diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -198,6 +198,11 @@
   [disable ZMQ notifications])],
   [use_zmq=$enableval],
   [use_zmq=yes])
+AC_ARG_ENABLE([bip70],
+  [AS_HELP_STRING([--disable-bip70],
+  [disable BIP70 (payment protocol) support in GUI (enabled by default)])],
+  [enable_bip70=$enableval],
+  [enable_bip70=yes])
 
 AC_ARG_WITH([protoc-bindir],[AS_HELP_STRING([--with-protoc-bindir=BIN_DIR],[specify protoc bin path])], [protoc_bin_path=$withval], [])
 
@@ -924,7 +929,9 @@
     [
       PKG_CHECK_MODULES([SSL], [libssl],, [AC_MSG_ERROR(openssl not found.)])
       PKG_CHECK_MODULES([CRYPTO], [libcrypto],,[AC_MSG_ERROR(libcrypto not found.)])
-      BITCOIN_QT_CHECK([PKG_CHECK_MODULES([PROTOBUF], [protobuf], [have_protobuf=yes], [BITCOIN_QT_FAIL(libprotobuf not found)])])
+      if test x$enable_bip70 != xno; then
+        BITCOIN_QT_CHECK([PKG_CHECK_MODULES([PROTOBUF], [protobuf], [have_protobuf=yes], [BITCOIN_QT_FAIL(libprotobuf not found)])])
+      fi
       if test x$use_qr != xno; then
         BITCOIN_QT_CHECK([PKG_CHECK_MODULES([QR], [libqrencode], [have_qrencode=yes], [have_qrencode=no])])
       fi
@@ -984,7 +991,9 @@
     esac
   fi
 
-  BITCOIN_QT_CHECK(AC_CHECK_LIB([protobuf] ,[main],[PROTOBUF_LIBS=-lprotobuf], BITCOIN_QT_FAIL(libprotobuf not found)))
+  if test x$enable_bip70 != xno; then
+    BITCOIN_QT_CHECK(AC_CHECK_LIB([protobuf] ,[main],[PROTOBUF_LIBS=-lprotobuf], BITCOIN_QT_FAIL(libprotobuf not found)))
+  fi
   if test x$use_qr != xno; then
     BITCOIN_QT_CHECK([AC_CHECK_LIB([qrencode], [main],[QR_LIBS=-lqrencode], [have_qrencode=no])])
     BITCOIN_QT_CHECK([AC_CHECK_HEADER([qrencode.h],, have_qrencode=no)])
@@ -1046,7 +1055,9 @@
 AC_SUBST(UNIVALUE_CFLAGS)
 AC_SUBST(UNIVALUE_LIBS)
 
-BITCOIN_QT_PATH_PROGS([PROTOC], [protoc],$protoc_bin_path)
+if test x$enable_bip70 != xno; then
+  BITCOIN_QT_PATH_PROGS([PROTOC], [protoc],$protoc_bin_path)
+fi
 
 AC_MSG_CHECKING([whether to build bitcoind])
 AM_CONDITIONAL([BUILD_BITCOIND], [test x$build_bitcoind = xyes])
@@ -1164,6 +1175,15 @@
   else
     AC_MSG_RESULT([no])
   fi
+
+  AC_MSG_CHECKING([whether to build BIP70 support])
+  if test x$enable_bip70 != xno; then
+    AC_DEFINE([ENABLE_BIP70],[1],[Define if BIP70 support should be compiled in])
+    enable_bip70=yes
+    AC_MSG_RESULT([yes])
+  else
+    AC_MSG_RESULT([no])
+  fi
 fi
 
