Merge tag '1.11.0-beta2' into jgrpp

# Conflicts:
#	.github/workflows/ci-build.yml
#	.github/workflows/release.yml
#	CMakeLists.txt
#	src/blitter/32bpp_optimized.cpp
#	src/debug.cpp
#	src/gfx.cpp
#	src/gfx_func.h
#	src/lang/czech.txt
#	src/lang/english.txt
#	src/lang/italian.txt
#	src/lang/swedish.txt
#	src/lang/ukrainian.txt
#	src/network/network_server.cpp
#	src/os/windows/crashlog_win.cpp
#	src/os/windows/win32.cpp
#	src/pathfinder/follow_track.hpp
#	src/screenshot.cpp
#	src/settings_type.h
#	src/spritecache.cpp
#	src/vehicle_gui.cpp
#	src/video/sdl2_v.cpp
#	src/video/video_driver.cpp
#	src/video/video_driver.hpp
#	src/video/win32_v.cpp

CMakeLists.txt

@@ -89,6 +89,11 @@ if(OPTION_TOOLS_ONLY)
     return()
 endif()
 
+if(APPLE)
+	# Avoid searching for headers in Frameworks, and libraries in LIBDIR.
+	set(CMAKE_FIND_FRAMEWORK LAST)
+endif()
+
 # Prefer -pthread over -lpthread, which is often the better option of the two.
 set(CMAKE_THREAD_PREFER_PTHREAD YES)
 # Make sure we have Threads available.
@@ -123,6 +128,10 @@ if(NOT WIN32)
     endif()
 endif()
 
+if(NOT EMSCRIPTEN)
+    find_package(OpenGL COMPONENTS OpenGL)
+endif()
+
 if(MSVC)
     find_package(Editbin REQUIRED)
 else()
@@ -306,6 +315,16 @@ if(NOT OPTION_DEDICATED)
     link_package(Fcitx)
     link_package(DBus1)
     link_package(X11)
+
+    if(SDL2_FOUND AND OPENGL_FOUND AND UNIX)
+        # SDL2 dynamically loads OpenGL if needed, so do not link to OpenGL when
+        # on Linux. For Windows, we need to link to OpenGL as we also have a win32
+        # driver using it.
+        add_definitions(-DWITH_OPENGL)
+        message(STATUS "OpenGL found -- -DWITH_OPENGL -- (via SDL2)")
+    else()
+        link_package(OpenGL TARGET OpenGL::GL)
+    endif()
 endif()
 
 if(APPLE)