTTI 	= C++ compilation flags to enable C++ Run Time Type Information
##CCEXH		= C++ compilation flags to enable C++ Exception handling
##CLOCAL	= User defined C flags for compiling [Empty]
##CCLOCAL	= User defined C++ flags for compiling [Empty]
##CENV		= Environment defined C compilation flags [Not Defined]
##CCENV		= Environment defined C++ compilation flags [Not Defined]
##CENVFS	= Environment defined C compilation flags per feature set [Not Defined]
##CCENVFS	= Environment defined C++ compilation flags per feature set [Not Defined]
##CMOD		= module level defined C compilation flags [Not Defined]
##CCMOD		= module level defined C++ compilation flags [Not Defined]
##CPROJ		= project level defined C compilation flags [Not Defined]
##CCPROJ	= project level defined C++ compilation flags [Not Defined]
##CMACH		= defines for system type
##CSYS		= target/platform specific C compilation flags
##CCSYS		= target/platform specific C++ compilation flags
##SYS_INCLUDE_DIRS	= target/platform specific include directories
##LOCAL_INCLUDE_DIRS	= User include directories to search for C/C++ headers [Empty]
##MOD_INCLUDE_DIRS	= module level directories to search for C/C++ headers [Not Defined]
##PROJ_INCLUDE_DIRS	= project level directories to search for C/C++ headers [Not Defined]
##CSHARED	= C compilation flags for shared library .o files (include in
##		  		CLOCAL, CMOD or CPROJ when appropriate)
##CCSHARED	= C++ compilation flags for shared library .o files (include in
##		  		CCLOCAL, CMOD or CCPROJ when appropriate)
##CFLAGS	= Complete set of C compilation flags
##CCFLAGS	= Complete set of C++ compilation flags
##CINCLUDE_DIRS	= Complete set of C include directories
##CINCSRCH = full compiler directives for include paths to search
##SUBSYSTEM = Subsystem to build for (none, console or windows) (Windows Only)
##				[default console]
##USEMFC	= How Windows MFC should be used (none, static, shared, no_mfc)
##				(Windows Only) [default none]
##
##
##MAKEDEPEND	= System makedepend application (Windows Only, on others
##					$(CC) $(DEPENDFLAGS) -MT $(BUILDIR)/$*.o -MM is used)
##DEPENDFLAGS	= makedepend flags for .c files
##CCDEPENDFLAGS	= makedepend flags for .cpp files
##DEPENDMOD		= module level defined makedepend flags [Not Defined]
##DEPENDPROJ	= project level defined makedepend flags [Not Defined]
##DEPENDLOCAL	= user defined makedepend flags [Empty]
##DEPENDENV		= Environment defined makedepend flags [Not Defined]
##
##LD		= System linker
##LDSTRIP	= LD option to strip [-s] ("" on Win32)
##LDPDB_DEBUG	= LD option to create pdb file for debug builds [/debug /pdbtype:sept /debugtype:both] (Windows Only)
##LDPDB_RELEASE	= LD option to create pdb file for release builds [/debug /pdbtype:sept /debugtype:both] (Windows Only)
##LDLOCAL	= User defined C flags for linking [Empty]
##LDENV		= Environment defined linker flags [Not Defined]
##LDENVFS	= Environment defined linker flags per feature set [Not Defined]
##LDMOD		= module level defined linker flags [Not Defined]
##LDPROJ	= project level defined linker flags [Not Defined]
##LDMACH	= Flags to specify machine type to linker
##LDSYS		= target/platform specific Linker flags
##LDOUTPUT	= platform specific linker flag to specify output file
##LDSTATIC	= platform specific linker flag to specify linking only with static
##				(eg. non-dynamic) libraries
##LDFLAGS	= Complete set of Linker flags
##CCLIBS	= basic C++ libraries (include in MODLIBS, PROJLIBS or LIBS when appropriate)
##LOCALDEPLIBS	= User archive libraries to include in dependencies [Empty]
##				(omit the lib prefix and .a suffix)
##LOCALLIBS		= User libraries to use when linking [Empty]
##				(in addition to LOCALDEPLIBS)
##				(omit the lib prefix and .a suffix)
##LOCAL_LIB_DIRS	= User library directories for libpaths [Empty]
##MODDEPLIBS	= module level archive libraries to include in dependencies [Empty]
##				(omit the lib prefix and .a suffix)
##MODLIBS		= module level libraries to use when linking [Empty]
##				(in addition to MODDEPLIBS)
##MOD_LIB_DIRS	= module level library directories for libpaths [Empty]
##PROJDEPLIBS	= project level archive libraries to include in dependencies [Empty]
##				(omit the lib prefix and .a suffix)
##PROJLIBS		= project level libraries to use when linking [Empty]
##				(in addition to PROJDEPLIBS)
##				(omit the lib prefix and .a suffix)
##PROJ_LIB_DIRS	= project level library directories for libpaths [Empty]
##SYSLIBS		= target/platform specific library link directives
##SYS_LIB_DIRS	= target/platform specific library directories
##LD_LIB_DIRS = full list of library paths to search
