This is a GCC cross-compiler targeting NetBSD. It uses the patchset from NetBSD’s pkgsrc repository, rebased on top of the latest Binutils and GCC.
The current release is based on GCC 15 and supports cross-compiling for the x86, x86_64, and aarch64 targets. The toolchain includes support for the C and C++ frontends.
You can download the prebuilt toolchains from the releases page.