Hi,
There are 2 problems in your project.
1. Seems your project was created with a old version of sgcWebSockets (I get an error of a published property which is now only public) and your project links to Delphi Packages, but you must install CBuilder package instead. So, uninstall first sgcWebSocketsD10_3 and install sgcWebSocketsC10_3.
2. Edit your POSBra.cbproj to delete references to these packages. At this moment, you are linking to:
<AllPackageLibs>rtl.lib;fmx.lib;sgcWebSocketsD10_3.lib;IndyProtocols.lib;IndyCore.lib;IndySystem.lib;inet.lib;dbrtl.lib;vclimg.lib;vcl.lib;vclx.lib</AllPackageLibs>
And you must linkt to these:
<AllPackageLibs>rtl.lib;fmx.lib;sgcWebSocketsC10_3.lib;IndyProtocols.lib;IndyCore.lib;IndySystem.lib;inet.lib;dbrtl.lib</AllPackageLibs>
With these modifications I've been able to compile your projects for Android. The problem you refer to embarcadero discussion was fixed installing CBuilder packages (and some more which were not related to this issue).
Kind Regards,
Sergio