configure.ac: autodetect sin_len member in struct sockaddr_in.

This fixes a build issue on Haiku as it does have sin_len. Tested on Linux as well. For some reason AC_CHECK_MEMBER doesn't generate the proper define in config.h.in, so I used AC_CHECK_MEMBERS.

configure.ac: autodetect sin_len member in struct sockaddr_in.
7b2283c2 · François Revol · c74e0183 · 7b2283c2 · 7b2283c2
Commit 7b2283c2 authored Jan 05, 2018 by François Revol
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Showing with 3 additions and 2 deletions

configure.ac configure.ac +2 -0

IPv4Address.hxx src/net/IPv4Address.hxx +1 -2

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--- a/configure.ac
+++ b/configure.ac
@@ -243,6 +243,8 @@ AC_CHECK_FUNCS(fnmatch)
 AC_CHECK_FUNCS(strndup)
 AC_CHECK_FUNCS(strcasestr)

+AC_CHECK_MEMBERS([struct sockaddr_in.sin_len], [], [], [[#include <netinet/in.h>]])
+
 if test x$host_is_linux = xyes; then
 	MPD_OPTIONAL_FUNC(eventfd, eventfd, USE_EVENTFD)
 	MPD_OPTIONAL_FUNC(signalfd, signalfd, USE_SIGNALFD)

--- a/src/net/IPv4Address.hxx
+++ b/src/net/IPv4Address.hxx
@@ -81,8 +81,7 @@ class IPv4Address {
 	static constexpr struct sockaddr_in Construct(struct in_addr address,
 						      uint16_t port) {
 		return {
-#if defined(__APPLE__) || \
-    defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
+#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
 			sizeof(struct sockaddr_in),
 #endif
 			AF_INET,