Hi Amit,

Could you try this pull request: https://github.com/pmodels/mpich/pull/5831/files?

You could apply the patch to release tarball, then run

```

python3 maint/gen_binding_c.py

```

to fix all the generated code.

Hui Zhou

qmpi: chop MPICH_API_PUBLIC from the definition by hzhou · Pull Request #5831 · pmodels/mpich

Pull Request Description MPICH_API_PUBLIC is accidentally leaked into definitions, which isn't allowed. Fixes #5829 [skip warnings] Author Checklist Provide Description Particularly focus on ...

github.com

From: Amit Ruhela via discuss <discuss@mpich.org>
Sent: Friday, February 4, 2022 5:34 PM
To: discuss@mpich.org <discuss@mpich.org>
Cc: Amit Ruhela <aruhela@tacc.utexas.edu>
Subject: [mpich-discuss] Compile issue with QMPI

Hi Mpich team,

I see the following issue with the latest 4.0 release of MPICH while adding QMPI support at configure time?

make[2]: Entering directory `/scratch1/05231/aruhela/libs/mpich/tar-mpich-4.0'

CC src/binding/c/attr/lib_libmpi_la-attr_delete.lo

src/binding/c/attr/attr_delete.c(63): error: attributes are not permitted in a function definition

int QMPI_Attr_delete(QMPI_Context context, int tool_id, MPI_Comm comm, int keyval) MPICH_API_PUBLIC

compilation aborted for src/binding/c/attr/attr_delete.c (code 2)

make[2]: *** [src/binding/c/attr/lib_libmpi_la-attr_delete.lo] Error 1

Any suggestions to resolve the build error?

Amit Ruhela, Ph.D.

HPC Software Tools Group

Texas Advanced Computing Center

The University of Texas at Austin

Email: aruhela@tacc.utexas.edu