FreeFem++

====== Installation ======

  * installé dans /local/apps/freefem++-3.13-2

====== exemple ======

<code>

[henry@octopus ~]$ /local/apps/freefem++-3.13-2/bin/FreeFem++ /local/apps/src/freefem++-3.13-2/examples++-tutorial/LaplaceP1.edp 
 EXEC of the plot  : ffglut
-- FreeFem++ v  3.130002 (date Mar 28 jui 2011 09:22:37 CEST)
 Load: lg_fem lg_mesh lg_mesh3 eigenvalue 
    1 :  mesh Th=square(10,10);
    2 :  fespace Vh(Th,P1);     // P1 FE space
    3 :  Vh uh,vh;              // unkown and test function. 
    4 :  func f=1;                 //  right hand side function 
    5 :  func g=0;                 //  boundary condition function
    6 :  
    7 :  problem laplace(uh,vh,solver=GMRES,tgv=1e5) =                    //  definion of  the problem 
    8 :     int2d(Th)( dx(uh)*dx(vh) + dy(uh)*dy(vh) ) //  bilinear form
    9 :   + int1d(Th,1)( uh*vh) 
   10 :   - int1d(Th,1)( vh)
   11 :   - int2d(Th)( f*vh )                          //  linear form
   12 :   + on(2,3,4,uh=g) ;                      //  boundary condition form
   13 : 
   14 :   laplace; // solve the problem plot(uh); // to see the result
   15 :   plot(uh,ps="LaplaceP1.eps",value=true);
   16 :  sizestack + 1024 =1896  ( 872 )

  -- Square mesh : nb vertices  =121 ,  nb triangles = 200 ,  nb boundary edges 40
GMRES converges: 27 1.116e-07 0.154071 7.24338e-07 < 1e-06
  -- Solve : 
          min 1.62405e-12  max 0.361312
times: compile 0s, execution 0s,  mpirank:0
Err ReadOnePlot 1
 CodeAlloc : nb ptr  2299,  size :305528 mpirank: 0
Bien: On a fini Normalement
</code>

====== compilation ======
<code>
[devel1@octopus freefem++-3.13-2]$ pwd
/local/apps/src/freefem++-3.13-2

./configure --prefix=/local/apps/freefem++-3.13-2 --enable-m64 --with-x --enable-download | & tee CONFIG.LOG

make | & tee MAKE.LOG

make install | & tee INSTALL.LOG
</code>

====== Erreurs ======


<code>
g++ -shared -fPIC -g -m64 -fPIC -DNDEBUG -O3 -mmmx -msse -msse2 -DDRAWING -DBAMG_LONG_LONG -DNCHECKPTR -fPIC 'fflapack.o' -o fflapack.so -llapack -lblas
/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/liblapack.a(dgeev.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/liblapack.a: could not read symbols: Bad value
collect2: ld returned 1 exit status
</code>