+function(set_flag FLAG DEFAULT)
+ unset(FLAG_CONSTANT)
+ string(MAKE_C_IDENTIFIER CXX${FLAG} FLAG_CONSTANT)
+ check_cxx_compiler_flag(${FLAG} ${FLAG_CONSTANT})
+ if(${FLAG_CONSTANT})
+ add_compile_options(${FLAG})
+ elseif(DEFAULT)
+ add_compile_options(${DEFAULT})
+ endif()
+endfunction()
+
+macro(check_sanitizer VAR NAME LIB)
+ message(STATUS "Checking for sanitizer: ${NAME} (-l${LIB})")
+ if(${NAME} IN_LIST ${VAR} OR ${LIB} IN_LIST ${VAR})
+ make_have_identifier(${LIB} HAVE)
+ cmake_push_check_state(RESET)
+ set(CMAKE_REQUIRED_LIBRARIES ${LIB})
+ check_cxx_compiler_flag(-fsanitize=${NAME} ${HAVE})
+ cmake_pop_check_state()
+ if(${HAVE})
+ add_compile_definitions(${HAVE})
+ add_compile_options(-fsanitize=${NAME})
+ link_libraries(-fsanitize=${NAME})
+ set_flag(-fsanitize-recover=${NAME} IGNORE)
+ message(STATUS " OK: sanitizer ${NAME}")
+ else()
+ message(STATUS " NO: not supported")
+ endif()
+ else()
+ message(STATUS " NO: not requested")
+ endif()
+endmacro()
+
+if(CMAKE_BUILD_TYPE STREQUAL "Debug" AND NOT MSVC)
+ add_definitions(-DDEBUG=1)
+ if(CMAKE_CXX_FLAGS MATCHES --coverage)
+ message("-- Coverage build detected!")
+ message("-- Skipping debug and sanitizer flag checks.")
+ else()
+ set_flag(-Og -O0)
+ set_flag(-ggdb -g)