dnl Written by Eric Blake.
-# wchar.m4 serial 23
+# wchar.m4 serial 25
AC_DEFUN([gl_WCHAR_H],
[
fi
AC_SUBST([HAVE_WINT_T])
- if test $gl_cv_header_wchar_h_standalone != yes || test $gt_cv_c_wint_t != yes; then
+ dnl If <stddef.h> is replaced, then <wchar.h> must also be replaced.
+ AC_REQUIRE([gl_STDDEF_H])
+
+ if test $gl_cv_header_wchar_h_standalone != yes || test $gt_cv_c_wint_t != yes || test -n "$STDDEF_H"; then
WCHAR_H=wchar.h
fi