如何编译Freetype（2）和Harfbuzz（使用Visual Studio）以使其协同工作？ [英] How to compile Freetype (2) and Harfbuzz (with visual studio) to make them work together?

问题描述

我找到了有关编译与Harfbuzz相关的Freetype的已知问题的良好文档： http://www.gregwesselsels.com/dev/2017/05/02/freetype-harfbuzz.html 和此处 44184890

I have found good documentations on this known problem of compiling Freetype related to Harfbuzz: http://www.gregwessels.com/dev/2017/05/02/freetype-harfbuzz.html and here 44184890

但如今它们似乎已经过时了：带有harfbuzz-1.7.6的freetype-2.9

But they seem obsolet nowadays: freetype-2.9 with harfbuzz-1.7.6

这是我的编译方式：

• 下载自由型tarball


• 提取tarball ...
  
• 打开内部版本\windows\vc2010\freetype.sln


• 它应该已经生成好（作为dll）


• 下载 Harfbuzz


• extrac t压缩文件旁的freetype ...


• 在根目录下运行 cmake ./以获得。 sln


• 它必须已经生成好（作为lib）

• download Freetype tarball
• extract the tarball...
• open builds\windows\vc2010\freetype.sln
• it should already Generate well (as a dll)
• download Harfbuzz
• extract the tarball next to freetype...
• run cmake ./ at root level to obtain a .sln
• it must already Generate well (as lib)

此时，您有2个单独的库无法一起使用，这意味着：

At this point you have 2 separate libs not working together which means:

Freetype将无法打开字体的GSUB脚本。（或者也许我错了）

要这样做，我需要帮助！我还需要确认！！！

To do so, I need help! I also need confirmations!!!

似乎需要在编译时在Freetype中启用Harfbuzz；我发现了一个名为 FT_CONFIG_OPTION_USE_HARFBUZZ

Is seems to be needed to enable the use of Harfbuzz in Freetype at compile time; I have found a precompiler directive called FT_CONFIG_OPTION_USE_HARFBUZZ

的预编译器指令，但是在激活它时，同时使用它们会出现一些编译链接错误在第三个项目中的库：

But when activating it, I have some compile link errors when using both libs in a third project:

autofit.obj : error LNK2019: external symbol not found _hb_ft_font_create referenced in function _af_face_globals_new

很高兴知道， hb_ft_font_create 是harfbuzz中的外部函数。

Good to know, hb_ft_font_create is an extern function in harfbuzz.

所以这似乎是一个周期性的外部问题...我当然一点上都没有好的配置，但是我浏览了许多文档和帮助，发现什么都没有...

So it seems to be a cyclic extern problem... I certainly don't have the good config at a point, but I have browsed many docs and helps, found nothing...

-编辑-
在两个对象都减压后，您通常可以得到这样的树：

-- edit -- After both pojects decompression, you have normaly to obtain such a tree:

.
├── freetype-2.9
│   ├── autogen.sh
│   ├── builds
│   │   ├── ...
│   │   └── windows
│   │       └── vc2010    <<<< The .sln to use is in here
│   ├── CMakeLists.txt    <<<< It is also good to obtain proper sln
│   ├── configure
│   ├── devel
│   │   ├── ft2build.h
│   │   └── ftoption.h
│   ├── include
│   │   ├── freetype
│   │   └── ft2build.h
│   ├── ...
│   ├── objs
│   │   ├── freetype.dll
│   │   ├── freetype.lib
│   │   ├── README
│   │   └── Win32
│   ├── README
│   ├── README.git
│   └── src
└── harfbuzz-1.7.6
    ├── ...
    ├── cmake_install.cmake
    ├── CMakeLists.txt   <<<< The cmake project to obtain proper sln is this one
    ├── compile
    ├── ...
    ├── COPYING
    ├── CTestTestfile.cmake
    ├── Debug
    │   ├── harfbuzz.lib
    │   ├── harfbuzz-subset.lib
    │   └── ...
    ├── depcomp
    ├── docs
    ├── gtk-doc.make
    ├── harfbuzz.sln
    ├── harfbuzz.vcxproj
    ├── ...
    ├── main.dir
    │   └── Debug
    ├── NEWS
    ├── README
    ├── README.python
    ├── RELEASING.md
    ├── replace-enum-strings.cmake
    ├── RUN_TESTS.vcxproj
    ├── RUN_TESTS.vcxproj.filters
    ├── src
    │   ├── *.hh
    │   └── *.cc
    ├── test
    ├── THANKS
    ├── TODO
    ├── util
    └── Win32
        └── Debug

推荐答案

或者像-with-freetype = no --with-fontconfig = no 这样配置harfbuzz以避免循环延迟...我还是这么认为...

Or configure harfbuzz like --with-freetype=no --with-fontconfig=no to avoid circular deps...I think so anyway...

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