MPICH does not currently provide the mpifort_abi library and compile wrapper. I’ve created an issue to note this and track progress on implementation for the next major release. Thanks for the question/report. https://github.com/pmodels/mpich/issues/7759

Ken

From: Alastair McKinstry via discuss <discuss@mpich.org>
Date: Tuesday, March 31, 2026 at 11:02 AM
To: discuss@mpich.org <discuss@mpich.org>
Cc: Alastair McKinstry <mckinstry@debian.org>
Subject: [mpich-discuss] MPI ABI in mpich 5.0*

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Hi,

Does mpich 5.0.0 support the full MPI ABI standard ? I see it creates 
mpicc_abi which links against libmpi_abi, but no equivalent mpifort_abi. 
Is this planned?

Best regards

Alastair

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Alastair McKinstry,
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