shell> h2xs -n JWcmp -A -O -x -F '-I ../..' jwcmp.h
shell> cp jwcmp.h jwcmp.c JWcmp/
shell> perl Makefile.PL
shell> make
typemap -typemap typemap  JWcmp.xs > JWcmp.xsc && mv JWcmp.xsc JWcmp.c
Error: invalid argument declaration 'int *      ind_c[]' in JWcmp.xs, line 228
Please specify prototyping behavior for JWcmp.xs (see perlxs manual)
make: *** [JWcmp.c] Error 1