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This commit adds support for the avr-libc C library. According to the project page at http://www.nongnu.org/avr-libc , the avr-libc package provides a subset of the standard C library for Atmel AVR 8-bit RISC microcontrollers. In addition, the library provides the basic startup code needed by most applications. Support for this library in crosstool-ng is only enabled for the AVR 8-bit target. The avr-libc manual and most distributions build the AVR 8-bit gcc toolchain with the "avr" (non-canonical) target. Some experimentation also led to the conclusion that other (canonical) targets are not very well supported, so we force the "avr" target for crosstool-ng as well. The manual also recommends building avr-libc after the final gcc build. To accomplish this with crosstool-ng, a new do_libc_post_cc step is added, in which currently only avr-libc performs its build, and is a no-op for the other libc options. Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
This is the README for crosstool-NG
Crosstool-NG follows the autoconf dance. So, to get you
kick-started, just run:
./configure --help
If you are using a development snapshot, you'll have to
create the configure script, first. Just run:
./bootstrap
You will find the documentation in the directory 'docs'.
Here is a quick overview of what you'll find there:
0 - Table of content
1 - Introduction
2 - Installing crosstool-NG
3 - Configuring a toolchain
4 - Building the toolchain
5 - Using the toolchain
6 - Toolchain types
7 - Contributing
8 - Internals
A - Credits
B - Known issues
C - Misc. tutorials
You can also point your browser at:
http://crosstool-ng.org/
Aloha!