CMake: Add support for Cppcheck

.cppcheck

@@ -0,0 +1,9 @@
+// clang-format off
+constParameter
+unusedFunction
+missingIncludeSystem
+noConstructor
+noExplicitConstructor
+redundantAssignment
+uselessAssignmentPtrArg
+preprocessorErrorDirective

CMakeLists.txt

@@ -77,6 +77,7 @@ option(WITH_STOKESIAN_DYNAMICS "Build with Stokesian Dynamics" OFF)
 option(WITH_BENCHMARKS "Enable benchmarks" OFF)
 option(WITH_VALGRIND_INSTRUMENTATION
        "Build with valgrind instrumentation markers" OFF)
+option(WITH_CPPCHECK "Run Cppcheck during compilation" OFF)
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   option(WITH_CLANG_TIDY "Run Clang-Tidy during compilation" OFF)
 endif()
@@ -421,6 +422,19 @@ if(WITH_CLANG_TIDY)
   set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_EXE};--extra-arg=--cuda-host-only")
 endif()
 
+if(WITH_CPPCHECK)
+  find_program(CMAKE_CXX_CPPCHECK NAMES cppcheck)
+  if(NOT CMAKE_CXX_CPPCHECK)
+    message(FATAL_ERROR "Could not find the program cppcheck.")
+  endif()
+  list(APPEND CMAKE_CXX_CPPCHECK "--enable=all"
+       "--std=c++${CMAKE_CXX_STANDARD}" "--quiet" "--inline-suppr"
+       "--suppressions-list=${CMAKE_CURRENT_SOURCE_DIR}/.cppcheck")
+  if(WARNINGS_ARE_ERRORS)
+    list(APPEND CMAKE_CXX_CPPCHECK "--error-exitcode=2")
+  endif()
+endif()
+
 #
 # Testing
 #

src/core/CellStructure.hpp

@@ -153,6 +153,7 @@ struct CellStructure {
    */
   void update_particle_index(int id, Particle *p) {
     assert(id >= 0);
+    // cppcheck-suppress assertWithSideEffect
     assert(not p or id == p->identity());
 
     if (id >= m_particle_index.size())