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Re: mac new OS "mountain lion", compile function,

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  • Subject: [mg127498] Re: mac new OS "mountain lion", compile function,
  • From: Murray Eisenberg <murray at>
  • Date: Mon, 30 Jul 2012 03:46:04 -0400 (EDT)
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Note that there may be a bug in Xcode 4.4's handling of installing the 
command-line tools -- at least under OS X Lion (10.7.4): I did use the 
Xcode Preferences to install the command-line tools, but still in a 
Terminal session clang showed as the old version; and when I reopened 
Xcode and its Preferences, it did not indicate the command-line tools as 

So instead I went to,
selected "Command Line Tools (OS X Lion) for Xcode - July 2012", 
downloaded it, and installed it from the downloaded .dmg.

Now I do have the current version of the command-line tools installed 
(e.g., clang is version 4.0), and the Xcode app Preferences does show 
the tools as installed.

On 7/29/12 3:03 AM, Murray Eisenberg wrote:
> Just a possibility: did you also explicitly install the corresponding
> Xcode 4.4 command-line tools?  (You may do so from the Xcode Preferences
>   > Components pane
> On 7/28/12 2:39 AM, Chris wrote:
>> Dear all
>> I don't know if this posting is in the right group. If not please forgive me.
>> I know that updating the OS to mountain lion was a bit early usually I wait until the first update is available. However, in a weak moment I did update and now suffer the consequences.
>> Here is the problem:
>> Whenever I want to execute a compile function with the option CompilationTarget->"C" it produces the following error:
>> "CCompilerDriver`CreateLibrary::nocomp: A C compiler cannot be found on your system. Please consult the documentation to learn how to set up suitable compilers."
>> Thus, it seems that no C compiler is installed. However, I also updated XCode after the mountain lion update and therefore there is a compiler installed.
>> I appreciate any help in this matter. Thanks Chris

Murray Eisenberg                     murray at
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305

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