Public bug reported:
Write a file like this called main.f90:
program mpitest
implicit none
include 'mpif.h'
logical :: flag
integer :: ier
call MPI_Init(ier)
if (ier /= 0) then
print *, 'Unable to initialize MPI: ', ier
stop 1
endif
call MPI_Initialized(flag, ier)
if (ier /= 0) then
print *, 'Unable to check MPI initialization state: ', ier
stop 1
endif
call MPI_Finalize(ier)
if (ier /= 0) then
print *, 'Unable to finalize MPI: ', ier
stop 1
endif
end program mpitest
Compile it like this:
gfortran -I. -I/usr/lib/x86_64-linux-gnu/openmpi/include
-I/usr/lib/x86_64-linux-gnu/openmpi/include/openmpi
-I/usr/lib/x86_64-linux-gnu/openmpi/lib -Wall -O0 -g -pthread -o main.f90.o -c
main.f90
gfortran -o exef main.f90.o -L/usr/lib/x86_64-linux-gnu/openmpi/lib
-L/usr//lib -Wl,--start-group -lmpi_usempif08 -lmpi_usempi_ignore_tkr
-lmpi_mpifh -lmpi -Wl,--end-group
The compile step will work but linking will fail with this error
message:
/usr/bin/ld: main.f90.o(.debug_info+0xd8): unresolvable R_X86_64_64 relocation
against symbol `mpi_fortran_argv_null_'
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
The same code compiles and links fine on Debian stable i386.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gfortran 4:7.2.0-1ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: amd64
CurrentDesktop: KDE
Date: Wed Oct 25 21:49:05 2017
InstallationDate: Installed on 2017-10-14 (10 days ago)
InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: gcc-defaults
UpgradeStatus: Upgraded to artful on 2017-10-25 (0 days ago)
** Affects: gcc-defaults (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful
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https://bugs.launchpad.net/bugs/1727474
Title:
gfortran fails to link openmpi programs
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