Re: fontconfig error

[Sergei Steshenko <sergstesh yahoo com>]

--- David Neèas (Yeti) <yeti physics muni cz> wrote:

> On Sun, Aug 27, 2006 at 02:23:38PM -0700, Sergei Steshenko wrote:
> > 
> > I tried to compile fontconfig, and a part of fontconfig, namely fcfreetype.c file,
> > wont'c compile.
> > 
> > Here is how the '#include ...' part of the file looks:
> > 
> > 
> > "
> > ...
> >      47 #include <stdlib.h>
> >      48 #include <stdio.h>
> >      49 #include <string.h>
> >      50 #include "fcint.h"
> >      51 #include <ft2build.h>
> >      52 #include FT_FREETYPE_H
> >      53 #include FT_INTERNAL_OBJECTS_H
> >      54 #include FT_TRUETYPE_TABLES_H
> >      55 #include FT_SFNT_NAMES_H
> >      56 #include FT_TRUETYPE_IDS_H
> >      57 #include FT_TYPE1_TABLES_H
> >      58 #include FT_INTERNAL_STREAM_H
> >      59 #include FT_INTERNAL_SFNT_H
> >      60 #include FT_INTERNAL_TRUETYPE_TYPES_H
> >      61 #if HAVE_FT_GET_X11_FONT_FORMAT
> >      62 #include FT_XFREE86_H
> >      63 #endif
> >      64
> >      65 #if HAVE_FT_GET_BDF_PROPERTY
> >      66 #include FT_BDF_H
> >      67 #include FT_MODULE_H
> > ...
> > ".
> > 
> > As one can see, in addition to traditional
> > 
> > #include <file>
> > 
> > or
> > 
> > # include "file"
> > 
> > there are lines like these:
> > 
> >      52 #include FT_FREETYPE_H
> >      53 #include FT_INTERNAL_OBJECTS_H
> >      54 #include FT_TRUETYPE_TABLES_H
> >      55 #include FT_SFNT_NAMES_H
> >      56 #include FT_TRUETYPE_IDS_H
> >      57 #include FT_TYPE1_TABLES_H
> >      58 #include FT_INTERNAL_STREAM_H
> >      59 #include FT_INTERNAL_SFNT_H
> >      60 #include FT_INTERNAL_TRUETYPE_TYPES_H
> >      61 #if HAVE_FT_GET_X11_FONT_FORMAT
> >      62 #include FT_XFREE86_H
> >      63 #endif
> > .
> > 
> > These lines are peculiar in that they have neither '"', nor '<', '>' to
> > enclose the file names
> 
> ISO C allows
> 
>     1. #include <systemheader.h>
>     2. #include "localheader.h"
>     3. #include MACRO
> 
> where MACRO has to -- after all expansions -- give one of
> the former two cases.  The FT_* macros are defined in
> freetype/config/ftheader.h and freetype/internal/internal.h.
> 
> Except that the internal headers no longer exist in FreeType
> 2.2+.  Neither are defined the corresponding FT_INTERNAL_*
> macros.  When a FT_* macro is undefined none of the cases
> 1.-3. occurs, the preprocessor sees literal
> 
>     #include FT_INTERNAL_OBJECTS_H
> 
> and complains.  Thus you get errors on lines correspoding to
> inclusion of internal headers (through FT_INTERNAL_*
> macros).
> 
> Yeti
> 
> 
> --
> Anonyms eat their boogers.
> _______________________________________________
> gtk-list mailing list
> gtk-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-list
> 


David,

thanks for your clarifications.

I understand that macros are first expanded, and thus, if they
expand to a legal construct, i.e. "filename" or <filename>, then
the compiler will accept them.

Now here are your statements in a rephrased form - correct me if I'm wrong

1) items like FT_FREETYPE_H, i.e. items without the encapsulating '"' or
'<', '>' are meant to be macros;

2) the above macros used to be defined in

freetype/config/ftheader.h
freetype/internal/internal.h

files;

3) the above .h files are not within the source tarball anymore - here is
my check of this statement:

"
[31] 0:19 sergei comp home net:/mnt/removable4/sergei/build_work/build> find fontconfig-2.3.2
-name "*.h"
fontconfig-2.3.2/src/fcint.h
fontconfig-2.3.2/fontconfig/fontconfig.h
fontconfig-2.3.2/fontconfig/fcfreetype.h
fontconfig-2.3.2/fontconfig/fcprivate.h
fontconfig-2.3.2/fc-case/fccase.h
fontconfig-2.3.2/fc-case/fccase.tmpl.h
fontconfig-2.3.2/fc-lang/fclang.h
fontconfig-2.3.2/fc-lang/fclang.tmpl.h
fontconfig-2.3.2/fc-glyphname/fcglyphname.h
fontconfig-2.3.2/fc-glyphname/fcglyphname.tmpl.h
[32] 1:06 sergei comp home net:/mnt/removable4/sergei/build_work/build> 
"

- indeed they are not in the tarball.

Now, taking your statement:  

"
When a FT_* macro is undefined none of the cases
1.-3. occurs, the preprocessor sees literal

    #include FT_INTERNAL_OBJECTS_H

and complains.  Thus you get errors on lines correspoding to
inclusion of internal headers (through FT_INTERNAL_*
macros).
"

may I rephrase it this way:

fontconfig-2.3.2.tar.gz can NOT be compiled because some header files
(namely freetype/config/ftheader.h, freetype/internal/internal.h) are
missing in it

?

If so, is my earlier statement, that fontconfig released a tarball which
can not be compiled, correct ?

Thanks,
  Sergei.

Applications From Scratch: http://appsfromscratch.berlios.de/

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