[newbie] "linker input file unused because linking not done"?

[Tim Prince]

On 11/25/2011 4:56 PM, Tom Roche wrote:

> I have a Makefile with
>
>> FC     = gfortran
>> FFLAGS = -ffixed-line-length-132 -w -c -m64 -march=native -funroll-loops --param max-unroll-times=4 -ftree-vectorize -ftree-vectorizer-verbose=0 -O2 -I$(NETCDF)/include -I$(IOAPI_ROOT)/src -I.
>> LIBS   = -L$(IOAPI_ROOT)/lib -lioapi \
>>           -L$(NETCDF)/lib -lnetcdff -lnetcdf
>

>
>> gfortran: warning:<object filename here/>: linker input file unused because linking not done
>

Yes, the -c in FFLAGS tells gfortran not to pass a command to ld.  It's 
usual to leave -c out of FFLAGS and add it explicitly to the rules for 
making .o and .mod files etc.


-- 
Tim Prince