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[clang] Only build clang-tblgen if it is actually needed #161952

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[clang] Only build clang-tblgen if it is actually needed #161952

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4 changes: 3 additions & 1 deletion clang/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -479,7 +479,9 @@ option(CLANG_ENABLE_HLSL "Include HLSL build products" Off)
# While HLSL support is experimental this should stay hidden.
mark_as_advanced(CLANG_ENABLE_HLSL)

add_subdirectory(utils/TableGen)
if (NOT DEFINED CLANG_TABLEGEN_EXE OR CLANG_INCLUDE_TESTS)
add_subdirectory(utils/TableGen)
endif()

# Export CLANG_TABLEGEN_EXE for use by flang docs.
set(CLANG_TABLEGEN_EXE "${CLANG_TABLEGEN_EXE}" CACHE INTERNAL "")
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