Add code and notes for using clang-format

CMakeLists.txt

@@ -36,6 +36,7 @@ include(ECMGenerateHeaders)
 include(GenerateExportHeader)
 include(FeatureSummary)
 include(ECMQtDeclareLoggingCategory)
+include(KDEClangFormat)
 
 ecm_setup_version(${RELEASE_SERVICE_VERSION} VARIABLE_PREFIX KONSOLEPRIVATE
     SOVERSION ${RELEASE_SERVICE_VERSION_MAJOR}
@@ -111,3 +112,12 @@ else()
 endif()
 
 feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
+
+# Do not do bulk whitespace/style changes without MRs and maintainer(s)
+# approval.  clang-format executeable needs to be installed prior to initial
+# building; then do make clang-format.
+# add clang-format target for all our real source files
+file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES *.c *.cpp *.h *.hpp)
+kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})
+# Let's not do pre-hooks yet
+#kde_configure_git_pre_commit_hook(CHECKS CLANG_FORMAT)