Hello,

I'm trying to compile some fortran code and I'm running into some confusing linking errors. I have some code that I compile and place into a static library:

>gfortran -c -I../../inc -o bdout.o bdout.F
>ar rv libgeo.a bdout.o

I then try to compile against that library with some simple test code and get the following:

>gfortran -o mytest -L -lgeo mytest.F
/tmp/cc4uvcsj.o: In function `MAIN__':
mytest.F:(.text+0xb0): undefined reference to `ncwrite1_'
collect2: ld returned 1 exit status

It's not in the object naming because everything looks fine:

>nm -u libgeo.a

bdout.o:
     U _gfortran_exit_i4
     U _gfortran_st_write
     U _gfortran_st_write_done
     U _gfortran_transfer_character
     U _gfortran_transfer_integer
     U ncobjcl_
     U ncobjwrp_
     U ncopencr_
     U ncopenshcr_
     U ncopenwr_
     U ncwrite1_
     U ncwrite2_
     U ncwrite3_
     U ncwrite4_
     U ncwritev_

I can check the original object file too:

>nm -u bdout.o

     U _gfortran_exit_i4
     U _gfortran_st_write
     U _gfortran_st_write_done
     U _gfortran_transfer_character
     U _gfortran_transfer_integer
     U ncobjcl_
     U ncobjwrp_
     U ncopencr_
     U ncopenshcr_
     U ncopenwr_
     U ncwrite1_
     U ncwrite2_
     U ncwrite3_
     U ncwrite4_
     U ncwritev_

The test code simply contains a single call to a function defined in bdout.o:

program hello
        print *,"Hello World!"
        call ncwrite1( istat, f, ix2, ix3, ix4, ix5, ih )
end program hello

I can't figure out what the problem is. Does anyone have any suggestions? Maybe even just a way to track the problem down?

Cheers.