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| author | Ben Boeckel <ben.boeckel@kitware.com> | 2023-09-21 13:41:26 (GMT) |
|---|---|---|
| committer | Ben Boeckel <ben.boeckel@kitware.com> | 2023-09-21 13:44:48 (GMT) |
| commit | 4f0410959ec014bdb8d9838a36ae37e31b98318d (patch) | |
| tree | f068ecdcf2e173a389baea0e5742381f1a3b856d | |
| parent | 8030dd0986716df5368813b5792dbb28fb06ed82 (diff) | |
| download | CMake-4f0410959ec014bdb8d9838a36ae37e31b98318d.zip CMake-4f0410959ec014bdb8d9838a36ae37e31b98318d.tar.gz CMake-4f0410959ec014bdb8d9838a36ae37e31b98318d.tar.bz2 | |
GCC: add rules for scanning C++ module dependencies
| -rw-r--r-- | Modules/Compiler/GNU-CXX.cmake | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Modules/Compiler/GNU-CXX.cmake b/Modules/Compiler/GNU-CXX.cmake index b35f254..c276f4e 100644 --- a/Modules/Compiler/GNU-CXX.cmake +++ b/Modules/Compiler/GNU-CXX.cmake @@ -72,3 +72,24 @@ elseif(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 8.0) endif() __compiler_check_default_language_standard(CXX 3.4 98 6.0 14 11.1 17) + +if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 14.0) + string(CONCAT CMAKE_EXPERIMENTAL_CXX_SCANDEP_SOURCE + "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E -x c++ <SOURCE>" + " -MT <DYNDEP_FILE> -MD -MF <DEP_FILE>" + " -fmodules-ts -fdeps-file=<DYNDEP_FILE> -fdeps-target=<OBJECT> -fdeps-format=p1689r5" + " -o <PREPROCESSED_SOURCE>") + set(CMAKE_EXPERIMENTAL_CXX_MODULE_MAP_FORMAT "gcc") + string(CONCAT CMAKE_EXPERIMENTAL_CXX_MODULE_MAP_FLAG + # Turn on modules. + "-fmodules-ts" + # Read the module mapper file. + " -fmodule-mapper=<MODULE_MAP_FILE>" + # Make sure dependency tracking is enabled (missing from `try_*`). + " -MD" + # Suppress `CXX_MODULES +=` from generated depfile snippets. + " -fdeps-format=p1689r5" + # Force C++ as a language. + " -x c++") + set(CMAKE_EXPERIMENTAL_CXX_MODULE_BMI_ONLY_FLAG "-fmodule-only") +endif() |