-all-local $(lib_OBJECTS): @FNMATCH_H@
-fnmatch.h: fnmatch_.h
- cp $(srcdir)/fnmatch_.h fnmatch.h-t
- mv fnmatch.h-t fnmatch.h
+fnmatch.h: fnmatch.in.h $(ARG_NONNULL_H)
+ $(AM_V_GEN)rm -f $@-t $@ && \
+ { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+ sed -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+ < $(srcdir)/fnmatch.in.h; \
+ } > $@-t && \
+ mv -f $@-t $@