 AM_CONDITIONAL([ENABLE_ZMQ], [test "x$use_zmq" = "xyes"])
@@ -1205,6 +1225,7 @@
 AM_CONDITIONAL([ENABLE_SEEDER_TESTS],[test x$BUILD_SEEDER_TEST = xyes])
 AM_CONDITIONAL([ENABLE_QT],[test x$bitcoin_enable_qt = xyes])
 AM_CONDITIONAL([ENABLE_QT_TESTS],[test x$BUILD_TEST_QT = xyes])
+AM_CONDITIONAL([ENABLE_BIP70],[test x$enable_bip70 = xyes])
 AM_CONDITIONAL([ENABLE_BENCH],[test x$use_bench = xyes])
 AM_CONDITIONAL([USE_QRCODE], [test x$use_qr = xyes])
 AM_CONDITIONAL([USE_LCOV],[test x$use_lcov = xyes])
@@ -1333,6 +1354,7 @@
 echo "  with wallet   = $enable_wallet"
 echo "  with gui / qt = $bitcoin_enable_qt"
 if test x$bitcoin_enable_qt != xno; then
+    echo "    with bip70  = $enable_bip70"
     echo "    with qr     = $use_qr"
 fi
 echo "  with zmq      = $use_zmq"
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -16,6 +16,7 @@
 option(BUILD_BITCOIN_TX "Build bitcoin-tx" ON)
 option(BUILD_BITCOIN_QT "Build bitcoin-qt" ON)
 option(BUILD_LIBBITCOINCONSENSUS "Build the bitcoinconsenus shared library" ON)
+option(ENABLE_BIP70 "Enable BIP70 (payment protocol) support in GUI" ON)
 option(ENABLE_HARDENING "Harden the executables" ON)
 option(ENABLE_REDUCE_EXPORTS "Reduce the amount of exported symbols" OFF)
 option(ENABLE_STATIC_LIBSTDCXX "Statically link libstdc++" OFF)
diff --git a/src/Makefile.am b/src/Makefile.am
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -668,9 +668,11 @@
 	$(AM_V_at) READELF=$(READELF) OBJDUMP=$(OBJDUMP) $(top_srcdir)/contrib/devtools/security-check.py < $(bin_PROGRAMS)
 endif
 
+if ENABLE_BIP70
 %.pb.cc %.pb.h: %.proto
 	@test -f $(PROTOC)
 	$(AM_V_GEN) $(PROTOC) --cpp_out=$(@D) --proto_path=$(<D) $<
+endif
 
 if EMBEDDED_LEVELDB
 include Makefile.leveldb.include
diff --git a/src/Makefile.qt.include b/src/Makefile.qt.include
--- a/src/Makefile.qt.include
+++ b/src/Makefile.qt.include
@@ -176,9 +176,15 @@
 QT_QRC_LOCALE_CPP = qt/qrc_bitcoin_locale.cpp
 QT_QRC_LOCALE = qt/bitcoin_locale.qrc
 
+if ENABLE_BIP70
 PROTOBUF_CC = qt/paymentrequest.pb.cc
 PROTOBUF_H = qt/paymentrequest.pb.h
 PROTOBUF_PROTO = qt/paymentrequest.proto
+else
+PROTOBUF_CC =
+PROTOBUF_H =
+PROTOBUF_PROTO =
+endif
 
 BITCOIN_QT_H = \
   qt/addressbookpage.h \
@@ -329,7 +335,6 @@
   qt/editaddressdialog.cpp \
   qt/openuridialog.cpp \
   qt/overviewpage.cpp \
-  qt/paymentrequestplus.cpp \
   qt/paymentserver.cpp \
   qt/receivecoinsdialog.cpp \
   qt/receiverequestdialog.cpp \
@@ -348,13 +353,19 @@
   qt/walletmodeltransaction.cpp \
   qt/walletview.cpp
 
+BITCOIN_QT_WALLET_BIP70_CPP = \
+  qt/paymentrequestplus.cpp
+
 BITCOIN_QT_CPP = $(BITCOIN_QT_BASE_CPP)
 if TARGET_WINDOWS
 BITCOIN_QT_CPP += $(BITCOIN_QT_WINDOWS_CPP)
 endif
 if ENABLE_WALLET
 BITCOIN_QT_CPP += $(BITCOIN_QT_WALLET_CPP)
-endif
+if ENABLE_BIP70
+BITCOIN_QT_CPP += $(BITCOIN_QT_WALLET_BIP70_CPP)
+endif # ENABLE_BIP70
+endif # ENABLE_WALLET
 
