add handling for other linux distros

src/libthecore/fdwatch.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#ifndef OS_WINDOWS
+#ifndef __USE_SELECT__
 
     typedef struct fdwatch		FDWATCH;
     typedef struct fdwatch *	LPFDWATCH;

src/libthecore/main.cpp

@@ -49,7 +49,9 @@ int thecore_init(int fps, HEARTFUNC heartbeat_func)
     srand(time(0));
 #else
     srandom(time(0) + getpid() + getuid());
+#ifdef OS_FREEBSD
     srandomdev();
+#endif
 #endif
 
 	log_init();

src/libthecore/signal.cpp

@@ -4,7 +4,7 @@
 void signal_setup() {}
 void signal_timer_disable() {}
 void signal_timer_enable(int timeout_seconds) {}
-#elif OS_FREEBSD
+#else
 #define RETSIGTYPE void
 
 RETSIGTYPE reap(int sig)