diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_STRINGS_H.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_STRINGS_H.h
new file mode 100644
index 0000000..49e0a0b
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_STRINGS_H.h
@@ -0,0 +1,20 @@
+// HAVE_STRINGS_H : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE_STRINGS_H
+
+/* Since 4.4BSD (OpenBSD 2.2, FreeBSD 1.0, NetBSD 1.3, Mac OS X 10.0),
+ * glibc 2.0. Note that while MinGW also provides it, its contents
+ * could be omitted if the NO_OLDNAMES macro is defined. So let's
+ * exclude MinGW for now.
+ */
+#if BUILD2_AUTOCONF_GLIBC_PREREQ(2, 0)     || \
+    BUILD2_AUTOCONF_FREEBSD_PREREQ(1, 0)   || \
+    BUILD2_AUTOCONF_OPENBSD_PREREQ(199712) || \
+    BUILD2_AUTOCONF_NETBSD_PREREQ(1, 3)    || \
+    BUILD2_AUTOCONF_MACOS_PREREQ(10, 0)
+#  define HAVE_STRINGS_H 1
+#endif