Re: [AMBER] compile ambertools on mac

From: Mengjuei Hsieh <>
Date: Thu, 15 Jul 2010 16:11:19 -0700


I actually have some questions for Jorgen, hopefully you can resolve
the problem very soon.

After I updated the xcode on my old tiger machine, the fftw symbol
problem persists, so it's not that simple, but I found out I had
installed an version of gfortran in /usr/local, so I removed it and
started to rebuild my macports configuration in hope to get rid of
linking problem.

Here are questions that might help:
  1. make sure you are using the compilers you thought you have been using:
      $ which gcc
      $ which gfortran
  2. If you have previous gcc/gfortran/g77 in your /usr/local/bin, but
you're using macport's GNU compilers, please move them away:
      sudo mv /usr/local /user/local.backup

I'll update the status after finishing up the macports thingy.

On Thu, Jul 15, 2010 at 11:22 AM, Mengjuei Hsieh <> wrote:
> I did encounter this problem of fftw objects having no symbols on a
> hodgepodge system with old Tiger and some untesed software on it.
> It might just require a xcode update to make the problem go away, none
> the less I will keep you guys posted whenever possible.
> On Tue, Jul 13, 2010 at 5:22 AM, Jorgen Simonsen <> wrote:
>> I deleted the suggested files and make clean - switch to the compiler sudo
>> gcc_select gcc42 and reconfigured. The files in the $AMBERHOME/lib are
>> regenerated upon compilation but it still terminates with the error
>> Undefined symbols and then exists compilation
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Received on Thu Jul 15 2010 - 16:30:03 PDT
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