1This file describes various problems that have been encountered in 2compiling, installing and running FreeType 2. Suggestions for 3additions or other improvements to this file are welcome. 4 5---------------------------------------------------------------------- 6 7Running Problems 8================ 9 10 11* Some Type 1, Multiple Masters, and CID-keyed PostScript fonts aren't 12 handled correctly. 13 14----- 15 16Of course, there might be bugs in FreeType, but some fonts based on 17the PostScript format can't be handled indeed. The reason is that 18FreeType doesn't contain a full PostScript interpreter but applies 19pattern matching instead. In case a font doesn't follow the standard 20structure of the given font format, FreeType fails. A typical example 21is Adobe's `Optima' font family which contains extra code to switch 22between low and high resolution versions of the glyphs. 23 24It might be possible to patch FreeType in some situations, though. 25Please report failing fonts so that we investigate the problem and set 26up a list of such problematic fonts. 27 28 29* Why do identical FreeType versions render differently on different 30 platforms? 31 32----- 33 34Different distributions compile FreeType with different options. The 35developer version of a distribution's FreeType package, which is 36needed to compile your program against FreeType, includes the file 37ftoption.h. Compare each platform's copy of ftoption.h to find the 38differences. 39 40 41---------------------------------------------------------------------- 42 43 44Compilation 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 58The 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 63or 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