extconf.h is:
/* begin */
1: #ifndef EXTCONF_H
2: #define EXTCONF_H
3: #define TEST_INIT_FUNCS(X) X(fstring) X(nofree) X(enc_associate) X(new) X(set_len) X(enc_str_buf_cat) X(modify) X(capacity) X(qsort) X(rb_str_dup) X(coderange) X(ellipsize) X(normalize) X(cstr)
4: #endif
/* end */