How are the Pascal units generated?

[rchastain2]

Hello Jarrod.

Thank you for this great project.

I stole your code (from CPas.miniaudio.pas unit) to make a simple command-line music player for Free Pascal and Linux. (I attach the code in case you would wish to take a look.)

Recently I saw that there was a new version of miniaudio. I tried to use the new version with the same Pascal code. It still compiles, but it doesn't work: I get an error 217 when I launch the player. I wasn't able to find where the error came from.

If you don't mind, would it be possible to know how you generate your Pascal units? I would like to learn to do it by myself, with FPC if possible (since I am on Linux and don't have Delphi).

Best regards.

Roland

miniaudio-musicplayer.zip

[jarroddavis68]

Hi Roland,

Thanks for reaching out, and very cool that you’re using the code to build a music player on Linux with FPC! 👍🏿

Regarding your question: I use C++Builder Modern to compile the .o file and Chet to generate the Pascal headers. Chet has my custom post-processing support, used to clean up the output. That’s how the CPas.miniaudio.pas unit was built.

Good news: everything you need to regenerate or update the bindings is already included in the distro. I even wrote a standalone utility to clean up the generated headers — it’s the same toolchain I use myself. Just run aaa_git_miniaudio.cmd (calls git), which pulls down the latest version of miniaudio, and then C++Builder will recompile it.

Unfortunately, it’s all Windows-based at the moment, using C++Builder to make the .o files. If you have sometime to compile the .c files and create an .o you should be good to good.

Best regards,
Jarrod

[rchastain2]

Great! Thank you very much for the detailed answer.