Enable/Disable output of compile commands for clang-tidy (#3214)

Signed-off-by: Nquicksilver <zhifeng.zhang@zilliz.com>

.clang-tidy

@@ -18,7 +18,7 @@
 Checks:          'clang-diagnostic-*,clang-analyzer-*,-clang-analyzer-alpha*,google-*,modernize-*,readability-*'
 # produce HeaderFilterRegex from cpp/build-support/lint_exclusions.txt with:
 # echo -n '^('; sed -e 's/*/\.*/g' cpp/build-support/lint_exclusions.txt | tr '\n' '|'; echo ')$'
-HeaderFilterRegex: '^(.*cmake-build-debug.*|.*cmake-build-release.*|.*cmake_build.*|.*src/core/thirdparty.*|.*thirdparty.*|.*easylogging++.*|.*SqliteMetaImpl.cpp|.*src/grpc.*|.*src/core.*|.*src/wrapper.*)$'
+HeaderFilterRegex: '^(.*core/cmake-build-debug.*|.*core/cmake-build-release.*|.*core/cmake_build.*)$'
 AnalyzeTemporaryDtors: true
 ChainedConditionalReturn: 1
 ChainedConditionalAssignment: 1

core/CMakeLists.txt

@@ -160,6 +160,13 @@ find_package( Python COMPONENTS Interpreter Development )
 find_package( ClangTools )
 set( BUILD_SUPPORT_DIR "${CMAKE_SOURCE_DIR}/build-support" )
 
+if("$ENV{CMAKE_EXPORT_COMPILE_COMMANDS}" STREQUAL "1" OR CLANG_TIDY_FOUND)
+  # Generate a Clang compile_commands.json "compilation database" file for use
+  # with various development tools, such as Vim's YouCompleteMe plugin.
+  # See http://clang.llvm.org/docs/JSONCompilationDatabase.html
+  set(CMAKE_EXPORT_COMPILE_COMMANDS 1)
+endif()
+
 #
 # "make lint" target
 #

core/build-support/run_clang_tidy.py

@@ -57,7 +57,7 @@ def _check_all(cmd, filenames):
             if problem_files:
                 msg = "clang-tidy suggested fixes for {}"
                 print("\n".join(map(msg.format, problem_files)))
-                print(stdout)
+                print(stdout.decode("utf-8"))
                 error = True
     except Exception:
         error = True
@@ -123,4 +123,3 @@ if __name__ == "__main__":
 
     else:
         _check_all(cmd, linted_filenames)
-