From ef51951785a86d23ca89118dc93842a132d1b903 Mon Sep 17 00:00:00 2001
From: An Tao <antao2002@gmail.com>
Date: Sat, 27 Feb 2021 17:39:13 +0800
Subject: [PATCH] Make projects created by dg_ctl support coroutines (#727)

---
 drogon_ctl/templates/cmake.csp | 31 ++++++++++++++++++-------------
 trantor                        |  2 +-
 2 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/drogon_ctl/templates/cmake.csp b/drogon_ctl/templates/cmake.csp
index 572c090b..f244b72d 100644
--- a/drogon_ctl/templates/cmake.csp
+++ b/drogon_ctl/templates/cmake.csp
@@ -5,11 +5,14 @@ include(CheckIncludeFileCXX)
 
 check_include_file_cxx(any HAS_ANY)
 check_include_file_cxx(string_view HAS_STRING_VIEW)
-if(HAS_ANY AND HAS_STRING_VIEW)
-  set(CMAKE_CXX_STANDARD 17)
-else()
-  set(CMAKE_CXX_STANDARD 14)
-endif()
+check_include_file_cxx(coroutine HAS_COROUTINE)
+if (HAS_ANY AND HAS_STRING_VIEW AND HAS_COROUTINE)
+    set(CMAKE_CXX_STANDARD 20)
+elseif (HAS_ANY AND HAS_STRING_VIEW)
+    set(CMAKE_CXX_STANDARD 17)
+else ()
+    set(CMAKE_CXX_STANDARD 14)
+endif ()
 
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
@@ -28,14 +31,16 @@ target_link_libraries(${PROJECT_NAME} PRIVATE Drogon::Drogon)
 
 # ##############################################################################
 
-if(CMAKE_CXX_STANDARD LESS 17)
-  # With C++14, use boost to support any and string_view
-  message(STATUS "use c++14")
-  find_package(Boost 1.61.0 REQUIRED)
-  target_include_directories(${PROJECT_NAME} PRIVATE ${Boost_INCLUDE_DIRS})
-else()
-  message(STATUS "use c++17")
-endif()
+if (CMAKE_CXX_STANDARD LESS 17)
+    # With C++14, use boost to support any and string_view
+    message(STATUS "use c++14")
+    find_package(Boost 1.61.0 REQUIRED)
+    target_include_directories(${PROJECT_NAME} PRIVATE ${Boost_INCLUDE_DIRS})
+elseif (CMAKE_CXX_STANDARD LESS 20)
+    message(STATUS "use c++17")
+else ()
+    message(STATUS "use c++20")
+endif ()
 
 aux_source_directory(controllers CTL_SRC)
 aux_source_directory(filters FILTER_SRC)
diff --git a/trantor b/trantor
index 6461410c..acb71c0b 160000
--- a/trantor
+++ b/trantor
@@ -1 +1 @@
-Subproject commit 6461410c899a7cdf083ec41c784b2beeb83c59cf
+Subproject commit acb71c0beab36d5d82e09ce80b8e1593ad79c178