sdl: Fix compilation with libX11 >= 1.5.99.902

Applying an upstream patch to fix a compilation error with versions of
libX11 since 1.5.99.902. This patch modifies configure.in so we need to
run autogen.sh to make it working correctly. Running autoreconf will
fail because SDL uses bit tricky automake/autoconf configuration.

Upstream patch URL:
   http://hg.libsdl.org/SDL/rev/91ad7b43317a

Fixes:
   http://autobuild.buildroot.net/results/bf8/bf83466a7bbb0635d97fe279a18778d92f20bea2/

[Peter: add comment why we're doing this, add needed dependencies]
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

2 files changed, 70 insertions, 0 deletions

diff --git a/package/sdl/sdl-0002-fix-compilation-with-libx11.patch b/package/sdl/sdl-0002-fix-compilation-with-libx11.patch
new file mode 100644
index 0000000000..27f244883e
--- /dev/null
+++ b/package/sdl/sdl-0002-fix-compilation-with-libx11.patch
@@ -0,0 +1,60 @@
+sdl: Fix compilation with libX11 >= 1.5.99.902
+Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
+
+# HG changeset patch
+# User Azamat H. Hackimov <azamat.hackimov@gmail.com>
+# Date 1370184533 -21600
+# Node ID 91ad7b43317a6387e115ecdf63a49137f47e42c8
+# Parent  f7fd5c3951b9ed922fdf696f7182e71b58a13268
+Fix compilation with libX11 >= 1.5.99.902.
+
+These changes fixes bug #1769 for SDL 1.2
+(http://bugzilla.libsdl.org/show_bug.cgi?id=1769).
+
+diff -r f7fd5c3951b9 -r 91ad7b43317a configure.in
+--- a/configure.in	Wed Apr 17 00:56:53 2013 -0700
++++ b/configure.in	Sun Jun 02 20:48:53 2013 +0600
+@@ -1169,6 +1169,17 @@
+             if test x$definitely_enable_video_x11_xrandr = xyes; then
+                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XRANDR)
+             fi
++            AC_MSG_CHECKING(for const parameter to _XData32)
++            have_const_param_xdata32=no
++            AC_TRY_COMPILE([
++              #include <X11/Xlibint.h>
++              extern int _XData32(Display *dpy,register _Xconst long *data,unsigned len);
++            ],[
++            ],[
++            have_const_param_xdata32=yes
++            AC_DEFINE(SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32)
++            ])
++            AC_MSG_RESULT($have_const_param_xdata32)
+         fi
+     fi
+ }
+diff -r f7fd5c3951b9 -r 91ad7b43317a include/SDL_config.h.in
+--- a/include/SDL_config.h.in	Wed Apr 17 00:56:53 2013 -0700
++++ b/include/SDL_config.h.in	Sun Jun 02 20:48:53 2013 +0600
+@@ -283,6 +283,7 @@
+ #undef SDL_VIDEO_DRIVER_WINDIB
+ #undef SDL_VIDEO_DRIVER_WSCONS
+ #undef SDL_VIDEO_DRIVER_X11
++#undef SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32
+ #undef SDL_VIDEO_DRIVER_X11_DGAMOUSE
+ #undef SDL_VIDEO_DRIVER_X11_DYNAMIC
+ #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT
+diff -r f7fd5c3951b9 -r 91ad7b43317a src/video/x11/SDL_x11sym.h
+--- a/src/video/x11/SDL_x11sym.h	Wed Apr 17 00:56:53 2013 -0700
++++ b/src/video/x11/SDL_x11sym.h	Sun Jun 02 20:48:53 2013 +0600
+@@ -165,7 +165,11 @@
+  */
+ #ifdef LONG64
+ SDL_X11_MODULE(IO_32BIT)
++#if SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32
++SDL_X11_SYM(int,_XData32,(Display *dpy,register _Xconst long *data,unsigned len),(dpy,data,len),return)
++#else
+ SDL_X11_SYM(int,_XData32,(Display *dpy,register long *data,unsigned len),(dpy,data,len),return)
++#endif
+ SDL_X11_SYM(void,_XRead32,(Display *dpy,register long *data,long len),(dpy,data,len),)
+ #endif
+ 
diff --git a/package/sdl/sdl.mk b/package/sdl/sdl.mk
index ef723ddab5..a30a31eea5 100644
--- a/package/sdl/sdl.mk
+++ b/package/sdl/sdl.mk
@@ -11,6 +11,16 @@ SDL_LICENSE = LGPLv2.1+
 SDL_LICENSE_FILES = COPYING
 SDL_INSTALL_STAGING = YES
 
+# we're patching configure.in, but package cannot autoreconf with our version of
+# autotools, so we have to do it manually instead of setting SD_AUTORECONF = YES
+define SDL_RUN_AUTOGEN
+	cd $(@D) && ./autogen.sh
+endef
+
+SDL_POST_PATCH_HOOKS += SDL_RUN_AUTOGEN
+SDL_DEPENDENCIES += host-automake host-autoconf host-libtool
+
+
 ifeq ($(BR2_PACKAGE_SDL_FBCON),y)
 SDL_CONF_OPT += --enable-video-fbcon=yes
 else