On Wed, 21 Feb 2024 at 12:43, Hlusicka, Jakub (Ceske vysoke uceni technicke v Praze -...) via Gcc-help <gcc-help@xxxxxxxxxxx> wrote: > > Hello, I am trying to use C++20 modules with CMake and GCC, but I cannot seem to be able to get it to work. I am getting the following error message when running CMake to generate build files: > > CMake Error in core/CMakeLists.txt: > The target named "core" has C++ sources that may use modules, but the > compiler does not provide a way to discover the import graph dependencies. > See the cmake-cxxmodules(7) manual for details. Use the > CMAKE_CXX_SCAN_FOR_MODULES variable to enable or disable scanning. > > The versions of the software I am using: > GCC version: 13.2.1 > CMake version: 3.28.3 > > Is this feature currently not supported, or am I doing something wrong? As it says at https://cmake.org/cmake/help/latest/manual/cmake-cxxmodules.7.html#compiler-support you need GCC 14 (which won't be released for a few months) to use CMake's modules support.
