Signed-off-by: Michael Grzeschik <[email protected]>
---
v1 -> v2: - added select to MESALIB_GL* on SDL2_OPENGL*
          - padded prompt entry with extra spaces
v2 -> v3: - added patch to add egl cflags on configure.in and enabled autogen.sh
v3 -> v4: - improved egl check with PKG_CHECK_MODULES
          - removed extract stage and added custom autogen.sh
v4 -> v5: - reworked the configuration for the package
          - added a patch to find a valid dri device in kms backend

 ...001-sdl-2.0.8-add-egl-cflags-to-test.patch |  55 +++++++
 ...-find-available-card-if-called-witho.patch | 129 +++++++++++++++
 patches/SDL2-2.0.8/autogen.sh                 |   3 +
 patches/SDL2-2.0.8/series                     |   5 +
 rules/sdl2.in                                 | 153 ++++++++++++++++++
 rules/sdl2.make                               | 153 ++++++++++++++++++
 6 files changed, 498 insertions(+)
 create mode 100644 
patches/SDL2-2.0.8/0001-sdl-2.0.8-add-egl-cflags-to-test.patch
 create mode 100644 
patches/SDL2-2.0.8/0002-sdl-2.0.8-KMSDRM-find-available-card-if-called-witho.patch
 create mode 100755 patches/SDL2-2.0.8/autogen.sh
 create mode 100644 patches/SDL2-2.0.8/series
 create mode 100644 rules/sdl2.in
 create mode 100644 rules/sdl2.make

diff --git a/patches/SDL2-2.0.8/0001-sdl-2.0.8-add-egl-cflags-to-test.patch 
b/patches/SDL2-2.0.8/0001-sdl-2.0.8-add-egl-cflags-to-test.patch
new file mode 100644
index 000000000..c86d48e5a
--- /dev/null
+++ b/patches/SDL2-2.0.8/0001-sdl-2.0.8-add-egl-cflags-to-test.patch
@@ -0,0 +1,55 @@
+From: Sergey Zhuravlevich <[email protected]>
+Date: Mon, 16 Jul 2018 12:03:42 +0200
+Subject: [PATCH] sdl-2.0.8: add egl-cflags to test
+
+- also call aclocal to expand PKG_CHECK_MODULES
+
+Signed-off-by: Sergey Zhuravlevich <[email protected]>
+Signed-off-by: Michael Grzeschik <[email protected]>
+---
+ autogen.sh   |  2 +-
+ configure.in | 11 +++++++++++
+ 2 files changed, 12 insertions(+), 1 deletion(-)
+
+diff --git a/autogen.sh b/autogen.sh
+index 9edfb8a7d913..2f1e2ef3d419 100755
+--- a/autogen.sh
++++ b/autogen.sh
+@@ -8,7 +8,7 @@ test -z "$srcdir" && srcdir=.
+ cd "$srcdir"
+ 
+ # Regenerate configuration files
+-cat acinclude/* >aclocal.m4
++aclocal
+ found=false
+ for autoconf in autoconf autoconf259 autoconf-2.59
+ do if which $autoconf >/dev/null 2>&1; then $autoconf && found=true; break; fi
+diff --git a/configure.in b/configure.in
+index 1c7e79338a88..06e37a1b7f98 100644
+--- a/configure.in
++++ b/configure.in
+@@ -2335,6 +2335,14 @@ dnl Find OpenGL ES
+ CheckOpenGLESX11()
+ {
+     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
++        PKG_CHECK_MODULES(EGL, [egl], [have_egl="yes"], [have_egl="no"])
++
++        save_CFLAGS="$CFLAGS"
++        if test x$have_egl = xyes; then
++          CFLAGS="$save_CFLAGS $EGL_CFLAGS"
++          EXTRA_CFLAGS="$EXTRA_CFLAGS $EGL_CFLAGS"
++        fi
++
+         AC_MSG_CHECKING(for EGL support)
+         video_opengl_egl=no
+         AC_TRY_COMPILE([
+@@ -2347,6 +2355,9 @@ CheckOpenGLESX11()
+         video_opengl_egl=yes
+         ])
+         AC_MSG_RESULT($video_opengl_egl)
++
++        CFLAGS="$save_CFLAGS"
++
+         if test x$video_opengl_egl = xyes; then
+             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
+         fi
diff --git 
a/patches/SDL2-2.0.8/0002-sdl-2.0.8-KMSDRM-find-available-card-if-called-witho.patch
 
