From: Tristan Croll (
Date: Wed Jan 13 2016 - 13:31:47 CST

Ah - that makes things easy then!



From: John Stone <>
Sent: Thursday, 14 January 2016 5:29 AM
To: Tristan Croll
Subject: Re: vmd-l: Re: -fpascal-strings flag when compiling with TDCONNEXION option

  Sorry for the late reply, I was traveling the last several weeks over
the holidays and I'm finally catching up on emails.

The TDCONNEXION option is not for use with Linux, it is specific to MacOS X,
There are no special flags required to get Spacenavigator support on Unix/Linux,
as it is handled as part of the standard X-windows event handling mechanism
inside of the VMD OpenGL display code with some code that detects a few
special XAtom structures that are present at runtime when there's a

So, remove that option from your build, because it has nothing to do with
the Linux versions of VMD.

  John Stone

On Wed, Jan 06, 2016 at 07:58:40AM +0000, Tristan Croll wrote:
> If I go ahead and remove that flag, then the compilation crashes out at
> the linking stage with:
> g++: error: 3DconnexionClient: No such file or directory
> g++: error: unrecognized command line option `-weak_framework'
> make: *** [vmd_LINUXAMD64] Error 1
> ---------------------------------------------------------------------------
> From: Tristan Croll
> Sent: Wednesday, 6 January 2016 5:50 PM
> To:
> Subject: -fpascal-strings flag when compiling with TDCONNEXION option
> Hi all,
> If I add TDCONNEXION to configure.options when compiling VMD 1.9.3a7, it
> adds -fpascal-strings to the INCDIRS in the Makefile. At least on the
> Ubuntu system I'm currently on, this immediately leads to a crash:
> Compiling OpenGLExtensions.C --> OpenGLExtensions.o ...
> g++: error: unrecognized command line option `-fpascal-strings'
> make: *** [OpenGLExtensions.o] Error 1
> From the limited information I could find on this flag from Google, I
> gather it's only necessary for MacOS. Is it safe to just remove it?
> Thanks,
> Tristan

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