[MITgcm-support] RE: MITgcm

[Jane Jimeian]

i'm using the IBM xlf compilers.  i believe cpp is GNU (installed development pkg Xcode).
i had to fix the line that cpp puts in the beginning of the file:

        #pragma GCC set_debug_pwd 

by changing the Makefile to include:

        # Fix #pragma line
        SED = | sed -e s/\#pragma/C\#pragma/
        
        [snip]
        
        .F.f:
                $(CPP) $(DEFINES) $(INCLUDES) $(SED) > $@

i think the line (#pragma...) that cpp puts is new thing with Xcode for Panther (v10.3)

http://developer.apple.com/documentation/ReleaseNotes/DeveloperTools/GCC3.html

        The GCC 3.3 preprocessor inserts a new pragma, #pragma GCC  set_debug_pwd,
        as part of the new Distributed Builds feature. (See below.) This may surprise
        tools and scripts that  depended on the exact form of preprocessed output
        from GCC. These  scripts should be rewritten to ignore unrecognized pragmas.
 
 > From: "Chris Hill" <cnh at mit.edu>
 > To: "'Jane Jimeian'" <jane at atlantic.ocean.fsu.edu>
 > Cc: <dewar at ocean.fsu.edu>, <support at mitgcm.org>
 > Subject: RE: MITgcm
 > Date: Fri, 25 Jun 2004 15:16:39 -0400
 > 
 > Hi Jane,
 >  
 >  Things should build on a G5. I'm forwarding this to our support list (
 > support at mitgcm.org ). There are several G5 users on that list whih may
 > recognise the error. That's also the place to send support questions first.
 > That way several people see them.
 > 
 >  One question - are you using xlf (the IBM compilers) or the GNU compilers (
 > g77 etc... ). Both are available for G5, but you need to use a different
 > optfile for each one.
 > 
 > Thanks,
 > 
 > Chris
 >   
 > 
 > > -----Original Message-----
 > > From: Jane Jimeian [mailto:jane at atlantic.ocean.fsu.edu] 
 > > Sent: Friday, June 25, 2004 3:00 PM
 > > To: cnh at mit.edu
 > > Cc: dewar at ocean.fsu.edu
 > > Subject: MITgcm
 > > 
 > > 
 > > i work for bill dewar.  i'm trying to build MITgcm on a G5 
 > > (dual processer) and i'm having a problem interpreting the 
 > > documentation in
 > > ~/MITgcm/tools/build_options/darwin_ppc_xlf:
 > > 
 > > #   o tim.c should use uembellished cloc() are the procedure 
 > > name for XLF
 > > #     ETIME (timers.F) and FDATE (utils.F) are not available 
 > > with Darwin+XLF so need to be switched
 > > 
 > > this is where it stops in the makefile:
 > > 
 > > [snip]
 > > _myfield.o write_state.o tim.o timer_stats.o
 > > /usr/bin/ld: Undefined symbols:
 > > _etime
 > > make: *** [mitgcmuv] Error 1
 > > 
 > > thanks for any help you can offer.   ~jane
 > > 
 > 
 >