[Spice_discussion] Compiling SPICE software with gfortran

[William Thompson]

Folks:

I'm not sure this is a SPICE issue itself, but I thought somebody on this list 
might know the answer.  We're in the process of converting over our Mac servers 
to a newer version of OSX, and realized that we needed to replace or recompile 
some of our software because they were originally compiled for the PPC platform, 
which is no longer supported.

The first issue we ran into was the SPICE utility cksmrg.  I downloaded the 
precompiled Mac/Intel version from the NAIF website, but quickly realized that 
we needed to also install gfortran for it to find the necessary libraries.

We also have a small FORTRAN program that I wrote long ago which works along 
with cksmrg to produce some of our pointing data files.  Most of our SPICE 
software is written in IDL, but this small part had to be written in FORTRAN 
because it calls some of the few SPICE routines that weren't ported over to IDL 
(and I'm an old guy who's more comfortable with FORTRAN than C).

We quickly realized that it wasn't enough to install gfortran, but we also had 
to install Xcode.  The command used to compile the program was

gfortran -C -o cksmooth cksmooth.f \
         /service/stereo3/stereo/software/spice_fortran/i386/lib/support.a \
         /service/stereo3/stereo/software/spice_fortran/i386/lib/spicelib.a

However, this produces the following error message.

ld: library not found for -lcrt1.10.6.o
collect2: error: ld returned 1 exit status

Does anybody know what the problem might be?  I don't think it has anything to 
do with the SPICE libraries, because I get the same error with another old 
program that's independent of SPICE.

Thanks,

Bill Thompson

-- 
William Thompson
NASA Goddard Space Flight Center
Code 671
Greenbelt, MD  20771
USA

301-286-2040
William.T.Thompson at nasa.gov