build: Add platform specific fixes.

pkg/sys/stats_linux.go

@@ -28,7 +28,7 @@ func GetStats() (stats Stats, err error) {
 		return
 	}
 	stats = Stats{
-		TotalRAM: si.Totalram,
+		TotalRAM: uint64(si.Totalram),
 	}
 	return stats, nil
 }

server-rlimit-nix.go

@@ -73,8 +73,8 @@ func setMaxMemory() error {
 	}
 	// Validate if rlimit memory is set to lower
 	// than max cache size. Then we should use such value.
-	if rLimit.Cur < globalMaxCacheSize {
+	if uint64(rLimit.Cur) < globalMaxCacheSize {
-		globalMaxCacheSize = (80 / 100) * rLimit.Cur
+		globalMaxCacheSize = (80 / 100) * uint64(rLimit.Cur)
 	}
 
 	// Make sure globalMaxCacheSize is less than RAM size.