b/patches/SDL2-2.0.8/0002-sdl-2.0.8-KMSDRM-find-available-card-if-called-witho.patch
new file mode 100644
index 000000000..e889f87ae
--- /dev/null
+++ 
b/patches/SDL2-2.0.8/0002-sdl-2.0.8-KMSDRM-find-available-card-if-called-witho.patch
@@ -0,0 +1,129 @@
+From 212c7c68ec228a1058f39497d18c65e9312d00df Mon Sep 17 00:00:00 2001
+From: Michael Grzeschik <[email protected]>
+Date: Thu, 12 Jul 2018 13:48:54 +0200
+Subject: [PATCH] sdl-2.0.8: KMSDRM: find available card if called without
+ index
+
+Signed-off-by: Michael Grzeschik <[email protected]>
+---
+ src/video/kmsdrm/SDL_kmsdrmvideo.c | 84 ++++++++++++++++++++++++++++--
+ 1 file changed, 80 insertions(+), 4 deletions(-)
+
+diff --git a/src/video/kmsdrm/SDL_kmsdrmvideo.c 
b/src/video/kmsdrm/SDL_kmsdrmvideo.c
+index 7855eeddb..f63c91b0a 100644
+--- a/src/video/kmsdrm/SDL_kmsdrmvideo.c
++++ b/src/video/kmsdrm/SDL_kmsdrmvideo.c
+@@ -41,15 +41,22 @@
+ #include "SDL_kmsdrmopengles.h"
+ #include "SDL_kmsdrmmouse.h"
+ #include "SDL_kmsdrmdyn.h"
++#include <sys/stat.h>
++#include <dirent.h>
++#include <errno.h>
+ 
+-#define KMSDRM_DRI_CARD_0 "/dev/dri/card0"
++#define KMSDRM_DRI_PATH "/dev/dri/"
+ 
+ static int
+-KMSDRM_Available(void)
++check_modestting(int devindex)
+ {
+     int available = 0;
++    char device[512];
++    int drm_fd;
++
++    sprintf(device, "%scard%d", KMSDRM_DRI_PATH, devindex);
+ 
+-    int drm_fd = open(KMSDRM_DRI_CARD_0, O_RDWR | O_CLOEXEC);
++    drm_fd = open(device, O_RDWR | O_CLOEXEC);
+     if (drm_fd >= 0) {
+         if (SDL_KMSDRM_LoadSymbols()) {
+             drmModeRes *resources = KMSDRM_drmModeGetResources(drm_fd);
+@@ -65,6 +72,72 @@ KMSDRM_Available(void)
+     return available;
+ }
+ 
++static int get_dricount(void)
++{
++    int devcount = 0;
++    struct dirent *res;
++    struct stat sb;
++    DIR *folder;
++
++    if (!(stat(KMSDRM_DRI_PATH, &sb) == 0
++                && S_ISDIR(sb.st_mode))) {
++        printf("The path %s cannot be opened or is not available\n",
++               KMSDRM_DRI_PATH);
++        return 0;
++    }
++
++    if (access(KMSDRM_DRI_PATH, F_OK) == -1) {
++        printf("The path %s cannot be opened\n",
++               KMSDRM_DRI_PATH);
++        return 0;
++    }
++
++    folder = opendir(KMSDRM_DRI_PATH);
++    if (!folder)
++        return 0;
++
++    while ((res = readdir(folder))) {
++        if (res->d_type == DT_CHR)
++            devcount++;
++    }
++
++    closedir(folder);
++
++    return devcount;
++}
++
++static int
++get_driindex(void)
++{
++    int i = 0;
++    int available = 0;
++    int devcount = get_dricount();
++
++    for (i = 0; i < devcount; i++) {
++        if (check_modestting(i)) {
++            available = 1;
++            break;
++        }
++    }
++
++    if (available)
++        return i;
++
++    return -ENOENT;
++}
++
++static int
++KMSDRM_Available(void)
++{
++    int ret = -ENOENT;
++
++    ret = get_driindex();
++    if (ret >= 0)
++        return 1;
++
++    return ret;
++}
++
+ static void
+ KMSDRM_Destroy(SDL_VideoDevice * device)
+ {
+@@ -83,7 +156,10 @@ KMSDRM_Create(int devindex)
+     SDL_VideoDevice *device;
+     SDL_VideoData *vdata;
+ 
+-    if (devindex < 0 || devindex > 99) {
++    if (!devindex || devindex > 99)
++        devindex = get_driindex();
++
++    if (devindex < 0) {
+         SDL_SetError("devindex (%d) must be between 0 and 99.\n", devindex);
