variable names used in the per-platform makefile configuration files:

platform stuff
--------------

WINDOWS			set to 1 if this is a microsoft windows based platform

filesystem stuff and commands
-----------------------------

THIS_DIR		prefix to run a command from the current directory
DEL_CMD			the name of the delete command

compiler stuff
--------------

CC			the C/C++ compiler to use
OBJ			the object file extension
C_FLAGS			the standard set of compiler flags
C_INC			flag to add an include path
C_OUT			flag to specify the object file output
C_EXEOUT		flag to specify the executable file output
C_DEF			flag to add a define
C_OPT			flag to set the optimization level
OPT			the optimization level to use

library archiver
----------------

AR			library archiver command
RANLIB			ranlib command, if necessary
LIB_PREFIX		library file prefix
LIB_SUFFIX		library file suffix
LINK_OPENGL		link flags to link in windowing stuff and opengl
LINK_MATH		link flags to link in the system math library

windows specific stuff
----------------------

RC_RULE			makefile rule to use for the resource compiler