Minimum version of Boost is now 1.58.

glynos · glynos · commit 2ec7421ab191 · 2016-07-16T11:44:31.000+02:00
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -45,7 +45,7 @@ add_definitions(-DBOOST_TEST_DYN_LINK)
 # Always use multi-threaded Boost libraries.
 set(Boost_USE_MULTI_THREADED ON)
 
-find_package(Boost 1.57.0 REQUIRED COMPONENTS system)
+find_package(Boost 1.58.0 REQUIRED COMPONENTS system)
 
 if (CPP-NETLIB_ENABLE_HTTPS)
   find_package( OpenSSL )
