From 32423cf27bf3a14520e896bd5e1d924fedee86dc Mon Sep 17 00:00:00 2001
From: Jon Siwek <jsiwek@ncsa.illinois.edu>
Date: Wed, 17 Nov 2010 19:14:47 -0600
Subject: [PATCH] binpac: Customizable error messages for missing prereqs.

Adds the FindRequiredPackage() macro that wraps the functionality
of the standard find_package() macro.
---
 tools/binpac/CMakeLists.txt | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/tools/binpac/CMakeLists.txt b/tools/binpac/CMakeLists.txt
index fb5f5b49ff..ead7550646 100644
--- a/tools/binpac/CMakeLists.txt
+++ b/tools/binpac/CMakeLists.txt
@@ -45,8 +45,17 @@ endif ()
 ########################################################################
 ## Dependency Configuration
 
-find_package(FLEX REQUIRED)
-find_package(BISON REQUIRED)
+include(FindRequiredPackage)
+
+FindRequiredPackage(FLEX)
+FindRequiredPackage(BISON)
+
+if (MISSING_PREREQS)
+    foreach (prereq ${MISSING_PREREQ_DESCS})
+        message(SEND_ERROR ${prereq})
+    endforeach ()
+    message(FATAL_ERROR "Configuration aborted due to missing prerequisites")
+endif ()
 
 ########################################################################
 ## System Introspection