Fix CI build settings

Author: flexferrum

.travis.yml

@@ -42,15 +42,15 @@ matrix:
       env: COMPILER=clang++-6.0
       addons:
         apt:
-          sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-5.0']
+          sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-6.0']
           packages: ['cmake', 'clang-6.0', 'g++-6', 'libboost-dev']
 
     - os: linux
       compiler: clang
       env: COMPILER=clang++-7.0
       addons:
         apt:
-          sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-5.0']
+          sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty']
           packages: ['cmake', 'clang-7.0', 'g++-6', 'libboost-dev']
 
 script:

CMakeLists.txt

@@ -29,6 +29,8 @@ if (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang" OR ${CMAKE_CXX_COMPILER_ID} MATCHES
     endif ()
 else ()
     # MSVC
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /std:c++latest")
+
     if (NOT DEFINED MSVC_RUNTIME_TYPE)
         if (NOT WITH_TESTS)
             set (MSVC_RUNTIME_TYPE "/MD")