diff --git a/Makefile.am b/Makefile.am
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,6 +19,7 @@ pkglib_LTLIBRARIES = libdistrencommon.la
 libdistrencommon_la_SOURCES = src/common/asprintf.c src/common/asprintf.h \
 	src/common/execio.c src/common/execio.h \
 	src/common/misc.c src/common/misc.h \
+	src/common/multiio.c src/common/multiio.h \
 	src/common/options.c src/common/options.h \
 	src/common/protocol.c src/common/protocol.h \
 	src/common/remoteio.h \