commit 5007d7067918fb3d950d34c01d059e5222db679a
Author:     Aric Belsito <lluixhi@gmail.com>
AuthorDate: Mon Dec 4 00:10:29 2017 +0100
Commit:     Thomas Deutschmann <whissi@gentoo.org>
CommitDate: Wed Jul 11 01:33:28 2018 +0200

    Fix build on MUSL
    
    Add missing AI_IDN and NI_IDN declarations.
    
    Bug: https://bugs.gentoo.org/503914
    Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

diff --git a/arping.c b/arping.c
index c2f2129..d753345 100644
--- a/arping.c
+++ b/arping.c
@@ -44,6 +44,13 @@
 
 #ifdef USE_IDN
 #include <locale.h>
+
+#ifndef AI_IDN
+#define AI_IDN 0x0040
+#endif
+#ifndef AI_CANONIDN
+#define AI_CANONIDN 0x0080
+#endif
 #endif
 
 #include "SNAPSHOT.h"
diff --git a/ping.h b/ping.h
index 3e09685..1e51c67 100644
--- a/ping.h
+++ b/ping.h
@@ -37,6 +37,17 @@
 
 #ifdef USE_IDN
 #include <idn2.h>
+
+#ifndef AI_IDN
+#define AI_IDN 0x0040
+#endif
+#ifndef AI_CANONIDN
+#define AI_CANONIDN 0x0080
+#endif
+#ifndef NI_IDN
+#define NI_IDN 32
+#endif
+
 #define getaddrinfo_flags (AI_CANONNAME | AI_IDN | AI_CANONIDN)
 #define getnameinfo_flags NI_IDN
 #else
diff --git a/tracepath.c b/tracepath.c
index 53bda16..9558e49 100644
--- a/tracepath.c
+++ b/tracepath.c
@@ -29,6 +29,14 @@
 
 #ifdef USE_IDN
 #include <locale.h>
+
+#ifndef AI_IDN
+#define AI_IDN 0x0040
+#endif
+#ifndef NI_IDN
+#define NI_IDN 32
+#endif
+
 #define getnameinfo_flags	NI_IDN
 #else
 #define getnameinfo_flags	0
diff --git a/traceroute6.c b/traceroute6.c
index a1022f9..ab34615 100644
--- a/traceroute6.c
+++ b/traceroute6.c
@@ -246,6 +246,10 @@
 #ifdef USE_IDN
 #include <locale.h>
 
+#ifndef NI_IDN
+#define NI_IDN 32
+#endif
+
 #define ADDRINFO_IDN_FLAGS	AI_IDN
 #define getnameinfo_flags	NI_IDN
 #else