diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_INTTYPES_H.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_INTTYPES_H.h
new file mode 100644
index 0000000..98514cf
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_INTTYPES_H.h
@@ -0,0 +1,18 @@
+// HAVE_INTTYPES_H : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE_INTTYPES_H
+
+/* Since OpenBSD 3.9, FreeBSD 5.0, NetBSD 5.0, Mac OS X 10.3
+ * and glibc 2.2.
+ */
+#if BUILD2_AUTOCONF_OPENBSD_PREREQ(200601) || \
+    BUILD2_AUTOCONF_FREEBSD_PREREQ(2, 3)   || \
+    BUILD2_AUTOCONF_NETBSD_PREREQ(5, 0)    || \
+    BUILD2_AUTOCONF_MACOS_PREREQ(10, 3)    || \
+    BUILD2_AUTOCONF_GLIBC_PREREQ(2, 2)
+#  define HAVE_INTTYPES_H 1
+#endif