Change C++ version to 17

Author: dankmolot

.github/workflows/build.yml

@@ -22,7 +22,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [windows-latest, ubuntu-22.04]
+        os: [windows-latest, ubuntu-20.04]
         arch: [x64, x86]
         include:
           - os: windows-latest
@@ -31,7 +31,7 @@ jobs:
           - os: windows-latest
             arch: x86
             CMAKE_ARCH_FLAG: -A Win32
-          - os: ubuntu-22.04
+          - os: ubuntu-20.04
             arch: x86
             CMAKE_ARCH_FLAG: -DCMAKE_C_FLAGS="-m32" -DCMAKE_CXX_FLAGS="-m32"
           - os: macos-13

CMakeLists.txt

@@ -42,10 +42,10 @@ project(gmsv_async_postgres
 # Enable -fPIC flag
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
-# Require C++ 20
-set(CMAKE_CXX_STANDARD 20)
+# Require C++ 17
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_EXTENSIONS ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
 
 # Enable multithreaded compilation on Windows
 if(MSVC)

source/util.cpp

@@ -1,5 +1,4 @@
 #include <Platform.hpp>
-#include <format>
 
 #include "async_postgres.hpp"