Move `nTransactionFee` from main.cpp to wallet.cpp

Transaction fee is only used by the wallet.
No need for it to be in main.cpp.

src/init.cpp

@@ -534,6 +534,7 @@ bool AppInit2(boost::thread_group& threadGroup, bool fForceServer)
             return InitError(strprintf(_("Invalid amount for -minrelaytxfee=<amount>: '%s'"), mapArgs["-minrelaytxfee"].c_str()));
     }
 
+#ifdef ENABLE_WALLET
     if (mapArgs.count("-paytxfee"))
     {
         if (!ParseMoney(mapArgs["-paytxfee"], nTransactionFee))
@@ -542,7 +543,6 @@ bool AppInit2(boost::thread_group& threadGroup, bool fForceServer)
             InitWarning(_("Warning: -paytxfee is set very high! This is the transaction fee you will pay if you send a transaction."));
     }
 
-#ifdef ENABLE_WALLET
     strWalletFile = GetArg("-wallet", "wallet.dat");
 #endif
     // ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log

src/main.cpp

@@ -67,9 +67,6 @@ CScript COINBASE_FLAGS;
 
 const string strMessageMagic = "Bitcoin Signed Message:\n";
 
-// Settings
-int64_t nTransactionFee = 0;
-
 // Internal stuff
 namespace {
 struct CBlockIndexWorkComparator

src/main.h

@@ -96,9 +96,6 @@ extern bool fTxIndex;
 extern unsigned int nCoinCacheSize;
 extern bool fHaveGUI;
 
-// Settings
-extern int64_t nTransactionFee;
-
 // Minimum disk space required - used in CheckDiskSpace()
 static const uint64_t nMinDiskSpace = 52428800;
 

src/qt/bitcoin.cpp

@@ -17,6 +17,7 @@
 #include "main.h"
 #include "ui_interface.h"
 #include "util.h"
+#include "wallet.h"
 
 #include <stdint.h>
 

src/qt/optionsmodel.cpp

@@ -14,6 +14,7 @@
 #include "init.h"
 #include "main.h"
 #include "net.h"
+#include "wallet.h"
 #include "walletdb.h"
 
 #include <QSettings>

src/rpcmisc.cpp

@@ -78,9 +78,7 @@ Value getinfo(const Array& params, bool fHelp)
         obj.push_back(Pair("keypoololdest", (boost::int64_t)pwalletMain->GetOldestKeyPoolTime()));
         obj.push_back(Pair("keypoolsize",   (int)pwalletMain->GetKeyPoolSize()));
     }
-#endif
     obj.push_back(Pair("paytxfee",      ValueFromAmount(nTransactionFee)));
-#ifdef ENABLE_WALLET
     if (pwalletMain && pwalletMain->IsCrypted())
         obj.push_back(Pair("unlocked_until", (boost::int64_t)nWalletUnlockTime));
 #endif

src/wallet.cpp

@@ -16,6 +16,8 @@
 
 using namespace std;
 
+// Settings
+int64_t nTransactionFee = 0;
 
 //////////////////////////////////////////////////////////////////////////////
 //

src/wallet.h

@@ -23,6 +23,9 @@
 #include <utility>
 #include <vector>
 
+// Settings
+extern int64_t nTransactionFee;
+
 class CAccountingEntry;
 class CCoinControl;
 class COutput;