Building the htrace-c client
===============================================================================
To build the htrace-c client, activate the native profile.  Example:

    mvn package -DskipTests -Dmaven.javadoc.skip=true -Pnative

BUILD DEPENDENCIES
    C compiler
        To compile the sources.

    CMake
        The CMake build system.  Needed to run the native build.  See
        www.cmake.org.  This should be available via "yum install cmake" or
        similar.

    libcurl-devel
        A library to transfer data over HTTP.  See http://curl.haxx.se/dev/.
        Should be available via "yum install libcurl-devel" or similar.

TEST DEPENDENCIES
    C++ compiler
        To compile some of the unit tests.

    libjson-c
        A library to parse JSON.  This is only used for unit tests.  See
        https://github.com/json-c/json-c/wiki.  Should be available via "yum
        install json-c-devel" or similar.

    htraced binary
        You must compile the htraced binaries before running the unit tests.
        You can do this by running "mvn compile" on the top-level project, or
        in the htrace-htraced directory.