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# OpenPOWER Firmware Build Environment
The OpenPOWER firmware build process uses Buildroot to create a toolchain and
build the various components of the PNOR firmware, including Hostboot, Skiboot,
OCC, Petitboot etc.
## Documentation
https://open-power.github.io/op-build/
See the doc/ directory for documentation source. Contributions
are *VERY* welcome!
## Development
Issues, Milestones, pull requests and code hosting is on GitHub:
https://github.com/open-power/op-build
See [CONTRIBUTING.md](CONTRIBUTING.md) for howto contribute code.
* Mailing list: openpower-firmware@lists.ozlabs.org
* Info/Subscribe: https://lists.ozlabs.org/listinfo/openpower-firmware
* Archives: https://lists.ozlabs.org/pipermail/openpower-firmware/
## Building an image
To build an image for a Blackbird system:
```
git clone --recursive git@github.com:open-power/op-build.git
cd op-build
./op-build blackbird_defconfig && ./op-build
```
There are also default configurations for other platforms in
`openpower/configs/`. Current POWER8 platforms include Habanero,
Firestone, and Garrison. Current POWER9 platforms include Witherspoon,
Boston (p9dsu), Romulus, and Zaius.
Buildroot/op-build supports both native and cross-compilation - it will
automatically download and build an appropriate toolchain as part of the build
process, so you don't need to worry about setting up a
cross-compiler. Compiling from an OpenPOWER host is officially supported.
The machine your building on will need Python 2.7, GCC 6.2 (or later), and
a handful of other packages (see below).
### Dependencies for 64-bit little endian Debian systems
1. Install Debian (>= 9.0).
2. Install the packages necessary for the build:
sudo apt-get install cscope ctags libz-dev libexpat-dev \
python language-pack-en texinfo \
build-essential g++ git bison flex unzip \
libssl-dev libxml-simple-perl libxml-sax-perl libxml-parser-perl libxml2-dev libxml2-utils xsltproc \
wget bc rsync
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