 RES_IMAGES = 
 
@@ -406,8 +417,11 @@
 if ENABLE_ZMQ
 qt_bitcoin_qt_LDADD += $(LIBBITCOIN_ZMQ) $(ZMQ_LIBS)
 endif
+if ENABLE_BIP70
+qt_bitcoin_qt_LDADD += $(SSL_LIBS)
+endif
 qt_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL) $(LIBBITCOIN_CONSENSUS) $(LIBBITCOIN_CRYPTO) $(LIBUNIVALUE) $(LIBLEVELDB) $(LIBLEVELDB_SSE42) $(LIBMEMENV) \
-  $(BOOST_LIBS) $(QT_LIBS) $(QT_DBUS_LIBS) $(QR_LIBS) $(PROTOBUF_LIBS) $(BDB_LIBS) $(SSL_LIBS) $(CRYPTO_LIBS) $(MINIUPNPC_LIBS) $(LIBSECP256K1) \
+  $(BOOST_LIBS) $(QT_LIBS) $(QT_DBUS_LIBS) $(QR_LIBS) $(PROTOBUF_LIBS) $(BDB_LIBS) $(CRYPTO_LIBS) $(MINIUPNPC_LIBS) $(LIBSECP256K1) \
   $(EVENT_PTHREADS_LIBS) $(EVENT_LIBS)
 qt_bitcoin_qt_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(QT_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
 qt_bitcoin_qt_LIBTOOLFLAGS = $(AM_LIBTOOLFLAGS) --tag CXX
diff --git a/src/Makefile.qttest.include b/src/Makefile.qttest.include
--- a/src/Makefile.qttest.include
+++ b/src/Makefile.qttest.include
@@ -16,9 +16,12 @@
 if ENABLE_WALLET
 TEST_QT_MOC_CPP += \
   qt/test/moc_addressbooktests.cpp \
-  qt/test/moc_paymentservertests.cpp \
   qt/test/moc_wallettests.cpp
-endif
+if ENABLE_BIP70
+TEST_QT_MOC_CPP += \
+  qt/test/moc_paymentservertests.cpp
+endif # ENABLE_BIP70
+endif # ENABLE_WALLET
 
 TEST_QT_H = \
   qt/test/addressbooktests.h \
@@ -57,10 +60,13 @@
 if ENABLE_WALLET
 qt_test_test_bitcoin_qt_SOURCES += \
   qt/test/addressbooktests.cpp \
-  qt/test/paymentservertests.cpp \
   qt/test/wallettests.cpp \
   wallet/test/wallet_test_fixture.cpp
-endif
+if ENABLE_BIP70
+qt_test_test_bitcoin_qt_SOURCES += \
+  qt/test/paymentservertests.cpp
+endif # ENABLE_BIP70
+endif # ENABLE_WALLET
 
 nodist_qt_test_test_bitcoin_qt_SOURCES = $(TEST_QT_MOC_CPP)
 
diff --git a/src/config/bitcoin-config.h.cmake.in b/src/config/bitcoin-config.h.cmake.in
--- a/src/config/bitcoin-config.h.cmake.in
+++ b/src/config/bitcoin-config.h.cmake.in
@@ -62,6 +62,7 @@
 
 #define FDELT_TYPE ${FDELT_TYPE}
 
+#cmakedefine ENABLE_BIP70 1
 #cmakedefine ENABLE_WALLET 1
 #cmakedefine ENABLE_ZMQ 1
 
diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -74,10 +74,6 @@
 # Handle qrc resources
 qt5_add_resources(QRC_BITCOIN_CPP bitcoin.qrc)
 
-# Do protobuf codegen
-find_package(Protobuf REQUIRED)
-protobuf_generate_cpp(PROTOBUF_SOURCES PROTOBUF_HEADERS paymentrequest.proto)
-
 add_library(bitcoin-qt-base
 	bantablemodel.cpp
 	bitcoin.cpp
@@ -106,10 +102,6 @@
 	# Handle ui files
 	${UI_GENERATED_HEADERS}
 
-	# Protobuf codegen
-	${PROTOBUF_HEADERS}
-	${PROTOBUF_SOURCES}
-
 	# Translations
 	${BITCOIN_QM_FILES}
 
@@ -118,7 +110,20 @@
 	qrc_bitcoin_locale.cpp
 )
 
-target_include_directories(bitcoin-qt-base PUBLIC ${Protobuf_INCLUDE_DIRS})
+if(ENABLE_BIP70)
+	# Do protobuf codegen
+	find_package(Protobuf REQUIRED)
+	protobuf_generate_cpp(PROTOBUF_SOURCES PROTOBUF_HEADERS paymentrequest.proto)
+
+	target_sources(bitcoin-qt-base
+		PRIVATE
+			# Protobuf codegen
+			${PROTOBUF_HEADERS}
+			${PROTOBUF_SOURCES}
+	)
+
+	target_include_directories(bitcoin-qt-base PUBLIC ${Protobuf_INCLUDE_DIRS})
+endif()
 
 # Add the minimal integration plugin, and other plugins according to the target
 # platform.
@@ -232,8 +237,6 @@
 	rpcclient
 	Qt5::Widgets
 	Qt5::Network
-	OpenSSL::SSL
-	${Protobuf_LIBRARIES}
 )
 if(ENABLE_NOTIFICATIONS)
 	target_link_libraries(bitcoin-qt-base Qt5::DBus)
@@ -255,7 +258,6 @@
 			editaddressdialog.cpp
 			openuridialog.cpp
 			overviewpage.cpp
-			paymentrequestplus.cpp
 			paymentserver.cpp
 			receivecoinsdialog.cpp
 			receiverequestdialog.cpp
@@ -275,6 +277,18 @@
 			walletview.cpp
 	)
 
