Solo enables static Linux binaries to load host GPU drivers via custom .so loader

Solo introduces a custom ELF loader and glibc-ABI bridge that enables a fully static musl binary to dlopen host-installed GPU drivers. This removes the usual need for containers, AppImage, or a second libc in the process when graphics acceleration is required. The result is a single file executable that can still use the host’s Vulkan or OpenGL driver.

To use Solo, developers must link their static build against the Solo library (or run the provided prebuilt demo) and compile with a static toolchain such as IX. The build process requires a C/C++ compiler and Python 3 for the demo, but no additional runtime dependencies. Code must avoid glibc symbols not covered by the shim, because unsupported functions generate explicit stub failures instead of silent corruption.

Solo’s ELF loader currently handles only x86-64 and aarch64 binaries, leaving other architectures unsupported. The glibc-ABI bridge implements a subset of the glibc interface; calls to missing symbols trigger generated stubs that abort with the exact symbol and version. Consequently, any driver or library that depends on an unsupported glibc function will cause the loader to fail at runtime.

If a host GPU driver or its indirect dependencies rely on glibc features absent from the shim, Solo cannot load them and the executable will fail to initialize graphics. The approach also assumes that the host’s driver ABI remains compatible with the musl runtime via the bridge; future glibc changes could break this compatibility. In such cases developers would need to revert to a dynamic build or containerized deployment to regain GPU access.