CMake: add static analyzer during build process (by option)

.clang-format

@@ -3,6 +3,8 @@ Language:        Cpp
 BasedOnStyle:    llvm
 IndentWidth:     4
 ColumnLimit:     120
-ForEachMacros:   [ foreach, LIST_FOREACH, LIST_FOREACH_SAFE ]
+SpacesBeforeTrailingComments: 2
+#SpaceBeforeRangeBasedForLoopColon: false
+#ForEachMacros:   [ foreach, LIST_FOREACH, LIST_FOREACH_SAFE ]
 DisableFormat:   false
 

.clang-tidy

@@ -0,0 +1,3 @@
+Checks:             'cert-*,performance-*,readability-*,-readability-braces-around-statements'
+WarningsAsErrors:   'cert-*,performance-*,readability-*,-readability-braces-around-statements'
+FormatStyle:        file

CMakeLists.txt

@@ -279,6 +279,11 @@ mark_as_advanced(UA_DEBUG_DUMP_PKGS)
 option(UA_ENABLE_HARDENING "Enable Hardening measures (e.g. Stack-Protectors and Fortify)" ON)
 mark_as_advanced(UA_ENABLE_HARDENING)
 
+if(CMAKE_VERSION VERSION_GREATER 3.6)
+    set(UA_ENABLE_STATIC_ANALYZER "OFF" CACHE STRING "Enable installed static analyzer during build process (off/minimal/reduced/full)")
+    SET_PROPERTY(CACHE UA_ENABLE_STATIC_ANALYZER PROPERTY STRINGS "OFF" "MINIMAL" "REDUCED" "FULL")
+endif()
+
 # Build Targets
 option(UA_BUILD_EXAMPLES "Build example servers and clients" OFF)
 option(UA_BUILD_TOOLS "Build OPC UA shell tools" OFF)
@@ -350,6 +355,12 @@ if(UA_ENABLE_MULTITHREADING)
     MESSAGE(WARNING "UA_ENABLE_MULTITHREADING is enabled. The feature is under development and marked as EXPERIMENTAL")
 endif()
 
+########################
+# Linting during build #
+########################
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+include(linting_build)
+
 ######################
 # External Libraries #
 ######################
@@ -1055,43 +1066,10 @@ if(UA_BUILD_TOOLS)
     endif()
 endif()
 
-############################
-# Linting run (clang-tidy) #
-############################
-
-find_package(ClangTools)
-add_custom_target(lint ${CLANG_TIDY_PROGRAM}
-                  ${lib_sources}
-                  -checks=cert-*,performance-*,readability-*,-readability-braces-around-statements
-                  -warnings-as-errors=cert-*,performance-*,readability-*,-readability-braces-around-statements
-                  --
-                  -std=c99
-                  -I${PROJECT_SOURCE_DIR}/include
-                  -I${PROJECT_SOURCE_DIR}/plugins
-                  -I${PROJECT_SOURCE_DIR}/deps
-                  -I${PROJECT_SOURCE_DIR}/src
-                  -I${PROJECT_SOURCE_DIR}/src/server
-                  -I${PROJECT_SOURCE_DIR}/src/client
-                  -I${PROJECT_BINARY_DIR}/src_generated
-                  DEPENDS ${lib_sources}
-                  COMMENT "Run clang-tidy on the library")
-add_dependencies(lint open62541)
-
-add_custom_target(cpplint cpplint
-                  ${lib_sources}
-                  ${internal_headers}
-                  ${default_plugin_headers}
-                  ${default_plugin_sources}
-                  ${ua_architecture_headers}
-                  ${ua_architecture_sources}
-                  DEPENDS ${lib_sources}
-                          ${internal_headers}
-                          ${default_plugin_headers}
-                          ${default_plugin_sources}
-                          ${ua_architecture_headers}
-                          ${ua_architecture_sources}
-
-                  COMMENT "Run cpplint code style checker on the library")
+########################
+# Linting as target    #
+########################
+include(linting_target)
 
 ##########################
 # Installation           #
@@ -1250,7 +1228,7 @@ set_property(GLOBAL PROPERTY PREDEFINED_TARGETS_FOLDER "_CmakePredifinedTargets"
 
 set_target_properties(open62541 PROPERTIES FOLDER "open62541/lib")
 set_target_properties(open62541-object PROPERTIES FOLDER "open62541/lib")
-set_target_properties(lint PROPERTIES FOLDER "CodeAnalysis")
+set_target_properties(clang-tidy PROPERTIES FOLDER "CodeAnalysis")
 if (UA_ENABLE_AMALGAMATION)
     set_target_properties(open62541-amalgamation-header PROPERTIES FOLDER "open62541/lib")
     set_target_properties(open62541-amalgamation-source PROPERTIES FOLDER "open62541/lib")

