+ dnl The following line is that so the user can test
+ dnl HAVE_WCHAR_H && HAVE_WCTYPE_H before #include "mbchar.h".
+ AC_CHECK_HEADERS_ONCE(wchar.h wctype.h)
+ dnl Compile mbchar.c only if HAVE_WCHAR_H && HAVE_WCTYPE_H.
+ if test $ac_cv_header_wchar_h = yes && test $ac_cv_header_wctype_h = yes; then
+ AC_LIBOBJ([mbchar])
+ dnl Prerequisites of mbchar.h and mbchar.c.
+ AC_CHECK_FUNCS([iswcntrl])
+ fi