May I ask what I am using when trying to compile the v_interp program gfortran v_interp.f -L/home/yy/software/netcdf/lib -lnetcdf -lm -I/home/yy/software/netcdf/include -ffree-form -o v_interp Why does this code have the following error? How should I compile the program correctly? Thank you, administrators.
Errors:
v_interp.f
.text+0x1030): undefined reference to `iargc_'
/usr/bin/ld: v_interp.f.text+0x2385): undefined reference to `nf_open_'
/usr/bin/ld: v_interp.f.text+0x23d0): undefined reference to `nf_create_'
/usr/bin/ld: v_interp.f.text+0x23fa): undefined reference to `nf_create_'
/usr/bin/ld: v_interp.f.text+0x2447): undefined reference to `nf_inq_'
/usr/bin/ld: v_interp.f.text+0x2a68): undefined reference to `nf_inq_dim_'
/usr/bin/ld: v_interp.f.text+0x2c23): undefined reference to `nf_def_dim_'
/usr/bin/ld: v_interp.f.text+0x2c96): undefined reference to `nf_def_dim_'
/usr/bin/ld: v_interp.f.text+0x2efe): undefined reference to `nf_inq_attname_'
/usr/bin/ld: v_interp.f.text+0x2f2e): undefined reference to `nf_inq_atttype_'
/usr/bin/ld: v_interp.f.text+0x2f5e): undefined reference to `nf_inq_attlen_'
/usr/bin/ld: v_interp.f.text+0x2fa0): undefined reference to `nf_get_att_text_'
/usr/bin/ld: v_interp.f.text+0x3165): undefined reference to `nf_put_att_text_'
/usr/bin/ld: v_interp.f.text+0x31ad): undefined reference to `nf_get_att_int_'
/usr/bin/ld: v_interp.f.text+0x34b3): undefined reference to `nf_put_att_int_'
/usr/bin/ld: v_interp.f.text+0x34fb): undefined reference to `nf_get_att_real_'
/usr/bin/ld: v_interp.f.text+0x3699): undefined reference to `nf_put_att_real_'
/usr/bin/ld: v_interp.f.text+0x381e): undefined reference to `nf_inq_var_'
/usr/bin/ld: v_interp.f.text+0x3882): undefined reference to `nf_def_var_'
/usr/bin/ld: v_interp.f.text+0x38da): undefined reference to `nf_inq_attname_'
/usr/bin/ld: v_interp.f.text+0x3914): undefined reference to `nf_copy_att_'
/usr/bin/ld: v_interp.f.text+0x3953): undefined reference to `nf_enddef_'
/usr/bin/ld: v_interp.f.text+0x3aae): undefined reference to `nf_open_'
/usr/bin/ld: v_interp.f.text+0x3cd2): undefined reference to `nf_inq_varid_'
/usr/bin/ld: v_interp.f.text+0x3cf8): undefined reference to `nf_get_var_real_'
/usr/bin/ld: v_interp.f.text+0x3f2e): undefined reference to `nf_inq_varid_'
/usr/bin/ld: v_interp.f.text+0x3f54): undefined reference to `nf_get_var_real_'
/usr/bin/ld: v_interp.f.text+0x4094): undefined reference to `nf_inq_var_'
/usr/bin/ld: v_interp.f.text+0x48bf): undefined reference to `nf_get_var_text_'
/usr/bin/ld: v_interp.f.text+0x4a7c): undefined reference to `nf_put_vara_text_'
/usr/bin/ld: v_interp.f.text+0x50af): undefined reference to `nf_get_var_int_'
/usr/bin/ld: v_interp.f.text+0x5982): undefined reference to `nf_put_vara_int_'
/usr/bin/ld: v_interp.f.text+0x5ffa): undefined reference to `nf_get_var_real_'
/usr/bin/ld: v_interp.f.text+0x72cf): undefined reference to `nf_put_vara_real_'
/usr/bin/ld: v_interp.f.text+0x7383): undefined reference to `nf_close_'
Errors:
v_interp.f
.text+0x1030): undefined reference to `iargc_'/usr/bin/ld: v_interp.f
.text+0x2385): undefined reference to `nf_open_'/usr/bin/ld: v_interp.f
.text+0x23d0): undefined reference to `nf_create_'/usr/bin/ld: v_interp.f
.text+0x23fa): undefined reference to `nf_create_'/usr/bin/ld: v_interp.f
.text+0x2447): undefined reference to `nf_inq_'/usr/bin/ld: v_interp.f
.text+0x2a68): undefined reference to `nf_inq_dim_'/usr/bin/ld: v_interp.f
.text+0x2c23): undefined reference to `nf_def_dim_'/usr/bin/ld: v_interp.f
.text+0x2c96): undefined reference to `nf_def_dim_'/usr/bin/ld: v_interp.f
.text+0x2efe): undefined reference to `nf_inq_attname_'/usr/bin/ld: v_interp.f
.text+0x2f2e): undefined reference to `nf_inq_atttype_'/usr/bin/ld: v_interp.f
.text+0x2f5e): undefined reference to `nf_inq_attlen_'/usr/bin/ld: v_interp.f
.text+0x2fa0): undefined reference to `nf_get_att_text_'/usr/bin/ld: v_interp.f
.text+0x3165): undefined reference to `nf_put_att_text_'/usr/bin/ld: v_interp.f
.text+0x31ad): undefined reference to `nf_get_att_int_'/usr/bin/ld: v_interp.f
.text+0x34b3): undefined reference to `nf_put_att_int_'/usr/bin/ld: v_interp.f
.text+0x34fb): undefined reference to `nf_get_att_real_'/usr/bin/ld: v_interp.f
.text+0x3699): undefined reference to `nf_put_att_real_'/usr/bin/ld: v_interp.f
.text+0x381e): undefined reference to `nf_inq_var_'/usr/bin/ld: v_interp.f
.text+0x3882): undefined reference to `nf_def_var_'/usr/bin/ld: v_interp.f
.text+0x38da): undefined reference to `nf_inq_attname_'/usr/bin/ld: v_interp.f
.text+0x3914): undefined reference to `nf_copy_att_'/usr/bin/ld: v_interp.f
.text+0x3953): undefined reference to `nf_enddef_'/usr/bin/ld: v_interp.f
.text+0x3aae): undefined reference to `nf_open_'/usr/bin/ld: v_interp.f
.text+0x3cd2): undefined reference to `nf_inq_varid_'/usr/bin/ld: v_interp.f
.text+0x3cf8): undefined reference to `nf_get_var_real_'/usr/bin/ld: v_interp.f
.text+0x3f2e): undefined reference to `nf_inq_varid_'/usr/bin/ld: v_interp.f
.text+0x3f54): undefined reference to `nf_get_var_real_'/usr/bin/ld: v_interp.f
.text+0x4094): undefined reference to `nf_inq_var_'/usr/bin/ld: v_interp.f
.text+0x48bf): undefined reference to `nf_get_var_text_'/usr/bin/ld: v_interp.f
.text+0x4a7c): undefined reference to `nf_put_vara_text_'/usr/bin/ld: v_interp.f
.text+0x50af): undefined reference to `nf_get_var_int_'/usr/bin/ld: v_interp.f
.text+0x5982): undefined reference to `nf_put_vara_int_'/usr/bin/ld: v_interp.f
.text+0x5ffa): undefined reference to `nf_get_var_real_'/usr/bin/ld: v_interp.f
.text+0x72cf): undefined reference to `nf_put_vara_real_'/usr/bin/ld: v_interp.f
.text+0x7383): undefined reference to `nf_close_'