Don't try to check core:net on the BSDs.

core/net/addr.odin

@@ -1,4 +1,6 @@
+// +build windows, linux, darwin
 package net
+
 /*
 	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
 	For other protocols and their features, see subdirectories of this package.

core/net/common.odin

@@ -1,4 +1,6 @@
+// +build windows, linux, darwin
 package net
+
 /*
 	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
 	For other protocols and their features, see subdirectories of this package.

core/net/dns.odin

@@ -1,3 +1,11 @@
+// +build windows, linux, darwin
+package net
+
+/*
+	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
+	For other protocols and their features, see subdirectories of this package.
+*/
+
 /*
 	Copyright 2022 Tetralux        <[email protected]>
 	Copyright 2022 Colin Davidson  <[email protected]>
@@ -10,12 +18,6 @@
 		Jeroen van Rijn: Cross platform unification, code style, documentation
 */
 
-/*
-	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
-	For other protocols and their features, see subdirectories of this package.
-*/
-package net
-
 import "core:mem"
 import "core:strings"
 import "core:time"

core/net/interface.odin

@@ -1,3 +1,11 @@
+// +build windows, linux, darwin
+package net
+
+/*
+	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
+	For other protocols and their features, see subdirectories of this package.
+*/
+
 /*
 	Copyright 2022 Tetralux        <[email protected]>
 	Copyright 2022 Colin Davidson  <[email protected]>
@@ -10,12 +18,6 @@
 		Jeroen van Rijn: Cross platform unification, code style, documentation
 */
 
-/*
-	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
-	For other protocols and their features, see subdirectories of this package.
-*/
-package net
-
 import "core:strings"
 
 MAX_INTERFACE_ENUMERATION_TRIES :: 3

core/net/socket.odin

@@ -1,3 +1,11 @@
+// +build windows, linux, darwin
+package net
+
+/*
+	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
+	For other protocols and their features, see subdirectories of this package.
+*/
+
 /*
 	Copyright 2022-2023 Tetralux        <[email protected]>
 	Copyright 2022-2023 Colin Davidson  <[email protected]>
@@ -10,12 +18,6 @@
 		Jeroen van Rijn: Cross platform unification, code style, documentation
 */
 
-/*
-	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
-	For other protocols and their features, see subdirectories of this package.
-*/
-package net
-
 any_socket_to_socket :: proc(socket: Any_Socket) -> Socket {
 	switch s in socket {
 	case TCP_Socket:  return Socket(s)