Updates SDL to 2.0.10, and includes various fixes to correct compilation problems that sprung up.

Engine/lib/sdl/cmake/sdlchecks.cmake

@@ -381,9 +381,21 @@ macro(CheckX11)
         FindLibraryAndSONAME("${_LIB}")
     endforeach()
 
-    find_path(X_INCLUDEDIR X11/Xlib.h)
+    find_path(X_INCLUDEDIR X11/Xlib.h
+        /usr/pkg/xorg/include
+        /usr/X11R6/include
+        /usr/X11R7/include
+        /usr/local/include/X11
+        /usr/include/X11
+        /usr/openwin/include
+        /usr/openwin/share/include
+        /opt/graphics/OpenGL/include
+        /opt/X11/include
+    )
+
     if(X_INCLUDEDIR)
-      set(X_CFLAGS "-I${X_INCLUDEDIR}")
+      list(APPEND EXTRA_CFLAGS "-I${X_INCLUDEDIR}")
+      list(APPEND CMAKE_REQUIRED_INCLUDES "${X_INCLUDEDIR}")
     endif()
 
     check_include_file(X11/Xcursor/Xcursor.h HAVE_XCURSOR_H)
@@ -420,7 +432,7 @@ macro(CheckX11)
         endif()
         if(NOT HAVE_SHMAT)
           add_definitions(-DNO_SHARED_MEMORY)
-          set(X_CFLAGS "${X_CFLAGS} -DNO_SHARED_MEMORY")
+          list(APPEND EXTRA_CFLAGS "-DNO_SHARED_MEMORY")
         endif()
       endif()
 
@@ -439,8 +451,6 @@ macro(CheckX11)
         endif()
       endif()
 
-      set(SDL_CFLAGS "${SDL_CFLAGS} ${X_CFLAGS}")
-
       set(CMAKE_REQUIRED_LIBRARIES ${X11_LIB} ${X11_LIB})
       check_c_source_compiles("
           #include <X11/Xlib.h>
@@ -554,46 +564,6 @@ macro(CheckX11)
   endif()
 endmacro()
 
-# Requires:
-# - EGL
-# - PkgCheckModules
-# Optional:
-# - MIR_SHARED opt
-# - HAVE_DLOPEN opt
-macro(CheckMir)
-    if(VIDEO_MIR)
-        find_library(MIR_LIB mirclient mircommon egl)
-        pkg_check_modules(MIR_TOOLKIT mirclient>=0.26 mircommon)
-        pkg_check_modules(EGL egl)
-        pkg_check_modules(XKB xkbcommon)
-
-        if (MIR_LIB AND MIR_TOOLKIT_FOUND AND EGL_FOUND AND XKB_FOUND)
-            set(HAVE_VIDEO_MIR TRUE)
-            set(HAVE_SDL_VIDEO TRUE)
-
-            file(GLOB MIR_SOURCES ${SDL2_SOURCE_DIR}/src/video/mir/*.c)
-            set(SOURCE_FILES ${SOURCE_FILES} ${MIR_SOURCES})
-            set(SDL_VIDEO_DRIVER_MIR 1)
-
-            list(APPEND EXTRA_CFLAGS ${MIR_TOOLKIT_CFLAGS} ${EGL_CFLAGS} ${XKB_CFLAGS})
-
-            if(MIR_SHARED)
-                if(NOT HAVE_DLOPEN)
-                    message_warn("You must have SDL_LoadObject() support for dynamic Mir loading")
-                else()
-                    FindLibraryAndSONAME(mirclient)
-                    FindLibraryAndSONAME(xkbcommon)
-                    set(SDL_VIDEO_DRIVER_MIR_DYNAMIC "\"${MIRCLIENT_LIB_SONAME}\"")
-                    set(SDL_VIDEO_DRIVER_MIR_DYNAMIC_XKBCOMMON "\"${XKBCOMMON_LIB_SONAME}\"")
-                    set(HAVE_MIR_SHARED TRUE)
-                endif()
-            else()
-                set(EXTRA_LIBS ${MIR_TOOLKIT_LIBRARIES} ${EXTRA_LIBS})
-            endif()
-        endif()
-    endif()
-endmacro()
-
 macro(WaylandProtocolGen _SCANNER _XML _PROTL)
     set(_WAYLAND_PROT_C_CODE "${CMAKE_CURRENT_BINARY_DIR}/wayland-generated-protocols/${_PROTL}-protocol.c")
     set(_WAYLAND_PROT_H_CODE "${CMAKE_CURRENT_BINARY_DIR}/wayland-generated-protocols/${_PROTL}-client-protocol.h")
@@ -625,35 +595,6 @@ macro(CheckWayland)
   if(VIDEO_WAYLAND)
     pkg_check_modules(WAYLAND wayland-client wayland-scanner wayland-protocols wayland-egl wayland-cursor egl xkbcommon)
 
