This branch contains changes required to embed png into VTK. This includes changes made primarily to the build system to allow it to be embedded into another source tree as well as a header to facilitate mangling of the symbols to avoid conflicts with other copies of the library within a single process.
- Ignore whitespace errors for VTK's commit checks.
- Integrate the CMake build with VTK's module system.
- Avoid processor-specific optimizations (NEON, SSE, etc.)
- Mangle all exported symbols to have a
vtkpng_prefix.