+	# Add BIP70 functionality to bitcoin-qt
+	if(ENABLE_BIP70)
+		target_link_libraries(bitcoin-qt-base
+			OpenSSL::SSL
+			${Protobuf_LIBRARIES}
+		)
+		target_sources(bitcoin-qt-base
+			PRIVATE
+				paymentrequestplus.cpp
+		)
+	endif()
+
 	target_link_libraries(bitcoin-qt-base wallet)
 
 	if(ENABLE_QRCODE)
diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -365,8 +365,10 @@
         window->setCurrentWallet(walletModel);
     }
 
+#ifdef ENABLE_BIP70
     connect(walletModel, &WalletModel::coinsSent, paymentServer,
             &PaymentServer::fetchPaymentACK);
+#endif
     connect(walletModel, &WalletModel::unload, this,
             &BitcoinApplication::removeWallet);
 
@@ -398,7 +400,9 @@
     // guaranteed complete.
     qWarning() << "Platform customization:" << platformStyle->getName();
 #ifdef ENABLE_WALLET
+#ifdef ENABLE_BIP70
     PaymentServer::LoadRootCAs();
+#endif
     if (paymentServer) {
         paymentServer->setOptionsModel(optionsModel);
     }
@@ -477,7 +481,7 @@
 }
 
 static void SetupUIArgs() {
-#ifdef ENABLE_WALLET
+#if defined(ENABLE_WALLET) && defined(ENABLE_BIP70)
     gArgs.AddArg("-allowselfsignedrootcertificates",
                  strprintf("Allow self signed root certificates (default: %d)",
                            DEFAULT_SELFSIGNED_ROOTCERTS),
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -2,9 +2,14 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/coincontroldialog.h>
 #include <qt/forms/ui_coincontroldialog.h>
 
+#include <base58.h>
 #include <cashaddrenc.h>
 #include <interfaces/node.h>
 #include <key_io.h>
diff --git a/src/qt/paymentserver.h b/src/qt/paymentserver.h
--- a/src/qt/paymentserver.h
+++ b/src/qt/paymentserver.h
@@ -28,7 +28,13 @@
 // to the server.
 //
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
+#ifdef ENABLE_BIP70
 #include <qt/paymentrequestplus.h>
+#endif
 #include <qt/walletmodel.h>
 
 #include <QObject>
@@ -71,6 +77,7 @@
     // OptionsModel is used for getting proxy settings and display unit
     void setOptionsModel(OptionsModel *optionsModel);
 
+#ifdef ENABLE_BIP70
     // Load root certificate authorities. Pass nullptr (default) to read from
     // the file specified in the -rootcertificates setting, or, if that's not
     // set, to use the system default root certificates. If you pass in a store,
@@ -90,6 +97,7 @@
     static bool verifySize(qint64 requestSize);
     // Verify the payment request amount is valid
     static bool verifyAmount(const Amount requestAmount);
+#endif
 
 Q_SIGNALS:
     // Fired when a valid payment request is received
@@ -99,8 +107,10 @@
     void message(const QString &title, const QString &message,
                  unsigned int style);
 
+#ifdef ENABLE_BIP70
     // Fired when a valid PaymentACK is received
     void receivedPaymentACK(const QString &paymentACKMsg);
+#endif
 
 public Q_SLOTS:
     // Signal this when the main window's UI is ready to display payment
@@ -110,16 +120,20 @@
     // Handle an incoming URI, URI with local file scheme or file
     void handleURIOrFile(const QString &s);
 
+#ifdef ENABLE_BIP70
     // Submit Payment message to a merchant, get back PaymentACK:
     void fetchPaymentACK(WalletModel *walletModel,
                          const SendCoinsRecipient &recipient,
                          QByteArray transaction);
+#endif
 
 private Q_SLOTS:
     void handleURIConnection();
+#ifdef ENABLE_BIP70
     void netRequestFinished(QNetworkReply *);
     void reportSslErrors(QNetworkReply *, const QList<QSslError> &);
     void handlePaymentACK(const QString &paymentACKMsg);
+#endif
 
 protected:
     // Constructor registers this on the parent QApplication to receive
@@ -134,6 +148,7 @@
 
     bool handleURI(const CChainParams &params, const QString &s);
 
+#ifdef ENABLE_BIP70
     static bool readPaymentRequestFromFile(const QString &filename,
                                            PaymentRequestPlus &request);
     bool processPaymentRequest(const PaymentRequestPlus &request,
@@ -145,6 +160,7 @@
 
     // Used to fetch payment requests
     QNetworkAccessManager *netManager;
+#endif
 };
 
