[petsc-users] configuration error

[Satish Balay]

The compiler library detection code is a bit messy. Its there to help
with interlanguage linking.

One workarround [to such failures] is to tell configure not to guess,
and specify the relavent info.

For eg:

balay at ipro^~/petsc(master) $ ./configure --download-mpich --download-hypre CC=clang CXX=clang++ FC=gfortran --with-clib-autodetect=0 --with-fortranlib-autodetect=0 --with-cxxlib-autodetect=0 LIBS='-L/usr/local/Cellar/gcc/7.2.0/lib/gcc/7/gcc/x86_64-apple-darwin17.0.0/7.2.0/../../.. -lgfortran -lc++'

Satish


On Mon, 30 Oct 2017, Kong, Fande wrote:

> We had exactly the same issue when upgraded compilers.  I guess this is
> somehow related to gfortran.  A simple way to work around for us is to
> change* if with_rpath*: to * if False *at line 54 of
> config/BuildSystem/config/libraries.py.
> 
> Not sure if it works for you.
> 
> Fande,
> 
> 
> 
> 
> On Mon, Oct 30, 2017 at 10:14 AM, Manav Bhatia <bhatiamanav at gmail.com>
> wrote:
> 
> > Hi,
> >
> >   I am trying to install pets 3.8 on a new MacBook machine with OS 10.13.
> > I have installed openmpi from macports and I am getting this error on
> > configuration. Attached is also the configure.log file.
> >
> >   I am not sure how to proceed with this. Any advice will be greatly
> > appreciated!
> >
> > Regards,
> > Manav
> >
> > ============================================================
> > ===================
> >              Configuring PETSc to compile on your system
> >
> > ============================================================
> > ===================
> > ===============================================================================
> >
> >
> >   ***** WARNING: Using default optimization C flags -g -O3
> >
> >
> >     You might consider manually setting optimal optimization flags for your
> > system with
> >
> >       COPTFLAGS="optimization flags" see config/examples/arch-*-opt.py for
> > examples
> >
> >   ===============================================================================
> >
> >
> > ===============================================================================
> >
> >
> >   ***** WARNING: Using default C++ optimization flags -g -O3
> >
> >
> >     You might consider manually setting optimal optimization flags for your
> > system with
> >
> >       CXXOPTFLAGS="optimization flags" see config/examples/arch-*-opt.py
> > for examples
> >
> >     ===============================================================================
> >
> >
> > ===============================================================================
> >
> >
> >   ***** WARNING: Using default FORTRAN optimization flags -g -O
> >
> >
> >     You might consider manually setting optimal optimization flags for your
> > system with
> >
> >       FOPTFLAGS="optimization flags" see config/examples/arch-*-opt.py for
> > examples
> >
> >   ===============================================================================
> >
> >
> > ===============================================================================
> >
> >
> >             WARNING! Compiling PETSc with no debugging, this should
> >
> >
> >                     only be done for timing and production runs. All
> > development should
> >
> >                             be done when configured using
> > --with-debugging=1
> >
> >                           ==============================
> > =================================================
> >
> >                                                   TESTING: checkCLibraries
> > from config.compilers(config/BuildSystem/config/compilers.py:171)
> >
> >
> > ************************************************************
> > *******************
> >          UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log for
> > details):
> > ------------------------------------------------------------
> > -------------------
> > C libraries cannot directly be used from Fortran
> > ************************************************************
> > *******************
> >
> >
> >
> >
> >
> >
>