undefined reference to `history_mp_fincllonlat_'

[pasha_@ngs_ru]

Hi All.

I'm a novice CAM user and I'm trying to get CAM3 compiled on Itanium. While linking I receive *undefined reference to `history_mp_fincllonlat_'* from intel fortran 8.1. (Package ID: l_fce_pc_8.1.023).

More precisely:

runtime_opts.o(.text+0xa3c9): In function `preset':
~/work/cam1/models/atm/cam/src/control/runtime_opts.F90:1609: undefined reference to `history_mp_fincllonlat_'
make: *** [~/work/cam1/models/atm/cam/bld/camrun_omp_mpi/cam] Error 1


'nm' tells me there is no history_mp_fincllonlat_ in the history.o file.
This is quite a strange situation because in history.F90 I found

character(len=10) :: fincl(pflds,ptapes)
character(len=max_chars) :: fincllonlat(pflds,ptapes)
character(len=8 ) :: fexcl(pflds,ptapes)
character(len=10) :: fhstpr(pflds,ptapes)
character(len=10) :: fwrtpr(pflds,ptapes)

What is more strange I have to arrays

character(len=10) :: fincl(pflds,ptapes)
character(len=max_chars) :: fincllonlat(pflds,ptapes)

defined almost the same way. Both have equivalence statement in the same file
...
character(len=max_chars) fincl1lonlat(pflds)
equivalence (fincl1lonlat,fincllonlat(1,1))
...
character*10 fincl1(pflds)
equivalence (fincl1,fincl(1,1))
...

but one array is! defined and the other is not:
> nm history.o | grep! fincl < br />00000000006afddc C history_mp_fincl_
00000000006f8292 C history_mp_fincl1lonlat_

I don't know, maybe this is a problem with *equivalence* or something. Does anyone know the correct answer? :)
Thanx!

 

[jmccaa]

Yes, I think you are correct about equivalence being the problem -- this is not the first time the Intel compiler has has trouble in this regard.

The equivalence statements are a legacy of fortran77 and really should be removed from the code, but it hasn't yet risen high enough on the priority list. Other compilers seems to handle them fine.

Your choices in the mean time are to replace the equivalence statements yourself or search for patched version of the Intel compiler -- they've released patches for the x86 compiler that work with CAM, but I don't know about Itanium compiler.

Jim

 

[ning_wang@intel_com]

why did you use a compiler on Itanium which is used for Intel EM64T?
please type "ifort -V" to check correction of compiler version.

l_fce_pc_8.1.023 is for Intel EM64T not Itanium .

 

[pasha_@ngs_ru]

That was my mistake in the first message: I'm using an EM64T cluster.

I finally managed to eliminate the problem. I specified all the names used in the equivalence statement (both of the equivalence pair) in the "use, only statement" ("preset" function, runtime_opts.F90)