Unable to run a C++ LIbrary, getting a lot of errors

[kpkale]

I have a C++ Library that gets compiled with a Borland C++ Compiler. I am required to use this library in the program that I am building using QTCreator and C++. However, when i include the header file of the library in my program and compile, I get a lot of errors.
What kind of changes are required to be made in a BC++ code for use with QT.

[Lykurg]

First you should tell us, what errors do you get. How should we know...

I guess you are using gcc thus you also have to build the library with gcc.

[amleto]

borland? I wonder how many tens of years old that is. Get a compiler that is actually compliant to recent standards.