[Gmsh] Compiling Gmsh with opencascade

[Vun, Simon (Contractor)]

Hi David and gmsh users,

I've managed to build gmsh with opencascade and have attached my "modified" version of the readme.occ supplied with gmsh docs.
I've supplied details of my machine and software I used. 
I am happy to say that I have been able to import step and iges files with it.
 
Please have a look and let me know if I've done something wrong, particularly adding -pthread to the CXXFLAGS.

Cheers,

Simon.

-----Original Message-----
From: David Colignon [mailto:David.Colignon at ulg.ac.be] 
Sent: Wednesday, 5 March 2008 8:34 PM
To: Vun, Simon (Contractor)
Cc: gmsh at geuz.org
Subject: Re: [Gmsh] Compiling Gmsh with opencascade

Hi Simon,

seems like with the dynamic occ libs on linux you might need link with the pthread library. Can you try adding -lpthread to the GMSH_LIBS variable in the "gmsh/variables" file ?

Cheers,

Dave


--
David Colignon, Ph.D.
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Vun, Simon (Contractor) wrote:
> Hi there,
> 
> I've just started to use gmsh as my meshing tool for openfoam CFD.  
> Currently I'm trying to install gmsh on my 32bit intel Suse10.1 machine.
> 
> I followed the readme for occ and was successful with the installation 
> of opencascade.  However I'm currently trying to compile gmsh with 
> opencascade and I've hit a wall.
> 
> I configure opencascade using the following
> 
> ./configure --enable-occ --with-occ-prefix=/usr/local/OpenCASCADE6.2.0/ 
> (since OCC is located in this dir).
> 
> When I try to "make" gmsh I get the following error;
> 
>  make[1]: Leaving directory `/usr/local/gmsh-2.1.1/contrib/ANN'
> make[1]: Entering directory `/usr/local/gmsh-2.1.1/contrib/Netgen'
> make[1]: `../../lib/libGmshNetgen.a' is up to date.
> make[1]: Leaving directory `/usr/local/gmsh-2.1.1/contrib/Netgen'
> make[1]: Entering directory `/usr/local/gmsh-2.1.1/contrib/MathEval'
> make[1]: `../../lib/libGmshMathEval.a' is up to date.
> make[1]: Leaving directory `/usr/local/gmsh-2.1.1/contrib/MathEval'
> g++ -g -O2 -o bin/gmsh -Llib -lGmshFltk -lGmshParser -lGmshGraphics 
> -lGmshPlugin -lGmshMesh -lGmshGeo -lGmshPost
> -lGmshCommon -lGmshDataStr -lGmshNumeric -lGmshParallel 
> -lGmshNativeFileChooser -L/usr/local/lib -L/usr/X11R6/lib
> -lfltk_images -lpng -lz -lfltk_jpeg -lfltk_gl -lGLU -lGL -lfltk -lm 
> -lXext -lX11 -lpng -lGmshANN -lGmshNetgen -lGmshMathEval
> 
> -lgsl -lgslcblas -L/usr/local/OpenCASCADE6.2.0//lib -lTKSTEP -lTKSTEP209 
> -lTKSTEPAttr -lTKSTEPBase -lTKIGES -lTKXSBase -lTKOffset
> 
>  -lTKFeat -lTKFillet -lTKBool -lTKShHealing -lTKMesh -lTKHLR -lTKBO 
> -lTKPrim -lTKTopAlgo -lTKGeomAlgo -lTKBRep -lTKGeomBase -lTKG3d
> 
> -lTKG2d -lTKAdvTools -lTKMath -lTKernel -lhdf5 -lz -lm
> /usr/local/lib/libTKernel.so: undefined reference to `pthread_create'
> /usr/local/lib/libTKernel.so: undefined reference to `pthread_detach'
> /usr/local/lib/libTKernel.so: undefined reference to 
> `pthread_mutex_trylock'
> /usr/local/lib/libTKernel.so: undefined reference to `pthread_join'
> collect2: ld returned 1 exit status
> make: *** [link] Error 1
> 
> I've made sure the OCC libs and inc dirs are accessible using symbolic 
> links in OpenCASCADE6.2.0 dir following the thread 
> ___http://www.geuz.org/pipermail/gmsh/2007/002498.html_
> 
> I'm not sure what to make of this error so if anyone could help I would 
> really appreciate it.
> 
> I'm trying to compile gmsh-2.1.1 with OpenCascade 6.2.0 using gcc4.1.2.
> 
> Thanks in advance and I can't wait try the mesher.
> 
> Simon.
> 
> P.S In the spirit of opensource, when I successfully install gmsh I'll 
> happily share my installation process. 
> 
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