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  1. This  file describes various  problems that  have been  encountered in
  2. compiling,  installing  and   running  FreeType  2.   Suggestions  for
  3. additions or other improvements to this file are welcome.
  4.  
  5. ----------------------------------------------------------------------
  6.  
  7. Running Problems
  8. ================
  9.  
  10.  
  11. * Some Type 1, Multiple Masters, and CID-keyed PostScript fonts aren't
  12.   handled correctly.
  13.  
  14. -----
  15.  
  16. Of course,  there might be  bugs in FreeType,  but some fonts based on
  17. the  PostScript  format can't  be handled indeed.  The reason  is that
  18. FreeType  doesn't contain a full  PostScript  interpreter  but applies
  19. pattern matching instead.  In case a font doesn't follow the  standard
  20. structure of the given font format, FreeType fails.  A typical example
  21. is Adobe's `Optima'  font family which  contains extra code  to switch
  22. between low and high resolution versions of the glyphs.
  23.  
  24. It might be  possible to patch  FreeType in  some situations,  though.
  25. Please report failing fonts so that we investigate the problem and set
  26. up a list of such problematic fonts.
  27.  
  28.  
  29. * Why do identical FreeType  versions render differently  on different
  30.   platforms?
  31.  
  32. -----
  33.  
  34. Different distributions compile FreeType with different options.   The
  35. developer  version of  a  distribution's  FreeType  package,  which is
  36. needed to compile  your program  against FreeType,  includes the  file
  37. ftoption.h.  Compare  each platform's  copy of ftoption.h to  find the
  38. differences.
  39.  
  40.  
  41. ----------------------------------------------------------------------
  42.  
  43.  
  44. Compilation Problems
  45. ====================
  46.  
  47.  
  48. * I get an `internal compilation error' (ICE) while compiling FreeType
  49.   2.2.1 with Intel C++.
  50.  
  51.   This has been reported for the following compiler version:
  52.  
  53.     Intel(R) C++ Compiler for 32-bit applications,
  54.       Version 9.0 Build 20050430Z Package ID: W_CC_P_9.0.019
  55.  
  56. -----
  57.  
  58. The best solution is to update the compiler to version
  59.  
  60.   Intel(R) C++ Compiler for 32-bit applications,
  61.     Version 9.1 Build 20060323Z Package ID: W_CC_P_9.1.022
  62.  
  63. or newer.  If this isn't feasible, apply the following patch.
  64.  
  65.  
  66. --- src/cache/ftcbasic.c 20 Mar 2006 12:10:24 -0000 1.20
  67. +++ src/cache/ftcbasic.c.patched 15 May 2006 02:51:02 -0000
  68. @@ -252,7 +252,7 @@
  69.    */
  70.  
  71.    FT_CALLBACK_TABLE_DEF
  72. -  const FTC_IFamilyClassRec  ftc_basic_image_family_class =
  73. +  FTC_IFamilyClassRec  ftc_basic_image_family_class =
  74.    {
  75.      {
  76.        sizeof ( FTC_BasicFamilyRec ),
  77. @@ -266,7 +266,7 @@
  78.  
  79.  
  80.    FT_CALLBACK_TABLE_DEF
  81. -  const FTC_GCacheClassRec  ftc_basic_image_cache_class =
  82. +  FTC_GCacheClassRec  ftc_basic_image_cache_class =
  83.    {
  84.      {
  85.        ftc_inode_new,
  86.  
  87.  
  88. ----------------------------------------------------------------------
  89.  
  90. --- end of PROBLEMS ---
  91.