From cd3c62a5cfa6fbcbd150e86deb14eed15f4d1e02 Mon Sep 17 00:00:00 2001
From: Darrell Anderson <humanreadable@yahoo.com>
Date: Sun, 15 Apr 2012 21:07:18 -0500
Subject: [PATCH] Fix libkscan/cmake build failure caused by cmake policy
 CMP0004. This resolves bug report 901. Thanks to David C. Rankin.

---
 libkscan/ConfigureChecks.cmake | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/libkscan/ConfigureChecks.cmake b/libkscan/ConfigureChecks.cmake
index 203bf375..a26c495d 100644
--- a/libkscan/ConfigureChecks.cmake
+++ b/libkscan/ConfigureChecks.cmake
@@ -39,8 +39,14 @@ if( SANE_INCLUDE_DIRS )
   string( REGEX REPLACE "(^| )-I" ";" SANE_INCLUDE_DIRS "${SANE_INCLUDE_DIRS}" )
 endif( )
 if( SANE_LIBRARIES )
-  string( REGEX REPLACE "(^| )-l" ";" SANE_LIBRARIES "${SANE_LIBRARIES}" )
-  string( REPLACE " " "" SANE_LIBRARIES "${SANE_LIBRARIES}" )
+  ## remove all spaces and replace whitespace with ';'
+  string( REGEX REPLACE "[ ]+" ";" SANE_LIBRARIES "${SANE_LIBRARIES}" )
+  ## remove all non-library information
+  string( REGEX REPLACE ";[-][^l]([^ ;])+" "" SANE_LIBRARIES "${SANE_LIBRARIES}" )
+  ## remove multiple ';'
+  string( REGEX REPLACE "[;]+" ";" SANE_LIBRARIES "${SANE_LIBRARIES}" )
+  ## remove '-l'
+  string( REGEX REPLACE "-l" "" SANE_LIBRARIES "${SANE_LIBRARIES}" )
 endif( )
 
 if( NOT HAVE_SANE )