 #endif // BITCOIN_QT_PAYMENTSERVER_H
diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp
--- a/src/qt/paymentserver.cpp
+++ b/src/qt/paymentserver.cpp
@@ -2,6 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/paymentserver.h>
 
 #include <cashaddrenc.h>
@@ -44,6 +48,7 @@
 #include <memory>
 
 const int BITCOIN_IPC_CONNECT_TIMEOUT = 1000; // milliseconds
+#ifdef ENABLE_BIP70
 // BIP70 payment protocol messages
 const char *BIP70_MESSAGE_PAYMENTACK = "PaymentACK";
 const char *BIP70_MESSAGE_PAYMENTREQUEST = "PaymentRequest";
@@ -52,6 +57,7 @@
 const char *BIP71_MIMETYPE_PAYMENTACK = "application/bitcoincash-paymentack";
 const char *BIP71_MIMETYPE_PAYMENTREQUEST =
     "application/bitcoincash-paymentrequest";
+#endif
 
 //
 // Create a name that is unique for:
@@ -142,6 +148,7 @@
             }
         }
 
+#ifdef ENABLE_BIP70
         if (!itemNetwork && QFile::exists(arg)) {
             // Filename
             PaymentRequestPlus request;
@@ -153,6 +160,7 @@
                 }
             }
         }
+#endif
 
         if (itemNetwork == nullptr) {
             // Printing to debug.log is about the best we can do here, the GUI
@@ -163,6 +171,7 @@
             continue;
         }
 
+#ifdef ENABLE_BIP70
         if (chosenNetwork && chosenNetwork != itemNetwork) {
             qWarning() << "PaymentServer::ipcSendCommandLine: Payment request "
                           "from network "
@@ -173,6 +182,7 @@
         }
 
         savedPaymentRequests.append(arg);
+#endif
         chosenNetwork = itemNetwork;
     }
 
@@ -217,11 +227,18 @@
 }
 
 PaymentServer::PaymentServer(QObject *parent, bool startLocalServer)
-    : QObject(parent), saveURIs(true), uriServer(0), optionsModel(0),
-      netManager(0) {
+    : QObject(parent), saveURIs(true), uriServer(0), optionsModel(0)
+// clang-format off
+#ifdef ENABLE_BIP70
+      ,netManager(0)
+#endif
+// clang-format on
+{
+#ifdef ENABLE_BIP70
     // Verify that the version of the library that we linked against is
     // compatible with the version of the headers we compiled against.
     GOOGLE_PROTOBUF_VERIFY_VERSION;
+#endif
 
     // Install global event filter to catch QFileOpenEvents
     // on Mac: sent when you click bitcoincash: links
@@ -246,14 +263,18 @@
         } else {
             connect(uriServer, &QLocalServer::newConnection, this,
                     &PaymentServer::handleURIConnection);
+#ifdef ENABLE_BIP70
             connect(this, &PaymentServer::receivedPaymentACK, this,
                     &PaymentServer::handlePaymentACK);
+#endif
         }
     }
 }
 
 PaymentServer::~PaymentServer() {
+#ifdef ENABLE_BIP70
     google::protobuf::ShutdownProtobufLibrary();
+#endif
 }
 
 //
@@ -277,7 +298,9 @@
 }
 
 void PaymentServer::uiReady() {
+#ifdef ENABLE_BIP70
     initNetManager();
+#endif
 
     saveURIs = false;
     for (const QString &s : savedPaymentRequests) {
@@ -293,8 +316,9 @@
     }
 
     QUrlQuery uri((QUrl(s)));
+    // payment request URI
     if (uri.hasQueryItem("r")) {
-        // payment request URI
+#ifdef ENABLE_BIP70
         QByteArray temp;
         temp.append(uri.queryItemValue("r"));
         QString decoded = QUrl::fromPercentEncoding(temp);
@@ -313,6 +337,12 @@
                            CClientUIInterface::ICON_WARNING);
         }
 
+#else
+        Q_EMIT message(tr("URI handling"),
+                       tr("Cannot process payment request because BIP70 "
+                          "support was not compiled in."),
+                       CClientUIInterface::ICON_WARNING);
+#endif
         return true;
     }
 
@@ -350,6 +380,7 @@
         return;
     }
 
+#ifdef ENABLE_BIP70
     // payment request file
     if (QFile::exists(s)) {
         PaymentRequestPlus request;
@@ -365,6 +396,7 @@
 
         return;
     }
+#endif
 }
 
 void PaymentServer::handleURIConnection() {
@@ -392,6 +424,7 @@
     this->optionsModel = _optionsModel;
 }
 
