netX Studio offers two default build conditions.
Those are called "debug" and "release" and are part of the hand over parameters between netX Studio and waf.
Via Project > Preferences > C/C++ Build, choosing "[ All configurations ]" in the drop down box and switching to the Behaviour tab, the parameters appear. "${build_type}" specifies one of the conditions from above.
Waf is capable of handling the conditions "debug", "debugrel" and "release". So by editing the build instruction to "--conditions=debugrel" it is possible to get a release build with debug informations.
It is planned to get an additional platforms called "netx90_app", "netx90_app_softfp" and "netx90_app_hardfp" where the compiler specific software and hardware floating point support is compiled in.
The legacy option to modify compiler flags on your own is to open the file "C:\ProgramData\Hilscher GmbH\netX Studio CDT\BuildTools\waf\waflib\extras\hilscher_toolchains.py" and edit in the function "configure_device_netx90" the relevant flags as needed.