Commit 08353542 authored by Brad King's avatar Brad King

clang-tidy: Clarify comment explaining purpose of CLANG_TIDY_SHA1

Suggested-by: Bill Hoffman's avatarBill Hoffman <>
parent 6e078505
......@@ -251,7 +251,12 @@ if(CMake_RUN_CLANG_TIDY)
# provide definitions for targets that require a rebuild once .clang-tidy changes
# Create a preprocessor definition that depends on .clang-tidy content so
# the compile command will change when .clang-tidy changes. This ensures
# that a subsequent build re-runs clang-tidy on all sources even if they
# do not otherwise need to be recompiled. Nothing actually uses this
# definition. We add it to targets on which we run clang-tidy just to
# get the build dependency on the .clang-tidy file.
file(SHA1 ${CMAKE_CURRENT_SOURCE_DIR}/.clang-tidy clang_tidy_sha1)
set(CLANG_TIDY_DEFINITIONS "CLANG_TIDY_SHA1=${clang_tidy_sha1}")
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