-    # We have to generate some protocol interface code for some various Wayland features.
-    if(WAYLAND_FOUND)
-      execute_process(
-        COMMAND ${PKG_CONFIG_EXECUTABLE} --variable=pkgdatadir wayland-client
-        WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
-        RESULT_VARIABLE WAYLAND_CORE_PROTOCOL_DIR_RC
-        OUTPUT_VARIABLE WAYLAND_CORE_PROTOCOL_DIR
-        ERROR_QUIET
-        OUTPUT_STRIP_TRAILING_WHITESPACE
-      )
-      if(NOT WAYLAND_CORE_PROTOCOL_DIR_RC EQUAL 0)
-        set(WAYLAND_FOUND FALSE)
-      endif()
-    endif()
-
-    if(WAYLAND_FOUND)
-      execute_process(
-        COMMAND ${PKG_CONFIG_EXECUTABLE} --variable=pkgdatadir wayland-protocols
-        WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
-        RESULT_VARIABLE WAYLAND_PROTOCOLS_DIR_RC
-        OUTPUT_VARIABLE WAYLAND_PROTOCOLS_DIR
-        ERROR_QUIET
-        OUTPUT_STRIP_TRAILING_WHITESPACE
-      )
-      if(NOT WAYLAND_PROTOCOLS_DIR_RC EQUAL 0)
-        set(WAYLAND_FOUND FALSE)
-      endif()
-    endif()
-
     if(WAYLAND_FOUND)
       execute_process(
         COMMAND ${PKG_CONFIG_EXECUTABLE} --variable=wayland_scanner wayland-scanner
@@ -685,11 +626,10 @@ macro(CheckWayland)
       file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/wayland-generated-protocols")
       include_directories("${CMAKE_CURRENT_BINARY_DIR}/wayland-generated-protocols")
 
-      WaylandProtocolGen("${WAYLAND_SCANNER}" "${WAYLAND_CORE_PROTOCOL_DIR}/wayland.xml" "wayland")
-
-      foreach(_PROTL relative-pointer-unstable-v1 pointer-constraints-unstable-v1 xdg-shell-unstable-v6)
-        string(REGEX REPLACE "\\-unstable\\-.*$" "" PROTSUBDIR ${_PROTL})
-        WaylandProtocolGen("${WAYLAND_SCANNER}" "${WAYLAND_PROTOCOLS_DIR}/unstable/${PROTSUBDIR}/${_PROTL}.xml" "${_PROTL}")
+      file(GLOB WAYLAND_PROTOCOLS_XML RELATIVE "${SDL2_SOURCE_DIR}/wayland-protocols/" "${SDL2_SOURCE_DIR}/wayland-protocols/*.xml")
+      foreach(_XML ${WAYLAND_PROTOCOLS_XML})
+        string(REGEX REPLACE "\\.xml$" "" _PROTL "${_XML}")
+        WaylandProtocolGen("${WAYLAND_SCANNER}" "${SDL2_SOURCE_DIR}/wayland-protocols/${_XML}" "${_PROTL}")
       endforeach()
 
       if(VIDEO_WAYLAND_QT_TOUCH)
@@ -1125,6 +1065,37 @@ macro(CheckUSBHID)
   endif()
 endmacro()
 
+# Check for HIDAPI joystick drivers. This is currently a Unix thing, not Windows or macOS!
+macro(CheckHIDAPI)
+  if(HIDAPI)
+    if(HIDAPI_SKIP_LIBUSB)
+      set(HAVE_HIDAPI TRUE)
+    else()
+      set(HAVE_HIDAPI FALSE)
+      pkg_check_modules(LIBUSB libusb)
+      if (LIBUSB_FOUND)
+        check_include_file(libusb.h HAVE_LIBUSB_H)
+        if (HAVE_LIBUSB_H)
+          set(HAVE_HIDAPI TRUE)
+        endif()
+      endif()
+    endif()
+
+    if(HAVE_HIDAPI)
+      set(SDL_JOYSTICK_HIDAPI 1)
+      set(HAVE_SDL_JOYSTICK TRUE)
+      file(GLOB HIDAPI_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/hidapi/*.c)
+      set(SOURCE_FILES ${SOURCE_FILES} ${HIDAPI_SOURCES})
+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBUSB_CFLAGS} -I${SDL2_SOURCE_DIR}/src/hidapi/hidapi")
+      if(NOT HIDAPI_SKIP_LIBUSB)
+        set(SOURCE_FILES ${SOURCE_FILES} ${SDL2_SOURCE_DIR}/src/hidapi/libusb/hid.c)
+        list(APPEND EXTRA_LIBS ${LIBUSB_LIBS})
+      endif()
+    endif()
+  endif()
+endmacro()
+
+
 # Requires:
 # - n/a
 macro(CheckRPI)