[CMake] Added Clang sanitizer options.

CHANGELOG.md

@@ -10,6 +10,9 @@
 
 - Added CMake option `OGS_CPU_ARCHITECTURE`, #858, [downloadable binaries](http://docs.opengeosys.org/download) build by Jenkins should now run on more CPUs
 - Added CMake options for Boost, VTK and Eigen (`OGS_LIB_BOOST`, ...) to specify if libs are searched on the system first, then build them locally (`Default`), or you can specify to just use system libs (`System`) or force a local build (`Local`)
+- Added CMake options for enabling Clang sanitizer:
+  - `OGS_ADDRESS_SANITIZER`
+  - `OGS_UNDEFINED_BEHAVIOR_SANITIZER`
 
 ### Documentation
 

scripts/cmake/ClangSanitizer.cmake

+if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.6")
+	return()
+endif()
+
+option(OGS_ADDRESS_SANITIZER OFF "Use Clangs AddressSanitizer")
+option(OGS_UNDEFINED_BEHAVIOR_SANITIZER OFF "Use Clangs UndefinedBehaviorSanitizer")
+
+if(OGS_ADDRESS_SANITIZER)
+	set(SANITIZE_FLAG_VALUE "address")
+	set(ADDITIONAL_FLAGS "-fno-omit-frame-pointer")
+endif()
+
+if(OGS_UNDEFINED_BEHAVIOR_SANITIZER)
+	set(SANITIZE_FLAG_VALUE "${SANITIZE_FLAG_VALUE},undefined")
+endif()
+
+if(DEFINED SANITIZE_FLAG_VALUE)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=${SANITIZE_FLAG_VALUE} ${ADDITIONAL_FLAGS}")
+endif()

scripts/cmake/CompilerSetup.cmake

@@ -61,6 +61,9 @@ if(COMPILER_IS_CLANG)
 			set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_ASSERT -D_GLIBCXX_DEBUG_PEDASSERT -D_GLIBCXX_DEBUG_VERIFY")
 		endif()
 	endif()
+
+	include(ClangSanitizer)
+
 endif() # COMPILER_IS_CLANG
 
 ### Intel compiler