Re: [Libmesh-users] Configure questions

[Leopold P. A. <le...@wo...>]

A Dijous 06 Novembre 2003 16:51, Benjamin S. Kirk va escriure:
> On most systems where PETSc is installed from source the environment
> variables PETSC_DIR and PETSC_ARCH are used to describe the
> installation.   For example, on my machine, the values for these
> variables are:
>
> hactar(4)$ echo $PETSC_DIR
> /usr/local/petsc/petsc-2.1.5
> hactar(5)$ echo $PETSC_ARCH
> linux
>
>
> so, for your system I think this should work:
>
> export PETSC_DIR=/usr
> export PETSC_ARCH=linux
>
> and re-run configure.
>
> We currently do not support a 'make install' target, so at the moment
> the --prefix=/usr command line argument will have no effect and may be
> omitted.
>
> Let me know if you have any more trouble.  I know of another user
> (right, Denis?) who has exactly your configuration working, so it is
> certainly possible.  I personally don't have access to a Debian machine
> with the PETSc packages installed, so my troubleshooting is a little
> limited...
>
> -Ben

Hi Ben,

thank's for the answer. Sadly I say htat I have some trouble.... :-(
lepalom@e01:~/Finite element/libmesh-0.4.1-rc2$ export PETSC_DIR=/usr
lepalom@e01:~/Finite element/libmesh-0.4.1-rc2$ export PETSC_ARCH=linux
lepalom@e01:~/Finite element/libmesh-0.4.1-rc2$ ./configure --enable-mpi 
--enable-petsc --enable-laspack

.....
checking for /usr/include/petsc.h... no
checking for /include/mpi.h... no
checking for /lib/libmpich.a... no
.....

The question is the configure checks for include/petsch.h, and no, in a debian 
system in general in the /usr/include/ there are the directories with the 
name of the directory and inside the headers, so your /usr/include/ has some 
kind or ordre. I think that it's necessary to change the aclocal.m4 in the 
line 505:

......
AC_DEFUN(CONFIGURE_PETSC,
[
  AC_CHECK_FILE($PETSC_DIR/include/petsc.h,
                PETSC_H_PATH=$PETSC_DIR/include/petsc.h)

  if (test -r $PETSC_DIR/include/petsc.h) ; then

... I think that this macro is not good. You think that all the tditributions 
of petsc put the petsc.h header in a include directory, and for example 
debian doens't.

So, probably is necessary to change this macro, and re-run autoconf to create 
the configure file. IMO. But I have tried to modify it and I have lost :-(

Leo



Leo