From SOFAWiki

Using CGAL

CGAL is a C++ library specialized on geometric computations.

Compiling CGAL

CGAL is a big project, therefore it is not included natively into SOFA extlibs' directory. Here is the way to compile it for SOFA.

Dependencies

(http://www.cgal.org/Manual/3.6/doc_html/installation_manual/Chapter_installation_manual.html)

Before you compile CGAL, you need additional dependencies/tools :

1. CMake
2. Boost
3. GMP/MPFR
4. Qt
5. METIS/TAUCS
6. BLAS/LAPACKS

Windows : Use installers from software's site for CMake, Boost. As for GMP/MPFR, the most easy way is to get CGAL binaries package, and get precompiled libs and includes of GMP/MPFR. Then add into the INCLUDE environment variable the directory where these files are located.

Linux : Use your distribution's package system to install those libraries

MacOS X : Use MacPorts to install cmake, boost, gmp, mpfr and add the installation path into your sofa-local.cfg, by default it is the following:

macx {
	INCLUDEPATH += /opt/local/include
	LIBS += -L/opt/local/lib
}

Note also that there is a bug with the installation of Boost on Snow Leopard in 32 bit using MacPorts (http://trac.macports.org/ticket/23796). Install Boost 1.42 manually and add the path into your sofa-local.cfg.

And finally, enable TAUCS and MENTIS in Sofa.cfg (and compile sofa with those).

Compilation

<SOFA_DIR> is the directory where Sofa is installed.

1. Download CGAL on its Gforge files' part : https://gforge.inria.fr/frs/?group_id=52
2. Extract into <SOFA_DIR>/extlibs
3. Do a symbolic link (or rename) "CGAL-<Version>" for "CGAL" (you should have <SOFA_DIR>/extlibs/CGAL)
4. Change dir into it

Examples and Demos (Linux Only)

Type:

SOFA_DIR="/media/data/Sofa/" cmake . -DWITH_examples=ON -DWITH_demos=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$SOFA_DIR/extlibs/  -DTAUCS_INCLUDE_DIR=$SOFA_DIR/extlibs/taucs/src/ \ 
-DTAUCS_LIBRARIES=$SOFA_DIR/lib/linux/libtaucs.so -DMETIS_LIBRARIES=$SOFA_DIR/lib/linux/libmetis.so -DCMAKE_CXX_FLAGS="-I $SOFA_DIR/extlibs/taucs/build/linux/"

(Change the cmake variable CMAKE_BUILD_TYPE for Debug if you want to compile in debug mode)

If everything is correct (no error), type after that :

make
make examples
make demos

Libraries only

In order to compile CGAL, type the following instructions from <SOFA_DIR>/extlibs/CGAL:

cmake .

If everything is correct (no error), then type:

for Linux/MacOS X:

make

or for Windows:

nmake

Exception If you want to compile CGAL in 32 bit on Snow Leopard type:

cmake . -DCGAL_CXX_FLAGS=-m32 -DCGAL_MODULE_LINKER_FLAGS=-m32 -DCGAL_SHARED_LINKER_FLAGS=-m32 -DCGAL_EXE_LINKER_FLAGS=-m32

then

make

Install libs in Sofa

When the compilation has finished without any problem, copy the libs into Sofa's lib directory

Linux

cp lib/libCGAL* <SOFA_DIR>/lib/linux/

MacOS X

cp lib/libCGAL* <SOFA_DIR>/lib/macx/

Windows

cp lib/libCGAL* <SOFA_DIR>/lib/win32/

Compile CGALPlugin in Sofa

The last step is to uncomment the following line in your sofa-local.cfg:

DEFINES += SOFA_HAVE_CGAL

Then regenerate your Makefiles (using the provided script for your OS) and compile SOFA.

Note about Boost library

1. If you are using Boost 1.40 and earlier versions, the following default line in sofa.cfg is correct and CGALPlugin should compile.

SOFA_EXT_LIBS *= -lgmp -lmpfr -lboost_thread-mt

2. However, if you are using Boost 1.41 or 1.42, name convention has changed. Please modify the line above to:

SOFA_EXT_LIBS *= -lgmp -lmpfr -lboost_thread

3. Boost 1.43 has not been tested with SOFA (4th of June 2010).