Hello,

in the FASM folder is provided the OpenGL library. But is it possible to use OpenCV, and other C libraries. Via dll I imagine? Where can we find them?

Yes. You can download the source codes or pre-compiled DLLs (if there are any) from their websites.

Really, just this? I thought there were versions specially designed for the FASM assembler.
Thanks in this one

You'll need the C header files to find out the public interface, i.e. the C function prototypes and data structures. The tricky part to watch out for are the C macros.

But they are all in C. So you'll need to translate them into asm includes. There are tools for this but not 100% accurate.

It's a lot of work. Fun, if you have the time.

Do the C compilers save the preprocessed output to a file? If they do then the macros would be expanded and removed. That might it it easier to translate to fasm.

Yes, there's a compiler option to do that but the output will be huge and probably unreadable. I suppose with a C-to-Inc tool, it might be manageable.

I usually study the example C source codes that come with the C library to figure out how it works. Then I would write many small C codes that call the library functions. After that, stepping through the programs in a debugger or disassembling the programs should reveal all I need to know.

GCC/TCC have the -E option to preprocess a file, dunno about other compilers.

But yeah the output will be huge due to headers, it's not hard to filter it with sed or whatever though, to only show you lines from the start of your file onwards etc.