ClausKlein
(Claus Klein)
1
clang++ --version
Ubuntu clang version 21.1.7 (++20251127113503+9ed1927442a4-1~exp1~20251127113518.64)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-21/bin
clang++ -print-file-name=libc++.modules.json
/lib/x86_64-linux-gnu/libc++.modules.json
clang++ -print-file-name=libstdc++.modules.json
libstdc++.modules.json
cmake --version
cmake version 4.2.0
CMake suite maintained and supported by Kitware (kitware.com/cmake).
ninja --version
1.13.0
cmake --preset dev --fresh --log-level=VERBOSE
CMake Warning (dev) at cmake/prelude.cmake:58 (if):
Preset CMake variables:
BUILD_MCSS_DOCS:BOOL="FALSE"
BUILD_SHARED_LIBS:BOOL="TRUE"
CMAKE_BUILD_TYPE="Release"
CMAKE_CONFIGURATION_TYPES="RelWithDebInfo;Release;Debug"
CMAKE_CXX_EXTENSIONS:BOOL="TRUE"
CMAKE_CXX_FLAGS_DEBUG="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -fcf-protection=full -fstack-clash-protection -Wall -Wextra -Wpedantic -Wno-conversion -Wno-sign-conversion -Wcast-qual -Wformat=2 -Wundef -Wno-float-equal -Wshadow -Wcast-align -Wunused -Wnull-dereference -Wdouble-promotion -Wno-implicit-fallthrough -Wextra-semi -Woverloaded-virtual -Wnon-virtual-dtor -Wno-old-style-cast"
CMAKE_CXX_STANDARD="23"
CMAKE_CXX_STANDARD_REQUIRED:BOOL="TRUE"
CMAKE_EXE_LINKER_FLAGS_DEBUG="-Wl,--allow-shlib-undefined,--as-needed,-z,noexecstack,-z,relro,-z,now"
CMAKE_EXPORT_COMPILE_COMMANDS:BOOL="TRUE"
CMAKE_INSTALL_PREFIX:PATH="/__w/cmake-init-modules/cmake-init-modules/stagedir"
uninitialized variable 'CMAKE_CXX_STDLIB_MODULES_JSON'
Call Stack (most recent call first):
CMakeLists.txt:4 (include)
This warning is for project developers. Use -Wno-dev to suppress it.
CMAKE_MESSAGE_LOG_LEVEL="VERBOSE"
CMAKE_PREFIX_PATH:STRING="/__w/cmake-init-modules/cmake-init-modules/stagedir"
CMAKE_SHARED_LINKER_FLAGS_DEBUG="-Wl,--allow-shlib-undefined,--as-needed,-z,noexecstack,-z,relro,-z,now"
CMAKE_VERIFY_INTERFACE_HEADER_SETS:BOOL="TRUE"
cmake-init-modules_DEVELOPER_MODE:BOOL="TRUE"
Preset environment variables:
CPM_USE_LOCAL_PACKAGES="OFF"
-- CXXFLAGS=-stdlib=libc++
-- The CXX compiler identification is Clang 21.1.7
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/clang++ - skipped
-- Detecting CXX compile features
CMake Warning (dev) at /github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/Compiler/CMakeCommonCompilerMacros.cmake:248 (cmake_language):
CMake's support for `import std;` in C++23 and newer is experimental. It
is meant only for experimentation and feedback to CMake developers.
Call Stack (most recent call first):
/github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/CMakeDetermineCompilerSupport.cmake:113 (cmake_create_cxx_import_std)
/github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/CMakeTestCXXCompiler.cmake:83 (CMAKE_DETERMINE_COMPILER_SUPPORT)
CMakeLists.txt:7 (project)
This warning is for project developers. Use -Wno-dev to suppress it.
-- Detecting CXX compile features - done
-- CMAKE_CXX_COMPILER_IMPORT_STD=23;26
-- CMAKE_CXX_MODULE_STD=ON
-- ALGO_USE_MODULES=ON
-- CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES=/usr/lib/llvm-21/include/c++/v1;/usr/lib/llvm-21/lib/clang/21/include;/usr/local/include;/usr/include/x86_64-linux-gnu;/usr/include
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY
CMake Error at /__w/cmake-init-modules/cmake-init-modules/build/dev/CMakeFiles/4.2.0/CMakeCXXCompiler.cmake:111 (target_sources):
Cannot find source file:
/lib/share/libc++/v1/std.cppm
Call Stack (most recent call first):
/__w/cmake-init-modules/cmake-init-modules/build/dev/CMakeFiles/CMakeScratch/TryCompile-mFgvN7/CMakeLists.txt:2 (project)
CMake Error at /__w/cmake-init-modules/cmake-init-modules/build/dev/CMakeFiles/4.2.0/CMakeCXXCompiler.cmake:103 (add_library):
No SOURCES given to target: __cmake_cxx23
Call Stack (most recent call first):
/__w/cmake-init-modules/cmake-init-modules/build/dev/CMakeFiles/CMakeScratch/TryCompile-mFgvN7/CMakeLists.txt:2 (project)
CMake Error at /__w/cmake-init-modules/cmake-init-modules/build/dev/CMakeFiles/4.2.0/CMakeCXXCompiler.cmake:127 (add_library):
No SOURCES given to target: __cmake_cxx26
Call Stack (most recent call first):
/__w/cmake-init-modules/cmake-init-modules/build/dev/CMakeFiles/CMakeScratch/TryCompile-mFgvN7/CMakeLists.txt:2 (project)
CMake Error at /github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/Internal/CheckSourceCompiles.cmake:104 (try_compile):
Failed to generate test project build system.
Call Stack (most recent call first):
/github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/Internal/CheckCompilerFlag.cmake:18 (cmake_check_source_compiles)
/github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/CheckCompilerFlag.cmake:124 (cmake_check_compiler_flag)
/github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/GenerateExportHeader.cmake:515 (check_compiler_flag)
/github/home/cmake/cmake-4.2.0-linux-x86_64/share/cmake-4.2/Modules/GenerateExportHeader.cmake:693 (_test_compiler_hidden_visibility)
CMakeLists.txt:43 (generate_export_header)
-- Configuring incomplete, errors occurred!
make: *** [GNUmakefile:58: .init] Error 1
Error: Process completed with exit code 2.