[vtkusers] compilation with -fPIC necessary?

[Obada Mahdi]

Hi Sebastiaan!

Actually, you (almost) always need "-fPIC" when creating shared
libraries.  Do I understand you correctly that the "-fPIC" flag is
present when compiling VTK for shared libraries on AMD64, but not on the
EMT64?  That could be a problem.

However, that "libmpich.a" issue is not related to VTK:

On Thu, 16 Mar 2006, Sebastiaan wrote:
> Linking CXX shared library ../bin/libvtkParallel.so
> /usr/lib/gcc/x86_64-pc-linux-gnu/4.1.0/../../../../x86_64-pc-linux-gnu/bin/ld: 
> /usr/X11R6/lib64/libmpich.a(isend.o): relocation R_X86_64_32 against `a local 
> symbol'
> can not be used when making a shared object; recompile with -fPIC

Linking static libraries when creating a shared library just does not
work generally.  Any chance there is a dynamic version like
"libmpich.so" or so a available?  If not, you really need to recompile
the "mpich" library in order to create shared VTK libraries.


HTH,

Obada