diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_POLL_H.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_POLL_H.h
new file mode 100644
index 0000000..ebd4215
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_POLL_H.h
@@ -0,0 +1,19 @@
+// HAVE_POLL_H : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE_POLL_H
+
+/* Since Linux 2.1.23/glibc (all versions; emulated using select() on older
+ * kernels), FreeBSD (all versions), OpenBSD (all versions), NetBSD 1.3, Mac
+ * OS (all versions).
+ */
+#if defined(__GLIBC__)                  || \
+    defined(__FreeBSD__)                || \
+    defined(__OpenBSD__)                || \
+    BUILD2_AUTOCONF_NETBSD_PREREQ(1, 3) || \
+    defined(BUILD2_AUTOCONF_MACOS)
+#  define HAVE_POLL_H 1
+#endif