[clutter/wip/stereo: 1/2] build: Don't explicitly check for libGL

[Robert Bragg <rbragg src gnome org>]

commit 4761c8229d02a180f416068ccdf910d3713084c6
Author: Robert Bragg <robert linux intel com>
Date:   Thu Aug 4 16:48:35 2011 +0100

    build: Don't explicitly check for libGL
    
    Since libGL is abstracted by Cogl Clutter no longer needs to be
    explicitly checking for the gl pkg-config flags and directly lining with
    libGL.

 configure.ac |   17 -----------------
 1 files changed, 0 insertions(+), 17 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 46398df..07f6d80 100644
--- a/configure.ac
+++ b/configure.ac
@@ -265,20 +265,6 @@ AS_IF([test "x$enable_x11" = "xyes"],
         SUPPORT_GLX=1
         SUPPORT_COGL=1
 
-        # Mesa 7.3 added a GL pkg-config file, finally, but if a pkg-config
-        # file isn't found just add -lGL and hope for the best.
-        PKG_CHECK_EXISTS([gl],
-                         [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"],
-                         [FLAVOUR_LIBS="$FLAVOUR_LIBS -lGL"])
-
-        # We might fall back to DRM for sync-to-vblank on GLX
-        PKG_CHECK_EXISTS([libdrm],
-                         [
-                           AC_DEFINE([HAVE_DRM], [1], [Have libdrm support])
-                           BACKEND_PC_FILES="$BACKEND_PC_FILES libdrm"
-                         ],
-                         [])
-
         # we use fontconfig API and pango-fc when the fontconfig
         # configuration changes
         PKG_CHECK_EXISTS([pangoft2],
@@ -300,7 +286,6 @@ AS_IF([test "x$enable_gdk" = "xyes"],
         SUPPORT_COGL=1
 
 	BACKEND_PC_FILES="$BACKEND_PC_FILES gdk-3.0"
-	PKG_CHECK_EXISTS([gl], [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"], [])
       ])
 
 AS_IF([test "x$enable_wayland" = "xyes"],
@@ -312,8 +297,6 @@ AS_IF([test "x$enable_wayland" = "xyes"],
         SUPPORT_WAYLAND=1
         SUPPORT_EVDEV=1
 
-        PKG_CHECK_EXISTS([gl], [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"], [])
-        PKG_CHECK_EXISTS([egl], [BACKEND_PC_FILES="$BACKEND_PC_FILES egl"], [])
         PKG_CHECK_EXISTS([wayland-client xkbcommon],
                          [BACKEND_PC_FILES="$BACKEND_PC_FILES wayland-client xkbcommon"],
                          [])