[gps-users] Mixing Ada and C++

[Emmanuel Briot]

> GPS compile the Ada main file without problem. However when I try to
> build the C++ one it stops immediately saying ""test_pae.cpp" is not a
> source of any project"...

GPS is not a compiler, so it does not compile anything. However, it spawns a
builder, like gnatmake or gprbuild, and that's the tool that prints the error
message you are seeing.
Make sure you are using gprbuild as the printer, gnatmake is an Ada only tool

Emmanuel