Depends-on:
wchar
-wctype
+extensions
+wctype-h [test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1]
+localcharset [test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1]
+streq [test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1]
+uniwidth/width [test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1]
configure.ac:
gl_FUNC_WCWIDTH