diff --git a/lib/symboldatabase.cpp b/lib/symboldatabase.cpp
index 8f019eabb..e267c6065 100644
--- a/lib/symboldatabase.cpp
+++ b/lib/symboldatabase.cpp
@@ -3769,3 +3769,32 @@ void SymbolDatabase::setValueTypeInTokenList(Token *tokens)
         }
     }
 }
+
+std::string ValueType::str() const
+{
+    std::string ret;
+    if (isIntegral()) {
+        if (sign == SIGNED)
+            ret = "signed ";
+        else if (sign == UNSIGNED)
+            ret = "unsigned ";
+        if (type == BOOL)
+            ret += "bool";
+        else if (type == CHAR)
+            ret += "char";
+        else if (type == SHORT)
+            ret += "short";
+        else if (type == INT)
+            ret += "int";
+        else if (type == LONG)
+            ret += "long";
+        else if (type == LONGLONG)
+            ret += "long long";
+    } else if (type == FLOAT)
+        ret = "float";
+    else if (type == DOUBLE)
+        ret = "double";
+    for (unsigned int p = 0; p < pointer; p++)
+        ret += "*";
+    return ret;
+}
diff --git a/lib/symboldatabase.h b/lib/symboldatabase.h
index aea05da64..d828b348b 100644
--- a/lib/symboldatabase.h
+++ b/lib/symboldatabase.h
@@ -1039,7 +1039,7 @@ private:
 };
 
 /** Value type */
-class ValueType {
+class CPPCHECKLIB ValueType {
 public:
     enum Sign {UNKNOWN_SIGN, SIGNED, UNSIGNED} sign;
     enum Type {UNKNOWN_TYPE, NONSTD, BOOL, CHAR, SHORT, INT, LONG, LONGLONG, FLOAT, DOUBLE} type;
@@ -1052,33 +1052,7 @@ public:
         return (type >= ValueType::Type::BOOL && type <= ValueType::Type::LONGLONG);
     }
 
-    std::string str() const  {
-        std::string ret;
-        if (isIntegral()) {
-            if (sign == SIGNED)
-                ret = "signed ";
-            else if (sign == UNSIGNED)
-                ret = "unsigned ";
-            if (type == BOOL)
-                ret += "bool";
-            else if (type == CHAR)
-                ret += "char";
-            else if (type == SHORT)
-                ret += "short";
-            else if (type == INT)
-                ret += "int";
-            else if (type == LONG)
-                ret += "long";
-            else if (type == LONGLONG)
-                ret += "long long";
-        } else if (type == FLOAT)
-            ret = "float";
-        else if (type == DOUBLE)
-            ret = "double";
-        for (unsigned int p = 0; p < pointer; p++)
-            ret += "*";
-        return ret;
-    }
+    std::string str() const;
 };
 
 
diff --git a/lib/valueflow.h b/lib/valueflow.h
index 9587eeed3..c61110bee 100644
--- a/lib/valueflow.h
+++ b/lib/valueflow.h
@@ -30,7 +30,7 @@ class ErrorLogger;
 class Settings;
 
 namespace ValueFlow {
-    class Value {
+    class CPPCHECKLIB Value {
     public:
         explicit Value(long long val = 0) : intvalue(val), tokvalue(nullptr), varvalue(val), condition(0), varId(0U), conditional(false), inconclusive(false), defaultArg(false), valueKind(ValueKind::Possible) {}
         Value(const Token *c, long long val) : intvalue(val), tokvalue(nullptr), varvalue(val), condition(c), varId(0U), conditional(false), inconclusive(false), defaultArg(false), valueKind(ValueKind::Possible) {}