Compiler errors when a C++ function is imported

When I was compiling a quasar code which imported a c++ code, I encountered these errors (Ubuntu 19.04):

1- Error:

"Quasar/include/quasar_host.cpp:37:10: fatal error: glib.h: No such file or directory"

Solution:

Installing "libglib2.0-dev" package solved the problem.

2- Error:

/Quasar/include/quasar_rt_bindings.h:169:7: error: ‘cuda_execution_stream’ was not declared in this scope (cuda_execution_stream*)stream, T()...);

Solution:

I removed the pointer casting.

3- Error:

/Quasar/include/quasar_host.cpp:361:28: error: ‘LPSTR’ has not been declared bool(Type_GetClassInfo)(LPSTR moduleName, LPSTR* typeName, qhandle typeHandle, int *flags,

Solution:

The error was disappeared by changing LPSTR to LPTSTR.