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To: "gcc-help@gcc.gnu.org" Subject: Troubles with C++20 modules and CMake Thread-Topic: Troubles with C++20 modules and CMake Thread-Index: Adpkw1rB89ELUadDT/2u1cl3CVJX0w== Date: Wed, 21 Feb 2024 12:42:08 +0000 Message-ID: Accept-Language: cs-CZ, en-US Content-Language: cs-CZ X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_b1c9b508-7c6e-42bd-bedf-808292653d6c_Enabled=true; MSIP_Label_b1c9b508-7c6e-42bd-bedf-808292653d6c_SetDate=2024-02-21T12:42:05Z; MSIP_Label_b1c9b508-7c6e-42bd-bedf-808292653d6c_Method=Standard; MSIP_Label_b1c9b508-7c6e-42bd-bedf-808292653d6c_Name=b1c9b508-7c6e-42bd-bedf-808292653d6c; MSIP_Label_b1c9b508-7c6e-42bd-bedf-808292653d6c_SiteId=2882be50-2012-4d88-ac86-544124e120c8; MSIP_Label_b1c9b508-7c6e-42bd-bedf-808292653d6c_ActionId=36b785c8-a3e2-4022-8dbb-36c1fc2ac4f9; MSIP_Label_b1c9b508-7c6e-42bd-bedf-808292653d6c_ContentBits=3 dlp-product: dlpe-windows dlp-version: 11.10.200.16 dlp-reaction: no-action authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=skoda-auto.cz; 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charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Hello, I am trying to use C++20 modules with CMake and GCC, but I cannot se= em to be able to get it to work. I am getting the following error message w= hen 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? Thank you, Jakub Hlusi=E8ka INTERNAL --_000_AM8PR05MB79054A6DA87ABB08449F8BFA81572AM8PR05MB7905eurp_--