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Forum: Installation and Configuration
Re: None Problem during install
Date: 18 May, 2010
From: Ben Morgan <Ben Morgan>

Hi Paul,

On Mon, 17 May 2010 19:15:03 GMT, paulmcg wrote:
> Hi I'm trying to install Geant4-9-3-p01 on Ubuntu 10.04.
> 
> After doing the initial ./Configure -build stage I get the following
> output. There's quite a few errors and I'm concerned that the toolkit
> won't work.
> 
> The g4makelog is attached. But some of the error messages produced is
> here:
> 
> Compiling G4UIcontrolMessenger.cc ... src/G4UIcontrolMessenger.cc: In
> member function �virtual void
> G4UIcontrolMessenger::SetNewValue(G4UIcommand*, G4String)�:
> src/G4UIcontrolMessenger.cc:234: warning: ignoring return value of �int
> system(const char*)�, declared with ... Compiling G4OpticalSurface.cc
> ... src/G4OpticalSurface.cc: In member function �void

Looking at the Make log, all of the warnings are related to one thing - some parts of the Geant4 code ignore return codes from C functions. GNU C provides "attributes" that developers can apply to functions to warn when return values are ignored, e.g. if the return value is a success/error code (see the GCC manual if you want the gory details). As the libraries look to have been built successfully - there are no errors that I can see, you shouldn't have problems running the toolkit.

Cheers,

Ben.

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