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For the development of HarfBuzz, the Microsoft shaping technology, Uniscribe,
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as a widely used and tested shaper is used as more-or-less OpenType reference
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implementation and that specially is important where OpenType specification
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is or wasn't that clear. For having access to Uniscribe on Linux/macOS these
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steps are recommended:
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You want to follow the 32bit instructions. The 64bit equivalents are included
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for reference.
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1. Install Wine.
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- Fedora: `dnf install wine`.
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2. Install `mingw-w64` compiler.
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- Fedora, 32bit: `dnf install mingw32-gcc-c++`
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- Fedora, 64bit: `dnf install mingw64-gcc-c++`
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- Debian: `apt install g++-mingw-w64`
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- Mac: `brew install mingw-w64`
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3. If you have drank the `meson` koolaid, look at `.ci/build-win32.sh` to see how to
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invoke `meson` now, or just run that script. Otherwise, here's how to use the
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old trusty autotools instead:
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a) Install dependencies.
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- Fedora, 32bit: `dnf install mingw32-glib2 mingw32-cairo mingw32-freetype`
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- Fedora, 64bit: `dnf install mingw64-glib2 mingw64-cairo mingw64-freetype`
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b) Configure:
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- `NOCONFIGURE=1 ./autogen.sh && mkdir winbuild && cd winbuild`
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- 32bit: `../mingw-configure.sh i686`
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- 64bit: `../mingw-configure.sh x86_64`
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c) Build as usual:
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- make
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d) Configure your wine to find system mingw libraries. See:
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https://fedoraproject.org/wiki/MinGW/Configure_wine
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Now you can use `hb-shape` by `(cd win32build/util && wine hb-shape.exe)`
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but if you like to shape with the Microsoft Uniscribe:
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4. Bring a 32bit version of `usp10.dll` for yourself from `C:\Windows\SysWOW64\usp10.dll` of your
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Windows installation (assuming you have a 64-bit installation, otherwise
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`C:\Windows\System32\usp10.dll`) that it is not a DirectWrite proxy
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([for more info](https://en.wikipedia.org/wiki/Uniscribe)).
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Rule of thumb, your `usp10.dll` should have a size more than 500kb, otherwise
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it is designed to work with DirectWrite which Wine can't work with its original one.
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You want a Uniscribe from Windows 7 or older.
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Put the DLL in the folder you are going to run the next command,
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5. `WINEDLLOVERRIDES="usp10=n" wine hb-shape.exe fontname.ttf -u 0061,0062,0063 --shaper=uniscribe`
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(`0061,0062,0063` means `abc`, use test/shaping/hb-unicode-decode to generate ones you need)
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When you have built that, you can test HarfBuzz's native shaper against Uniscribe
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following these instructions:
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https://github.com/harfbuzz/harfbuzz/issues/3671
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