On Fri, 18 Aug 2006, Steven A. DuChene wrote:
I am attempting to build OpenMPI-1.1 on a RHEL4u2 system that has
the standard gfortran install as part of the distro and with a self installed
recent version of g95 from g95.org but when I use the FC flag to
configure to tell it where to find the g95 executable I get a message
during the configure run of
*** Fortran 90/95 compiler
checking whether we are using the GNU Fortran compiler... yes
checking whether /app/g95-newer/g95-install/bin/x86_64-unknown-linux-gnu-g95
accepts -g... yes
checking if Fortran compiler works... yes
checking whether gfortran and
/app/g95-newer/g95-install/bin/x86_64-unknown-linux-gnu-g95 compilers are
compatible... no
configure: WARNING: *** Fortran 77 and Fortran 90 compilers are not link
compatible
configure: WARNING: *** Disabling MPI Fortran 90/95 bindings
checking if Fortran 90 compiler supports LOGICAL... skipped
checking if Fortran 90 compiler supports INTEGER... skipped
checking if Fortran 90 compiler supports INTEGER*1... skipped
checking if Fortran 90 compiler supports INTEGER*2... skipped
checking if Fortran 90 compiler supports INTEGER*4... skipped
checking if Fortran 90 compiler supports INTEGER*8... skipped
checking if Fortran 90 compiler supports INTEGER*16... skipped
checking if Fortran 90 compiler supports REAL... skipped
checking if Fortran 90 compiler supports REAL*4... skipped
checking if Fortran 90 compiler supports REAL*8... skipped
checking if Fortran 90 compiler supports REAL*16... skipped
checking if Fortran 90 compiler supports DOUBLE PRECISION... skipped
checking if Fortran 90 compiler supports COMPLEX... skipped
checking if Fortran 90 compiler supports COMPLEX*8... skipped
checking if Fortran 90 compiler supports COMPLEX*16... skipped
checking if Fortran 90 compiler supports COMPLEX*32... skipped
checking if Fortran 90 compiler supports DOUBLE COMPLEX... skipped
I am not specifying any particular FCFLAGS but from searching through the
mailing
lists I am pretty sure I should be but I just don't know what exactly.
Any info on this anywhere?
Compiler incompatibility is hinted at in this FAQ entry:
http://www.open-mpi.org/faq/?category=sysadmin#multiple-installs
Try setting the F77 environment variable to use g95 for Fortran 77 compiler as
well.
If you don't need F77 bindings, then supply '--disable-f77' to configure and it
should build fine.
Hugh
