Use C++20. (#2322)

.github/workflows/CI.yml

@@ -280,7 +280,7 @@ jobs:
         include:  # package these differently
           - type: AppImage
             EXTRA_ARGS: '-DSUNSHINE_BUILD_APPIMAGE=ON'
-            dist: 20.04
+            dist: 22.04
 
     steps:
       - name: Maximize build space
@@ -323,6 +323,9 @@ jobs:
           # allow newer gcc
           sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
 
+          # allow libfuse2 for appimage on 22.04
+          sudo add-apt-repository universe
+
           sudo apt-get install -y \
             build-essential \
             cmake \
@@ -338,6 +341,7 @@ jobs:
             libcurl4-openssl-dev \
             libdrm-dev \
             libevdev-dev \
+            libfuse2 \
             libminiupnpc-dev \
             libmfx-dev \
             libnotify-dev \

cmake/targets/common.cmake

@@ -36,7 +36,7 @@ endif()
 
 target_link_libraries(sunshine ${SUNSHINE_EXTERNAL_LIBRARIES} ${EXTRA_LIBS})
 target_compile_definitions(sunshine PUBLIC ${SUNSHINE_DEFINITIONS})
-set_target_properties(sunshine PROPERTIES CXX_STANDARD 17
+set_target_properties(sunshine PROPERTIES CXX_STANDARD 20
         VERSION ${PROJECT_VERSION}
         SOVERSION ${PROJECT_VERSION_MAJOR})
 

src/config.cpp

@@ -9,6 +9,7 @@
 #include <iostream>
 #include <thread>
 #include <unordered_map>
+#include <utility>
 
 #include <boost/asio.hpp>
 #include <boost/filesystem.hpp>

src/httpcommon.cpp

@@ -7,6 +7,7 @@
 #include "process.h"
 
 #include <filesystem>
+#include <utility>
 
 #include <boost/property_tree/json_parser.hpp>
 #include <boost/property_tree/ptree.hpp>

src/network.cpp

@@ -7,6 +7,7 @@
 #include "logging.h"
 #include "utility.h"
 #include <algorithm>
+#include <sstream>
 
 using namespace std::literals;
 
@@ -169,7 +170,9 @@ namespace net {
   addr_to_url_escaped_string(boost::asio::ip::address address) {
     address = normalize_address(address);
     if (address.is_v6()) {
-      return "["s + address.to_string() + ']';
+      std::stringstream ss;
+      ss << '[' << address.to_string() << ']';
+      return ss.str();
     }
     else {
       return address.to_string();

src/network.h

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <tuple>
+#include <utility>
 
 #include <boost/asio.hpp>
 

src/nvhttp.cpp

@@ -8,6 +8,7 @@
 
 // standard includes
 #include <filesystem>
+#include <utility>
 
 // lib includes
 #include <Simple-Web-Server/server_http.hpp>

src/platform/linux/cuda.cpp

@@ -262,7 +262,7 @@ namespace cuda {
       fs::path sysfs_dir { sysfs_path };
       for (auto &entry : fs::directory_iterator { sysfs_dir }) {
         auto file = entry.path().filename();
-        auto filestring = file.generic_u8string();
+        auto filestring = file.generic_string();
         if (std::string_view { filestring }.substr(0, 4) != "card"sv) {
           continue;
         }
@@ -1049,4 +1049,4 @@ namespace platf {
 
     return display_names;
   }
-}  // namespace platf
+}  // namespace platf

src/platform/linux/input.cpp

@@ -1510,7 +1510,7 @@ namespace platf {
     std::stringstream ss;
     ss << std::hex << std::setfill('0');
     for (const auto &ch : str) {
-      ss << ch;
+      ss << static_cast<uint_least32_t>(ch);
     }
 
     std::string hex_unicode(ss.str());

src/platform/linux/kmsgrab.cpp

@@ -614,7 +614,7 @@ namespace platf {
         for (auto &entry : fs::directory_iterator { card_dir }) {
           auto file = entry.path().filename();
 
-          auto filestring = file.generic_u8string();
+          auto filestring = file.generic_string();
           if (filestring.size() < 4 || std::string_view { filestring }.substr(0, 4) != "card"sv) {
             continue;
           }
@@ -1641,7 +1641,7 @@ namespace platf {
     for (auto &entry : fs::directory_iterator { card_dir }) {
       auto file = entry.path().filename();
 
