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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.
## Development
Issues, Milestones, pull requests and code hosting is on GitHub:
https://github.com/open-power/op-build
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 Talos system:
```
git clone --recursive git@github.com:open-power/op-build.git
cd op-build
. op-build-env
op-build talos_defconfig && op-build
```
There are also default configurations for other platforms in
`openpower/configs/` such as Habanero and Firestone.
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.
### 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 libxml2-dev libxml2-utils xsltproc \
wget bc
### Dependencies for 64-bit little endian Fedora systems
1. Install Fedora 25 64-bit.
2. Install the packages necessary for the build:
sudo dnf install gcc-c++ flex bison git ctags cscope expat-devel patch \
zlib-devel zlib-static texinfo perl-bignum "perl(XML::Simple)" \
"perl(YAML)" "perl(XML::SAX)" "perl(Fatal)" "perl(Thread::Queue)" \
"perl(Env)" "perl(XML::LibXML)" "perl(Digest::SHA1)" libxml2-devel \
which wget unzip tar cpio python bzip2 bc findutils ncurses-devel
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