5.12 fails to compile on macOS 10.12.6

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -c -include.pch/debug/QtCore_debug/objective-c++_x86_64 -pipe -stdlib=libc++ -g -std=c++1y -fapplication-extension  -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk -mmacosx-version-min=10.12 -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -Winconsistent-missing-override -Wobjc-interface-ivars -Wobjc-method-access -Wobjc-multiple-method-names -Werror=unguarded-availability -Werror=unguarded-availability-new -Werror=unsupported-availability-guard -fPIC -DQT_NO_USING_NAMESPACE -DQT_NO_FOREACH -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_BUILD_CORE_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 -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DPCRE2_CODE_UNIT_WIDTH=16 -I. -Iglobal -I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4 -I../3rdparty/sha3 -I../3rdparty -I../3rdparty/double-conversion/include -I../3rdparty/double-conversion/include/double-conversion -I../3rdparty/forkfd -I../3rdparty/tinycbor/src -I../../include -I../../include/QtCore -I../../include/QtCore/5.12.2 -I../../include/QtCore/5.12.2/QtCore -I.moc/debug -I.tracegen/debug -I../3rdparty/pcre2/src -I../../mkspecs/macx-clang -o .obj/debug/qcore_mac_objc.o kernel/qcore_mac_objc.mm
kernel/qcore_mac_objc.mm:147:13: error: use of undeclared identifier 'backtrace_from_fp'
        if (backtrace_from_fp(__builtin_frame_address(0), &frame, 1))
            ^