libgl-xlib: Fix missing X11 symbols.

diff --git a/src/gallium/targets/libgl-xlib/SConscript b/src/gallium/targets/libgl-xlib/SConscript
index efa7e79..c1614d4 100644 (file)
--- a/src/gallium/targets/libgl-xlib/SConscript
+++ b/src/gallium/targets/libgl-xlib/SConscript
@@ -43,6 +43,8 @@ sources = [
     'xlib.c',
 ]
 
+env.Tool('x11')
+
 if 'softpipe' in env['drivers']:
     env.Append(CPPDEFINES = 'GALLIUM_SOFTPIPE')
     env.Prepend(LIBS = [softpipe])