+#ifdef ENABLE_BIP70
 struct X509StoreDeleter {
     void operator()(X509_STORE *b) { X509_STORE_free(b); }
 };
@@ -879,3 +912,4 @@
 X509_STORE *PaymentServer::getCertStore() {
     return certStore.get();
 }
+#endif
diff --git a/src/qt/sendcoinsdialog.cpp b/src/qt/sendcoinsdialog.cpp
--- a/src/qt/sendcoinsdialog.cpp
+++ b/src/qt/sendcoinsdialog.cpp
@@ -2,6 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/forms/ui_sendcoinsdialog.h>
 #include <qt/sendcoinsdialog.h>
 
@@ -309,8 +313,11 @@
         QString recipientElement;
         recipientElement = "<br />";
 
+#ifdef ENABLE_BIP70
         // normal payment
-        if (!rcp.paymentRequest.IsInitialized()) {
+        if (!rcp.paymentRequest.IsInitialized())
+#endif
+        {
             if (rcp.label.length() > 0) {
                 // label with address
                 recipientElement.append(
@@ -320,8 +327,10 @@
                 // just address
                 recipientElement.append(tr("%1 to %2").arg(amount, address));
             }
-        } else if (!rcp.authenticatedMerchant.isEmpty()) {
-            // authenticated payment request
+        }
+#ifdef ENABLE_BIP70
+        // authenticated payment request
+        else if (!rcp.authenticatedMerchant.isEmpty()) {
             recipientElement.append(
                 tr("%1 to %2")
                     .arg(amount,
@@ -330,6 +339,7 @@
             // unauthenticated payment request
             recipientElement.append(tr("%1 to %2").arg(amount, address));
         }
+#endif
 
         formatted.append(recipientElement);
     }
diff --git a/src/qt/sendcoinsentry.cpp b/src/qt/sendcoinsentry.cpp
--- a/src/qt/sendcoinsentry.cpp
+++ b/src/qt/sendcoinsentry.cpp
@@ -2,6 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/forms/ui_sendcoinsentry.h>
 #include <qt/sendcoinsentry.h>
 
@@ -151,10 +155,12 @@
     // Check input validity
     bool retval = true;
 
+#ifdef ENABLE_BIP70
     // Skip checks for payment request
     if (recipient.paymentRequest.IsInitialized()) {
         return retval;
     }
+#endif
 
     if (!model->validateAddress(ui->payTo->text())) {
         ui->payTo->setValid(false);
@@ -183,10 +189,12 @@
 }
 
 SendCoinsRecipient SendCoinsEntry::getValue() {
+#ifdef ENABLE_BIP70
     // Payment request
     if (recipient.paymentRequest.IsInitialized()) {
         return recipient;
     }
+#endif
 
     // Normal payment
     recipient.address = ui->payTo->text();
@@ -214,6 +222,7 @@
 void SendCoinsEntry::setValue(const SendCoinsRecipient &value) {
     recipient = value;
 
+#ifdef ENABLE_BIP70
     // payment request
     if (recipient.paymentRequest.IsInitialized()) {
         // unauthenticated
@@ -236,7 +245,9 @@
     }
 
     // normal payment
-    else {
+    else
+#endif
+    {
         // message
         ui->messageTextLabel->setText(recipient.message);
         ui->messageTextLabel->setVisible(!recipient.message.isEmpty());
diff --git a/src/qt/test/CMakeLists.txt b/src/qt/test/CMakeLists.txt
--- a/src/qt/test/CMakeLists.txt
+++ b/src/qt/test/CMakeLists.txt
@@ -28,10 +28,16 @@
 	target_sources(test_bitcoin-qt
 		PRIVATE
 			addressbooktests.cpp
-			paymentservertests.cpp
 			wallettests.cpp
 			../../wallet/test/wallet_test_fixture.cpp
 	)
 
+	if(ENABLE_BIP70)
+		target_sources(test_bitcoin-qt
+			PRIVATE
+				paymentservertests.cpp
+		)
+	endif()
+
 	target_link_libraries(test_bitcoin-qt wallet)
 endif()
diff --git a/src/qt/test/compattests.cpp b/src/qt/test/compattests.cpp
--- a/src/qt/test/compattests.cpp
+++ b/src/qt/test/compattests.cpp
@@ -2,10 +2,18 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/test/compattests.h>
 
