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diff --git a/lib/lufa/LUFA/Build/DMBS/Readme.md b/lib/lufa/LUFA/Build/DMBS/Readme.md new file mode 100644 index 0000000000..f4f7a5f15c --- /dev/null +++ b/lib/lufa/LUFA/Build/DMBS/Readme.md @@ -0,0 +1,123 @@ +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/> |