configure: rename OpenGL feature to GLX

As the probe now actually checks for the availability of GLX, rename it
accordingly. The only user of this feature is the milkymist-tmu2 model.

Signed-off-by: Michael Walle <michael@walle.cc>

configure

@@ -217,7 +217,7 @@ spice=""
 rbd=""
 smartcard_nss=""
 usb_redir=""
-opengl=""
+glx=""
 zlib="yes"
 guest_agent="yes"
 want_tools="yes"
@@ -858,9 +858,9 @@ for opt do
   ;;
   --enable-vhost-net) vhost_net="yes"
   ;;
-  --disable-opengl) opengl="no"
+  --disable-glx) glx="no"
   ;;
-  --enable-opengl) opengl="yes"
+  --enable-glx) glx="yes"
   ;;
   --disable-rbd) rbd="no"
   ;;
@@ -2435,9 +2435,9 @@ EOF
 fi
 
 ##########################################
-# opengl probe, used by milkymist-tmu2
-if test "$opengl" != "no" ; then
-  opengl_libs="-lGL -lX11"
+# GLX probe, used by milkymist-tmu2
+if test "$glx" != "no" ; then
+  glx_libs="-lGL -lX11"
   cat > $TMPC << EOF
 #include <X11/Xlib.h>
 #include <GL/gl.h>
@@ -2445,13 +2445,13 @@ if test "$opengl" != "no" ; then
 int main(void) { glBegin(0); glXQueryVersion(0,0,0); return 0; }
 EOF
   if compile_prog "" "-lGL -lX11" ; then
-    opengl=yes
+    glx=yes
   else
-    if test "$opengl" = "yes" ; then
-      feature_not_found "opengl"
+    if test "$glx" = "yes" ; then
+      feature_not_found "glx"
     fi
-    opengl_libs=
-    opengl=no
+    glx_libs=
+    glx=no
   fi
 fi
 
@@ -3429,7 +3429,7 @@ echo "rbd support       $rbd"
 echo "xfsctl support    $xfs"
 echo "nss used          $smartcard_nss"
 echo "usb net redir     $usb_redir"
-echo "OpenGL support    $opengl"
+echo "GLX support       $glx"
 echo "libiscsi support  $libiscsi"
 echo "build guest agent $guest_agent"
 echo "seccomp support   $seccomp"
@@ -3740,8 +3740,8 @@ if test "$usb_redir" = "yes" ; then
   echo "CONFIG_USB_REDIR=y" >> $config_host_mak
 fi
 
-if test "$opengl" = "yes" ; then
-  echo "CONFIG_OPENGL=y" >> $config_host_mak
+if test "$glx" = "yes" ; then
+  echo "CONFIG_GLX=y" >> $config_host_mak
 fi
 
 if test "$libiscsi" = "yes" ; then
@@ -4019,7 +4019,7 @@ case "$target_arch2" in
     target_nptl="yes"
   ;;
   lm32)
-    target_libs_softmmu="$opengl_libs"
+    target_libs_softmmu="$glx_libs"
   ;;
   m68k)
     bflt="yes"

hw/lm32/Makefile.objs

@@ -11,7 +11,7 @@ obj-y += milkymist-minimac2.o
 obj-y += milkymist-pfpu.o
 obj-y += milkymist-softusb.o
 obj-y += milkymist-sysctl.o
-obj-$(CONFIG_OPENGL) += milkymist-tmu2.o
+obj-$(CONFIG_GLX) += milkymist-tmu2.o
 obj-y += milkymist-uart.o
 obj-y += milkymist-vgafb.o
 obj-y += framebuffer.o

hw/milkymist-hw.h

@@ -87,7 +87,7 @@ static inline DeviceState *milkymist_pfpu_create(hwaddr base,
     return dev;
 }
 
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_GLX
 #include <X11/Xlib.h>
 #include <GL/glx.h>
 static const int glx_fbconfig_attr[] = {
@@ -101,7 +101,7 @@ static const int glx_fbconfig_attr[] = {
 static inline DeviceState *milkymist_tmu2_create(hwaddr base,
         qemu_irq irq)
 {
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_GLX
     DeviceState *dev;
     Display *d;
     GLXFBConfig *configs;