From 7d85462cc346168931b8bed2154dde3e42f23671 Mon Sep 17 00:00:00 2001
From: Clinton Stimpson <clinton@elemtech.com>
Date: Mon, 7 Apr 2008 19:43:04 -0400
Subject: [PATCH] BUG:  Fix problem with last patch when trying to take substr
 of shorter strings       than expected.  Fixes #6730.

---
 Modules/FindQt4.cmake | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Modules/FindQt4.cmake b/Modules/FindQt4.cmake
index e2f0971bc..3dfe1df67 100644
--- a/Modules/FindQt4.cmake
+++ b/Modules/FindQt4.cmake
@@ -993,7 +993,11 @@ IF (QT4_QMAKE_FOUND)
   # macro used to create the names of output files preserving relative dirs
   MACRO (QT4_MAKE_OUTPUT_FILE infile prefix ext outfile )
     STRING(LENGTH ${CMAKE_CURRENT_BINARY_DIR} _binlength)
-    STRING(SUBSTRING "${infile}" 0 ${_binlength} _checkinfile)
+    STRING(LENGTH ${infile} _infileLength)
+    SET(_checkinfile ${CMAKE_CURRENT_SOURCE_DIR})
+    IF(_infileLength GREATER _binlength)
+      STRING(SUBSTRING "${infile}" 0 ${_binlength} _checkinfile)
+    ENDIF(_infileLength GREATER _binlength)
     IF(CMAKE_CURRENT_BINARY_DIR MATCHES "${_checkinfile}")
       FILE(RELATIVE_PATH rel ${CMAKE_CURRENT_BINARY_DIR} ${infile})
     ELSE(CMAKE_CURRENT_BINARY_DIR MATCHES "${_checkinfile}")