[MITgcm-support] teething.. genmake2 with gfortran

[Martin Losch]

Hi Jill,

the error message
>> Error: The command "ln -s" failed -- please specify a working soft- 
>> link
>>   command in the optfile.
points to the unix command "ln" which is used to soft-link the source  
code into the build directory.
Either the command does not work properly on you system (which I find  
hard to believe, because so many things on the system level depend on  
it) or there is a problem with write permission in you working/build  
directory. You'll probably find more error messages in the file  
"genmake_warnings" or so, which is generated by genmake2.

Speaking of the build directory, it appears that you are trying to  
build in the tools/build_options directory which is not a good idea  
(although possible in principle).
For a start try to follow the instruction in the documentation, for  
example here:
http://mitgcm.org/pelican/online_documents/node92.html
although I would suggest using a specific build directory. I would do  
this (modifying the example in the above page):

cd verificatioin/exp2
mkdir build (I guess it even exists)
cd build
../../../tools/genmake2 -mods ../code

If you are on an "off-the-shelf" linux box this will give you a  
Makefile file for the g77, then
make CLEAN
make depend
make

will give you the executable (if everything goes well). One that  
works, remove and repeat everything for gfortran (provided that you  
have gfortran installed on your system):
../../../tools/genmake2 -mods ../code -of ../../../tools/ 
build_options/linux_ia32_gfortran
the rest is the same.

Martin

PS. I can't believe that there are sysadmin out there that are more  
restrictive that the AWI guys (o:
Vom Regen in die Traufe?

On Jun 29, 2006, at 8:03 AM, jschwarz at awi-bremerhaven.de wrote:

> Hi all,
>
> thanks for the first tip regarding cvs with an IP address - cvs  
> still won't work on this network, but thanks anyway.
>
> I now have a problem running genmake2: I get the feeling it's  
> really trivial but can't find the problem..
> to avoid confusion, here is the exact command issued and resulting  
> message:
>
> _______________________________________________________
> tasman:/media/FHD-2PRO/MITgcm/tools/build_options # ../../tools/ 
> genmake2 -mods=../code -of ../../tools/build_options/ 
> linux_ia32_gfortran
>
> GENMAKE :
>
> A program for GENerating MAKEfiles for the MITgcm project.  For a
> quick list of options, use "genmake -h" or for more detail see:
>
>   http://mitgcm.org/devel_HOWTO/
>
> ===  Processing options files and arguments  ===
>   getting local config information:  none found
> Warning:  ROOTDIR was not specified but there appears to be a copy  
> of MITgcm at "../.." so we'll try it.
>   getting OPTFILE information:
>     using OPTFILE="../../tools/build_options/linux_ia32_gfortran"
>   getting AD_OPTFILE information:
>     using AD_OPTFILE="../../tools/adjoint_options/adjoint_default"
> ln: creating symbolic link `genmake_tlink' to `genmake_test_ln':  
> Operation not permitted
>
> Error: The command "ln -s" failed -- please specify a working soft- 
> link
>   command in the optfile.
> ________________________________________________________________
>
> this was using the optfile for gfortran.  In case the optfile was a  
> problem, i also tried without the optfile to see if genmake could  
> find it's own way around, and got:
>
> ---------------------------------------------------------------------- 
> ----------------------------------------------------------
> tasman:/media/FHD-2PRO/MITgcm/verification/exp2 # ../../tools/ 
> genmake2 -mods=../code -of
>
> GENMAKE :
>
> A program for GENerating MAKEfiles for the MITgcm project.  For a
> quick list of options, use "genmake -h" or for more detail see:
>
>   http://mitgcm.org/devel_HOWTO/
>
> ===  Processing options files and arguments  ===
>   getting local config information:  none found
> Warning:  ROOTDIR was not specified but there appears to be a copy  
> of MITgcm at "../.." so we'll try it.
>   getting OPTFILE information:
> Warning: no OPTFILE specified so we'll look for possible settings
>
> ===  Searching for possible settings for OPTFILE  ===
>   The platform appears to be:  linux_ia32
> ln: creating symbolic link `link' to `./test': Operation not permitted
> Error: "ln -s" does not appear to work on this system!
>   For help, please contact <MITgcm-support at mitgcm.org>.
> ______________________________________________________________
>
> ln should work, since 'which ln' and 'ln --help' give information.   
> There shouldn't be a problem
> with permissions as i'm currently running as root (i know it's bad  
> - long story):  ./test does exist in the
> /verification/exp2 directory and it's write permissions are rwxr-xr-x.
> None of the mitgcm files have been changed except for renaming the  
> results files for exp2.
>
> Hopefully some kind soul will recognise this as a simple thing to  
> remedy!
> As an aside, where should ROOTFILE be specified?
>
> In hope,
> jill.
> .......
> Dr Jill N Schwarz
> Alfred Wegener Institute for Polar & Marine Research
> Postfach 12 0161
> 27515 Bremerhaven
> Germany
> tel:  +49 471 4831 1714
> fax: +49 471 4831 1797
> jschwarz at awi-bremerhaven.de
> -------> Visiting National Institute for Water & Atmospheric  
> Research, Wellington, NZ, from
> 19th June to 30th September, 2006:  tel +64 3 386 0914
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
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