diff --git a/tracy/acinclude.m4 b/tracy/acinclude.m4
new file mode 100644
index 0000000000000000000000000000000000000000..f253bbc12ff70f8087df01ee49e58c5fc54beb08
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+++ b/tracy/acinclude.m4
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+# autoconf 2.59 ships without AC_HEADER_RESOLV, so we include it here
+#
+# AC_HEADER_RESOLV
+# ----------------
+# According to http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?resolver+3
+# (or http://www.chemie.fu-berlin.de/cgi-bin/man/sgi_irix?resolver+3),
+# sys/types.h, netinet/in.h and arpa/nameser.h are required on IRIX.
+# netinet/in.h is needed on Cygwin, too.
+# With Solaris 9, netdb.h is required, to get symbols like HOST_NOT_FOUND.
+#
+AN_HEADER(resolv.h,	[AC_HEADER_RESOLV])
+  AC_DEFUN([AC_HEADER_RESOLV],
+      [AC_CHECK_HEADERS(sys/types.h netinet/in.h arpa/nameser.h netdb.h resolv.h,
+			  [], [],
+			  [[#ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#  include <netinet/in.h>   /* inet_ functions / structs */
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+#  include <arpa/nameser.h> /* DNS HEADER struct */
+#endif
+#ifdef HAVE_NETDB_H
+#  include <netdb.h>
+#endif]])
+      ])# AC_HEADER_RESOLV
+