diff --git a/libcxx/src/bind.cpp b/libcxx/src/bind.cpp
index cab0b7c..b318fc1 100644
--- a/libcxx/src/bind.cpp
+++ b/libcxx/src/bind.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#define _LIBCPP_BUILDING_BIND
 #include "functional"
 
 _LIBCPP_BEGIN_NAMESPACE_STD
@@ -14,16 +15,16 @@
 namespace placeholders
 {
 
-__ph<1>   _1;
-__ph<2>   _2;
-__ph<3>   _3;
-__ph<4>   _4;
-__ph<5>   _5;
-__ph<6>   _6;
-__ph<7>   _7;
-__ph<8>   _8;
-__ph<9>   _9;
-__ph<10> _10;
+const __ph<1>   _1{};
+const __ph<2>   _2{};
+const __ph<3>   _3{};
+const __ph<4>   _4{};
+const __ph<5>   _5{};
+const __ph<6>   _6{};
+const __ph<7>   _7{};
+const __ph<8>   _8{};
+const __ph<9>   _9{};
+const __ph<10> _10{};
 
 }  // placeholders