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# Look for the latest package
set(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
set(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
find_package(Clang 16)
set(SOURCES
abi_tag_on_virtual.cpp
hide_from_abi.cpp
robust_against_adl.cpp
qualify_declval.cpp
libcpp_module.cpp
)
if(NOT Clang_FOUND)
message(STATUS "Could not find a suitable version of the Clang development package;
custom libc++ clang-tidy checks will not be available.")
return()
endif()
message(STATUS "Found system-installed LLVM ${LLVM_PACKAGE_VERSION} with headers in ${LLVM_INCLUDE_DIRS}")
set(CMAKE_CXX_STANDARD 20)
# Link only against clangTidy itself, not anything that clangTidy uses; otherwise we run setup code multiple times
# which results in clang-tidy crashing
set_target_properties(clangTidy PROPERTIES INTERFACE_LINK_LIBRARIES "")
# ClangTargets.cmake doesn't set the include paths, so we have to do it
target_include_directories(clangTidy INTERFACE
${CLANG_INCLUDE_DIRS}
${LLVM_INCLUDE_DIRS}
)
target_compile_options(clangTidy INTERFACE -fno-rtti)
add_library(cxx-tidy MODULE ${SOURCES})
target_link_libraries(cxx-tidy clangTidy)
set_target_properties(cxx-tidy PROPERTIES
CXX_STANDARD 20
CXX_STANDARD_REQUIRED YES
CXX_EXTENSIONS NO)
set_target_properties(cxx-tidy PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
set(CMAKE_SHARED_MODULE_SUFFIX_CXX .plugin) # Use a portable suffix to simplify how we can find it from Lit
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