+         return NULL;
+     }
+-- 
+2.18.0
+
diff --git a/patches/SDL2-2.0.8/autogen.sh b/patches/SDL2-2.0.8/autogen.sh
new file mode 100755
index 000000000..a430a4eb7
--- /dev/null
+++ b/patches/SDL2-2.0.8/autogen.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+./autogen.sh
diff --git a/patches/SDL2-2.0.8/series b/patches/SDL2-2.0.8/series
new file mode 100644
index 000000000..e4e931f38
--- /dev/null
+++ b/patches/SDL2-2.0.8/series
@@ -0,0 +1,5 @@
+# generated by git-ptx-patches
+#tag:base --start-number 1
+0001-sdl-2.0.8-add-egl-cflags-to-test.patch
+0002-sdl-2.0.8-KMSDRM-find-available-card-if-called-witho.patch
+# b803bb470cfcfd4d04f208304b9fd212  - git-ptx-patches magic
diff --git a/rules/sdl2.in b/rules/sdl2.in
new file mode 100644
index 000000000..0f20181a2
--- /dev/null
+++ b/rules/sdl2.in
@@ -0,0 +1,153 @@
+## SECTION=multimedia_sdl
+
+menuconfig SDL2
+       tristate
+       prompt "SDL2                          "
+       select LIBC_M
+       select LIBC_DL
+       select LIBC_PTHREAD
+       select GCCLIBS_GCC_S
+       select LIBUNWIND
+       select CROSS_NASM               if SDL2_VIDEO
+       select ALSA_LIB                 if SDL2_ALSA
+       sleect XORG_PROTO               if SDL2_XORG
+       select XORG_LIB_X11             if SDL2_XORG
+       select XORG_LIB_XXF86VM         if SDL2_XORG
+       select XORG_LIB_XRANDR          if SDL2_XORG
+       select XORG_LIB_XCURSOR         if SDL2_XORG
+       select XORG_LIB_XI              if SDL2_XORG
+       select TSLIB                    if SDL2_TSLIB
+       select DBUS                     if SDL2_DBUS
+       select LIBDRM                   if SDL2_WAYLAND
+       select MESALIB_GLX              if SDL2_OPENGL
+       select MESALIB_GLES1            if SDL2_OPENGLES1
+       select MESALIB_GLES2            if SDL2_OPENGLES2
+       select MESALIB_EGL_DRM          if SDL2_KMS
+       select MESALIB                  if SDL2_WAYLAND || SDL2_OPENGL
+       select MESALIB_GBM              if SDL2_WAYLAND
+       select MESALIB_EGL_WAYLAND      if SDL2_WAYLAND
+       select LIBXKBCOMMON             if SDL2_WAYLAND
+       select UDEV                     if SDL2_UDEV
+       select UDEV_LIBUDEV             if SDL2_UDEV
+       select PULSEAUDIO               if SDL2_PULSEAUDIO
+       select WAYLAND_PROTOCOLS        if SDL2_WAYLAND
+       help
+         Simple DirectMedia Layer is a cross-platform multimedia
+         library designed to provide low level access to audio,
+         keyboard, mouse, joystick, 3D hardware via OpenGL, and
+         2D video framebuffer.
+
+if SDL2
+
+menuconfig SDL2_AUDIO
+       bool
+       prompt "SDL2 Audio Support             "
+       default y
+       help
+         Turn on to enable audio support in libsdl2
+
+if SDL2_AUDIO
+
+config SDL2_OSS
+       bool
+       prompt "SDL2 OSS Support"
+       help
+         Open Sound System (OSS) is the first attempt in
+         unifying the digital audio architecture for UNIX.
+         OSS is a set of device drivers that provide a
+         uniform API across all the major UNIX architectures.
+
+config SDL2_ALSA
+       bool
+       prompt "SDL2 ALSA Support"
+       default y
+       help
+         The Advanced Linux Sound Architecture (ALSA)
+         provides audio and MIDI functionality to the
+         Linux operating system.
