/*
Copyright (c) by respective owners including Yahoo!, Microsoft, and
individual contributors. All rights reserved. Released under a BSD (revised)
license as described in the file LICENSE.
*/
This is the vowpal wabbit fast online learning code. For Windows, look at README.windows.txt
Prerequisite software
These prerequisites are usually pre-installed on many platforms. However, you may need to consult your favorite package manager (yum, apt, MacPorts, brew, ...) to install missing software.
- Boost library, with the
Boost::Program_Options
library option enabled. - GNU autotools: autoconf, automake, libtool, autoheader, et. al. This is not a strict prereq. On many systems (notably Ubuntu with
libboost-program-options-dev
installed), the providedMakefile
works fine. - (optional) git if you want to check out the latest version of vowpal wabbit, work on the code, or even contribute code to the main project.
Getting the code
You can download the latest version from here. The very latest version is always available via 'github' by invoking one of the following:
## For the traditional ssh-based Git interaction:
$ git clone git://github.com/JohnLangford/vowpal_wabbit.git
## For HTTP-based Git interaction
$ git clone https://github.com/JohnLangford/vowpal_wabbit.git
Compiling
You should be able to build the vowpal wabbit on most systems with:
$ make
$ make test # (optional)
If that fails, try:
$ ./autogen.sh
$ make
$ make test # (optional)
$ make install
Note that ./autogen.sh
requires automake (see the prerequisites, above.)
./autogen.sh
's command line arguments are passed directly to configure
as
if they were configure
arguments and flags.
Note that ./autogen.sh
will overwrite the supplied Makefile
, so
keeping a copy of Makefile
may be a good idea before running autogen.sh
.
Be sure to read the wiki: https://github.com/JohnLangford/vowpal_wabbit/wiki for the tutorial, command line options, etc.
The 'cluster' directory has it's own documentation for cluster parallel use, and the examples at the end of test/Runtests give some example flags.
C++ Optimization
The default C++ compiler optimization flags are very aggressive. If you should run into a problem, consider running configure
with the --enable-debug
option, e.g.:
$ ./configure --enable-debug
or passing your own compiler flags via the CXXOPTIMIZE
make variable:
$ make CXXOPTIMIZE="-O0 -g"
Ubuntu/Debian specific info
On Ubuntu/Debian/Mint and similar the following sequence should work for building the latest from github:
# -- Get libboost program-options:
apt-get install libboost-program-options-dev
# -- Get the python libboost bindings (python subdir) - optional:
apt-get install libboost-python-dev
# -- Get the vw source:
git clone git://github.com/JohnLangford/vowpal_wabbit.git
# -- Build:
cd vowpal_wabbit
make
make test # (optional)
make install
Ubuntu advanced build options (clang and static)
If you prefer building with clang
instead of gcc
(much faster build
and slighly faster executable), install clang
and change the make
step slightly:
apt-get install clang
make CXX=clang++
A statically linked vw
executable that is not sensitive to boost
version upgrades and can be safely copied between different Linux
versions (e.g. even from Ubuntu to Red-Hat) can be built and tested with:
make CXX='clang++ -static' clean vw test # ignore warnings
Mac OS X-specific info
OSX requires glibtools, which is available via the brew or MacPorts package managers.
Complete brew install of 8.0
brew install vowpal-wabbit
The homebrew formula for VW is located on github.
brew install dependencies + manual install of vowpal wabbit
brew install libtool
brew install boost --with-python
MacPorts
## Install glibtool and other GNU autotool friends:
$ port install libtool autoconf automake
## Build Boost for Mac OS X 10.8 and below
$ port install boost +no_single +no_static +openmpi +python27 configure.cxx_stdlib=libc++ configure.cxx=clang++
## Build Boost for Mac OS X 10.9 and above
$ port install boost +no_single +no_static +openmpi +python27
Mac OS X 10.8 and below: configure.cxx_stdlib=libc++
and configure.cxx=clang++
ensure that clang++
uses
the correct C++11 functionality while building Boost. Ordinarily, clang++
relies on the older GNU g++
4.2 series
header files and stdc++
library; libc++
is the clang
replacement that provides newer C++11 functionality. If
these flags aren't present, you will likely encounter compilation errors when compiling vowpalrabbit/cbify.cc. These
error messages generally contain complaints about std::to_string
and std::unique_ptr
types missing.
To compile:
$ sh autogen.sh --enable-libc++
$ make
$ make test # (optional)