<tool_dependency>
    <package name="bzlib" version="1.0.6">
        <install version="1.0">
            <actions>
                <action type="download_by_url">http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz</action>
                <action type="shell_command">make</action>
                <action type="shell_command">make install PREFIX=$INSTALL_DIR</action>
                <action type="set_environment">

                    <environment_variable action="prepend_to" name="PATH">$INSTALL_DIR/bin</environment_variable>
                    <environment_variable action="prepend_to" name="LIBRARY_PATH">$INSTALL_DIR/lib</environment_variable>
                    <environment_variable action="prepend_to" name="LD_LIBRARY_PATH">$INSTALL_DIR/lib</environment_variable>
                    <environment_variable action="prepend_to" name="CPLUS_INCLUDE_PATH">$INSTALL_DIR/include</environment_variable>
                    <environment_variable name="BZLIB_ROOT_PATH" action="set_to">$INSTALL_DIR</environment_variable>
                </action>
            </actions>
        </install>
        <readme>Compiling bzlib requires make and a C compiler.</readme>
    </package>
</tool_dependency>