Removed Boost Thread as a built-time dependency

We use std::thread now.

CMakeLists.txt

@@ -1,4 +1,4 @@
-
+
 # set minimum version
 cmake_minimum_required(VERSION 2.8.5)
 
@@ -79,7 +79,7 @@ endif()
 
 find_package(SDL2 2.0.4 REQUIRED)
 find_package(Crypto 1.0 REQUIRED)
-find_package(Boost 1.56 REQUIRED COMPONENTS iostreams program_options regex system thread random)
+find_package(Boost 1.56 REQUIRED COMPONENTS iostreams program_options regex system random)
 
 # no, gettext executables are not required when NLS is deactivated
 find_package(Gettext)

INSTALL.md

@@ -25,7 +25,6 @@ order to build Wesnoth:
    * Regex
    * Program Options
    * System
-   * Thread
  * SDL2 libraries:
    * SDL2                      >= 2.0.4
    * SDL2_image                >= 2.0.0 (with PNG and JPEG support)

SConstruct

@@ -371,7 +371,6 @@ if env["prereqs"]:
         conf.CheckBoost("smart_ptr", header_only = True) & \
         conf.CheckBoost("locale") & \
         CheckAsio(conf) & \
-        conf.CheckBoost("thread", require_version = boost_version) & \
         conf.CheckBoost("filesystem") \
             and Info("Base prerequisites are met")) \
             or Warning("Base prerequisites are not met")

changelog.md

@@ -32,6 +32,8 @@
      Galician, Polish, Scottish Gaelic, Spanish, Ukrainian
  ### Multiplayer
    * Added team color to a few background units missing in Aethermaw.
+ ### Packaging
+   * Boost Thread is no longer a build-time dependency.
  ### User Interface
    * Swapped the position and formatting of game names and titles in the MP lobby.
    * Made Faction Select button's purpose more clear in MP Staging.