add cpp17 build flags, remove old compilers from CI

.appveyor.yml

@@ -2,6 +2,7 @@ version: "{build}"
 image:
   - Visual Studio 2015
   - Visual Studio 2017
+  - Visual Studio 2019 Preview
 platform:
   - Win32
   - x64

.travis.yml

@@ -1,18 +1,6 @@
 language: cpp
 matrix:
   include:
-    - os: linux
-      dist: trusty
-      addons: { apt: { sources: ubuntu-toolchain-r-test, packages: ["xorg-dev", "g++-4.9"] } }
-      env: MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
-    - os: linux
-      dist: trusty
-      addons: { apt: { sources: ubuntu-toolchain-r-test, packages: ["xorg-dev", "g++-5"] } }
-      env: MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
-    - os: linux
-      dist: trusty
-      addons: { apt: { sources: ubuntu-toolchain-r-test, packages: ["xorg-dev", "g++-6"] } }
-      env: MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
     - os: linux
       dist: trusty
       addons: { apt: { sources: ubuntu-toolchain-r-test, packages: ["xorg-dev", "g++-7"] } }
@@ -21,18 +9,6 @@ matrix:
       dist: trusty
       addons: { apt: { sources: ubuntu-toolchain-r-test, packages: ["xorg-dev", "g++-8"] } }
       env: MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
-    - os: linux
-      dist: trusty
-      addons: { apt: { sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-precise-3.8"], packages: ["xorg-dev", "clang-3.8", "g++-5"] } }
-      env: MATRIX_EVAL="CC=clang-3.8 && CXX=clang++-3.8"
-    - os: linux
-      dist: trusty
-      addons: { apt: { sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-precise-3.9"], packages: ["xorg-dev", "clang-3.9", "g++-5"] } }
-      env: MATRIX_EVAL="CC=clang-3.9 && CXX=clang++-3.9"
-    - os: linux
-      dist: trusty
-      addons: { apt: { sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-trusty-4.0"], packages: ["xorg-dev", "clang-4.0", "g++-5"] } }
-      env: MATRIX_EVAL="CC=clang-4.0 && CXX=clang++-4.0"
     - os: linux
       dist: trusty
       addons: { apt: { sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-trusty-5.0"], packages: ["xorg-dev", "clang-5.0", "g++-7"] } }
@@ -41,24 +17,14 @@ matrix:
       dist: trusty
       addons: { apt: { sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-trusty-6.0"], packages: ["xorg-dev", "clang-6.0", "g++-7"] } }
       env: MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0"
-    - os: osx
+    - os: linux
-      osx_image: xcode8.3
+      dist: trusty
-      compiler: clang
+      addons: { apt: { sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-trusty-7"], packages: ["xorg-dev", "clang-7", "g++-7"] } }
-    - os: osx
+      env: MATRIX_EVAL="CC=clang-7 && CXX=clang++-7"
-      osx_image: xcode9
+    - os: linux
-      compiler: clang
+      dist: trusty
-    - os: osx
+      addons: { apt: { sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-trusty-8"], packages: ["xorg-dev", "clang-8", "g++-7"] } }
-      osx_image: xcode9.1
+      env: MATRIX_EVAL="CC=clang-8 && CXX=clang++-8"
-      compiler: clang
-    - os: osx
-      osx_image: xcode9.2
-      compiler: clang
-    - os: osx
-      osx_image: xcode9.3
-      compiler: clang
-    - os: osx
-      osx_image: xcode9.4
-      compiler: clang
     - os: osx
       osx_image: xcode10
       compiler: clang

CMakeLists.txt

@@ -142,7 +142,7 @@ target_compile_options(${PROJECT_NAME}
         -Wno-deprecated-declarations>)
 
 target_compile_features(${PROJECT_NAME}
-    PUBLIC cxx_std_14)
+    PUBLIC cxx_std_17)
 
 target_compile_definitions(${PROJECT_NAME}
     PUBLIC

untests/sources/untests_high/component.cpp

@@ -1,32 +0,0 @@
-/*******************************************************************************
- * This file is part of the "Enduro2D"
- * For conditions of distribution and use, see copyright notice in LICENSE.md
- * Copyright (C) 2018-2019, by Matvey Cherevko (blackmatov@gmail.com)
- ******************************************************************************/
-
-#include "_high.hpp"
-using namespace e2d;
-
-namespace
-{
-    class safe_starter_initializer final : private noncopyable {
-    public:
-        safe_starter_initializer() {
-            modules::initialize<starter>(0, nullptr,
-                starter::parameters(
-                    engine::parameters("component_untests", "enduro2d")
-                        .without_graphics(true)));
-        }
-
-        ~safe_starter_initializer() noexcept {
-            modules::shutdown<starter>();
-        }
-    };
-}
-
-TEST_CASE("component") {
-    safe_starter_initializer initializer;
-    library& l = the<library>();
-    {
-    }
-}

untests/sources/untests_high/node.cpp

@@ -63,7 +63,6 @@ namespace
 
 TEST_CASE("node") {
     safe_starter_initializer initializer;
-    world& w = the<world>();
     SECTION("empty_node") {
         auto n = node::create();
         REQUIRE(n);