For developers, one of the most important things you can do to help litecoin, is to do gitian builds of litecoin.It helps elminate the single point of failure, with centralized software builds.This distributes the verification amongst multiple litecoin builders.Gitian is a secure source-control oriented software distribution method.This means you can download trusted binaries that are verified by multiple builders.Gitian uses a deterministic build process to allow multiple builders to create identical binaries.This allows multiple parties to sign the resulting binaries, guaranteeing that the binaries and tool chain were not tampered with and that the same source was used.It remove the build and distribution process as a single point of failure.~  There are several important prerequisites you'll need to build litecoin using Gitian-Builder.The build process runs on a VM (Virtual Machine) on your current Ubuntu OS.It will take compatible hardware, as well as software.The build process can be resource intensive, and is best to have enough RAM, and hard disk space.

Once you've determined you have compatible hardware, and have 64 bit Ubuntu installed, and running.We'll need to install all of the required dependences to run a Virtual Machine, and run gitian-builder.This tutorial assumes you have installed required developer packages.If you receive errors, then you may have to install packages & dependencies not listed herin.This will install the required packages, and KVM.Inside the terminal program: sudo apt-get install git apache2 apt-cacher-ng python-vm-builder ruby sudo apt-get install qemu-kvm Download, and prepare Gitian builder, and bitcoin.In terminal, from your home/user/ directory: /devrandom/gitian-builder.git /bitcoin/bitcoin.git Now prepare gitian-builder.We must create a directory to hold the necessary files.mkdir gitian-builder/inputs cd gitian-builder/inputs # Inputs for Linux and Win32: /files/download.php?file=miniupnpc-1.6.tar.gz' /works/qrencode/qrencode-3.2.0.tar.bz2' # Inputs for Win32: (Linux has packages for these) wget 'https://downloads.sourceforge.net/project/boost/boost/1.50.0/boost_1_50_0.tar.bz2' /source/openssl-1.0.1c.tar.gz' /berkeley-db/db-4.8.30.NC.tar.gz' wget 'https://downloads.sourceforge.net/project/libpng/zlib/1.2.6/zlib-1.2.6.tar.gz' wget 'https://downloads.sourceforge.net/project/libpng/libpng15/older-releases/1.5.9/libpng-1.5.9.tar.gz' /archive/qt/4.8/4.8.3/qt-everywhere-opensource-src-4.8.3.tar.gz' /files/protobuf-2.5.0.tar.bz2' cd ../.. It's time to build our virtual machine.

This process will take some time for each one.Sit back and relax.sudo bin/make-base-vm --arch amd64 sudo bin/make-base-vm --arch i386 Once you've created both virtual machines, we can test to see if everything installed properly.PATH=$PATH:$(pwd)/libexec make-clean-vm --suite lucid --arch i386 start-target 32 lucid-i386 on-target ls -la stop-target sudo service apt-cacher-ng status ls -1 /dev/kvm You should have an output that looks similar to the following: The following will build litecoind, and litecoin-qt on Linux32, and Linux64 cd litecoin git pull cd ../gitian-builder git pull ./bin/gbuild --commit bitcoin=HEAD ../litecoin/contrib/gitian-descriptors/gitian.yml Inside your gitian-builder/build/out/ directory will be the compiled litecoin distribution.ethereum dollar cost averagingMake sure you copy these files out of the /build/out directory, as the next build will clear them out automatically.litecoin transaction fee rules

The following will build litecoind, and litecoin-qt on Win32.It will be located in the gitian-builder/build/out/ directory.sudo apt-get install build-essential sudo apt-get install libssl-dev sudo apt-get install libboost-all-dev sudo apt-get install libdb4.8-dev sudo apt-get install libdb4.8++-dev sudo apt-get install libminiupnpc-dev For developers, one of the most important things you can do to help litecoin, is to do gitian builds of litecoin.ethereum cost gbpIt helps elminate the single point of failure with centralized software builds.In this tutorial, we will be using the KVM virtual machine.Others will work, but for simplicity sake, we will be using KVM.In terminal, from your home/user/ directory: /devrandom/gitian-builder.git /bitcoin/bitcoin.git Building the KVM virtual machine We must create a directory (named inputs) to hold the necessary files.Then fetch/download the necessary files.

cd gitian-builder mkdir inputs cd inputs wget 'http://miniupnp.free.fr/files/download.php?file=miniupnpc-1.6.tar.gz' -O miniupnpc-1.6.tar.gz /source/openssl-1.0.1c.tar.gz' /berkeley-db/db-4.8.30.NC.tar.gz' wget 'http://zlib.net/zlib-1.2.6.tar.gz' /pub/libpng/png/src/libpng-1.5.9.tar.gz' /works/qrencode/qrencode-3.2.0.tar.bz2' wget 'http://downloads.sourceforge.net/project/boost/boost/1.50.0/boost_1_50_0.tar.bz2' /qt4/source/qt-everywhere-opensource-src-4.8.3.tar.gz' /files/protobuf-2.5.0.tar.bz2' cd .. It's time to build our virtual machine.This process will take some time for each one (i.e.You should be inside the gitian-builder directory.sudo bin/make-base-vm -a i386 sudo bin/make-base-vm -a amd64 Once the KVM virtual machine(s) have been built, we can test to make sure they work properly.PATH=$PATH:$(pwd)/libexec make-clean-vm --suite lucid --arch i386 start-target 32 lucid-i386 on-target ls -la stop-target sudo service apt-cacher-ng status ls -1 /dev/kvm You should have an output that looks the image below.

You should now see the files "base-lucid-amd64.qcow2 & base-lucid-i386.qcow2, in the gitian-builder directory.See below: Now we will create additional files that are needed.They need to be placed into the inputs directory, after each build.This only needs to be done once on the first run, OR, when dependencies change versions../bin/gbuild ../litecoin/contrib/gitian-descriptors/boost-win32.yml mv build/out/boost-win32-1.50.0-gitian2.zip inputs/ ./bin/gbuild ../litecoin/contrib/gitian-descriptors/qt-win32.yml mv build/out/qt-win32-4.8.3-gitian-r1.zip inputs/ ./bin/gbuild ../litecoin/contrib/gitian-descriptors/deps-win32.yml mv build/out/litecoin-deps-0.0.5.zip inputs/ Adding GPG signatures to your build process helps secure the litecoin distributions.If you don't already have a GPG key, you can find more information, and instructions here: From the home/username directory (usually the directory that contains litecoin, gitian-builder, and gitian.sigs.ltc directories) export SIGNER=(your gitian key, ie bluematt, sipa, etc) export VERSION=0.8.0 cd ./gitian-builder Now to compile the litecoin distributions, with your GPG signature.