Folly is an open-source C++ library developed and used at Facebook.

###Get Started

Folly is published on Github at https://github.com/facebook/folly; for discussions, there is a Google group at https://groups.google.com/d/forum/facebook-folly.

folly requires gcc 4.8+ and a version of boost compiled with C++11 support.

Please download googletest from https://googletest.googlecode.com/files/gtest-1.7.0.zip and unzip it in the folly/test subdirectory.

The following packages are required (feel free to cut and paste the apt-get command below):

sudo apt-get install \
    g++ \
    automake \
    autoconf \
    autoconf-archive \
    libtool \
    libboost-all-dev \
    libevent-dev \
    libdouble-conversion-dev \
    libgoogle-glog-dev \
    libgflags-dev \
    liblz4-dev \
    liblzma-dev \
    libsnappy-dev \
    make \
    zlib1g-dev \
    binutils-dev \
    libjemalloc-dev \
    libssl-dev

The packages listed above for Ubuntu 13.10 are required, as well as:

sudo apt-get install \
    libiberty-dev

The above packages are sufficient for Ubuntu 13.10 and Ubuntu 14.04.

In the folly directory, run

  autoreconf -ivf
  ./configure
  make
  make check
  sudo make install

There is a bootstrap script if you use Homebrew (http://brew.sh/). At the time of writing (OS X Yosemite 10.10.1) the default compiler (clang) has some issues building, but gcc 4.9.2 from Homebrew works fine. (This is taken care of by the bootstrap script.)

  cd folly
  ./bootstrap-osx-homebrew.sh
  make
  make check

• double-conversion (https://github.com/floitsch/double-conversion/)

  Download and build double-conversion. You may need to tell configure where to find it.

  [double-conversion/] ln -s src double-conversion

  [folly/] ./configure LDFLAGS=-L$DOUBLE_CONVERISON_HOME/ CPPFLAGS=-I$DOUBLE_CONVERISON_HOME/

  [folly/] LD_LIBRARY_PATH=$DOUBLE_CONVERISON_HOME/ make

• additional platform specific dependencies:

  Fedora 17 64-bit

  • gcc
  • gcc-c++
  • autoconf
  • autoconf-archive
  • automake
  • boost-devel
  • libtool
  • lz4-devel
  • lzma-devel
  • snappy-devel
  • zlib-devel
  • glog-devel
  • gflags-devel
  • scons (for double-conversion)