diff --git a/configure.ac b/configure.ac
index 2e00982..391e6e2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,6 +16,7 @@ case $target_os in
 	*linux*)
 		TARGET_OS=linux;
 		CFLAGS="$CFLAGS -D_BSD_SOURCE -D_POSIX_SOURCE -D_GNU_SOURCE"
+		AC_SUBST([PLATFORM_LDADD], ['-lrt'])
 		;;
 	*solaris*)
 		TARGET_OS=solaris;