From 1ccac0bb18f4bea60b92fe961fa84d96d8a9b9be Mon Sep 17 00:00:00 2001
From: Liangliang Nan <liangliang.nan@gmail.com>
Date: Sat, 14 Dec 2024 17:11:09 +0100
Subject: [PATCH] compatible with both Qt5 and Qt6

---
 code/CMakeLists.txt    | 8 +++++---
 code/cmake/UseQt.cmake | 7 +------
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 82db0e9..7e3edf9 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.12)
 
 if (APPLE)
-        set(CMAKE_OSX_DEPLOYMENT_TARGET "12.12" CACHE STRING "Minimum OS X deployment version" FORCE)
+        set(CMAKE_OSX_DEPLOYMENT_TARGET "10.15" CACHE STRING "Minimum OS X deployment version" FORCE)
         message(STATUS "Minimum OS X deployment version: ${CMAKE_OSX_DEPLOYMENT_TARGET}")
 endif ()
 
@@ -19,7 +19,7 @@ endif()
 
 ################################################################################
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 ################################################################################
@@ -40,7 +40,6 @@ set(POLYFIT_ROOT         ${CMAKE_CURRENT_LIST_DIR})
 set(POLYFIT_INCLUDE_DIR  ${POLYFIT_ROOT}  ${CMAKE_CURRENT_BINARY_DIR})
 set(POLYFIT_SOURCE_DIR   ${POLYFIT_ROOT})
 
-
 set(POLYFIT_glpk_DIR                ${POLYFIT_ROOT}/3rd_glpk)
 set(POLYFIT_lpsolve_DIR             ${POLYFIT_ROOT}/3rd_lpsolve)
 set(POLYFIT_qglviewer_DIR           ${POLYFIT_ROOT}/3rd_QGLViewer)
@@ -51,6 +50,9 @@ set(POLYFIT_glew_DIR                ${POLYFIT_ROOT}/3rd_glew)
 ### conditionally compile certain modules depending on libraries found on the system
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/cmake)
 
+if (POLICY CMP0167)
+        cmake_policy(SET CMP0167 NEW)
+endif ()
 find_package(Boost REQUIRED)
 
 ################################################################################
diff --git a/code/cmake/UseQt.cmake b/code/cmake/UseQt.cmake
index 92aff91..79fe3d7 100644
--- a/code/cmake/UseQt.cmake
+++ b/code/cmake/UseQt.cmake
@@ -50,11 +50,6 @@
 #   and links to the qtmain.lib library on Windows.
 # ------------------------------------------------------------------------------
 
-
-# Qt6 minimum compiler version
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
 # Find includes in corresponding build directories
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 # Instruct CMake to run moc automatically when needed.
@@ -67,7 +62,7 @@ set(CMAKE_AUTORCC ON)
 # This will find the Qt files.
 find_package(Qt6 COMPONENTS Core Widgets OpenGL OpenGLWidgets Xml QUIET)
 if (Qt6_FOUND)
-    message(STATUS "Found Qt6 version: ${Qt5Core_VERSION}")
+    message(STATUS "Found Qt6 version: ${Qt6Core_VERSION}")
     set(QtLibs Qt::Core Qt::Widgets Qt::OpenGL Qt::OpenGLWidgets Qt::Xml)
 else()
     find_package(Qt5 COMPONENTS Core Widgets OpenGL Xml QUIET)