Merge pull request #21 from JaySon-Huang/master

use `realpath call` instead of `realpath program`

Util/Util.cpp

@@ -9,6 +9,7 @@
 =============================================================================*/
 
 #include "Util.h"
+#include "limits.h"
 
 using namespace std;
 
@@ -887,10 +888,9 @@ Util::getSystemOutput(string cmd)
 string
 Util::getExactPath(const char *str)
 {
-    string cmd = "realpath ";
-    cmd += string(str);
-
-    return getSystemOutput(cmd);
+    char resolved_path[PATH_MAX];
+    realpath(str, resolved_path);
+    return resolved_path;
 }
 
 void