Stub missing functions for Switch

CMake/switch/asio_defs.cmake

@@ -3,3 +3,6 @@ target_compile_definitions(asio INTERFACE _DEFAULT_SOURCE=ON)
 
 # Missing headers and declarations provided by DevilutionX
 target_include_directories(asio BEFORE INTERFACE CMake/switch/asio/include)
+
+# Defines the pause() function
+target_link_libraries(asio INTERFACE rdimon)

CMakeLists.txt

@@ -484,7 +484,9 @@ if(NINTENDO_SWITCH)
   list(APPEND libdevilutionx_SRCS
     Source/platform/switch/network.cpp
     Source/platform/switch/keyboard.cpp
-    Source/platform/switch/docking.cpp)
+    Source/platform/switch/docking.cpp
+    Source/platform/switch/asio/net/if.c
+    Source/platform/switch/asio/sys/signal.c)
 endif()
 
 if(VITA)

Source/platform/switch/asio/net/if.c

@@ -0,0 +1,22 @@
+#include <stddef.h>
+#include <errno.h>
+#include <net/if.h>
+
+unsigned int if_nametoindex(const char *__ifname)
+{
+	return ENOTSUP;
+}
+
+char *if_indextoname(unsigned int __ifindex, char *__ifname)
+{
+	return NULL;
+}
+
+struct if_nameindex *if_nameindex()
+{
+	return NULL;
+}
+
+void if_freenameindex(struct if_nameindex *__ptr)
+{
+}

Source/platform/switch/asio/sys/signal.c

@@ -0,0 +1,7 @@
+#include <sys/signal.h>
+#include <errno.h>
+
+int pthread_sigmask (int, const sigset_t *, sigset_t *)
+{
+    return ENOTSUP;
+}