+#if defined(ENABLE_WALLET) && defined(ENABLE_BIP70)
+// this includes protobuf's port.h which defines its own bswap macos
+#include <qt/paymentrequestplus.h>
+#endif
+
 #include <compat/byteswap.h>
-#include <qt/paymentrequestplus.h> // this includes protobuf's port.h which defines its own bswap macos
 
 void CompatTests::bswapTests() {
     // Sibling in bitcoin/src/test/bswap_tests.cpp
diff --git a/src/qt/test/test_main.cpp b/src/qt/test/test_main.cpp
--- a/src/qt/test/test_main.cpp
+++ b/src/qt/test/test_main.cpp
@@ -21,15 +21,19 @@
 #include <qt/test/uritests.h>
 #ifdef ENABLE_WALLET
 #include <qt/test/addressbooktests.h>
+#ifdef ENABLE_BIP70
 #include <qt/test/paymentservertests.h>
+#endif // ENABLE_BIP70
 #include <qt/test/wallettests.h>
-#endif
+#endif // ENABLE_WALLET
 
 #include <QApplication>
 #include <QObject>
 #include <QTest>
 
+#ifdef ENABLE_BIP70
 #include <openssl/ssl.h>
+#endif
 
 #if defined(QT_STATICPLUGIN)
 #include <QtPlugin>
@@ -74,9 +78,11 @@
     BitcoinApplication app(*node, argc, argv);
     app.setApplicationName("BitcoinABC-Qt-test");
 
+#ifdef ENABLE_BIP70
     // This is necessary to initialize openssl on the test framework
     // (at least on Darwin).
     SSL_library_init();
+#endif
 
     AppTests app_tests(app);
     if (QTest::qExec(&app_tests) != 0) {
@@ -86,7 +92,7 @@
     if (QTest::qExec(&test1) != 0) {
         fInvalid = true;
     }
-#ifdef ENABLE_WALLET
+#if defined(ENABLE_WALLET) && defined(ENABLE_BIP70)
     PaymentServerTests test2;
     if (QTest::qExec(&test2) != 0) {
         fInvalid = true;
diff --git a/src/qt/test/wallettests.cpp b/src/qt/test/wallettests.cpp
--- a/src/qt/test/wallettests.cpp
+++ b/src/qt/test/wallettests.cpp
@@ -1,6 +1,7 @@
 #include <qt/test/util.h>
 #include <qt/test/wallettests.h>
 
+#include <base58.h>
 #include <cashaddrenc.h>
 #include <chain.h>
 #include <chainparams.h>
diff --git a/src/qt/transactiondesc.cpp b/src/qt/transactiondesc.cpp
--- a/src/qt/transactiondesc.cpp
+++ b/src/qt/transactiondesc.cpp
@@ -2,6 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#ifdef HAVE_CONFIG_H
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/transactiondesc.h>
 
 #include <cashaddrenc.h>
@@ -311,6 +315,7 @@
         }
     }
 
+#ifdef ENABLE_BIP70
     //
     // PaymentRequest info:
     //
@@ -326,6 +331,7 @@
             }
         }
     }
+#endif
 
     if (wtx.is_coinbase) {
         quint32 numBlocksToMaturity = COINBASE_MATURITY + 1;
diff --git a/src/qt/utilitydialog.cpp b/src/qt/utilitydialog.cpp
--- a/src/qt/utilitydialog.cpp
+++ b/src/qt/utilitydialog.cpp
@@ -17,7 +17,9 @@
 #include <qt/guiconstants.h>
 #include <qt/guiutil.h>
 #include <qt/intro.h>
+#ifdef ENABLE_BIP70
 #include <qt/paymentrequestplus.h>
+#endif
 #include <util/system.h>
 
 #include <QCloseEvent>
diff --git a/src/qt/walletmodel.h b/src/qt/walletmodel.h
--- a/src/qt/walletmodel.h
+++ b/src/qt/walletmodel.h
@@ -7,7 +7,14 @@
 
 #include <chainparams.h>
 #include <interfaces/wallet.h>
+
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
+#ifdef ENABLE_BIP70
 #include <qt/paymentrequestplus.h>
+#endif
 #include <qt/walletmodeltransaction.h>
 #include <support/allocators/secure.h>
 
@@ -60,8 +67,14 @@
     // If from a payment request, this is used for storing the memo
     QString message;
 
+#ifdef ENABLE_BIP70
     // If from a payment request, paymentRequest.IsInitialized() will be true
     PaymentRequestPlus paymentRequest;
+#else
+    // If building with BIP70 is disabled, keep the payment request around as
+    // serialized string to ensure load/store is lossless
+    std::string sPaymentRequest;
+#endif
     // Empty if no authentication or invalid signature/cert/etc.
     QString authenticatedMerchant;
 
