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============
Build Ceph
============
You can get Ceph software by retrieving Ceph source code and building it yourself.
To build Ceph, you need to set up a development environment, compile Ceph,
and then either install in user space or build packages and install the packages.
Build Prerequisites
===================
.. tip:: Check this section to see if there are specific prerequisites for your
Linux/Unix distribution.
Before you can build Ceph source code, you need to install several libraries
and tools::
./install-deps.sh
.. note:: Some distributions that support Google's memory profiler tool may use
a different package name (e.g., ``libgoogle-perftools4``).
Build Ceph
==========
Ceph is built using cmake. To build Ceph, navigate to your cloned Ceph
repository and execute the following::
cd ceph
./do_cmake.sh
cd build
make
.. topic:: Hyperthreading
You can use ``make -j`` to execute multiple jobs depending upon your system. For
example, ``make -j4`` for a dual core processor may build faster.
See `Installing a Build`_ to install a build in user space.
Build Ceph Packages
===================
To build packages, you must clone the `Ceph`_ repository. You can create
installation packages from the latest code using ``dpkg-buildpackage`` for
Debian/Ubuntu or ``rpmbuild`` for the RPM Package Manager.
.. tip:: When building on a multi-core CPU, use the ``-j`` and the number of
cores * 2. For example, use ``-j4`` for a dual-core processor to accelerate
the build.
Advanced Package Tool (APT)
---------------------------
To create ``.deb`` packages for Debian/Ubuntu, ensure that you have cloned the
`Ceph`_ repository, installed the `Build Prerequisites`_ and installed
``debhelper``::
sudo apt-get install debhelper
Once you have installed debhelper, you can build the packages::
sudo dpkg-buildpackage
For multi-processor CPUs use the ``-j`` option to accelerate the build.
RPM Package Manager
-------------------
To create ``.rpm`` packages, ensure that you have cloned the `Ceph`_ repository,
installed the `Build Prerequisites`_ and installed ``rpm-build`` and
``rpmdevtools``::
yum install rpm-build rpmdevtools
Once you have installed the tools, setup an RPM compilation environment::
rpmdev-setuptree
Fetch the source tarball for the RPM compilation environment::
wget -P ~/rpmbuild/SOURCES/ http://ceph.com/download/ceph-<version>.tar.bz2
Or from the EU mirror::
wget -P ~/rpmbuild/SOURCES/ http://eu.ceph.com/download/ceph-<version>.tar.bz2
Extract the specfile::
tar --strip-components=1 -C ~/rpmbuild/SPECS/ --no-anchored -xvjf ~/rpmbuild/SOURCES/ceph-<version>.tar.bz2 "ceph.spec"
Build the RPM packages::
rpmbuild -ba ~/rpmbuild/SPECS/ceph.spec
For multi-processor CPUs use the ``-j`` option to accelerate the build.
.. _Ceph: ../clone-source
.. _Installing a Build: ../install-storage-cluster#installing-a-build
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