https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67068
Bug ID: 67068
Summary: Ambiguous interfaces generated when including open mip
fortran header
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: mwglass at sandia dot gov
Target Milestone: ---
Using gfortran-5.2.0 with openmpi 1.8.7 on a Linux RHEL system.
When compiling a FORTRAN file with "-freal-4-real-8 -fdefault-double-8
-fdefault-real-8" and having the file include the mpif.h header from openmpi,
gfortran generates the following error:
mpif-sizeof.h:575:41: c 'mpi_sizeof_real64_r7' and 'mpi_sizeof_real32_r7' in
generic interface 'mpi_sizeof' at (1)
mpif-sizeof.h:1139:42: Error: Ambiguous interfaces 'pmpi_sizeof_real64_r7' and
'pmpi_sizeof_real32_r7' in generic interface 'pmpi_sizeof' at (1)
mpif-sizeof.h:575:41: Error: Ambiguous interfaces 'mpi_sizeof_real64_r7' and
'mpi_sizeof_real32_r7' in generic interface 'mpi_sizeof' at (1)
mpif-sizeof.h:1139:42: Error: Ambiguous interfaces 'pmpi_sizeof_real64_r7' and
'pmpi_sizeof_real32_r7' in generic interface 'pmpi_sizeof' at (1)
mpif-sizeof.h:575:41: Error: Ambiguous interfaces 'mpi_sizeof_real64_r7' and
'mpi_sizeof_real32_r7' in generic interface 'mpi_sizeof' at (1)
mpif-sizeof.h:1139:42: Error: Ambiguous interfaces 'pmpi_sizeof_real64_r7' and
'pmpi_sizeof_real32_r7' in generic interface 'pmpi_sizeof' at (1)
All previous versions of gfortran (4,7.x, 4.8.x, 4.9.x, 5.0, and 5.1) did not
do this. This also has never been a issue with the Intel fortran compile v14.x
and 15.x.
