Introduction

This repo is part of the tutorial found in https://github.com/ActivisionGameScience/ags_conda_recipes.git

It contains a single C++ library, ags_blosc_wrapper, that is a dumb wrapper around the popular c-blosc compression library (https://github.com/Blosc/c-blosc).

The purpose is to demonstrate several techniques:

• How to manage external dependencies using conda, and build using cmake
• How to build both static and dynamic binaries
• How to expose both a C++ and C API using the opaque pointer technique

The purpose of the C API (which is a wrapper around the C++ code) is to allow other languages to bind to this library easily.

In turn, this project serves as a dependency for two other projects described in the tutorial:

• https://github.com/ActivisionGameScience/ags_example_py_wrapper.git (a python wrapper around this library)
• https://github.com/ActivisionGameScience/ags_example_cpp_app.git (a C++ application that builds against this library)

How to build

The conda build recipe is located in https://github.com/ActivisionGameScience/ags_conda_recipes.git. You can use it to build, publish, and install the conda way.

However, you can also build and install this library by hand. Assuming that c-blosc is installed in the following location:

/some/path/include/blosc.h
/some/path/lib/libblosc.so

you can build and install with the following commands:

git clone https://github.com/ActivisionGameScience/ags_example_cpp_lib.git
cd ags_example_cpp_lib
mkdir build
cd build
cmake -G "Unix Makefiles" ../ -DCBLOSC_ROOT=/some/path -DCMAKE_INSTALL_PREFIX=/some/path
make
make install

You will now have the following files installed:

/some/path/include/activision_game_science/*.h
/some/path/lib/libags_blosc_wrapper.so
/some/path/lib/libags_blosc_wrapper_static.a

License

All files are licensed under the BSD 3-Clause License as follows:

Copyright (c) 2015, Activision Publishing, Inc.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.