The EDG C++ Compiler Frontend has been Open Sourced

John Spicer announced that the EDG C++ compiler front-end project will be open sourced and managed by the non-profit C++ Alliance, with source code now hosted on the edgcpp GitHub account. Edison Design Group, a US company that has built compiler front-ends since 1988 and whose technology is used in Intel's C++ compiler, Microsoft's VC++, and NVIDIA's CUDA compiler, decided last year to shut down the company in 2026 and transition to an open source model. The move matters for the wider open source C++ ecosystem, particularly GCC and LLVM's Clang, because EDGCPP supports bleeding-edge features and has been used in demanding commercial applications.

Recently John Spicer of the EDG C++ compiler front-end project announced https://edgcpp.org/announcement/ that the project will be made open source, from now on managed by the non-profit C++ Alliance. Related source code can be found on the GitHub account https://github.com/edgcpp . The Edison Design Group EDG https://en.wikipedia.org/wiki/Edison Design Group is a US company which has made compiler front-ends since 1988, previously also for Java and Fortran. They are used in the Intel C++ compiler, Microsoft’s VC++, NVIDIA’s CUDA compiler, as well as many other commercial products. Last year the decision was made to shutdown the company in 2026 and transition to an open source model, with the details outlined on the EDGCPP site https://edgcpp.org/ . Although far from the only C++ front-end, EDGCPP will be very interesting still for supporting bleeding-edge features and having been used in such wide-ranging, demanding applications by a host of commercial customers. For most of us C++ developers our contact with it will have been via the MSVC and Intel Compiler Collection tooling, but of course it’s just one part of the entire toolset. We’re looking forward to seeing what this means for the wider open source C++ ecosystem, especially as it pertains to GCC and LLVM’s Clang.