Re: glib(win32) without libffi

[Hans Breuer <hans breuer org>]

At 29.07.2012 13:38, Colin Walters wrote:
> On Sat, 2012-07-28 at 11:55 +0200, Hans Breuer wrote:
> > One of the showstoppers for the win32/msvc build of GLib since 2.29 is the
> > dependency to libffi, which barely builds with msvc. In fact I was not able
> > to produce any working version with/for msvc6 (finally clashing runtime
> > versions).
>
> Someone has *had* to have done this before.Did you try asking on the libffi list or anything?
Yes, anything, e.g.:
https://mail.gnome.org/archives/gtk-devel-list/2011-August/msg00014.html

But I can build it, too. I'm just not able to produce an ABI compatible 
version of GLib with msvc. Like I did for the last eleven years [1].

> > Are there any objections to include the new fallback implementation with
> > standard GLib?
>
> It's a lot of code duplication in a *very* tricky code base.  See
> https://bugzilla.gnome.org/show_bug.cgi?id=659881 for example.
>
> Your code in a quick inspection looks like it only handles x86-32
Yes, that's what I tested.

> Windows; what about Win64?
For win64 this would be only of educational interest, because there is no 
msvc compiler targeting msvcrt.dll (outside of some platfrom SDKs).

> And it'd also need work for Windows/ARM, etc.
Wont check before I can buy interesting hardware for winrt ;)
My guess is there will be much more showstoppers, though.

> Please - try harder to get libffi to build?
As I said, I can build libffi with msvc(9). And if I would drop the msvc6 
build (pure msvcrt.dll dependency) I could even link it.

Given that fixing the showstopper is not deemed to be useful, I should 
probably withhold my other fixes as well:

d152bc4 win32: More symbols to be exported from gio
2cd230c win32: Update msvc build files
47adfd1 win32: Use HAVE_UNISTD_H for gio/tests too.
95381dc gccism: put variable declaration at the beginning of a block
a8706ac win32: work around msvc compiler deficiency
ab3dfc0 c99ism: avoid variadic macro COLLECT
d0f00b9 win32: avoid windows.h in glib-init.h
cd38dcf win32: define _WIN32_WINNT for TryEnterCriticalSection
4a42751 win32: Use HAVE_UNISTD_H
f0c38ed win32: Fallback implementation for Interlocked(And|Or|Xor)
5420ec4 win32: HW_PROFILE_INFOA needs _WIN32_WINNT 0x0501 defined
f5eee7e win32: don't use G_DEFINE_TYPE_WITH_CODE without code
46e74a7 win32: Updated msvc build files
ab494ba win32: Update msvc infrastructure for gdk-pixbuf split and 
cairo-gobject
0a1f33c g99ism: move declaration to the beginning of the block

Regards,
	Hans

[1] 
http://git.gnome.org/browse/glib/commit/?id=d1a05f990e35d83e20f62b303fe14d836f779921

-------- Hans "at" Breuer "dot" Org -----------
Tell me what you need, and I'll tell you how to
get along without it.                -- Dilbert