Updating CMake build system to prepare for Teensy 3 integration.

- Tested with the AVR builds
- Partially tested with basic ARM test builds

arm.cmake

@@ -0,0 +1,111 @@
+###| CMAKE Kiibohd Controller |###
+#
+# Jacob Alexander 2011-2013
+# Due to this file's usefulness:
+#
+# Released into the Public Domain
+#
+# Freescale ARM CMake Build Configuration
+#
+###
+
+
+
+#| Set the Compilers (must be set first)
+include( CMakeForceCompiler )
+cmake_force_c_compiler  ( arm-none-eabi-gcc AVRCCompiler )
+cmake_force_cxx_compiler( arm-none-eabi-g++ AVRCxxCompiler )
+
+
+#| Compiler Binaries
+set( OBJCOPY "arm-none-eabi-objcopy" )
+set( OBJDUMP "arm-none-eabi-objdump" )
+set( NM      "arm-none-eabi-nm"      )
+set( SIZE    "arm-none-eabi-size"    )
+
+
+
+###
+# ARM Defines and Linker Options
+#
+
+#| Chip Name (Linker)
+#| You _MUST_ set this to match the board you are using
+#| type "make clean" after changing this, so all files will be rebuilt
+#|
+#| "mk20dx128"        # Teensy   3.0
+set( CHIP "mk20dx128" )
+
+
+#| CPU Type
+#| You _MUST_ set this to match the board you are using
+#| type "make clean" after changing this, so all files will be rebuilt
+#|
+#| "cortex-m4"        # Teensy   3.0
+set( CPU "cortex-m4" )
+
+
+#| Extra Compiler Sources
+#| Mostly for convenience functions like interrupt handlers
+set( COMPILER_SRCS
+	Lib/${CHIP}.c
+)
+
+
+#| Compiler flag to set the C Standard level.
+#|     c89   = "ANSI" C
+#|     gnu89 = c89 plus GCC extensions
+#|     c99   = ISO C99 standard (not yet fully implemented)
+#|     gnu99 = c99 plus GCC extensions
+set( CSTANDARD "-std=gnu99" )
+
+
+#| Warning Options
+#|  -Wall...:     warning level
+set( WARN "-Wall -g" )
+
+
+#| Tuning Options
+#|  -f...:        tuning, see GCC manual
+set( TUNING "-mthumb -nostdlib" )
+
+
+#| Optimization level, can be [0, 1, 2, 3, s]. 
+#|     0 = turn off optimization. s = optimize for size.
+#|     (Note: 3 is not always the best optimization level.)
+set( OPT "s" )
+
+
+#| Output Format
+#| srec, ihex, binary
+set( FORMAT "ihex" )
+
+
+#| Processor frequency.
+#|   Normally the first thing your program should do is set the clock prescaler,
+#|   so your program will run at the correct speed.  You should also set this
+#|   variable to same clock speed.  The _delay_ms() macro uses this, and many
+#|   examples use this variable to calculate timings.  Do not add a "UL" here.
+set( F_CPU "48000000" )
+
+
+#| Dependency Files
+#| Compiler flags to generate dependency files.
+set( GENDEPFLAGS "-MMD" )
+
+
+#| Compiler Flags
+add_definitions( "-mcpu=${CPU} -DF_CPU=${F_CPU} -O${OPT} ${TUNING} ${WARN} ${CSTANDARD} ${GENDEPFLAGS}" )
+
+
+#| Linker Flags
+set( LINKER_FLAGS "-mcpu=${CPU} -Wl,-Map=${TARGET}.map,--cref -Wl,--gc-sections -mthumb -T${CMAKE_CURRENT_SOURCE_DIR}/Lib/${CHIP}.ld" )
+
+
+#| Hex Flags (XXX, CMake seems to have issues if you quote the arguments for the custom commands...)
+set( HEX_FLAGS -O ${FORMAT} -R .eeprom )
+
+
+#| Lss Flags
+set( LSS_FLAGS -h -S -z )
+