From 6aef88c957f670a6ed47cf1e8c1cd92d3e5ec532 Mon Sep 17 00:00:00 2001
From: "Joakim L. Gilje" <jgilje@jgilje.net>
Date: Sun, 28 Nov 2021 20:54:32 +0100
Subject: [PATCH] set project cpp-files to c++17 when qt is included, search
 and link to a threading library

---
 src/CMakeLists.txt    | 5 ++++-
 src/qt/CMakeLists.txt | 4 ++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bf5a46bc3..3a6477dfe 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -130,6 +130,9 @@ if(APPLE)
 endif()
 
 if(QT)
+  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  set(CMAKE_CXX_EXTENSIONS OFF)
   find_package(Qt5 COMPONENTS Core Widgets REQUIRED)
 endif()
 
@@ -249,4 +252,4 @@ elseif(WIN32)
 	add_subdirectory(win)
 else()
 	add_subdirectory(unix)
-endif()
\ No newline at end of file
+endif()
diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
index a9a80d042..0f119f8c5 100644
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -4,6 +4,8 @@ set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 
+find_package(Threads REQUIRED)
+
 add_library(plat STATIC qt.c qt_main.cpp qt_platform.cpp qt_midi.cpp cpp11_thread.cpp)
 add_library(ui STATIC
     qt_ui.cpp
@@ -78,10 +80,12 @@ target_link_libraries(
     plat
     PRIVATE
     Qt5::Widgets
+    Threads::Threads
 )
 
 target_link_libraries(
     ui
     PRIVATE
     Qt5::Widgets
+    Threads::Threads
 )