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r1882981 | jim | 2020-10-29 21:32:54 +0100 (Thu, 29 Oct 2020) | 5 lines

#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
is required for inet_addr

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diff --git a/build/apr_network.m4 b/build/apr_network.m4
index f70431a800f2dfdd..ba7bf9aa2497df82 100644
--- a/build/apr_network.m4
+++ b/build/apr_network.m4
@@ -160,6 +160,9 @@ AC_DEFUN([APR_CHECK_WORKING_GETNAMEINFO], [
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif