BA - tried making the smallest compiler i could (~5400 Bytes) | Operating System Development | Page 1

gleaming orchid Feb 15, 2026, 12:17 AM

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YouTube

Random Dumbass 🏳️‍⚧️

I wrote a compiler for a custom programming language in C, the finished binary is 5344 bytes when stripped.

its a very basic programming language, based on B
#osdev #programming #compiler_design

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GitHub

GitHub - JoshuaTheThe/BA

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the language is a simple dailect of B* (kinda not really)

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the implementation is in around ~780 lines

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and it uses no external libs, not even LibC (cus i want to port it to my OS)

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i'll probably extend it a bit and then use it as the shell language lol

red timber Feb 15, 2026, 12:22 AM

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interesting!

umbral grove Feb 15, 2026, 2:15 AM

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WOW

hollow granite Feb 15, 2026, 12:29 PM

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Why the implicit int return type everywhere?

gleaming orchid Feb 15, 2026, 1:07 PM

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because yesh

#BA - tried making the smallest compiler i could (~5400 Bytes)