BICPL is available at the McConnell Brain Imaging Centre (BIC) at the Montreal Neurological Institute. It was developed as part of a medical imaging software testbed by David MacDonald, with source code and considerable input from Peter Neelin, Louis Collins, and others at the Centre.
A typical program using bicpl will need to link against several libraries: cc test_bicpl.c -o test_bicpl -lbicpl -lvolume_io -lminc -lnetcdf -lm
See the documentation for the BIC Volume IO Library for more information on the list of libraries on the link line.
Note that you may need to specify where to find the headers and library file by using -I and -L options, respectively. For example, cc test_bicpl.c -o test_bicpl -I/usr/local/mni/include -L/usr/local/mni/lib -lbicpl -lvolume_io -lminc -lnetcdf -lm