Are you using --download-mumps or pre-installed mumps? If using pre-installed - try --download-mumps.

If you still have issues - send us configure.log and make.log from the failed build.

Satish

On Mon, 30 Aug 2021, Sam Guo wrote:

> Dear PETSc dev team,
>    I am compiling petsc 3.15.3 and got following compiling error
> petsc/src/mat/impls/aij/mpi/mumps/mumps.c:52:31: error: missing binary
> operator before token "("
>    52 | #if PETSC_PKG_MUMPS_VERSION_GE(5,3,0)
>    Any idea what I did wrong?
>
> Thanks,
> Sam
>