Re: [ft] cannot open some fonts on mac and linux

[mpsuzuki]

Hi,

On Thu, 20 Sep 2007 14:57:50 +0200
Riccardo Cohen <address@hidden> wrote:
>I ran ftdump with this flag and the font was open correctly. my program 
>could now read all suitcase.

Good. I guess 2 dfonts (Keyboard.dfont and LastResort.dfont)
cannot be loaded, because they are designed for special purpose
(see freetype2-x.y.z/src/gxvalid/README), but others are
loadable. If you find any unloadable fonts, please let me
know.

>But does this mean that I will have problem and conflicts between 
>quickdraw and freetype ? Is there any documentation about the troubles 
>you spoke about ?

One of the popular trouble is... let me tell a lengthy story.

There are people who build Unix free softwares for MacOS
and distribute their prebuilt binaries. Some of them use
the development environment including libfreetype.dylib
(MacOS shared library) built without Carbon framework,
because they want to do as they do on other standard POSIX
systems without proprietary Carbon framework.

When their binaries are executed, dynamic linker doesn't
search Carbon framework at all, because the developers
don't use Carbon framework when the developers link the
program.

If I insert Carbon-dependent libfreetype.dylib into the
runtime libraries, how the binary is loaded?
My libfreetype.dylib wants the dynamic linker to resolve
QuickDraw functions in Carbon framework when the binary
is loaded. But the dynamic linker doesn't search Carbon
framework, because the program was not linked with Carbon
framework. As a result, all Carbon functions in my
libfreetype.dylib is claimed as unresolvable, and the
program cannot be executed. There are several ugly hack
to cover such unresolvable function issues, but no general
solution working for all Mac OS X.

If you install 2 different libfreetype.dylib on your
system and tune DYLD_LIBRARY_PATH carefully for each
programs, this trouble can be avoided, but it won't be
pragmatic.

--

The most beautiful solution is Carbon-free suitcase font
support. Masatake Yamato had already implemented initial 
codes, and the enhancement and completion of it is my task,
but it's not finished yet. Sorry again for your inconvenience.

Regards,
mpsuzuki

>address@hidden wrote:
>> Hi,
>> 
>> I'm current maitainer of MacOS specific part of
>> FreeType2, sorry for your inconvenience.
>> 
>> On Thu, 20 Sep 2007 12:25:01 +0200
>> Riccardo Cohen <address@hidden> wrote:
>>> MAC
>>> ---
>>> some basic fonts (/Library/Fonts/Arial) are not open, and I have about 
>>> 50% of font files that fail to open with FT_New_Face(). It seems that it 
>>> is all mac font suitcases... which are used by all native softwares.
>> 
>> Recent FreeType2 does not enable the support code
>> for suitcase font format (to avoid binary incompatibility
>> troubles by unexpected QuickDraw framework).
>> Please try "configure --with-old-mac-fonts".
>> 
>> Regards,
>> mpsuzuki
>> 
>
>-- 
>
>Riccardo Cohen
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-- 
鈴木