-e 's|@''NEXT_STDDEF_H''@|$(NEXT_STDDEF_H)|g' \
-e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
-e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
< $(srcdir)/stddef.in.h; \
} > $@-t && \
mv $@-t $@
-e 's|@''NEXT_STDDEF_H''@|$(NEXT_STDDEF_H)|g' \
-e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
-e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
< $(srcdir)/stddef.in.h; \
} > $@-t && \
mv $@-t $@