fix compilation on win32

src/framework/global.h

@@ -38,6 +38,7 @@
 #include "const.h"
 
 // additional utilities
+#include "util/compiler.h"
 #include "util/types.h"
 #include "util/tools.h"
 #include "math/point.h"
@@ -49,7 +50,4 @@
 // logger
 #include "core/logger.h"
 
-// easy typing for _1, _2, ...
-using namespace std::placeholders;
-
 #endif