##LDLIBSRCH = full link directives for library paths to search
##LDLIBS	= full link directives for libraries
##DEPLIBS_TARGETS = target names for make dependencies based on archive libraries
##
##LEX		= platform specific Lexical analyzer generator
##LEX_LIB	= library needed by code compiled with lex
##
##LINT		= platform specific Lint code analyzer
##LINTENV	= Environment defined lint flags [Not Defined]
##LINTLOCAL	= User defined lint flags [Empty]
##LINTMOD	= module level lint flags [Not Defined]
##LINTPROJ	= project level lint flags [Not Defined]
##LINTFLAGS	= lint flags (includes CFLAGS)
##
## Flags for building kernel modules/drivers/kext:
##CKERNEL	= C/C++ compiler flags to use
##CKERNELOPS= base C/C++ compiler flags to use [Darwin only]
##KERNEL_INCLUDE_DIRS= directories to get include files from
##KERNELLIBS = libraries to link with (and linker options)
##KERNELDIR = primary path to kernel headers/libs/etc for desired kernel version
##CPROJKERNEL= project level C compiler flags for use by individual makefiles
##				as part of CLOCAL and/or CCLOCAL for makefiles building
##				drivers, typically composed of $(CKERNEL) [Not Defined]
##
##MIDL		= IDL compiler (Windows Only)
##MIDLSYS	= Win32 specific IDL compiler flags
##MIDLLOCAL	= User flags for IDL compiler [Empty]
##MIDLMOD	= module level flags for IDL compiler [Not Defined]
##MIDLPROJ	= project level flags for IDL compiler [Not Defined]
##MIDLENV	= Environment defined IDL compiler flags [Not Defined]
##MIDLFLAGS	= Complete set of IDL compiler flags
##
##REGEXE	= command to update registry from a .exe file (Windows Only)
##REGDLL	= command to update registry from a .dll file (Windows Only)
##
##MKSHLIB	= command to build dynamic/shared library from .o's built w/CSHARED
##MKARLIB	= command to build static/archive library from .o's
##MKPARTIAL	= command to partially link .o's into a single .o's
##MKMODULE	= command to link .o's into a single kernel module (Linux only)
##DEFFILE	= definition file for dynamic/shared library used by MKSHLIB
##				(Windows Only)
##IMPLIBLOCAL	= User flags for Object Lirary Manager [Empty]
##
##PREP		= File post-processor to prepare files for release, by marking with
##				build date and version string
##PATCH_VERSION	= program to patch version into data in code file
##PATCH_ENG_VERSION	= program to patch version into data in code file for
##				engineer non-offical builds/releases
##CONVERT_RELEASETAG= program to convert RELEASE_TAG to a doted version format
##
##RSC		= resource compiler (Windows Only)
##RSCMACH	= flags to specify machine type to RSC compiler
##RSCLOCAL	= User flags for resource compiler [Empty]
##RSCMOD	= module level flags for resource compiler [Not Defined]
##RSCPROJ	= project level flags for resource compiler [Not Defined]
##RSCSYS	= Win32 specific resource compiler flags
##RSCENV	= Environment defined resource compiler flags [Not Defined]
##RSCFLAGS	= Compile set of Resource compiler flags
##
## The parameters below control the construction of Visual Studio Project Files
## These are only used on BUILD_PLATFORMS of DOS and CYGWIN when building
## for CYGWIN, WIN32 or MIPS.
##BUILDDSW	= command to build DSW file from a list of project files
##FINDDSPFILES= command to expand module names into complete pathnames
##				to dsp files
##DS_PROJECT= Developer Studio Project name (set to this directory name),
##            for use in .dsp and .dsw filenames
##DS_SUBPROJECTS= User specified other dsp files to include as subprojects
##            in dsw.  [Not Defined]
##			  These must be pathnames relative to TL_DIR.  They can be
##			  directory names (in which case the .dsp is assumed to have the
##			  same basename as the directory) or dsp filenames.
##DS_PROJECTS= Base set of projects to include in all dsw files
##DSP_SOURCES= User specified list of source files, in the present directory
##            which are to be included in the dsp file [Not Defined]
##DSP_FILE	= dsp file to build
##DSP_TMP_FILE=temp dsp file to build to
##DSW_FILE	= dsw file to build
##DSW_TMP_FILE= temp dsw file to build to
##DSP_SRC_DIR= Source directory to use for files in this directory
##DSP_GROUP	= Group name to use for this source directory in dsp file
##
##FUTURE - on windows allow PCH_TARGET to be defined, which will cause a
## precompiled header to be built or used
## PCHFLAGS - compiler files to make PCH_TARGET into a precompiled header
## FUTURE - support SUSYSTEM=posix on Windows
## FUTURE - rename DEPLIBS as DEPARLIBS and DEPSHLIBS if need to support
##			dependent shared libraries
##
#=============================================================================#