Re: Python recompile

On 15/03/2025 10:42, Muttley@dastardlyhq.com wrote:

On Sat, 15 Mar 2025 10:18:49 +0000
bart <bc@freeuk.com> gabbled:

There /is/ no build system speak of. Compiling any program even of 100 modules is this invocation:
>
   mm prog                # prog.m is the lead module

 So whats the equivalent of fork() in your language then and how does it work
on Windows?

I've no idea, but this is little to do with a language, or how it is built.
How does it work in C on Windows? Whatever it ends up calling, any language including mine can do the same.

 

Or you can forget about building completely, and just run direct from source code:
>
   mm -r prog             # (via native code)
   mm -i prog             # (interpreted)
>
If there's a simpler way to compile or run source code, I'd like to know what it is!

 python3 <filename>

This is running a scripting language. Build processes are associated with languages that normally compile to native code, which are much more complicated especially with no module scheme.
Still, I'll play along: if I copy mm.exe to ms.exe (the name is significant) then I can run from source like this:
    ms file              # run file.m
In Python you need:
    python file.py
Note the '.py' extension if you want to use that. Note also that 'ms' compiles to native code first.
I can go one step further:
    c:\qx>ms qc hello
    Hello, World! 15-Mar-2025 11:38:38
Here, I'm running a project 'qc' from source code. QC is the lead module of my 250KB scripting language interpreter.
So ms is compiling a 40Kloc program in dozens of source files, into memory, and running it on an input 'hello.q'. The whole thing took 0.1 seconds.
When you can do:
     gcc -run python.c hello.py
then come back and we'll talk. That is, doing a fresh compilation of Python from source code, and doing it fast enough that you can do it everytime you want to run a Python program.

C is a little different because the language doesn't allow for automatic discovery of modules. But the extra info needed is simple: a list of files.

 Finding dynamic libraries is job of the linker and loader, not the C compiler

Who's talking about dynamic libraries? If your C program consists of 100 different modules, this is about finding out what the other 99 modules are, given the first one.