[HarfBuzz] Compilation Troubles on Solaris 10

[Behdad Esfahbod]

Hi Richard,

After you have got it all working, send me the total patch and I'll try to
cherrypick the bits that make sense.

behdad

On 13-04-09 03:41 PM, Richard Wordingham wrote:
> On Tue, 09 Apr 2013 14:08:52 -0400
> Behdad Esfahbod <behdad at behdad.org> wrote:
> 
>> On 13-04-09 07:40 AM, Steven R. Loomis wrote:
>>> (meant to reply all)
>>>
>>> Richard,
>>>  GCC 3.4.3 is about 9 years old- http://gcc.gnu.org/gcc-3.4/
>>>  Would it be possible to rebuild gcc, even in a user account?
> 
> I'll take that as 'Code is correct, compiler is wrong, not worth
> changing code to accommodate it.'  The differences are just the
> compile-time checking associated with the copying of pointers and
> references.
> 
> I did wonder if C++ may have evolved between compiler builds.  I'm
> worried that I can't work out why the code is correct and the compiler
> is wrong.
> 
>>> Could be endian problems? 
> 
> Unlikely with the compiler.
> 
> I seem to have got the basic code working, though my solution to the
> FreeType problem may be horribly inefficient.  (I haven't tried hb-view
> on Solaris yet.)
> 
>> Looks like Richard's problem was with pkg-config and as a result not
>> detecting FreeType.
> 
> That's the problems that manifests itself at run-time, though the
> message on running configure should have been heeded.  The issues are:
> 
> 1) Configure insists on at least version 0.20 of pkg-config.  It
> seems that a new, now used option was added then (or started working).
> I think that autoconf deals with that, but there may be a problem with
> old versions of pkg-config and old versions of autoconf together.
> Which is definitive, configure or configure.ac?  Patching configure is
> simple; I just change one of the many occurrences of '0.20' to '0.15'.
> I haven't yet tested patching configure.ac.
> 
> 2) FreeType has two sets of version numbers.  Version 2.1.9 (at least,
> as identified by FT_Library_Version()) identifies itself as 9.7.3 in
> freetype2.pc, and Version 2.3.11 identifies itself there as Version
> 9.22.3. The utility pkg-config extracts the number from freetype2.pc,
> and compares this against 2.3.8.  I don't yet know what the
> corresponding version number in freetype2.pc is, so I have no patch to
> offer. (Presumably I can find this out by downloading Version 2.3.8.)
> 
> 3) The check for Version 2.3.8 for Freetype may be because that is when
> the newer, faster interface for extracting advance widths started
> working.  The interface exists in Version 2.3.7, so it may have been
> buggy, or perhaps the cut-off point is for some other reason.  The
> interface does not exist in Version 2.1.9, or, at least, not in the
> header files.
> 
> 4) I have a working patch (well, tested horizontally, not yet tested
> vertically) that will choose the old interface for FreeType Version
> 2.1.9 and choose the new interface for FreeType Version 2.3.11.
> 
> 5) Bizarrely, the new interface seems not to be called to extract the
> advance widths!  More precisely, the function
> hb_ft_get_glyph_h_advance() in hb-ft.cc  does not seem to be called
> within the shaper.  (It does get called when I invoke method
> get_glyph_h_advance() between calls of hb_ft_font_set_funcs() and
> hb_shape().)  I'm going to have to step through the code with the
> debugger, because this makes no sense whatsoever.
> 
> Richard.
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-- 
behdad
http://behdad.org/