Recomment out-of-source build

Prevent to overwrite the project config file .clang-tidy

cmake/clang-tidy.cmake

@@ -11,12 +11,17 @@ if(CLANG_TIDY_EXE)
     set(DCMAKE_EXPORT_COMPILE_COMMANDS ON)
     set(CLANG_TIDY_CMD ${CLANG_TIDY_EXE})
     message(STATUS "cmake source dir: ${CMAKE_CURRENT_SOURCE_DIR}")
-    # NOTE: copy default checks config file .clang-tidy for later use
-    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/.clang-tidy ${CMAKE_CURRENT_BINARY_DIR} @ONLY)
+    # recomment out-of-source build
+    if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
+        message(AUTHOR_WARNING "In-source build is not recommented!")
+    else()
+        # NOTE: copy project config file .clang-tidy for later use
+        configure_file(${CMAKE_CURRENT_SOURCE_DIR}/.clang-tidy ${CMAKE_CURRENT_BINARY_DIR} @ONLY)
+    endif()
 
     if(SPDLOG_ENABLE_TIDY)
         # NOTE: the project config file .clang-tidy is not found if the
-        # binary tree is not part of the source tree! CK
+        # binary tree is not part of the source tree!
         set(CMAKE_CXX_CLANG_TIDY ${CLANG_TIDY_CMD} CACHE STRING "" FORCE)
     else()
         set(CMAKE_CXX_CLANG_TIDY "" CACHE STRING "" FORCE) # delete it
@@ -31,8 +36,8 @@ if(CLANG_TIDY_EXE)
 
         add_custom_command(TARGET check PRE_BUILD
             # -p BUILD_PATH Path used to read a compile command database (compile_commands.json).
-            # NOTE: we use default checks from .clang-tidy
-            COMMAND ${CLANG_TIDY_RUNNER} -p ${CMAKE_CURRENT_BINARY_DIR}
+            # NOTE: we use default checks from .clang-tidy and we check example tree only yet
+            COMMAND ${CLANG_TIDY_RUNNER} -p ${CMAKE_CURRENT_BINARY_DIR} example
             WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}   # location of compile_commands.json
             COMMENT "Running check on targets at ${CMAKE_CURRENT_SOURCE_DIR} ..."
             VERBATIM

cmake/ide.cmake

@@ -14,5 +14,5 @@ source_group("Header Files\\spdlog" FILES ${SPDLOG_TOP_HEADERS})
 source_group("Header Files\\spdlog\\details" FILES ${SPDLOG_DETAILS_HEADERS})
 source_group("Header Files\\spdlog\\sinks" FILES ${SPDLOG_SINKS_HEADERS})
 source_group("Header Files\\spdlog\\fmt" FILES ${SPDLOG_FMT_HEADERS})
-source_group("Header Files\\spdlog\\fmt\\bundled\\" FILES ${SPDLOG_FMT_BUNDELED_HEADERS})
+source_group("Header Files\\spdlog\\fmt\\bundled" FILES ${SPDLOG_FMT_BUNDELED_HEADERS})