build failure with X32 ABI

g++ -c -pipe -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Werror -Wno-error=cpp -Wno-error=deprecated-declarations -Wno-error=strict-overflow -D_REENTRANT -fPIC -DQT_NO_TSLIB -DQT_NO_USING_NAMESPACE -DQT_BUILD_NETWORK_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_CORE_LIB -Wall -Wextra -Werror -Woverloaded-virtual -Wshadow -Wundef -Wnon-virtual-dtor -Wpointer-arith -Wformat-security -Wno-long-long -Wno-variadic-macros -pedantic-errors -Wchar-subscripts -Wold-style-cast -Wcast-align -I/home/rutledge/dev/qt5/qtbase/src/network -I. -I/home/rutledge/dev/qt5/qtbase/src/network/kernel -I../../include -I../../include/QtNetwork -I../../include/QtNetwork/5.8.0 -I../../include/QtNetwork/5.8.0/QtNetwork -I../../include/QtCore/5.8.0 -I../../include/QtCore/5.8.0/QtCore -I../../include/QtCore -I.moc -I/home/rutledge/dev/qt5/qtbase/mkspecs/linux-g++ -DQT_NO_CAST_TO_ASCII=1 -DQT_NO_CAST_FROM_ASCII=1 -DQT_STRICT_ITERATORS -DQT_NO_URL_CAST_FROM_STRING=1 -DQT_NO_CAST_FROM_BYTEARRAY=1 -DQT_NO_KEYWORDS=1 -DQT_USE_QSTRINGBUILDER -DQT_USE_FAST_OPERATOR_PLUS -Dsignals=int -Dslots=int -Demit=public: -Dforeach=public: -Dforever=public: -xc++ /home/rutledge/dev/qt5/qtbase/src/network/access/qabstractnetworkcache.h -o .obj/header_qabstractnetworkcache.o
{standard input}: Assembler messages:
{standard input}:12: Error: cannot represent relocation type BFD_RELOC_X86_64_GOT64 in x32 mode
Makefile:1122: recipe for target '.obj/header_qabstractnetworkcache.o' failed
make: *** [.obj/header_qabstractnetworkcache.o] Error 1