[LLVMdev] n00b question: From module/bitcode to Mach-O dylib file directly?

[Luke Evans]

Thanks John.

I had passed over ExecutionEngine as it looked like it offered a JIT.   
Maybe there's more to it than meets the (hasty) eye though.

I'm interested in getting a native image.  Ultimately, I'd like to do  
things like emitting Objective-C IMPs and building Objective-C classes  
around them.
However, I'm going one step at a time (there's probably much to learn  
and maybe gotchas to discover before I get to this).
To begin with, I figured I'd try to get a Mach-O file written out,  
dload'ed and then make a regular C call to a loaded function.

So, I'll take a look at ExecutionEngine, but I'm still curious if I'm  
currently able to emit Mach-O dylibs directly from the LLVM tool  
chain, or if I have to go a little more round-the-houses (perhaps  
emitting .s and then using platform tools to get to the dylib).

-- lwe


On 15-Mar-09, at 6:09 PM, John McCall wrote:
> Are you just loading functions into the current process?  There's no
> need
> to create temporary object files and dynamically link them in;  LLVM  
> is
> perfectly capable of assembling a function in memory.  Look up the
> docs for llvm::ExecutionEngine::create and go from there.
>
> John.
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