On Wednesday, 25 April 2012 at 15:20:31 UTC, Don Clugston wrote:
On 25/04/12 17:05, Paulo Pinto wrote:
On Wednesday, 25 April 2012 at 14:32:13 UTC, Alex Rønne
Petersen wrote:
On 25-04-2012 15:06, Kagamin wrote:
On Tuesday, 24 April 2012 at 10:29:52 UTC, Alex Rønne
Petersen wrote:
The point is just that: Right now I can write assembly that
will work
on GDC, LDC, and DMD on non-Windows. It will not work for
DMD on
Windows. Something has to change here.
If it doesn't work on Windows, it should be versioned out.
What we have:
http://dlang.org/version.html#PredefinedVersions - versions
for LDC,
GDC, DMD and Windows - all what you want.
Yes, I added them. :)
You're missing the point. D is providing (or trying to
provide) a
standard inline assembler, but calling conventions are not
standardized enough for it to be useful across compilers. If
you're
writing inline assembly because you *have* to, you don't just
"version
it out", you have to write different logic for different
compilers,
which is a maintenance nightmare.
This is exactly what C++ gets blamed for, yet most people fail
to
realize that the situation is common to all languages that
generate
native code.
No, it's totally the fault of C++. C++ failed to specify it, so
everyone did something different. Then you get this very
unfortunate mindset where everyone is so used to it, they don't
find it unacceptable any more.
As far as I am aware this is the same in all languages. I am not
aware of any ISO or ANSI language standard that specifies ABIs.
The only reason it works out for C, is that the C ABI is
actually the OS
ABI, as such all C compilers tend to have a common ABI.
Not true. The ABI for Win32 is __stdcall, not C. Pascal and
Fortran calling conventions were always well standardized, too.
For me this is the same, as all C compilers in Win32 are required
to generate __stdcall entry points. Plus since C is nothing more
than a glorified assembler, there is not much to speak about an
ABI.
In a way the operating system can be seen as the C language
runtime
(I am exaggerating a bit here).
Taking your language's example, which two FORTRAN or Pascal
compilers,
in a given OS, are able to mix object or library files?
I am just defending that I should be able to combine a mix of
libraries
compiled with DMD, LDC and GDC, without having to worry which is
which.
--
Paulo
