+## File descriptor juggling.
+pkginclude_HEADERS += mdup.h
+libmLib_la_SOURCES += mdup.c
+LIBMANS += mdup.3
+
+check_PROGRAMS += mdup.t
+mdup_t_SOURCES = mdup-test.c
+mdup_t_CPPFLAGS = $(TEST_CPPFLAGS)
+mdup_t_LDFLAGS = -static
+
+EXTRA_DIST += mdup-test.sh
+CLEANFILES += mdup.[0-9]*.out mdup.[0-9]*.err
+tests:: mdup.t mdup-test.sh
+ $(srcdir)/mdup-test.sh
+