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Building on Unix systems

First of all we need to make sure that all dependencies are satisfied.

This doc is trying to cover:

Debian/Ubuntu (contains packaging instructions)
Fedora/Centos
FreeBSD

Make sure you have all required dependencies for your system successfully installed.

If so then we are ready to go! Let's clone the repository and start building the i2pd:

git clone https://github.com/PurpleI2P/i2pd.git
cd i2pd/build
cmake -DCMAKE_BUILD_TYPE=Release # more options could be passed, see "CMake Options"
make

After successfull build i2pd could be installed with:

make install

or you can just use 'make' once you have all dependacies (boost and openssl) installed

git clone https://github.com/PurpleI2P/i2pd.git
cd i2pd
make

Debian/Ubuntu

You will need a compiler and other tools that could be installed with build-essential package:

sudo apt-get install build-essential

Also you will need a bunch of development libraries:

sudo apt-get install \
    libboost-chrono-dev \
    libboost-date-time-dev \
    libboost-filesystem-dev \
    libboost-program-options-dev \
    libboost-regex-dev \
    libboost-system-dev \
    libboost-thread-dev \
    libssl-dev

If you need UPnP support (don't forget to run CMake with WITH_UPNP=ON) miniupnpc development library should be installed:

sudo apt-get install libminiupnpc-dev

You may also build deb-package with the following:

sudo apt-get install fakeroot devscripts
cd i2pd
debuild --no-tgz-check

Fedora/Centos

You will need a compiler and other tools to perform a build:

sudo yum install make cmake gcc gcc-c++

Latest Fedora system using DNF instead of YUM by default, you may prefer to use DNF, but YUM should be ok

Centos 7 has CMake 2.8.11 in the official repositories that too old to build i2pd, CMake >=2.8.12 is required You could build CMake for Centos manualy(WARNING there are a lot of build dependencies!):
wget https://kojipkgs.fedoraproject.org/packages/cmake/2.8.12/3.fc21/src/cmake-2.8.12-3.fc21.src.rpm
yum-builddep cmake-2.8.12-3.fc21.src.rpm
rpmbuild --rebuild cmake-2.8.12-3.fc21.src.rpm
yum install ~/rpmbuild/RPMS/x86_64/cmake-2.8.12-3.el7.centos.x86_64.rpm

Also you will need a bunch of development libraries

sudo yum install boost-devel openssl-devel

If you need UPnP support (don't forget to run CMake with WITH_UPNP=ON) miniupnpc development library should be installed:

miniupnpc-devel

FreeBSD

Branch 9.X has gcc v4.2, that knows nothing about required c++11 standart.

Required ports:

devel/cmake
devel/boost-libs
lang/gcc47(or later version)

To use newer compiler you should set these variables(replace "47" with your actual gcc version):

export CC=/usr/local/bin/gcc47
export CXX=/usr/local/bin/g++47

Branch 10.X has more reliable clang version, that can finally build i2pd, but I still recommend to use gcc, otherwise you will fight it's bugs by your own.

CMake Options

Available CMake options(each option has a for of <key>=<value>, for more information see man 1 cmake):

CMAKE_BUILD_TYPE build profile (Debug/Release)
WITH_BINARY build i2pd itself
WITH_LIBRARY build libi2pd
WITH_STATIC build static versions of library and i2pd binary
WITH_UPNP build with UPnP support (requires libupnp)
WITH_AESNI build with AES-NI support (ON/OFF)
WITH_HARDENING enable hardening features (ON/OFF) (gcc only)
WITH_PCH use pre-compiled header (experimental, speeds up build)

Also there is -L flag for CMake that could be used to list current cached options:

cmake -L

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