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Forum: Installation and Configuration
Re: Question Installation and example B1 (Denis)
Date: 01 Dec, 2015
From: Ben Morgan <Ben Morgan>

On Tue, 01 Dec 2015 09:06:40 GMT, Denis wrote:
> I have been struggling to get geant to work for the past week or so and
> I am hoping someone here can point to my errors. I have been following
> the instructions on this site for installing geant through the cmake gui
> to the letter. I am using the latest files available on the geant web
> page. I am using visual studio 2015 as my compiler. I am using windows
> 10. I'm going to start with the error I'm getting when I try to execute
> B1, then I will describe how I installed geant. I hope someone will see
> where I screwed up. Thanks in advance.
> When I run exampleB1.exe I get the following error:
> The program can't start because XXX.dll is missing from your computer.
> Try reinstalling the program to fix this problem.
> Where XXX stands for G4GMocren, G4RayTracer, G4Tree, and G4visHepRep.
> The error repeats for each missing dll file.
> I can only assume this means the program is looking in the wrong place
> for the dll files, but I cannot figure out where it's looking. So next I
> will describe how I installed geant. For the most part it is identical
> to the installation instructions on the geant site. So I will point out
> the important differences.
> First, I installed geant into a folder I named GEANT4 on my desktop. So
> all file locations can can be known as
> C:/..../desktop/GEANT4
> As far as the instructions are concerned, everything works perfectly up
> until I attempt to build example B1. When I set the path directory, I do
> exactly as instructed
> C:/.../Desktop/GEANT4/geant4_10_01_p02-install/lib/Geant4-10.1.2
> Now here is where I deviate from the instructions. The geant source
> package does not come with the precompiled libraries. So when I try to
> make B1, cmake gives me an error saying it cannot find a particular
> library in my install folder. So I take the precompiled libraries I
> downloaded from the web page and place them into
> ..../geant4_10_01_p02-install. Before I made these additions this folder
> did not have an include the folder, the lib folder had zero .lib files,
> and the bin folder had zero G4 dll files. After I do this, cmake runs
> without a hitch. But the executable it creates gives me the error I
> described above. Where have I gone wrong? Or at the very least, where is
> B1 trying to look for these dll files? I have also tried building B1
> using debug mode as well. It still did not work.

DLLs will be searched for under a sequence of standard locations. It should be sufficient to add the directory holding the Geant4 DLLs to the Windows PATH environment variable, as documented in the Installation Guide.

The C:/.../Desktop/GEANT4/geant4_10_01_p02-install/lib/Geant4-10.1.2 directory is where the Geant4 CMake config files are located. That being the case, the DLLs should be in C:/.../Desktop/GEANT4/geant4_10_01_p02-install/bin.



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