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
