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20020528: netCDF g77 compilation and "-fno-second-underscore"

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  • Subject: 20020528: netCDF g77 compilation and "-fno-second-underscore"
  • Date: Tue, 28 May 2002 08:42:00 -0600
Tao,

>Date: Fri, 24 May 2002 18:42:30 -0400
>From: "Tao" <address@hidden>
>Organization: ?
>To: "Steve Emmerson" <address@hidden>
>Subject: Re: 20020520: netCDF g77 compilation and "-fno-second-underscore"
>Keywords: 200205172158.g4HLwZa14895

The above message contained the following:

> Hi, Steve:
> 
> THANK YOU VERY MUCH FOR YOUR HELP!

You're most welcome.

> We successfuly compiled the netcdf using g77 by setting the
> CPPFLAGS=-DpgiFortran and FFLAGS = -fno-second-underscore. Make test works
> and it also fits with the -fno-second-underscore we have to use for another
> third part library we need. The compiled netcdf library functions have only
> one underscore append which is what we need.

Excellent!

> as follwing is several failed compiling options we tried. Again, we don't
> have Fortran 90 available. So we use g77 to compile the netcdf.
> 
> 1. CPPFLAGS=
>     FFLAGS =
> 
>     compile error in cfortran.h
> 
> 
> 2. CPPFLAGS = -DpgiFortran
>     FFLAGS=
> 
>     g77 compile all codes but make test fails. because the compiled library
> function only has one underscore while test programs look for two
> underscore.
> 
> 3. CPPFLAGS= -Df2cFortran
>     FFLAGS =
> 
>     g77 compiles all code and make test work also. Library functions have
> two underscores which don't fit with another third party library we are
> using.
> 
> 4. CPPFLAGS= -Df2cFortran
>     FFLAGS = -fno-second-underscore
> 
>      g77 compile all codes but make test fails. because the compiled library
> function have two underscores while test programs look for one underscore.
> 
> 5.  CPPFLAGS= -DpgiFortran
>      FFLAGS = -fno-second-underscore
> 
>      g77 compiles all code and make test work. library function has only one
> underscore append which is what we want.
> 
> Basically, our problem is resolved using option 5. It seems to me the
> CPPFLAGS option is used when we compiled netcdf library and FFLAGS is used
> only for netcdf test programs. Is my understanding right?

That is correct.

> Again, many thanks to your kind help and have a great holiday weekend!

Thank you.  Good luck to you.

Regards,
Steve Emmerson   <http://www.unidata.ucar.edu>