Added m4 check for XORG_DRIVER_CHECK_EXT macro definition.  Updated m4 fatal 
messages to give better hint on how to resolve error when xorg macros are 
missing.  Previously, configure would continue in spite of the missing macros 
and the build would fail for syntax errors. 
---
 configure.ac |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/configure.ac b/configure.ac
index 05848ea..e6517e6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,10 +36,16 @@ AM_MAINTAINER_MODE
 
 # Require X.Org macros 1.8 or later for MAN_SUBSTS set by XORG_MANPAGE_SECTIONS
 m4_ifndef([XORG_MACROS_VERSION],
-          [m4_fatal([must install xorg-macros 1.8 or later before running 
autoconf/autogen])])
+          [m4_fatal([must install xorg-macros 1.8 or later before running 
autoconf/autogen.
+  Try "apt-get install xutils-dev" or "yum install xorg-x11-util-macros"])])
 XORG_MACROS_VERSION(1.8)
 XORG_DEFAULT_OPTIONS
 
+# Require X.Org server macros (i.e. XORG_DRIVER_CHECK_EXT) to check for 
required modules 
+m4_ifndef([XORG_DRIVER_CHECK_EXT],
+          [m4_fatal([must install xorg-server macros before running 
autoconf/autogen.
+  Try "apt-get install xserver-xorg-dev" or "yum install 
xorg-x11-server-devel"])])
+
 # Initialize libtool
 AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
-- 
1.7.3.3

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