From 19d03ef4acda8d8952fd441abc54b732035b9535 Mon Sep 17 00:00:00 2001
From: Gerald Combs <gerald@wireshark.org>
Date: Wed, 31 Mar 2021 11:30:45 -0700
Subject: [PATCH] CMake: Enable AUTO{MOC,UIC,RCC} according to our CMake
 version.

As noted in be2b0fc810, we need to set CMAKE_AUTO* before searching for
Qt packages when using 3.20.0 and later. However, this fails if we're
using CMake 3.9.6 or earlier. Set CMAKE_AUTO* where needed depending on
our CMake version.

Ping #17314.

(cherry picked from commit a80ea46ff7f19e4c7f9ade4970b0f2a2202f2ea2)

Conflicts:
	ui/qt/CMakeLists.txt
---
 CMakeLists.txt       | 8 +++++---
 ui/qt/CMakeLists.txt | 6 ++++++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3bc0f64a98..f481112c88 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1115,9 +1115,11 @@ ws_find_package(Systemd BUILD_sdjournal HAVE_SYSTEMD)
 
 # Build the Qt GUI?
 if(BUILD_wireshark)
-	set(CMAKE_AUTOMOC ON)
-	set(CMAKE_AUTOUIC ON)
-	set(CMAKE_AUTORCC ON)
+	if(NOT CMAKE_VERSION VERSION_LESS "3.10.0")
+		set(CMAKE_AUTOMOC ON)
+		set(CMAKE_AUTOUIC ON)
+		set(CMAKE_AUTORCC ON)
+	endif()
 
 	# Untested, may not work if CMAKE_PREFIX_PATH gets overwritten
 	# somewhere. The if WIN32 in this place is annoying as well.
diff --git a/ui/qt/CMakeLists.txt b/ui/qt/CMakeLists.txt
index cd36913f10..1bcbe318d9 100644
--- a/ui/qt/CMakeLists.txt
+++ b/ui/qt/CMakeLists.txt
@@ -631,6 +631,12 @@ include_directories(
 	${CMAKE_CURRENT_SOURCE_DIR}
 )
 
+if(CMAKE_VERSION VERSION_LESS "3.10.0")
+	set(CMAKE_AUTOMOC ON)
+	set(CMAKE_AUTOUIC ON)
+	set(CMAKE_AUTORCC ON)
+endif()
+
 if(NOT Qt5Widgets_VERSION VERSION_LESS "5.9")
 	# Drop the file modification time of source files from generated files
 	# to help with reproducible builds. We do not use QFileInfo.lastModified