diff -Naur openttd-1.11.0/cmake/CompileFlags.cmake openttd-1.11.0.serenity/cmake/CompileFlags.cmake
--- openttd-1.11.0/cmake/CompileFlags.cmake	2021-04-01 14:33:44.000000000 +0200
+++ openttd-1.11.0.serenity/cmake/CompileFlags.cmake	2021-04-19 19:30:33.457232215 +0200
@@ -154,7 +154,7 @@
         message(FATAL_ERROR "No warning flags are set for this compiler yet; please consider creating a Pull Request to add support for this compiler.")
     endif()
 
-    if(NOT WIN32)
+    if(NOT WIN32 AND NOT SERENITYOS)
         # rdynamic is used to get useful stack traces from crash reports.
         set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -rdynamic")
     endif()
diff -Naur openttd-1.11.0/src/network/core/host.cpp openttd-1.11.0.serenity/src/network/core/host.cpp
--- openttd-1.11.0/src/network/core/host.cpp	2021-04-01 14:33:44.000000000 +0200
+++ openttd-1.11.0.serenity/src/network/core/host.cpp	2021-04-19 19:30:33.457232215 +0200
@@ -147,6 +147,7 @@
 
 static void NetworkFindBroadcastIPsInternal(NetworkAddressList *broadcast) // !GETIFADDRS implementation
 {
+#ifndef __serenity__
 	SOCKET sock = socket(AF_INET, SOCK_DGRAM, 0);
 	if (sock == INVALID_SOCKET) return;
 
@@ -183,6 +184,7 @@
 	}
 
 	closesocket(sock);
+#endif
 }
 #endif /* all NetworkFindBroadcastIPsInternals */
 
diff -Naur openttd-1.11.0/src/network/core/os_abstraction.h openttd-1.11.0.serenity/src/network/core/os_abstraction.h
--- openttd-1.11.0/src/network/core/os_abstraction.h	2021-04-01 14:33:44.000000000 +0200
+++ openttd-1.11.0.serenity/src/network/core/os_abstraction.h	2021-04-19 19:30:33.457232215 +0200
@@ -59,13 +59,14 @@
 #	include <unistd.h>
 #	include <sys/ioctl.h>
 #	include <sys/socket.h>
+#	include <sys/select.h>
 #	include <netinet/in.h>
 #	include <netinet/tcp.h>
 #	include <arpa/inet.h>
 #	include <net/if.h>
 /* According to glibc/NEWS, <ifaddrs.h> appeared in glibc-2.3. */
 #	if !defined(__sgi__) && !defined(SUNOS) && !defined(__INNOTEK_LIBC__) \
-	   && !(defined(__GLIBC__) && (__GLIBC__ <= 2) && (__GLIBC_MINOR__ <= 2)) && !defined(__dietlibc__) && !defined(HPUX)
+	   && !(defined(__GLIBC__) && (__GLIBC__ <= 2) && (__GLIBC_MINOR__ <= 2)) && !defined(__dietlibc__) && !defined(HPUX) && !defined(__serenity__)
 /* If for any reason ifaddrs.h does not exist on your system, comment out
  *   the following two lines and an alternative way will be used to fetch
  *   the list of IPs from the system. */
diff -Naur openttd-1.11.0/src/os/unix/unix.cpp openttd-1.11.0.serenity/src/os/unix/unix.cpp
--- openttd-1.11.0/src/os/unix/unix.cpp	2021-04-01 14:33:44.000000000 +0200
+++ openttd-1.11.0.serenity/src/os/unix/unix.cpp	2021-04-19 19:30:33.457232215 +0200
@@ -42,9 +42,11 @@
 #	define HAS_SYSCTL
 #endif
 
+#ifndef __serenity__
 #ifdef HAS_STATVFS
 #include <sys/statvfs.h>
 #endif
+#endif
 
 #ifdef HAS_SYSCTL
 #include <sys/sysctl.h>
@@ -84,7 +86,7 @@
 
 	if (statfs(path, &s) != 0) return false;
 	free = (uint64)s.f_bsize * s.f_bavail;
-#elif defined(HAS_STATVFS)
+#elif defined(HAS_STATVFS) && !defined(__serenity__)
 	struct statvfs s;
 
 	if (statvfs(path, &s) != 0) return false;
diff -Naur openttd-1.11.0/src/stdafx.h openttd-1.11.0.serenity/src/stdafx.h
--- openttd-1.11.0/src/stdafx.h	2021-04-01 14:33:44.000000000 +0200
+++ openttd-1.11.0.serenity/src/stdafx.h	2021-04-19 20:08:30.758187723 +0200
@@ -28,7 +28,7 @@
 #	define TROUBLED_INTS
 #endif
 
-#if defined(__HAIKU__) || defined(__CYGWIN__)
+#if defined(__HAIKU__) || defined(__CYGWIN__) || defined(__serenity__)
 #	include <strings.h> /* strncasecmp */
 #endif
 
@@ -107,7 +107,7 @@
 #	define strcasecmp stricmp
 #endif
 
-#if defined(SUNOS) || defined(HPUX) || defined(__CYGWIN__)
+#if defined(SUNOS) || defined(HPUX) || defined(__CYGWIN__) || defined(__serenity__)
 #	include <alloca.h>
 #endif
 
@@ -307,7 +307,7 @@
 typedef unsigned char byte;
 
 /* This is already defined in unix, but not in QNX Neutrino (6.x) or Cygwin. */
-#if (!defined(UNIX) && !defined(__HAIKU__)) || defined(__QNXNTO__) || defined(__CYGWIN__)
+#if (!defined(UNIX) && !defined(__HAIKU__)) || defined(__QNXNTO__) || defined(__CYGWIN__) || defined(__serenity__)
 	typedef unsigned int uint;
 #endif