Re: [Devel] compiling freetype on 16-bit embedded

[Antoine Leca]

Salut David,
Hi Steve,

David Turner <address@hidden> wrote on Friday, March 08, 2002
1:33 PM
>
> Steve Calzone a écrit :
> >
> > trying to compile for 16-bit embedded system
<couic>
> > Also, could not compile at all unless __STDC__ defined to remove all
> > references to 64-bit types (since I don't seem to have a 64-bit type).
> >
> > I am using the Microsoft (R) C/C++ Optimizing Compiler Version 8.00c.
> >
>   - you don't need 64-bit types to compile and run FreeType. Their use
>     is purely optional, and will actually sometimes result in slightly
>     slower code depending on your compiler/platform !!
>
>     our current "ftconfig.h" test for the __MSC_VER macro to detect the
>     Visual C++ compiler. If it is found, it automatically uses 64-bit ints
>     since these are supposed to be available..

Hmm, I highly suspect we really use _MSC_VER (only one leading _).
If so, we can improve a bit our process.

_MSC_VER is defined by Microsoft C compiler since v.6 (around 1989).
Its "value" (this is a string, of course) is v00, where v is the number
version.
So version 6 (whatever the target, BTW) was defined as 600; C/C++ 7.0
was 700. Straightforward so far.
The additional thing to know is that the product have been renamed by
marketing department, but (hopefully) the compiler version number stayed.
So Visual C++ 1.x (being 1.0 for Windows ie the 16-bit compiler, 1.0 for
Windows NT ie the 32-bit compiler or 1.5x for Windows) is really version 8.0
(hence Steve's version number); and _MSC_VER is 800 for this version.

Alike, VC++ 2 have 900, VC++ 4 (marketing did strike again, there is no
VC++3) have 1000, VC++ 5 have 1100 and VC++ 6 have 1200 (and I expect
VC7 to have 1300, but I did not check that).

The additional information is that VC++ 2 does have a __int64 (and __int128)
type, while VC++ 1.x (any version, include the one for NT) does not. So if
we
are to use _MSC_VER to toggle in the __int64 type, we should restrict
ourselves
to it being defined *and* >= 900.


Antoine



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