Compilation error on WSL #1502

$ make
Making all in src
make[1]: Entering directory '/home/joaot/elements/src'
make[2]: Entering directory '/home/joaot/elements/src'
make[3]: Entering directory '/home/joaot/elements'
make[3]: Leaving directory '/home/joaot/elements'
  CXXLD    qt/elements-qt.exe
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-walletview.o):walletview.cpp:(.rdata$.refptr._ZN15TransactionView16staticMetaObjectE[.refptr._ZN15TransactionView16staticMetaObjectE]+0x0): undefined reference to `TransactionView::staticMetaObject'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-walletview.o):walletview.cpp:(.rdata$.refptr._ZN15TransactionView7messageERK7QStringS2_j[.refptr._ZN15TransactionView7messageERK7QStringS2_j]+0x0): undefined reference to `TransactionView::message(QString const&, QString const&, unsigned int)'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-overviewpage.o):overviewpage.c:(.rdata$.refptr._ZTV25TransactionOverviewWidget[.refptr._ZTV25TransactionOverviewWidget]+0x0): undefined reference to `vtable for TransactionOverviewWidget'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactiontablemodel.o):transactiontablemodel.cpp:(.rdata$.refptr._ZTV21TransactionTableModel[.refptr._ZTV21TransactionTableModel]+0x0): undefined reference to `vtable for TransactionTableModel'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactiontablemodel.o):transactiontablemodel.cpp:(.rdata$.refptr._ZN21TransactionTableModel16staticMetaObjectE[.refptr._ZN21TransactionTableModel16staticMetaObjectE]+0x0): undefined reference to `TransactionTableModel::staticMetaObject'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactionview.o):transactionview.cpp:(.text+0x1532): undefined reference to `TransactionView::message(QString const&, QString const&, unsigned int)'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactionview.o):transactionview.cpp:(.text+0x170d): undefined reference to `TransactionView::message(QString const&, QString const&, unsigned int)'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactionview.o):transactionview.cpp:(.text+0x3034): undefined reference to `TransactionView::bumpedFee(uint256 const&)'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactionview.o):transactionview.cpp:(.rdata$.refptr._ZN15TransactionView9bumpedFeeERK7uint256[.refptr._ZN15TransactionView9bumpedFeeERK7uint256]+0x0): undefined reference to `TransactionView::bumpedFee(uint256 const&)'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactionview.o):transactionview.cpp:(.rdata$.refptr._ZN15TransactionView13doubleClickedERK11QModelIndex[.refptr._ZN15TransactionView13doubleClickedERK11QModelIndex]+0x0): undefined reference to `TransactionView::doubleClicked(QModelIndex const&)'
/usr/bin/x86_64-w64-mingw32-ld: qt/libbitcoinqt.a(libbitcoinqt_a-transactionview.o):transactionview.cpp:(.rdata$.refptr._ZTV15TransactionView[.refptr._ZTV15TransactionView]+0x0): undefined reference to `vtable for TransactionView'
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:7567: qt/elements-qt.exe] Error 1
make[2]: Leaving directory '/home/joaot/elements/src'
make[1]: *** [Makefile:22421: all-recursive] Error 1
make[1]: Leaving directory '/home/joaot/elements/src'
make: *** [Makefile:827: all-recursive] Error 1