+
+config SDL2_PULSEAUDIO
+       bool
+       prompt "SDL2 Pulseaudio Support"
+       default y
+       help
+         PulseAudio is a sound system for POSIX OSes, meaning that it
+         is a proxy for your sound applications.
+
+endif
+
+menuconfig SDL2_VIDEO
+       bool
+       prompt "SDL2 Video Support             "
+       default y
+       help
+         Turn on to enable video support in libsdl2
+
+if SDL2_VIDEO
+
+config SDL2_KMS
+       bool
+       prompt "KMS Support"
+       help
+         kms video support
+
+config SDL2_XORG
+       bool
+       prompt "Xorg Support"
+       help
+         X.Org provides an open source implementation of the
+         X Window System.
+
+config SDL2_WAYLAND
+       bool
+       prompt "Wayland Support"
+       help
+         Wayland Window System.
+
+config SDL2_OPENGL
+       bool
+       prompt "OpenGL Support"
+       depends on SDL2_XORG
+       help
+         OpenGL is a multi-platform software interface to
+         graphics hardware, supporting rendering and imaging
+         operations.
+
+config SDL2_OPENGLES
+       bool
+       default SDL2_OPENGLES1 || SDL2_OPENGLES2
+
+config SDL2_OPENGLES1
+       bool
+       prompt "OpenGLES1 Support"
+       help
+         OpenGL ES1 graphics support
+
+config SDL2_OPENGLES2
+       bool
+       prompt "OpenGLES2 Support"
+       help
+         OpenGL ES2 graphics support
+
+endif
+
+config SDL2_TSLIB
+       bool
+       prompt "tslib Support"
+       help
+         Turn on support for the touchscreen library 'tslib'
+
+config SDL2_UDEV
+       bool
+       prompt "udev Support"
+       help
+         Turn on support for the udev library
+
+config SDL2_DBUS
+       bool
+       prompt "dbus Support"
+
+       help
+         Turn on support for the dbus library
+
+endif
diff --git a/rules/sdl2.make b/rules/sdl2.make
new file mode 100644
index 000000000..43c8e5e0b
--- /dev/null
+++ b/rules/sdl2.make
@@ -0,0 +1,153 @@
+# -*-makefile-*-
+#
+# Copyright (C) 2018 by Sergey Zhuravlevich
+#
+# See CREDITS for details about who has contributed to this project.
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+#
+# We provide this package
+#
+PACKAGES-$(PTXCONF_SDL2) += sdl2
+
+#
+# Paths and names
+#
+SDL2_VERSION   := 2.0.8
+SDL2_MD5               := 3800d705cef742c6a634f202c37f263f
+SDL2           := SDL2-$(SDL2_VERSION)
+SDL2_SUFFIX    := tar.gz
+SDL2_URL               := https://www.libsdl.org/release/$(SDL2).$(SDL2_SUFFIX)
+SDL2_SOURCE    := $(SRCDIR)/$(SDL2).$(SDL2_SUFFIX)
+SDL2_DIR               := $(BUILDDIR)/$(SDL2)
+SDL2_LICENSE   := zlib
+
+# ----------------------------------------------------------------------------
+# Prepare
+# ----------------------------------------------------------------------------
+
+#
+# autoconf
+#
+SDL2_CONF_TOOL := autoconf
+SDL2_CONF_OPT  := \
+       $(CROSS_AUTOCONF_USR) \
+       --enable-shared \
+       --disable-static \
+       --enable-libtool-lock \
+       --enable-assertions=auto \
+       --enable-dependency-tracking \
+       --enable-libc \
+       --enable-gcc-atomics \
+       --enable-atomic \
+       --$(call ptx/endis,PTXCONF_SDL2_AUDIO)-audio \
+       --$(call ptx/endis,PTXCONF_SDL2_VIDEO)-video \
+       --enable-render \
+       --enable-events \
+       --enable-joystick \
+       --enable-haptic \
+       --disable-power \
+       --disable-filesystem \
+       --enable-threads \
+       --enable-timers \
+       --enable-file \
+       --enable-loadso \
+       --enable-cpuinfo \
+       --enable-assembly \
+       --disable-ssemath \
+       --disable-mmx \
