"clang: error: invalid deployment target for -stdlib=libc++ (requires OS X 10.7 or later)" when building Qt Quick Application

[12:53:03] <micurtis> after my macbook had some updates, i now get "clang: error: invalid deployment target for -stdlib=libc++ (requires OS X 10.7 or later)" when building a qt application. i've rebuilt the qt version i'm using to build but it didn't help
[12:53:17] <micurtis> is this something we need to fix in qt or is it user error?
[12:54:58] <micurtis> reduced compile output: /usr/bin/clang++ -O2 -Wall -Wextra -target x86_64-apple-macosx10.6-macho -F/Users/mitch/dev/qt5-slate-fw/qtbase/lib [snip] -I/Users/mitch/dev/slate/lib -std=c+11 -stdlib=libc+ -o /Users/mitch/dev/slate-qt5_slate_fw-Release/qtc_qt5_slate_fw_Release/app.7d104347/3a52ce780950d4d9/qrc_fonts.cpp.o -c /Users/mitch/dev/slate-qt5_slate_fw-Release/qtc_qt5_slate_fw_Release/app.7d104347/qrc_fonts.cpp

The following code provided by Christian is a workaround:

cpp.minimumMacosVersion: "10.7"