be67c4ef33
(Direct_Move_Orig, Direct_Move_Orig_X, Direct_Move_Orig_Y): New functions. Similar to Direct_Move, Direct_Move_X, and Direct_Move_Y but without touching. (Compute_Funcs): Use new functions. (Round_None, Round_To_Grid, Round_To_Half_Grid, Round_Down_To_Grid, Round_Up_To_Grid, Round_To_Double_Grid, Round_Super, Round_Super_45): Fix rounding of value zero. (DO_DIV): Don't use TT_MULDIV. (Ins_SHC): This instruction actually touches the points. (Ins_MSIRP): Fix undocumented behaviour. * src/truetype/ttinterp.h (TT_ExecContextRec): Updated. * docs/VERSION.DLL: Updated. * src/base/ftobjs.c (FT_Set_Char_Size): Make metrics->x_scale and metrics->y_scale really precise. (FT_Load_Glyph): Update computation of linearHoriAdvance and linearVertAdvance. * src/true/type/ttinterp.c (Update_Max): Use FT_REALLOC.
110 lines
3.6 KiB
Plaintext
110 lines
3.6 KiB
Plaintext
Due to our use of "libtool" to generate and install the FreeType 2
|
|
libraries on Unix systems, as well as other historical events, it is
|
|
generally very difficult to know precisely which release of the font
|
|
engine is installed on a given system.
|
|
|
|
This file tries to explain why and to document ways to properly detect
|
|
FreeType on Unix.
|
|
|
|
|
|
1. Version & Release numbers
|
|
----------------------------
|
|
|
|
For each new public release of FreeType 2, there are generally *three*
|
|
distinct "version" numbers to consider:
|
|
|
|
* The official FT2 release number, like 2.0.9, or 2.1.3.
|
|
|
|
* The libtool (and Unix) specific version number, like "9.2.3". This
|
|
is what "freetype-config --version" will return.
|
|
|
|
* The platform-specific shared object number, used for example when
|
|
the library is installed as "/usr/lib/libfreetype.so.6.3.2".
|
|
|
|
The platform-specific number is, unsurprisingly, platform-specific and
|
|
varies with the operating system you are using (several variants of
|
|
Linux, FreeBSD, Solaris, etc.). You should thus _never_ use it, even
|
|
for simple tests.
|
|
|
|
The libtool-specific number does not equal the release number but is
|
|
tied to it.
|
|
|
|
The release number is available at *compile* time through the following
|
|
macros defined in FT_FREETYPE_H:
|
|
|
|
- FREETYPE_MAJOR : major release number
|
|
- FREETYPE_MINOR : minor release number
|
|
- FREETYPE_PATCH : patch release number
|
|
|
|
See below for a small autoconf fragment.
|
|
|
|
The release number is also available at *runtime* through the
|
|
"FT_Library_Version" API. Unfortunately, this one wasn't available or
|
|
working correctly before the 2.1.3 official release.
|
|
|
|
|
|
2. History
|
|
----------
|
|
|
|
The following table gives, for each official release, the corresponding
|
|
libtool number, as well as the shared object number found on _most_
|
|
systems, but not all of them:
|
|
|
|
release libtool so
|
|
-------------------------------
|
|
2.1.8 9.6.3 6.3.6
|
|
2.1.7 9.5.3 6.3.5
|
|
2.1.6 9.5.3 6.3.5
|
|
2.1.5 9.4.3 6.3.4
|
|
2.1.4 9.3.3 6.3.3
|
|
2.1.3 9.2.3 6.3.2
|
|
2.1.2 9.1.3 6.3.1
|
|
2.1.1 9.0.3 ?
|
|
2.1.0 8.0.2 ?
|
|
2.0.9 9.0.3 ?
|
|
2.0.8 8.0.2 ?
|
|
2.0.4 7.0.1 ?
|
|
2.0.1 6.1.0 ?
|
|
|
|
The libtool numbers are a bit inconsistent due to the library's history:
|
|
|
|
- 2.1.0 was created as a development branch from 2.0.8 (hence the same
|
|
libtool numbers).
|
|
|
|
- 2.0.9 was a bug-fix release of the "stable" branch, and we
|
|
incorrectly increased its libtool number.
|
|
|
|
- 2.1.4 is still in the "development" branch, however it is stable
|
|
enough to be the basis of an upcoming 2.2.0 release.
|
|
|
|
|
|
3. Autoconf Code Fragment
|
|
-------------------------
|
|
|
|
Lars Clausen contributed the following autoconf fragment to detect which
|
|
version of FreeType is installed on a system. This one tests for a
|
|
version that is at least 2.0.9; you should change it to check against
|
|
other release numbers.
|
|
|
|
|
|
AC_MSG_CHECKING([whether FreeType version is 2.0.9 or higher])
|
|
old_CPPFLAGS="$CPPFLAGS"
|
|
CPPFLAGS=`freetype-config --cflags`
|
|
AC_TRY_CPP([
|
|
|
|
#include <ft2build.h>
|
|
#include FT_FREETYPE_H
|
|
#if (FREETYPE_MAJOR*1000 + FREETYPE_MINOR)*1000 + FREETYPE_PATCH < 2000009
|
|
#error Freetype version too low.
|
|
#endif
|
|
],
|
|
[AC_MSG_RESULT(yes)
|
|
FREETYPE_LIBS=`freetype-config --libs`
|
|
AC_SUBST(FREETYPE_LIBS)
|
|
AC_DEFINE(HAVE_FREETYPE,1,[Define if you have the FreeType2 library])
|
|
CPPFLAGS="$old_CPPFLAGS"],
|
|
[AC_MSG_ERROR([Need FreeType library version 2.0.9 or higher])])
|
|
|
|
|
|
--- end of VERSION.DLL ---
|