diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYS_POLL_H.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYS_POLL_H.h
new file mode 100644
index 0000000..d18a6aa
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYS_POLL_H.h
@@ -0,0 +1,14 @@
+// HAVE_SYS_POLL_H : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE_SYS_POLL_H
+
+/* All use poll.h: FreeBSD, OpenBSD, NetBSD, Mac OS.
+ * Since glibc 2.0.
+ */
+#if BUILD2_AUTOCONF_GLIBC_PREREQ(2, 0)
+#  define HAVE_SYS_POLL_H 1
+#endif