if test -r $$file && cmp -s glibconfig.h $$file; then :; \
else $(INSTALL_DATA) glibconfig.h $$file; fi
-configure: configure.in acglib.m4
+CONFIGURE_DEPENDENCIES = acglib.m4
BUILT_SOURCES = stamp-gc-h #note: not glibconfig.h
glibconfig.h: stamp-gc-h