Hi,
Thanks for reporting this, we have fixed the missing “additional linker inputs” handling in this build: http://sysprogs.com/files/tmp/VisualGDB-5.2.16.1483.msi
The behavior with additional linker inputs is by design as both library names and additional linker inputs are saved in the same field in the QT project file. As names with spaces are generally not supported very well by GNU tools, VisualGDB does not support them either (you can still use them by editing the Qt project file manually, but VisualGDB GUI won’t show it correctly).