https://bugs.gentoo.org/671594

--- a/game/audio.cc
+++ b/game/audio.cc
@@ -77,7 +77,7 @@
 	static ptime getTime() { return microsec_clock::universal_time(); }
 	// Conversion helpers
 	static double getSeconds(time_duration t) { return 1e-6 * t.total_microseconds(); }
-	static time_duration getDuration(double seconds) { return microseconds(1e6 * seconds); }
+	static time_duration getDuration(double seconds) { return microseconds(static_cast<long long>(1e6 * seconds)); }
 
 	mutable boost::mutex m_mutex;
 	ptime m_baseTime; ///< A reference time (corresponds to m_basePos)
@@ -149,7 +149,7 @@
 	int64_t m_pos; ///< Current sample position
 	bool m_preview;
 	AudioClock m_clock;
-	time_duration durationOf(int64_t samples) const { return microseconds(1e6 * samples / srate / 2.0); }
+	time_duration durationOf(int64_t samples) const { return microseconds(static_cast<long long>(1e6 * samples / srate / 2.0)); }
 public:
 	bool suppressCenterChannel;
 	double fadeLevel;
--- a/game/backgrounds.hh
+++ b/game/backgrounds.hh
@@ -7,6 +7,7 @@
 #include <boost/scoped_ptr.hpp>
 #include <boost/thread/mutex.hpp>
 #include <boost/thread/thread.hpp>
+#include <boost/noncopyable.hpp>
 #include <vector>
 
 /// songs class for songs screen
--- a/game/songs.hh
+++ b/game/songs.hh
@@ -6,6 +6,7 @@
 #include <boost/scoped_ptr.hpp>
 #include <boost/thread/mutex.hpp>
 #include <boost/thread/thread.hpp>
+#include <boost/noncopyable.hpp>
 #include <set>
 #include <sstream>
 #include <vector>
--- a/game/svg.cc
+++ b/game/svg.cc
@@ -4,6 +4,7 @@
 #include "configuration.hh"
 #include "../common/image.hh"
 
+#include <boost/smart_ptr/shared_ptr.hpp>
 #include <librsvg/rsvg.h>
 #include <iostream>