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From: Michael Walle <michael@walle.cc>
Date: Mon,  7 Mar 2011 23:32:39 +0100
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Subject: [Qemu-devel] [PATCH 08/14] configure: add opengl detection
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To: qemu-devel@nongnu.org
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Michael Walle <michael@walle.cc>, Alexander Graf <agraf@suse.de>

This patch introduce a new config option CONFIG_OPENGL.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 configure |   33 +++++++++++++++++++++++++++++++++
 1 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/configure b/configure
index e75e1a2..fe8791d 100755
--- a/configure
+++ b/configure
@@ -130,6 +130,7 @@ linux_aio=""
 attr=""
 vhost_net=""
 xfs=""
+opengl=""
 
 gprof="no"
 debug_tcg="no"
@@ -713,6 +714,10 @@ for opt do
   ;;
   --enable-vhost-net) vhost_net="yes"
   ;;
+  --disable-opengl) opengl="no"
+  ;;
+  --enable-opengl) opengl="yes"
+  ;;
   --*dir)
   ;;
   --disable-rbd) rbd="no"
@@ -872,6 +877,8 @@ echo "  --disable-kvm            disable KVM acceleration support"
 echo "  --enable-kvm             enable KVM acceleration support"
 echo "  --disable-nptl           disable usermode NPTL support"
 echo "  --enable-nptl            enable usermode NPTL support"
+echo "  --disable-opengl         disable OpenGL support"
+echo "  --enable-opengl          enable OpenGL support"
 echo "  --enable-system          enable all system emulation targets"
 echo "  --disable-system         disable all system emulation targets"
 echo "  --enable-user            enable supported user emulation targets"
@@ -1923,6 +1930,27 @@ EOF
   fi
 fi
 
+##########################################
+# opengl probe, used by milkymist-tmu2
+if test "$opengl" != "no" ; then
+  opengl_libs="-lGL"
+  cat > $TMPC << EOF
+#include <X11/Xlib.h>
+#include <GL/gl.h>
+#include <GL/glx.h>
+int main(void) { GL_VERSION; return 0; }
+EOF
+  if compile_prog "" "-lGL" ; then
+    opengl=yes
+	libs_softmmu="$opengl_libs $libs_softmmu"
+  else
+    if test "$opengl" = "yes" ; then
+      feature_not_found "opengl"
+    fi
+    opengl=no
+  fi
+fi
+
 #
 # Check for xxxat() functions when we are building linux-user
 # emulator.  This is done because older glibc versions don't
@@ -2530,6 +2558,7 @@ echo "Trace output file $trace_file-<pid>"
 echo "spice support     $spice"
 echo "rbd support       $rbd"
 echo "xfsctl support    $xfs"
+echo "OpenGL support    $opengl"
 
 if test $sdl_too_old = "yes"; then
 echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -2811,6 +2840,10 @@ if test "$spice" = "yes" ; then
   echo "CONFIG_SPICE=y" >> $config_host_mak
 fi
 
+if test "$opengl" = "yes" ; then
+  echo "CONFIG_OPENGL=y" >> $config_host_mak
+fi
+
 # XXX: suppress that
 if [ "$bsd" = "yes" ] ; then
   echo "CONFIG_BSD=y" >> $config_host_mak
-- 
1.7.2.3