Broker dependencies

Rewritten-docs.md

@@ -2627,6 +2627,32 @@ used.
 	- API notification using curl, authentication using HTTP Basic Auth
 	- asynchronous resending progress messages
 
+### Additional libraries
+
+Broker implementation depends on several open-source C and C++ libraries.
+
+- **libcurl** -- Libcurl is used for notifying REST API on job finish event over
+  HTTP protocol. Due to lack of documentation of all C++ bindings the plain C
+  API is used.
+- **cppzmq** -- Cppzmq is a simple C++ wrapper for core ZeroMQ C API. It
+  basicaly contains only one header file, but its API fits into borker's object
+  architecture.
+- **spdlog** -- Spdlog is small, fast and modern logging library used for system
+  logging. It is highly customizable and configurable from broker's
+  configuration.
+- **yaml-cpp** -- Yaml-cpp is used for parsing borker configuration text file in
+  YAML format.
+- **boost-filesystem** -- Boost filesystem is used for managing logging
+  directory (create if necessary) and parsing filesystem paths from strings as
+  written in broker's configuration. Filesystem operations will be included in
+  future releases of C++ standard, so this dependency may be removed in the
+  future.
+- **boost-program_options** -- Boost program options is used for
+  parsing of command line positional arguments. It is possible to use POSIX
+  `getopt` C function, but we decided to use boost, which provides nicer API and
+  is already used by worker component.
+
+
 ## Fileserver
 
 The fileserver component provides a shared file storage between the frontend and
@@ -2862,10 +2888,10 @@ Monitor is an optional part of the ReCodEx solution for reporting progress of
 job evaluation back to users in the real time. It is written in Python, tested
 versions are 3.4 and 3.5. Following dependencies are used:
 
-- zmq -- binding to ZeroMQ message framework
-- websockets -- framework for communication over WebSockets
-- asyncio -- library for fast asynchronous operations
-- pyyaml -- parsing YAML configuration files
+- **zmq** -- binding to ZeroMQ message framework
+- **websockets** -- framework for communication over WebSockets
+- **asyncio** -- library for fast asynchronous operations
+- **pyyaml** -- parsing YAML configuration files
 
 There is just one monitor instance required per broker. Also, monitor has to be
 publicly visible (has to have public IP address or be behind public proxy