+       --disable-3dnow \
+       --disable-sse \
+       --disable-sse2 \
+       --disable-sse3 \
+       --disable-jack \
+       --disable-jack-shared \
+       --disable-sndio \
+       --disable-sndio-shared \
+       --disable-fusionsound \
+       --disable-fusionsound-shared \
+       --$(call ptx/endis,PTXCONF_SDL2_OSS)-oss \
+       --$(call ptx/endis,PTXCONF_SDL2_ALSA)-alsa \
+       --disable-alsatest \
+       --disable-alsa-shared \
+       --disable-esd \
+       --disable-esdtest \
+       --disable-esd-shared \
+       --$(call ptx/endis,PTXCONF_SDL2_PULSEAUDIO)-pulseaudio \
+       --$(call ptx/endis,PTXCONF_SDL2_PULSEAUDIO)-pulseaudio-shared \
+       --disable-arts \
+       --disable-arts-shared \
+       --disable-nas \
+       --disable-nas-shared \
+       --disable-diskaudio \
+       --disable-dummyaudio \
+       --disable-libsamplerate \
+       --disable-libsamplerate-shared \
+       --$(call ptx/endis,PTXCONF_SDL2_WAYLAND)-video-wayland \
+       --disable-video-wayland-qt-touch \
+       --$(call ptx/endis,PTXCONF_SDL2_WAYLAND)-wayland-shared \
+       --disable-video-mir \
+       --disable-mir-shared \
+       --disable-video-rpi \
+       --disable-altivec \
+       --$(call ptx/endis,PTXCONF_SDL2_XORG)-video-x11 \
+       --disable-x11-shared \
+       --$(call ptx/endis,PTXCONF_SDL2_XORG)-video-x11-vm \
+       --disable-video-vivante \
+       --disable-video-x11-xinerama \
+       --$(call ptx/endis,PTXCONF_SDL2_XORG)-video-x11-xrandr \
+       --$(call ptx/endis,PTXCONF_SDL2_XORG)-video-x11-xcursor \
+       --disable-video-x11-xdbe \
+       --$(call ptx/endis,PTXCONF_SDL2_XORG)-video-x11-xinput \
+       --disable-video-x11-scrnsaver \
+       --disable-video-x11-xshape \
+       --disable-video-cocoa \
+       --disable-render-metal \
+       --disable-video-directfb \
+       --disable-directfb-shared \
+       --$(call ptx/endis,PTXCONF_SDL2_KMS)-video-kmsdrm \
+       --$(call ptx/endis,PTXCONF_SDL2_KMS)-kmsdrm-shared \
+       --enable-video-dummy \
+       --$(call ptx/endis,PTXCONF_SDL2_OPENGL)-video-opengl \
+       --$(call ptx/endis,PTXCONF_SDL2_OPENGLES)-video-opengles \
+       --$(call ptx/endis,PTXCONF_SDL2_OPENGLES1)-video-opengles1 \
+       --$(call ptx/endis,PTXCONF_SDL2_OPENGLES2)-video-opengles2 \
+       --disable-video-vulkan \
+       --$(call ptx/endis,PTXCONF_SDL2_UDEV)-libudev \
+       --$(call ptx/endis,PTXCONF_SDL2_DBUS)-dbus \
+       --disable-ime \
+       --disable-ibus \
+       --disable-fcitx \
+       --$(call ptx/endis,PTXCONF_SDL2_TSLIB)-input-tslib \
+       --enable-pthreads \
+       --enable-pthread-sem \
+       --disable-directx \
+       --enable-sdl-dlopen \
+       --enable-clock_gettime \
+       --disable-rpath \
+       --disable-render-d3d \
+       --$(call ptx/wwo,PTXCONF_SDL2_XORG)-x
+
+# ----------------------------------------------------------------------------
+# Target-Install
+# ----------------------------------------------------------------------------
+
+$(STATEDIR)/sdl2.targetinstall:
+       @$(call targetinfo)
+
+       @$(call install_init, sdl2)
+       @$(call install_fixup, sdl2,PRIORITY,optional)
+       @$(call install_fixup, sdl2,SECTION,base)
+       @$(call install_fixup, sdl2,AUTHOR,"Sergey Zhuravlevich 
<[email protected]>")
+       @$(call install_fixup, sdl2,DESCRIPTION,missing)
+
+       @$(call install_lib, sdl2, 0, 0, 0644, libSDL2-2.0)
+
+       @$(call install_finish, sdl2)
+
+       @$(call touch)
+
+# vim: syntax=make
-- 
2.18.0


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