[petsc-users] Installation problems on IBM machine

[Samar Khatiwala]

Hello,

I'm having trouble installing PETSc on an IBM machine (power6). After some trial and error I managed to configure but the 'make all' step fails with: 

==========================================
Building PETSc using CMake with 21 build threads
==========================================
make: 1254-002 Cannot find a rule to create target 21 from dependencies.
Stop.
make: 1254-004 The error code from the last command is 2.
…

Please see attached logs. I configured with:

config/configure.py --with-cc=mpcc --with-cxx=mpCC --with-clanguage=c --with-fc=mpxlf90 --with-debugging=0 FFLAGS="-qextname" --with-batch=1 --known-mpi-shared-libraries=0 --with-blas-lapack-lib="[libessl.a]"

What is odd is that this worked once but 'make test' failed because of a missing LAPACK routine in ESSL. I reconfigured with 
--with-blas-lib=libessl.a --with-lapack-lib=/sw/aix53/lapack-3.2.0/lib/liblapack.a but then 'make all' failed with the same error as I now 
get *even after* reverting to the original (above) configure options. I've now tried this several times with a fresh copy of PETSc to no 
avail.

Any help would be appreciated. Thanks very much!

Samar



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