I've started to integrate Valve's Steam API with our multiplayer game but have immediately run into problems of this sort:

steam\sdk\public\steam\steamtypes.h(44): error C2371: 'uint32' : redefinition; different basic types

since Steam defines types with the same naming scheme as the game engine. (neither utilize namespaces)

Example Steam: typedef unsigned __int32 uint32;

Example Engine: typedef unsigned long uint32

I'm unsure how to go about resolving this.

Anyone have a solution?

Thanks

The answer is that the engine's typedef is plain wrong (long is no way guaranteed to be 32 bit). Do you have any way of influencing that part? Is it your own engine or thrid party.

Add typedef inside a namespace :

namespace Engine
{
  // 8-bit size types.
  typedef int8_t Int8;
  typedef uint8_t UInt8;

  // 16-bit size types.
  typedef int16_t Int16;
  typedef uint16_t UInt16;

  // 32-bit size types.
  typedef int32_t Int32;
  typedef uint32_t UInt32;

  // 64-bit size types.
  typedef int64_t Int64;
  typedef uint64_t UInt64;

} // namespace Engine

Why do you want your own typedefs anyway? There are standard library headers that do exactly that, in a safe way.

Btw, whoever downvoted me, could you please be so kind as to tell me what you thought was wrong with my post? Thanks!

every known, modern compiler appears to stick to unsigned long = 4 chars.

That's not true. Most 64 bit compilers have sizeof(long) == 8...

Try this in basically every GCC or clang version on a 64 bit system:

int main() {
  printf("%zu\n", sizeof(long));
}