https://github.com/DNSSEC-Tools/DNSSEC-Tools/pull/22
From: Brahmajit Das <brahmajit.xyz@gmail.com>
Date: Fri, 15 Sep 2023 19:20:12 +0000
Subject: [PATCH] Fix build on musl libc

Function such as ns_name_pton are glibc specific and are not available
on other libc's like musl. This patch should make it possible to use
those internal function. The need for this patch is due to some of the
structs like __ns_sect are already defined on musl and glibc, thus would
result in an redefinition error.

First discovered on Gentoo linux.

Bug: https://bugs.gentoo.org/897862
Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>
--- a/include/validator/validator-compat.h
+++ b/include/validator/validator-compat.h
@@ -896,6 +896,11 @@ typedef enum __ns_flag {
         (cp) += NS_INT32SZ; \
 } while (0)
 
+#endif /* HAVE_ARPA_NAMESER_H */
+
+/* eabi = android */
+/* OpenBSD has arpa/nameser.h, but it doesn't define ns_msg */
+#if !defined(HAVE_ARPA_NAMESER_H) || defined(eabi) || defined(ANDROID) ||defined(__OpenBSD__) || !defined(__GLIBC__)
 int	ns_name_uncompress(const u_char *, const u_char *,
 		const u_char *, char *, size_t);
 int	ns_name_compress(const char *, u_char *, size_t,