CPPLINT.cfg

@@ -13,4 +13,8 @@ filter=-build/include
 filter=-build/header_guard
 filter=-readability/alt_tokens
 filter=-runtime/indentation_namespace
+filter=-whitespace/comments
+filter=-whitespace/blank_line
+filter=-readability/braces
 exclude_files=deps/*
+exclude_files=build/*

cppcheck-suppressions.txt

@@ -0,0 +1,3 @@
+missingIncludeSystem
+unusedFunction
+*:build

tools/cmake/linting_build.cmake

@@ -0,0 +1,53 @@
+if(UA_ENABLE_STATIC_ANALYZER STREQUAL MINIMAL OR UA_ENABLE_STATIC_ANALYZER STREQUAL REDUCED OR UA_ENABLE_STATIC_ANALYZER STREQUAL FULL)
+    # cpplint just gives warnings about coding style
+    find_program(CPPLINT_EXE NAMES "cpplint")
+    if(CPPLINT_EXE)
+        set(CMAKE_C_CPPLINT "${CPPLINT_EXE};--quiet")
+        set(CMAKE_CXX_CPPLINT "${CPPLINT_EXE};--quiet")
+    endif()
+endif()
+if(UA_ENABLE_STATIC_ANALYZER STREQUAL REDUCED OR UA_ENABLE_STATIC_ANALYZER STREQUAL FULL)
+    # clang-tidy has certain warnings as errors
+    find_program(CLANG_TIDY_EXE NAMES "clang-tidy")
+    if(CLANG_TIDY_EXE)
+        set(CMAKE_C_CLANG_TIDY "${CLANG_TIDY_EXE};-p=compile_commands.json")
+        set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_EXE};-p=compile_commands.json")
+    endif()
+elseif(UA_ENABLE_STATIC_ANALYZER STREQUAL FULL)
+    # cppcheck provides just warnings but checks "all" (for now) - huge CPU impact
+    find_program(CPPCHECK_EXE NAMES "cppcheck")
+    if(CPPCHECK_EXE)
+        set(CMAKE_C_CPPCHECK "${CPPCHECK_EXE};--project=compile_commands.json;--enable=all;--inconclusive;--inline-suppr;\
+--suppressions-list=${PROJECT_SOURCE_DIR}/cppcheck-suppressions.txt;-D__GNUC__;-i ${PROJECT_SOURCE_DIR}/build")
+        set(CMAKE_CXX_CPPCHECK "${CPPCHECK_EXE};--project=compile_commands.json;--enable=all;--inconclusive;--inline-suppr;\
+--suppressions-list=${PROJECT_SOURCE_DIR}/cppcheck-suppressions.txt;-D__GNUC__;-i ${PROJECT_SOURCE_DIR}/build")
+    endif()
+
+    # "include what you use" requires additional configuration - ignore for now
+    find_program(IWYU_EXE NAMES "iwyu")
+    if(IWYU_EXE)
+        #set(CMAKE_C_INCLUDE_WHAT_YOU_USE "${IWYU_EXE}")
+        #set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE "${IWYU_EXE}")
+    endif()
+endif()
+
+# adds new target "clangformat" to enforce clang-format rules
+find_program(CLANG_FORMAT_EXE NAMES "clang-format")
+if(CLANG_FORMAT_EXE)
+  file(GLOB_RECURSE FILES_TO_FORMAT
+       ${PROJECT_SOURCE_DIR}/arch/*.c
+       ${PROJECT_SOURCE_DIR}/plugins/*.c
+       ${PROJECT_SOURCE_DIR}/src/*.c
+       ${PROJECT_SOURCE_DIR}/arch/*.h
+       ${PROJECT_SOURCE_DIR}/include/*.h
+       ${PROJECT_SOURCE_DIR}/plugins/*.h
+       ${PROJECT_SOURCE_DIR}/src/*.h
+    )
+  add_custom_target(
+    clangformat COMMAND ${CLANG_FORMAT_EXE}
+        -style=file
+        -i
+        ${FILES_TO_FORMAT}
+  )
+endif()
+

tools/cmake/linting_target.cmake

@@ -0,0 +1,30 @@
+find_package(ClangTools)
+add_custom_target(clang-tidy ${CLANG_TIDY_PROGRAM}
+                  ${lib_sources}
+                  -p=compile_commands.json
+                  --
+                  -I${PROJECT_SOURCE_DIR}/include
+                  -I${PROJECT_SOURCE_DIR}/plugins
+                  -I${PROJECT_SOURCE_DIR}/deps
+                  -I${PROJECT_SOURCE_DIR}/src
+                  -I${PROJECT_SOURCE_DIR}/src/server
+                  -I${PROJECT_SOURCE_DIR}/src/client
+                  -I${PROJECT_BINARY_DIR}/src_generated
+                  DEPENDS ${lib_sources}
+                  COMMENT "Run clang-tidy on the library")
+add_dependencies(clang-tidy open62541)
+
+add_custom_target(cpplint cpplint
+                  ${lib_sources}
+                  ${internal_headers}
+                  ${default_plugin_headers}
+                  ${default_plugin_sources}
+                  ${ua_architecture_headers}
+                  ${ua_architecture_sources}
+                  DEPENDS ${lib_sources}
+                          ${internal_headers}
+                          ${default_plugin_headers}
+                          ${default_plugin_sources}
+                          ${ua_architecture_headers}
+                          ${ua_architecture_sources}
+                  COMMENT "Run cpplint code style checker on the library")

tools/travis/travis_linux_script.sh

@@ -161,6 +161,12 @@ if ! [ -z ${ANALYZE+x} ]; then
           make -j
         cd .. && rm build -rf
 
+        #mkdir -p build && cd build
+        #cmake -DUA_ENABLE_STATIC_ANALYZER=REDUCED ..
+        ## previous clang-format to reduce to non-trivial warnings
+        #make clangformat
+        #make
+        #cd .. && rm build -rf
     else
         cppcheck --template "{file}({line}): {severity} ({id}): {message}" \
             --enable=style --force --std=c++11 -j 8 \