Microsoft Visual TrueType(VTT) is a professional-level tool for graphically instructing TrueType and OpenType fonts. For details on the tool visit https://docs.microsoft.com/en-us/typography/tools/vtt/.
Visual TrueType compiles binary from source formats included in the fonts that are instructed with Visual TrueType.
This repo contains source for VTTCompile which is a standalone tool can compile the high level VTT Talk source to a lower level assembler source and then can assemble that source to cooresponding binaries. Since VTT can also generate variation 'cvar' for variable fonts, VTTCompile can also compile the 'cvar' from source format. VTTCompile also includes file management functions to prepare a font for production and to strip source formats for a final 'ship' font binary.
The interface for VTTCompile is similar to VTTShell which is included in Visual TrueType download package.
The source code in the repo is mostly a subset of the source code of Visual TrueType as needed to produce VTTCompile. However not all of the source code included in the repo is necessary to produce VTTCompile but we optomized for including as complete source files as possible to make future maintenance easier.
For documentation of the Visual TrueType source formats visit https://docs.microsoft.com/en-us/typography/tools/vtt/tsi-tables.
In the "vttcompile" folder, there is a Visual Studio Solution for Microsoft Visual Studio users, and an Xcode Project For Apple Xcode users.
For unix users (including Linux and Apple command-line), cd src && make should work. You
can also cross-compile for 32-bit windows with cd src && make CXX=i686-w64-mingw32-c++,
for 64-bit windows with cd src && make CXX=x86_64-w64-mingw32-c++; and use clang,
enabling all the recommended warnings with cd src && make CXX=clang++ CXXFLAGS=-Wall.
Build as 32-bit on 64-bit systems with cd src && make CXXFLAGS=-m32.
You may need to do cd src && make CXXFLAGS="-std=c++14" to explicitly request
support for the 2014 ISO C++ standard.
The minimum compiler requirement is support for the 2014 ISO C++ standard plus amendments.
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