You need to look in the configure.log you to see the exact configure/cmake command PETSc configure is using for each package it builds specific to that run of PETSc configure. We do not save them in some other place.
> On Jul 21, 2023, at 12:14 PM, robert.crock...@lamresearch.com wrote: > > Can I easily get the MPICH config PETSc uses? I’m poking through the repo and > not seeing anything related to config of downloaded packages. > Thanks, > Robert > > From: Barry Smith <bsm...@petsc.dev <mailto:bsm...@petsc.dev>> > Sent: Friday, July 21, 2023 11:35 AM > To: Crockett, Robert <robert.crock...@lamresearch.com > <mailto:robert.crock...@lamresearch.com>> > Cc: petsc-users@mcs.anl.gov <mailto:petsc-users@mcs.anl.gov> > Subject: Re: [petsc-users] MPICH C++ compilers when using PETSC --with-cxx=0 > > You don't often get email from bsm...@petsc.dev <mailto:bsm...@petsc.dev>. > Learn why this is important <https://aka.ms/LearnAboutSenderIdentification> > > > External Email: Do NOT reply, click on links, or open attachments unless you > recognize the sender and know the content is safe. If you believe this email > may be unsafe, please click on the “Report Phishing” button on the top right > of Outlook. > > > > > No, you will need to build MPICH yourself, stand-alone and then direct > PETSc's configure to use what you have built. > > Barry > > > > On Jul 21, 2023, at 11:11 AM, Robert Crockett via petsc-users > <petsc-users@mcs.anl.gov <mailto:petsc-users@mcs.anl.gov>> wrote: > > Hello, > I built PETSc with –with-cxx=0 in order to get around a likely Intel C++ > compiler bug. > However, the MPICH that also gets built by PETSc then picks up the wrong C++ > compiler; mpicxx -show indicates that it is using G++, while mpicc is > correctly using icc. > > Is there a way to get PETSc to pass the correct C++ compiler for the MPICH > build when using –with-cxx=0? I need to compile parts of my own program with > mpicxx/icpc. > Robert Crockett > Plasma Simulation Engineer | OCTO - Computational Products > P: 617.648.8349 M: 415.205.4567 > > LAM RESEARCH > 4650 Cushing Pkwy, Fremont CA 94538 USA > lamresearch.com <https://www.lamresearch.com/> > <image001.png> > > > LAM RESEARCH CONFIDENTIALITY NOTICE: This e-mail transmission, and any > documents, files, or previous e-mail messages attached to it, (collectively, > "E-mail Transmission") may be subject to one or more of the following based > on the associated sensitivity level: E-mail Transmission (i) contains > confidential information, (ii) is prohibited from distribution outside of > Lam, and/or (iii) is intended solely for and restricted to the specified > recipient(s). If you are not the intended recipient, or a person responsible > for delivering it to the intended recipient, you are hereby notified that any > disclosure, copying, distribution or use of any of the information contained > in or attached to this message is STRICTLY PROHIBITED. If you have received > this transmission in error, please immediately notify the sender and destroy > the original transmission and its attachments without reading them or saving > them to disk. Thank you. > > > Confidential – Limited Access and Use > > > Confidential – Limited Access and Use >