-      auto filestring = file.generic_u8string();
+      auto filestring = file.generic_string();
       if (std::string_view { filestring }.substr(0, 4) != "card"sv) {
         continue;
       }

src/platform/windows/input.cpp

@@ -1411,7 +1411,7 @@ namespace platf {
   ds4_update_state(gamepad_context_t &gamepad, const gamepad_state_t &gamepad_state) {
     auto &report = gamepad.report.ds4.Report;
 
-    report.wButtons = ds4_buttons(gamepad_state) | ds4_dpad(gamepad_state);
+    report.wButtons = static_cast<uint16_t>(ds4_buttons(gamepad_state)) | static_cast<uint16_t>(ds4_dpad(gamepad_state));
     report.bSpecial = ds4_special_buttons(gamepad_state);
 
     report.bTriggerL = gamepad_state.lt;

src/platform/windows/misc.cpp

@@ -1691,8 +1691,8 @@ namespace platf {
   }
   int64_t
   qpc_counter() {
-    LARGE_INTEGER performace_counter;
+    LARGE_INTEGER performance_counter;
-    if (QueryPerformanceCounter(&performace_counter)) return performace_counter.QuadPart;
+    if (QueryPerformanceCounter(&performance_counter)) return performance_counter.QuadPart;
     return 0;
   }
 

src/rtsp.cpp

@@ -11,6 +11,7 @@ extern "C" {
 
 #include <array>
 #include <cctype>
+#include <utility>
 
 #include <boost/asio.hpp>
 #include <boost/bind.hpp>

src/stream.h

@@ -3,6 +3,7 @@
  * @brief todo
  */
 #pragma once
+#include <utility>
 
 #include <boost/asio.hpp>
 

tests/CMakeLists.txt

@@ -107,7 +107,7 @@ list(REMOVE_ITEM SUNSHINE_SOURCES ${CMAKE_SOURCE_DIR}/src/main.cpp)
 add_executable(${PROJECT_NAME}
         ${TEST_SOURCES}
         ${SUNSHINE_SOURCES})
-set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 17)
+set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 20)
 target_link_libraries(${PROJECT_NAME}
         ${SUNSHINE_EXTERNAL_LIBRARIES}
         gtest

tools/CMakeLists.txt

@@ -5,7 +5,7 @@ project(sunshine_tools)
 include_directories("${CMAKE_SOURCE_DIR}")
 
 add_executable(dxgi-info dxgi.cpp)
-set_target_properties(dxgi-info PROPERTIES CXX_STANDARD 17)
+set_target_properties(dxgi-info PROPERTIES CXX_STANDARD 20)
 target_link_libraries(dxgi-info
         ${CMAKE_THREAD_LIBS_INIT}
         dxgi
@@ -13,7 +13,7 @@ target_link_libraries(dxgi-info
 target_compile_options(dxgi-info PRIVATE ${SUNSHINE_COMPILE_OPTIONS})
 
 add_executable(audio-info audio.cpp)
-set_target_properties(audio-info PROPERTIES CXX_STANDARD 17)
+set_target_properties(audio-info PROPERTIES CXX_STANDARD 20)
 target_link_libraries(audio-info
         ${CMAKE_THREAD_LIBS_INIT}
         ksuser
@@ -21,7 +21,7 @@ target_link_libraries(audio-info
 target_compile_options(audio-info PRIVATE ${SUNSHINE_COMPILE_OPTIONS})
 
 add_executable(sunshinesvc sunshinesvc.cpp)
-set_target_properties(sunshinesvc PROPERTIES CXX_STANDARD 17)
+set_target_properties(sunshinesvc PROPERTIES CXX_STANDARD 20)
 target_link_libraries(sunshinesvc
         ${CMAKE_THREAD_LIBS_INIT}
         wtsapi32
@@ -29,7 +29,7 @@ target_link_libraries(sunshinesvc
 target_compile_options(sunshinesvc PRIVATE ${SUNSHINE_COMPILE_OPTIONS})
 
 add_executable(ddprobe ddprobe.cpp)
-set_target_properties(ddprobe PROPERTIES CXX_STANDARD 17)
+set_target_properties(ddprobe PROPERTIES CXX_STANDARD 20)
 target_link_libraries(ddprobe
         ${CMAKE_THREAD_LIBS_INIT}
         dxgi