[fpc-pascal] Version 1.9.6[??] on the Mac.
jonas at zeus.ugent.be
Sun Jan 16 12:38:30 CET 2005
On 15 jan 2005, at 17:43, Peter H.M. Brooks wrote:
> It looks very much as if the code for the 1.9.6 compiler on Windows/XP
> and Mac/OS is different - in fact it looks as if the Mac version is an
> earlier release.
They are compiled from the same sources.
> How could this have happened? Should I download the compiler and
> compile it from scratch, or is it likely that somebody will fix the
I will have a look at it.
> While on the subject, of compiling the compiler. I have a dual 64-bit
> CPU on my Mac. Would it be possible to compile the compiler to run in
> 64bit mode and be multi-threaded - and produce code that is 64bit and
There is no 64 bit powerpc code generator in the compiler yet. A
compiler also does not "produce multi threaded code". There is some
research on the topic of automatically turning single threaded code
into multi threaded code, but generally I do not know of any production
compiler which can automatically turn a generic single threaded program
into a multi threaded program.
In the foreseeable future, it's still the programmer which has to
explicitly write multi threaded code. This is far from trivial, and as
a result writing both highly efficient and 100% multi threaded code is
very difficult for all but the most simple examples.
> I know that Tiger will provide full 64bit operation (at least that is
No, it's not promised and it won't. No 64 bit versions of the standard
GUI libraries will be provided, only of most (command line) generic
unix libraries. See http://developer.apple.com/macosx/tiger/64bit.html
> but, in theory, the compiler should be able to produce 64bit code now.
> If not, how long before this will be possible? Is it difficult to do?
I don't know when I will start with it, I'm currently still fixing
things for the 32 bit code generator. Also, there are two different 64
bit things you can do: 64 bit mathematics, and 64 bit memory spaces.
The former can already be done under Mac OS X 10.3 (but is not
supported by our compiler yet either), the latter will only be possible
from 10.4 onwards (and initially not for GUI programs, as mentioned
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