matplotlib-users

[Matplotlib-users] solaris compilation

[Kuzminski, S. R <SKu...@fa...>]

I'm trying to install 0.53.1 on solaris and am getting this compile
error.  Looks like it needs the file ft2build.h, but I don't see it
anywhere.. =20

=20

$ python setup.py build

...

In file included from src/_backend_agg.cpp:3:

src/ft2font.h:7:22: ft2build.h: No such file or directory
<--------missing file error here

src/ft2font.h:8:10: #include expects "FILENAME" or <FILENAME>

src/ft2font.h:9:10: #include expects "FILENAME" or <FILENAME>

src/ft2font.h:10:10: #include expects "FILENAME" or <FILENAME>

In file included from src/_backend_agg.cpp:3:

src/ft2font.h:29: 'FT_Face' is used as a type, but is not defined as a
type.

src/ft2font.h:31: 'FT_Matrix' is used as a type, but is not defined as a
type.

src/ft2font.h:32: 'FT_Vector' is used as a type, but is not defined as a
type.

src/ft2font.h:33: 'FT_Error' is used as a type, but is not defined as a
type.

src/ft2font.h:34: parse error before `[' token

src/ft2font.h:35: parse error before `[' token

error: command 'gcc' failed with exit status 1

bash-2.03$

=20

=20

thanks,

Stefan

[Matplotlib-users] solaris compilation

[Kuzminski, S. R <SKu...@fa...>]

small bug..  line 237 in text.py, needs a str() around the 'legal' tuple
in the exception.

=20

bigger potential bug..

=20

I got it to go on Solaris, but I keep hitting a seg fault on the
creation of the FT2Font object around line 261 in backend_agg.py.  It
ran when I put a print in before the creation of the FT2Font object.
That's right.  Something spooky like that means to me that there is a
bug in ft2font.c where some variable is not initialized correctly and
the extra print leaves the right patch of initialized memory so it runs.
Only way to really nail something like that is with a Purify or Valgrind
like tool.=20

=20

S

Re: [Matplotlib-users] solaris compilation

[John H. <jdh...@ac...>]

>>>>> "Kuzminski," == Kuzminski, Stefan R <SKu...@fa...> writes:

    Kuzminski> I got it to go on Solaris, but I keep hitting a seg
    Kuzminski> fault on the creation of the FT2Font object around
    Kuzminski> line 261 in backend_agg.py.  It ran when I put a print
    Kuzminski> in before the creation of the FT2Font object.  That's
    Kuzminski> right.  Something spooky like that means to me that
    Kuzminski> there is a bug in ft2font.c where some variable is not
    Kuzminski> initialized correctly and the extra print leaves the
    Kuzminski> right patch of initialized memory so it runs.  Only
    Kuzminski> way to really nail something like that is with a
    Kuzminski> Purify or Valgrind like tool.

Thanks for the additional information.  This one is a little harder
for me to debug since I can't replicate it.  I recently rewrote the
agg backend using cxx which is really nice, and a hell of a lot easier
than doing the extension code by hand.  I may do the same for
ft2font.

In the meantime, if you have some free time to either run a debugger
or just insert some sporadic prints in newFT2FontObject that would
help narrow where the segfault is occurring.

Something like


static FT2FontObject *
newFT2FontObject(PyObject *args)
{
  int error;
  char* facefile;
  printf("initializing\n");
  if (! _initLib) { 
    error = FT_Init_FreeType( &_ft2Library ); //initialize library 

    if (error) {
      PyErr_SetString(PyExc_RuntimeError, 
		      "Could not find initialize the freetype2 library");
      return NULL;
    }
    _initLib = 1;

  }

  printf("parsing args\n");  
  if (!PyArg_ParseTuple(args, "s:FT2Font", &facefile))
    return NULL;

  
  printf("creating object\n");  
  FT2FontObject *self;
  self = PyObject_New(FT2FontObject, &FT2Font_Type);
  self->image.buffer = NULL;
  self->text = NULL;
  self->num_glyphs = 0;
  FT2Font_clear(self);

  printf("new face\n");  
  error = FT_New_Face( _ft2Library, facefile, 0, &self->face );
  if (error == FT_Err_Unknown_File_Format ) {
    
    set_error(PyExc_RuntimeError,
	      "Could not load facefile %s; Unknown_File_Format", facefile);
    return NULL;
  }
  else if (error == FT_Err_Cannot_Open_Resource) {
    
    set_error(PyExc_RuntimeError,
	      "Could not open facefile %s; Cannot_Open_Resource", facefile);
    return NULL;
  }
  else if (error == FT_Err_Invalid_File_Format) {
    
    set_error(PyExc_RuntimeError,
	      "Could not open facefile %s; Invalid_File_Format", facefile);
    return NULL;
  }
  else if (error) {
    set_error(PyExc_RuntimeError,
	      "Could not load face file %s; freetype error code %d", facefile, error);
    return NULL;

