[netCDF #FVK-122895]: Problem with installing netCDF.

> Please find the config.log attached.
> 
> Thank you very much!
> Yanshi.

OK, here are the relevant lines from config.log:

  configure:17833: gfortran -g -O2 -c conftestf.f
  configure:17836: $? = 0
  configure:17839: gfortran -o conftest -g -O2  conftestf.o conftest.o  
  ld: warning: ignoring file conftest.o, file was built for unsupported file 
format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 
0x 0 0x 0 )  which is not the architecture being linked (i386): conftest.o
  Undefined symbols for architecture i386:
    "_sub_", referenced from:
        _MAIN__ in conftestf.o
  ld: symbol(s) not found for architecture i386

Your gfortran is compiling for i386, a 32-bit architecture, but your gcc is
apparently compiling for a different architecture, probably 64-bit x86_64.
You have to use the same architecture if you want to link the software together.
You could do this by either using the right flags for gcc, for example -m32 or
maybe -arch i386, or use a flag for gfortran, maybe -m64 or -arch x86_64.  If
you installed netcdf-fortran from MacPorts, you may have a gfortran that 
produces 
64-bit objects with a long name something like 
  /opt/local/bin/x86_64-apple-darwin-gfortran-mp-4.7
but it might be easier to just use the gfortran you have and make gcc produce
32-bit objects.

--Russ

> On Mar 25, 2013, at 4:57 PM, Unidata netCDF Support <address@hidden>
> wrote:
> 
> >> Hi Russ,
> >>
> >> I don't have problem installing C library with --disable-netcdf-4. And I 
> >> followed instructions at
> >> http://www.unidata.ucar.edu/software/netcdf/docs/netcdf-fortran-install.html
> >>
> >> But still I get error for './configure --prefix=/usr/local' as below:
> >> checking what FC is set to... gfortran
> >> checking for special C compiler options needed for large files... no
> >> checking for _FILE_OFFSET_BITS value needed for large files... no
> >> configure: displaying some results
> >> checking for /Applications/Xcode.app/Contents/Developer/usr/bin/nm... 
> >> /Applications/Xcode.app/Contents/Developer/usr/bin/nm
> >> checking nm flags...
> >> checking for C-equivalent to Fortran routine "SUB"... sub_
> >> checking for Fortran "byte"... yes
> >> checking for Fortran "integer*2"... yes
> >> checking if Fortran "byte" is C "signed char"... configure: error: Could 
> >> not link conftestf.o and conftest.o
> >>
> >> Any idea how to fix this?
> >> Thank you!
> >> Yanshi.
> >
> > There's not enough information to tell just looking at the error
> > message above.  The error message means a simple Fortran program
> > compiled to conftestf.o can't be linked to a simple C program
> > compiled into conftest.o, so that the Fortran program can call a
> > function defined in the C program.
> >
> > If you look at config.log towards the end of the file, the Fortran
> > and C programs being compiled are shown, when the error occurs.
> > The extra error information in config.log may be helpful in
> > diagnosing the problem.
> >
> > What I see in config.log, using compatible versions of gcc and
> > gfortran, is ouput like this, indicating successful linking:
> >
> > configure:19027: checking if Fortran "byte" is C "signed char"
> > configure:19037: gcc -c -I/usr/local/include -g -O2 conftest.c
> > conftest.c: In function 'sub_':
> > conftest.c:4:3: warning: incompatible implicit declaration of built-in 
> > function 'exit'
> > configure:19040: $? = 0
> > configure:19043: gfortran -g -O0 -fno-inline -c conftestf.f
> > configure:19046: $? = 0
> > configure:19049: gfortran -o conftest -g -O0 -fno-inline  conftestf.o 
> > conftest.o
> > configure:19052: $? = 0
> > configure:19055: ./conftest
> > configure:19058: $? = 0
> > configure:19060: result: yes
> >   ...
> >
> > If you can't figure it out from looking at config.log, send the whole 
> > config.log
> > file to us and we'll see if we can help, but it may take several days ...
> >
> > --Russ
> >
> >> On Mar 24, 2013, at 4:22 PM, Unidata netCDF Support 
> >> <address@hidden<mailto:address@hidden>>
> >> wrote:
> >>
> >> Hi Yanshi,
> >>
> >> I am trying to install netCDF on my MACOS X 10.8.6.
> >> I have installed the netCDF-4.2.1.1 without error by
> >>
> >> ./configure --disable-netcdf-4
> >> make
> >> make check
> >> make install
> >>
> >> However, I could not find the the netcdf.mod and typesizes.mod under
> >> /usr/local/
> >>
> >> The netCDF-4.2.1.1 package only installs the C library.  To install the 
> >> Fortran netCDF libaries,
> >> which have been in a separate distribution since C version 4.1.3, you need 
> >> to download the
> >> Fortran distribution (either the stable release or the beta test) from 
> >> here:
> >>
> >> http://www.unidata.ucar.edu/downloads/netcdf/netcdf-fortran/
> >>
> >> and follow these instructions:
> >>
> >> http://www.unidata.ucar.edu/software/netcdf/docs/netcdf-fortran-install.html
> >>
> >> Alternatively, you could use the MacPorts system (see 
> >> www.macports.org<http://www.macports.org>) and have the full netCDF-4
> >> library installed, including netCDF-Fortran, using
> >>
> >> sudo port install netcdf-fortran
> >>
> >> Note, that may take a while, as it may also download and install 
> >> compatible versions of gcc and
> >> gfortran ...
> >>
> >> --Russ
> >>
> >> So, I continued to install netCDF-fortran-4.2, and ./configure returns
> >> …...
> >> checking for Fortran "byte"... yes
> >> checking for Fortran "integer*2"... yes
> >> checking if Fortran "byte" is C "signed char"... configure: error: Could 
> >> not link conftestf.o and conftest.o
> >>
> >> Any idea how to fix this?
> >> Thank you so much!
> >> Yanshi.
> >>
> >>
> >> Russ Rew                                         UCAR Unidata Program
> >> address@hidden<mailto:address@hidden>                      
> >> http://www.unidata.ucar.edu
> >>
> >>
> >>
> >> Ticket Details
> >> ===================
> >> Ticket ID: FVK-122895
> >> Department: Support netCDF
> >> Priority: Normal
> >> Status: Closed
> >>
> >>
> >>
> >>
> >>
> > Russ Rew                                         UCAR Unidata Program
> > address@hidden                      http://www.unidata.ucar.edu
> >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: FVK-122895
> > Department: Support netCDF
> > Priority: Normal
> > Status: Closed
> >
> >
> 
> 

Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: FVK-122895
Department: Support netCDF
Priority: Normal
Status: Closed