error: module file CMakeFiles/__cmake_cxx23.dir/std.pcm cannot be loaded due to a configuration mismatch with the current compilation

[ClausKlein]

bash-5.2$ make
Executing workflow step 1 of 4: configure preset "dev"

Preset CMake variables:

  CMAKE_BUILD_TYPE="Debug"
  CMAKE_CXX_EXTENSIONS="ON"
  CMAKE_CXX_FLAGS="-fstack-protector-strong -Wall -Wextra -Wpedantic -Wno-conversion -Wno-sign-conversion -Wcast-qual -Wformat=2 -Wundef -Wfloat-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="ON"
  CMAKE_EXPORT_COMPILE_COMMANDS="ON"
  CMAKE_INSTALL_PREFIX:PATH="/Users/clausklein/Workspace/cpp/cxx20/fmt-module/stagedir"
  CMAKE_PREFIX_PATH:STRING="/Users/clausklein/Workspace/cpp/cxx20/fmt-module/stagedir"
  FMT_DEVELOPER_MODE="ON"

-- use ccache
-- The CXX compiler identification is Clang 19.1.6
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/local/Cellar/llvm/19.1.6/bin/clang++ - skipped
-- Detecting CXX compile features
CMake Warning (dev) at /usr/local/share/cmake-3.31/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):
  /usr/local/share/cmake-3.31/Modules/CMakeDetermineCompilerSupport.cmake:113 (cmake_create_cxx_import_std)
  /usr/local/share/cmake-3.31/Modules/CMakeTestCXXCompiler.cmake:83 (CMAKE_DETERMINE_COMPILER_SUPPORT)
  CMakeLists.txt:10 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Detecting CXX compile features - done
-- LLVM_ROOT=/usr/local/Cellar/llvm/19.1.6
-- CMAKE_CXX_COMPILER_IMPORT_STD=23;26
-- CPPdefinitions=FMT_MODULE;FMT_IMPORT_STD
-- Found Git: /usr/local/bin/git (found version "2.47.1")
-- CPM: Adding package [email protected] (11.1.1 at /Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5)
-- The C compiler identification is Clang 19.1.6
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/local/opt/llvm/bin/clang - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- CPM: Adding package [email protected] (v1.15.2 at /Users/clausklein/.cache/CPM/googletest/63d366a111d035db343a038884a22e44986dcf4d)
-- Module tests to be built: header-only-test
-- Configuring done (2.1s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/clausklein/Workspace/cpp/cxx20/fmt-module/build/dev

Executing workflow step 2 of 4: build preset "dev"

[10/16] Building CXX object CMakeFiles/fmt.dir/module/fmt.cppm.o
FAILED: CMakeFiles/fmt.dir/module/fmt.cppm.o CMakeFiles/fmt.dir/fmt.pcm 
/usr/local/bin/ccache /usr/local/Cellar/llvm/19.1.6/bin/clang++ -DFMT_IMPORT_STD -DFMT_MODULE -I/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include -fstack-protector-strong -Wall -Wextra -Wpedantic -Wno-conversion -Wno-sign-conversion -Wcast-qual -Wformat=2 -Wundef -Wfloat-equal -Wshadow -Wcast-align -Wunused -Wnull-dereference -Wdouble-promotion -Wno-implicit-fallthrough -Wextra-semi -Woverloaded-virtual -Wnon-virtual-dtor -Wno-old-style-cast -g -std=c++23 -fexperimental-library -stdlib=libc++ -MD -MT CMakeFiles/fmt.dir/module/fmt.cppm.o -MF CMakeFiles/fmt.dir/module/fmt.cppm.o.d @CMakeFiles/fmt.dir/module/fmt.cppm.o.modmap -o CMakeFiles/fmt.dir/module/fmt.cppm.o -c /Users/clausklein/Workspace/cpp/cxx20/fmt-module/module/fmt.cppm
error: GNU extensions was enabled in PCH file but is currently disabled
error: module file CMakeFiles/__cmake_cxx23.dir/std.pcm cannot be loaded due to a configuration mismatch with the current compilation [-Wmodule-file-config-mismatch]
/Users/clausklein/Workspace/cpp/cxx20/fmt-module/module/fmt.cppm:94:2: error: unknown type name 'endif'
   94 | #endif
      |  ^
/Users/clausklein/Workspace/cpp/cxx20/fmt-module/module/fmt.cppm:96:8: error: expected ';' after top level declarator
   96 | #define FMT_EXPORT export
      |        ^
      |        ;
In file included from /Users/clausklein/Workspace/cpp/cxx20/fmt-module/module/fmt.cppm:115:
In file included from /Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/args.h:17:
In file included from /Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/format.h:41:
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:311:35: error: no type named 'enable_if' in namespace 'std'
  311 | using enable_if_t = typename std::enable_if<B, T>::type;
      |                     ~~~~~~~~~~~~~~^~~~~~~~~
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:311:44: error: expected ';' after alias declaration
  311 | using enable_if_t = typename std::enable_if<B, T>::type;
      |                                            ^
      |                                            ;
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:313:37: error: no type named 'conditional' in namespace 'std'
  313 | using conditional_t = typename std::conditional<B, T, F>::type;
      |                       ~~~~~~~~~~~~~~^~~~~~~~~~~
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:313:48: error: expected ';' after alias declaration
  313 | using conditional_t = typename std::conditional<B, T, F>::type;
      |                                                ^
      |                                                ;
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:314:46: error: no template named 'integral_constant' in namespace 'std'
  314 | template <bool B> using bool_constant = std::integral_constant<bool, B>;
      |                                         ~~~~~^
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:316:42: error: no type named 'remove_reference' in namespace 'std'
  316 | using remove_reference_t = typename std::remove_reference<T>::type;
      |                            ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:316:58: error: expected ';' after alias declaration
  316 | using remove_reference_t = typename std::remove_reference<T>::type;
      |                                                          ^
      |                                                          ;
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:318:38: error: no type named 'remove_const' in namespace 'std'
  318 | using remove_const_t = typename std::remove_const<T>::type;
      |                        ~~~~~~~~~~~~~~^~~~~~~~~~~~
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:318:50: error: expected ';' after alias declaration
  318 | using remove_const_t = typename std::remove_const<T>::type;
      |                                                  ^
      |                                                  ;
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:320:38: error: no type named 'remove_cv' in namespace 'std'
  320 | using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type;
      |                        ~~~~~~~~~~~~~~^~~~~~~~~
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:320:47: error: expected ';' after alias declaration
  320 | using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type;
      |                                               ^
      |                                               ;
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:322:39: error: no type named 'make_unsigned' in namespace 'std'
  322 | using make_unsigned_t = typename std::make_unsigned<T>::type;
      |                         ~~~~~~~~~~~~~~^~~~~~~~~~~~~
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:322:52: error: expected ';' after alias declaration
  322 | using make_unsigned_t = typename std::make_unsigned<T>::type;
      |                                                    ^
      |                                                    ;
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:324:36: error: no type named 'underlying_type' in namespace 'std'
  324 | using underlying_t = typename std::underlying_type<T>::type;
      |                      ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
/Users/clausklein/.cache/CPM/fmt/297020319ba1d5d14e1599714def59a1788711c5/include/fmt/base.h:324:51: error: expected ';' after alias declaration
  324 | using underlying_t = typename std::underlying_type<T>::type;
      |                                                   ^
      |                                                   ;
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
[11/16] Linking CXX static library lib__cmake_cxx23.a
ninja: build stopped: subcommand failed.
make: *** [all] Error 1