@@ -78,10 +91,12 @@
         std::string sAddress = address.toStdString();
         std::string sLabel = label.toStdString();
         std::string sMessage = message.toStdString();
+#ifdef ENABLE_BIP70
         std::string sPaymentRequest;
         if (!ser_action.ForRead() && paymentRequest.IsInitialized()) {
             paymentRequest.SerializeToString(&sPaymentRequest);
         }
+#endif
 
         std::string sAuthenticatedMerchant =
             authenticatedMerchant.toStdString();
@@ -98,10 +113,12 @@
             address = QString::fromStdString(sAddress);
             label = QString::fromStdString(sLabel);
             message = QString::fromStdString(sMessage);
+#ifdef ENABLE_BIP70
             if (!sPaymentRequest.empty()) {
                 paymentRequest.parse(QByteArray::fromRawData(
                     sPaymentRequest.data(), sPaymentRequest.size()));
             }
+#endif
 
             authenticatedMerchant =
                 QString::fromStdString(sAuthenticatedMerchant);
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -2,6 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/walletmodel.h>
 
 #include <cashaddrenc.h>
@@ -132,6 +136,7 @@
     for (const SendCoinsRecipient &rcp : recipients) {
         if (rcp.fSubtractFeeFromAmount) fSubtractFeeFromAmount = true;
 
+#ifdef ENABLE_BIP70
         // PaymentRequest...
         if (rcp.paymentRequest.IsInitialized()) {
             Amount subtotal = Amount::zero();
@@ -157,8 +162,12 @@
                 return InvalidAmount;
             }
             total += subtotal;
-        } else {
-            // User-entered bitcoin address / amount:
+        }
+
+        // User-entered bitcoin address / amount:
+        else
+#endif
+        {
             if (!validateAddress(rcp.address)) {
                 return InvalidAddress;
             }
@@ -226,6 +235,7 @@
 
     std::vector<std::pair<std::string, std::string>> vOrderForm;
     for (const SendCoinsRecipient &rcp : transaction.getRecipients()) {
+#ifdef ENABLE_BIP70
         if (rcp.paymentRequest.IsInitialized()) {
             // Make sure any payment requests involved are still valid.
             if (PaymentServer::verifyExpired(rcp.paymentRequest.getDetails())) {
@@ -236,7 +246,9 @@
             std::string value;
             rcp.paymentRequest.SerializeToString(&value);
             vOrderForm.emplace_back("PaymentRequest", std::move(value));
-        } else if (!rcp.message.isEmpty()) {
+        } else
+#endif
+            if (!rcp.message.isEmpty()) {
             // Message from normal bitcoincash:URI
             // (bitcoincash:123...?message=example)
             vOrderForm.emplace_back("Message", rcp.message.toStdString());
@@ -259,7 +271,10 @@
     // emit coinsSent signal for each recipient
     for (const SendCoinsRecipient &rcp : transaction.getRecipients()) {
         // Don't touch the address book when we have a payment request
-        if (!rcp.paymentRequest.IsInitialized()) {
+#ifdef ENABLE_BIP70
+        if (!rcp.paymentRequest.IsInitialized())
+#endif
+        {
             std::string strAddress = rcp.address.toStdString();
             CTxDestination dest =
                 DecodeDestination(strAddress, getChainParams());
diff --git a/src/qt/walletmodeltransaction.h b/src/qt/walletmodeltransaction.h
--- a/src/qt/walletmodeltransaction.h
+++ b/src/qt/walletmodeltransaction.h
@@ -7,6 +7,8 @@
 
 #include <qt/walletmodel.h>
 
+#include <amount.h>
+
 #include <QObject>
 
 #include <memory>
diff --git a/src/qt/walletmodeltransaction.cpp b/src/qt/walletmodeltransaction.cpp
--- a/src/qt/walletmodeltransaction.cpp
+++ b/src/qt/walletmodeltransaction.cpp
@@ -2,6 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#ifdef HAVE_CONFIG_H
+#include <config/bitcoin-config.h>
+#endif
+
 #include <qt/walletmodeltransaction.h>
 
 #include <interfaces/node.h>
@@ -35,6 +39,7 @@
     const CTransaction *walletTransaction = &wtx->get();
     int i = 0;
     for (SendCoinsRecipient &rcp : recipients) {
+#ifdef ENABLE_BIP70
         if (rcp.paymentRequest.IsInitialized()) {
             Amount subtotal = Amount::zero();
             const payments::PaymentDetails &details =
@@ -53,8 +58,12 @@
                 i++;
             }
             rcp.amount = subtotal;
-        } else {
-            // normal recipient (no payment request)
+        }
+
+        // normal recipient (no payment request)
+        else
+#endif
+        {
             if (i == nChangePosRet) {
                 i++;
             }