File 0001-Fix-linking-with-Wl-no-undefined.patch of Package MyGUI

From 4bd1332d39cfd3d42030f96903c18d8d0847f768 Mon Sep 17 00:00:00 2001
From: Ferdinand Thiessen <rpm@fthiessen.de>
Date: Mon, 20 Dec 2021 00:44:24 +0100
Subject: [PATCH] Fix linking with -Wl,--no-undefined

---
 CMake/Packages/FindSDL2.cmake | 6 ++++++
 Common/CMakeLists.txt         | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CMake/Packages/FindSDL2.cmake b/CMake/Packages/FindSDL2.cmake
index ca4d209c4..4261f0efd 100644
--- a/CMake/Packages/FindSDL2.cmake
+++ b/CMake/Packages/FindSDL2.cmake
@@ -97,5 +97,11 @@ IF(NOT SDL2_FOUND)
                                       VERSION_VAR SDL2_VERSION_STRING)
 
     mark_as_advanced(SDL2_INCLUDE_DIR SDL2_LIBRARY)
+    add_library(SDL2::Main INTERFACE IMPORTED)
+    set_target_properties(
+		SDL2::Main PROPERTIES
+		INTERFACE_LINK_LIBRARIES "${SDL2_LIBRARY}"
+		INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}"
+	)
     CMAKE_POLICY(POP)
 ENDIF(NOT SDL2_FOUND)
diff --git a/Common/CMakeLists.txt b/Common/CMakeLists.txt
index 1340f4373..18953e5a0 100644
--- a/Common/CMakeLists.txt
+++ b/Common/CMakeLists.txt
@@ -99,7 +99,7 @@ add_library(${PROJECTNAME} ${HEADER_FILES} ${SOURCE_FILES})
 
 mygui_set_platform_name(${MYGUI_RENDERSYSTEM})
 add_dependencies(${PROJECTNAME} MyGUI.${MYGUI_PLATFORM_NAME}Platform)
-target_link_libraries(${PROJECTNAME} MyGUI.${MYGUI_PLATFORM_NAME}Platform)
+target_link_libraries(${PROJECTNAME} MyGUI.${MYGUI_PLATFORM_NAME}Platform SDL2::Main)
 if (MYGUI_INSTALL_TOOLS OR MYGUI_INSTALL_DEMOS)
 	set_target_properties(${PROJECTNAME} PROPERTIES VERSION ${MYGUI_VERSION} SOVERSION "${MYGUI_VERSION_MAJOR}.${MYGUI_VERSION_MINOR}.${MYGUI_VERSION_PATCH}")
 	mygui_install_target(${PROJECTNAME} "")
-- 
2.34.1