Many thanks!!!
Downloading and installing the additional "Command Line Tools (OS X Mavericks) for Xcode - Late October"   fixed the problems.




> Subject: Re: [R-SIG-Mac] Trouble installing R packages from source on Mavericks
> From: szehnder@uni-bonn.de
> Date: Sun, 27 Oct 2013 23:15:04 +0100
> CC: r-sig-mac@r-project.org
> To: c1aymore@hotmail.com
> 
> After updating to Mavericks you need the new Xcoe developer tools under Xcode -> Xcode Developer tools -> Other Xcode Developer tools. Have you done this? 
> 
> Best
> Simon
> On 27 Oct 2013, at 23:05, Claymore M <c1aymore@hotmail.com> wrote:
> 
> > 
> 
 		 	   		  
	[[alternative HTML version deleted]]

