-create_disk_CFLAGS = -I$(top_srcdir)/src -I$(top_builddir)/src -Wall
-create_disk_LDADD = $(top_builddir)/src/libguestfs.la
+create_disk_CFLAGS = \
+ -I$(top_srcdir)/src -I$(top_builddir)/src \
+ $(WARN_CFLAGS) $(WERROR_CFLAGS)
+create_disk_LDADD = \
+ $(top_builddir)/src/libguestfs.la