  }
  printf("setting size\n");  
  // set a default fontsize 12 pt at 72dpi
  error = FT_Set_Char_Size( self->face, 12 * 64, 0, 72, 72 );
  if (error) {
    PyErr_SetString(PyExc_RuntimeError, 
		    "Could not set the fontsize");
    return NULL;
  }
  

  printf("initing dict\n");  
  if (self == NULL)
    return NULL;
  self->x_attr = NULL;

  printf("getting ps name\n");    
  // set some face props as attributes
  const char*  ps_name;
  ps_name = FT_Get_Postscript_Name( self->face );
  if ( ps_name == NULL )
    ps_name = "UNAVAILABLE";

  printf("setting attributes\n");        
  SETATTR(self, FT2Font_setattr, "postscript_name", PyString_FromString, ps_name);
  SETATTR(self, FT2Font_setattr, "num_faces",       PyInt_FromLong,      self->face->num_faces);
  SETATTR(self, FT2Font_setattr, "family_name",     PyString_FromString, self->face->family_name);
  SETATTR(self, FT2Font_setattr, "style_name",      PyString_FromString, self->face->style_name);
  SETATTR(self, FT2Font_setattr, "face_flags",      PyInt_FromLong,      self->face->face_flags);
  SETATTR(self, FT2Font_setattr, "style_flags",     PyInt_FromLong,      self->face->style_flags);
  SETATTR(self, FT2Font_setattr, "num_glyphs",      PyInt_FromLong,      self->face->num_glyphs);
  SETATTR(self, FT2Font_setattr, "num_fixed_sizes", PyInt_FromLong,      self->face->num_fixed_sizes);
  SETATTR(self, FT2Font_setattr, "num_charmaps",    PyInt_FromLong,      self->face->num_charmaps);


  printf("checking scalable\n");        
  int scalable;
  scalable = FT_IS_SCALABLE( self->face );
  SETATTR(self, FT2Font_setattr, "scalable", PyInt_FromLong, scalable);

  if (scalable) {
    SETATTR(self, FT2Font_setattr, "units_per_EM", PyInt_FromLong, self->face->units_per_EM);

  printf("building bbox\n");        
    PyObject *bbox = Py_BuildValue
      ("(llll)", 
       self->face->bbox.xMin, self->face->bbox.yMin, 
       self->face->bbox.xMax, self->face->bbox.yMax );
    SETATTR_PYOBJ(self, FT2Font_setattr, "bbox",  bbox);
    SETATTR(self, FT2Font_setattr, "ascender",            PyInt_FromLong, self->face->ascender);
    SETATTR(self, FT2Font_setattr, "descender",           PyInt_FromLong, self->face->descender);
    SETATTR(self, FT2Font_setattr, "height",              PyInt_FromLong, self->face->height);
    SETATTR(self, FT2Font_setattr, "max_advance_width",   PyInt_FromLong, self->face->max_advance_width);
    SETATTR(self, FT2Font_setattr, "max_advance_height",  PyInt_FromLong, self->face->max_advance_height);
    SETATTR(self, FT2Font_setattr, "underline_position",  PyInt_FromLong, self->face->underline_position);
    SETATTR(self, FT2Font_setattr, "underline_thickness", PyInt_FromLong, self->face->underline_thickness);
    
  }
  printf("made it!\n");        
  return self;
}

Re: [Matplotlib-users] solaris compilation

[John H. <jdh...@ac...>]

>>>>> "Kuzminski," == Kuzminski, Stefan R <SKu...@fa...> writes:

    Kuzminski> I'm trying to install 0.53.1 on solaris and am getting
    Kuzminski> this compile error.  Looks like it needs the file
    Kuzminski> ft2build.h, but I don't see it anywhere..

You need to make sure a recent version of freetype (we recommend 2.1.7
or later) is installed on your system (and zlib and png for that
matter).  If it is installed, you need to make sure you add the base
install dir to your basedir list in setupext.py.  Eg if it is
installed to /some/dir/freetype2 you need to add /some/dir to
basedir['sunos5'] in that file; (I'm assuming sys.platform returns
'sunos5').

Where do the GNU tools for solaris go by default; something like
/freeware?  I'm referring to the collection from
http://wwws.sun.com/software/solaris/freeware/download.html. I can't
recall but whatever the base install dir is, we should add this dir to
the default sunos5 basedir list.

Finally, please submit back the required changes you made to
seteupext.py (if any) so we can fix this.

Hell, you got gdmodule compiled on win32; matplotlib on solaris should
be a cake walk :-)

Thanks,
John Hunter