From b727eadfc71dff8dabce7bdc3da3aeed6476d9a2 Mon Sep 17 00:00:00 2001
From: ClausKlein <claus.klein@arcormail.de>
Date: Mon, 15 Feb 2021 21:01:56 +0100
Subject: [PATCH] back to c++17

---
 CMakeLists.txt          | 2 +-
 cmake/tools.cmake       | 2 +-
 test/source/greeter.cpp | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b8a4dff..f04a2cb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,7 @@ option(BUILD_SHARED_LIBS "Create shared libraries if ON" YES)
 # XXX endif()
 
 if(NOT DEFINED CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 20)
+  set(CMAKE_CXX_STANDARD 17)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
   set(CMAKE_CXX_EXTENSIONS NO)
 endif()
diff --git a/cmake/tools.cmake b/cmake/tools.cmake
index 3d87468..3ed235e 100644
--- a/cmake/tools.cmake
+++ b/cmake/tools.cmake
@@ -10,7 +10,7 @@ include(${CMAKE_CURRENT_LIST_DIR}/CPM.cmake)
 CPMUsePackageLock(package-lock.cmake)
 
 if(NOT DEFINED CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 20)
+  set(CMAKE_CXX_STANDARD 17)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
   set(CMAKE_CXX_EXTENSIONS NO)
 endif()
diff --git a/test/source/greeter.cpp b/test/source/greeter.cpp
index 6fabbb5..ff3204b 100644
--- a/test/source/greeter.cpp
+++ b/test/source/greeter.cpp
@@ -14,7 +14,7 @@ TEST_CASE("Greeter") {
 }
 
 TEST_CASE("Greeter version") {
-#if (__APPLE__ || __cpp_lib_starts_ends_with)
+#if (__cpp_lib_starts_ends_with)
   static_assert(std::string_view(GREETER_VERSION).starts_with("1"));  // TBD C++20 only
   CHECK(std::string(GREETER_VERSION).starts_with("1"));               // SameMajorVersion
 #else