Exclude Mq and Timer from link build

Author: tyler-gilbert

libraries/ThreadAPI/include/thread/Timer.hpp

@@ -3,6 +3,8 @@
 #ifndef THREADAPI_THREAD_TIMER_HPP
 #define THREADAPI_THREAD_TIMER_HPP
 
+#if !defined __link
+
 #include <signal.h>
 
 #include "Signal.hpp"
@@ -65,4 +67,6 @@ class Timer : public api::ExecutionContext {
 
 } // namespace thread
 
+#endif
+
 #endif // THREADAPI_THREAD_TIMER_HPP

libraries/ThreadAPI/src/Mq.cpp

@@ -1,5 +1,7 @@
 // Copyright 2011-2021 Tyler Gilbert and Stratify Labs, Inc; see LICENSE.md
 
+#if !defined __link
+
 #include <mqueue.h>
 
 #include "chrono.hpp"
@@ -84,3 +86,5 @@ void Mq::unlink(const char *name){
   API_SYSTEM_CALL("", mq_unlink(name));
 }
 
+#endif
+

libraries/ThreadAPI/src/Timer.cpp

@@ -1,3 +1,5 @@
+#if !defined __link
+
 #include <unistd.h>
 
 #include "thread/Timer.hpp"
@@ -52,3 +54,5 @@ chrono::ClockTime Timer::alarm(const Alarm &options) {
                                options.interval().nanoseconds() / 1000UL));
   return chrono::ClockTime(return_value() * 1_microseconds);
 }
+
+#endif