ISPC Language support

[Lectem (Clément Grégoire)]

For anybody finding this thread, CMake 3.19 now has native support for ISPC! Though only for make and ninja

CMake 3.19.0-rc1 is ready for testing

I am proud to announce the first CMake 3.19 release candidate. https://cmake.org/download/ Documentation is available at: https://cmake.org/cmake/help/v3.19 Release notes appear below and are also published at https://cmake.org/cmake/help/v3.19/release/3.19.html Some of the more significant changes in CMake 3.19 are: “cmake(1)” and “cmake-gui(1)” now recognize “CMakePresets.json” and “CMakeUserPresets.json” files. The “Xcode” generator now uses the Xcode “new build system” when gen…