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lufa-master/LUFA/Build/DMBS/Readme.md 4.54 KB
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  DMBS - Dean's Makefile Build System
  ===================================
  
  
  Project Overview
  ----------------
  
  GNU Make is scary, and it's tough to get the rules right sometimes. Many
  projects get by via simple copy-pasting of old makefiles, resulting in many
  redundant copies of the same old rules. DMBS aims to solve this by providing a
  simple modular set of makefiles which can be included by your project to quickly
  add various build functionality.
  
  This aims to replace the old WinAVR "mfile" makefile template, giving better
  functionality and much simpler user makefiles.
  
  
  Benefits:
  ----------------
  
  Apart from much simpler, cleaner makefiles DMBS carries the aim of making the
  process of troubleshooting build issues a little easier. Lots can go wrong, so
  DMBS tries to sanity check its inputs wherever possible, and produce
  human-readable error messages. Forgotten to set a variable? Get a
  `Makefile {X} value not set.` message, rather than a possibly unrelated message.
  Have the wrong filename? See `Source file does not exist: {X}` rather than the
  infamous `No rule to make target {X}` message.
  
  
  Use:
  ----------------
  
  A template user makefile is provided in the `Template` directory. DMBS modules
  are included via a GNU Make `include` directive. While the DMBS `core` module is
  always required, you can pick and choose what other modules you wish to add to
  your user project.
  
  [See here for the documentation on the individual modules provided by DMBS.](DMBS/ModulesOverview.md)
  If you're interested in writing your own DMBS module(s), [see here.](DMBS/WritingYourOwnModules.md)
  
  Here's an example user makefile:
  
  	MCU          = atmega128
  	ARCH         = AVR8
  	F_CPU        = 8000000
  	OPTIMIZATION = s
  	TARGET       = Template
  	SRC          = $(TARGET).c
  	CC_FLAGS     =
  	LD_FLAGS     =
  
  	# Default target
  	all:
  
  	# Include DMBS build script makefiles
  	DMBS_PATH   ?= ../DMBS
  	include $(DMBS_PATH)/core.mk
  	include $(DMBS_PATH)/gcc.mk
  	include $(DMBS_PATH)/cppcheck.mk
  	include $(DMBS_PATH)/doxygen.mk
  	include $(DMBS_PATH)/dfu.mk
  	include $(DMBS_PATH)/hid.mk
  	include $(DMBS_PATH)/avrdude.mk
  	include $(DMBS_PATH)/atprogram.mk
  
  Each DMBS module can optionally supply one or more Make variables and macros,
  which you can reference in your user makefile. Additionally, modules can require
  one or more variables to be set by the user makefile, with (in some cases) sane
  defaults used if left out.
  
  As modules are added, you can get a list of available targets by simply typing
  `make help` from the command line. This will produce a formatted list of targets
  as well as mandatory and optional variables and exposed variables and macros.
  
  
  Distribution
  ----------------
  
  You can embed DMBS in your project any way you like - some options are:
  1. A git submodule
  2. A source tarball
  3. A manually copied extracted archive
  
  The intention of DMBS is that users can just import it from whatever source
  they like. If your project needs to extend the existing modules in an unusual
  manner, or if you want to provide your own modules, you can include them in
  your project repository (or submit a patch to DMBS if your module is generic
  enough to warrant wide use).
  
  
  License
  ----------------
  
  DMBS is released into the public domain, making is suitable for use everywhere,
  by everyone. Contributions are greatly appreciated however, in order to make
  DMBS better for everyone.
  
  The actual license text is as follows:
  
  	This is free and unencumbered software released into the public domain.
  
  	Anyone is free to copy, modify, publish, use, compile, sell, or
  	distribute this software, either in source code form or as a compiled
  	binary, for any purpose, commercial or non-commercial, and by any
  	means.
  
  	In jurisdictions that recognize copyright laws, the author or authors
  	of this software dedicate any and all copyright interest in the
  	software to the public domain. We make this dedication for the benefit
  	of the public at large and to the detriment of our heirs and
  	successors. We intend this dedication to be an overt act of
  	relinquishment in perpetuity of all present and future rights to this
  	software under copyright law.
  
  	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  	EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  	IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  	OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  	ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  	OTHER DEALINGS IN THE SOFTWARE.
  
  	For more information, please refer to <http://unlicense.org/>