From 0af08f343a7b792f527b78e2a35d9453039940c2 Mon Sep 17 00:00:00 2001
From: Ned Deily <nad@python.org>
Date: Tue, 5 Oct 2021 06:02:57 -0400
Subject: [PATCH] bpo-45163: Restrict added libnetwork check to builds on
 Haiku. (GH-28729)

For example, without the guard the check could cause macOS
installer builds to fail to install on older supported macOS
releases where libnetwork is not available and is not needed
on any release.
---
 configure    | 7 +++++--
 configure.ac | 7 +++++--
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index 3b39641bab37..3a6cf305171b 100755
--- a/configure
+++ b/configure
@@ -10573,8 +10573,9 @@ if test "x$ac_cv_lib_socket_socket" = xyes; then :
 fi
  # SVR4 sockets
 
-# Haiku system library
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for socket in -lnetwork" >&5
+case $ac_sys_system/$ac_sys_release in
+    Haiku*)
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for socket in -lnetwork" >&5
 $as_echo_n "checking for socket in -lnetwork... " >&6; }
 if ${ac_cv_lib_network_socket+:} false; then :
   $as_echo_n "(cached) " >&6
@@ -10614,6 +10615,8 @@ if test "x$ac_cv_lib_network_socket" = xyes; then :
   LIBS="-lnetwork $LIBS"
 fi
 
+    ;;
+esac
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-libs" >&5
 $as_echo_n "checking for --with-libs... " >&6; }
diff --git a/configure.ac b/configure.ac
index 908dd28e7aac..c7cb797e8f3a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3099,8 +3099,11 @@ AC_SUBST(TZPATH)
 AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4
 AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets
 
-# Haiku system library
-AC_CHECK_LIB(network, socket, [LIBS="-lnetwork $LIBS"], [], $LIBS)
+case $ac_sys_system/$ac_sys_release in
+    Haiku*)
+        AC_CHECK_LIB(network, socket, [LIBS="-lnetwork $LIBS"], [], $LIBS)
+    ;;
+esac
 
 AC_MSG_CHECKING(for --with-libs)
 AC_ARG_WITH(libs,
-- 
2.47.3