Krisztian Szucs created ARROW-6514:
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Summary: [Developer][C++][CMake] LLVM tools are restricted to the
exact version 7.0
Key: ARROW-6514
URL: https://issues.apache.org/jira/browse/ARROW-6514
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Krisztian Szucs
I have LLVM 7.1 installed locally, and FindClangTools couldn't locate it
because ARROW_LLVM_VERSION is [hardcoded to
7.0|https://github.com/apache/arrow/blob/3f2a33f902983c0d395e0480e8a8df40ed5da29c/cpp/CMakeLists.txt#L91-L99]
and clang tools is [restricted to the minor
version|https://github.com/apache/arrow/blob/3f2a33f902983c0d395e0480e8a8df40ed5da29c/cpp/cmake_modules/FindClangTools.cmake#L78].
If it makes sense to restrict clang tools location down to the minor version,
then we need to pass the located LLVM's version instead of the hardcoded one.
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