http://www.vtk.org/Bug/view.php?id=11244

0001-Xcode-Avoid-trailing-space-in-ARCHS-list-11244.patch

From 0790af3bf54f8b1fcd418fec4ff968ffa55f334c Mon Sep 17 00:00:00 2001
From: Mikkel Krautz <mikkel@krautz.dk>
Date: Mon, 20 Sep 2010 10:02:39 -0400
Subject: [PATCH 1/2] Xcode: Avoid trailing space in ARCHS list (#11244)

With CMAKE_OSX_ARCHITECTURE settings such as $(ARCHS_STANDARD_32BIT),
the space inserted by the for loop would confuse Xcode if quoted. In
this particular example, what would be output would be:

  ARCHS = "$(ARCHS_STANDARD_32BIT) ";

The Xcode UI does not recognize this as the built-in "Standards 32-bit"
architecture setting unless the space is removed.
---
 Source/cmGlobalXCodeGenerator.cxx |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index c63b403..4e9969d 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -2726,12 +2726,14 @@ void cmGlobalXCodeGenerator
     buildSettings->AddAttribute("SDKROOT", 
                                 this->CreateString(sysroot));
     std::string archString;
+    const char* sep = "";
     for( std::vector<std::string>::iterator i = 
            this->Architectures.begin();
          i != this->Architectures.end(); ++i)
       {
+      archString += sep;
       archString += *i;
-      archString += " ";
+      sep = " ";
       }
     buildSettings->AddAttribute("ARCHS", 
                                 this->CreateString(archString.c_str()));
-- 
1.7.2.2