You actually can, by using dlsym(3) to resolve the symbol, cast it to the 
appropriate function pointer and call it.

For example:

int (*myfunc)(int, int) = dlsym(RTLD_DEFAULT, myfunc_name);
if (myfunc)
    printf(“%d”, myfunc(2, 3));
else
    fprintf(stderr, “error: cannot resolve symbol: %s”, myfunc_name);

This works on all POSIX operating systems.

On Oct 18, 2013, at 11:34, Charles Srstka <cocoa...@charlessoft.com> wrote:

> On Oct 17, 2013, at 9:48 PM, Shane Stanley <sstan...@myriad-com.com.au> wrote:
> 
>> is there any way to build a call to a C function on the fly? I mean 
>> something like pass a string to a method, and have it call the function of 
>> that name?
> 
> No. That's an Objective-C feature that's not present in standard C.
> 
> Charles
> 
> 
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