Qt and Boost in the same C++ program?

[TriKri]

But no libraries are needed here.

What do you mean? I'm including libraries in both cases, so don't I need libraries in both cases? Or do you mean that if I include these files before I include the boost libraries, I won't get these compile errors?

Hmm...? You know there is no "C++ runtime" only "C runtime", right? g++ is just a compiler, it doesn't implement functions. C runtime does (i.e. (g)libc on gcc unix platforms).

I don't really know what MinGW Runtime means, but I found this about it:

The MinGW Runtime is the package of headers and libraries that describe the API for the MSVCRT and the mingwex extension functions to help support C99.

Does MinGW Runtime also help support C++98? For example, stdint.h is a C99 standard library, but it is not implemented in the C++98 standard. In fact, if you include stdint.h in a visual studio project, it won't build because the VC++ compiler will not find the file. I thought it might have been the same thing with swprintf, but apparently not. Maybe stdint.h is just not implemented in C runtime?

[wysota]

What do you mean? I'm including libraries in both cases, so don't I need libraries in both cases?

I mean you don't need any libraries to use swprintf().

For example, stdint.h is a C99 standard library, but it is not implemented in the C++98 standard.

stdint.h is a header file, not a library. It's neither included in C99 nor in C++98 because it's a file. C99 and C++98 define the syntax and semantics of the language, not any files.

[TriKri]

I mean you don't need any libraries to use swprintf().

Can you please explain this a bit more carefully? Okay, you don't need any library to use swprintf(), but you have included libraries anyway, why? Please explain this to me so I understand what you mean.

[wysota]

Can you please explain this a bit more carefully? Okay, you don't need any library to use swprintf(), but you have included libraries anyway, why?

.h files are not libraries. They are declarations of functions, other symbols and sets of macros. You could as well simply copy their required contents to your main implementation file:

extern int printf (const char *, ...);
 
int main() {
  printf("%i\n", 42);
  return 0;
};

extern int printf (const char *, ...);

int main() {
  printf("%i\n", 42);
  return 0;
};

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[TriKri]

Aha, ok, my fault! I mean: Seems like boost doesn't include all the headers needed?

[wysota]

I won't argue with that but maybe you just need to set some macro or something like this. swprintf() is declared in wchar.h, if that's of any help to you.

[TriKri]

It was just a guess, I have no idea actually why it's complaining. I think that use of functions like this should be hidden from the user, and I shouldn't have to mind about where different functions are located just because boost cannot find them, so I hope it's not the meaning that I should include these headers myself.

According to the top of this page, boost it may or may not work on the MSYS command shell, but I guess that doesn't mean that boost won't support mingw even if the normal command shell is used. I did have MSYS installed, although I compiled from the normal command shell. I don't know if this could have affected in any way.

Thanks anyway. Maybe mingw works with boost after all, just that I have done something wrong.

-Kristofer