# The MIT License (MIT)
#
# Copyright (c)
#   2013 Matthew Arsenault
#   2015-2016 RWTH Aachen University, Federal Republic of Germany
#   2021 Markus Eggenbauer
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

option(SANITIZE_MEMORY "Enable MemorySanitizer for sanitized targets." Off)

set(FLAG_CANDIDATES "-g -fsanitize=memory")

include(sanitize-helpers)

if(NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
    message(NOTICE "MemorySanitizer disabled for target ${TARGET} because "
            "MemorySanitizer is supported for Linux systems only.")
elseif(NOT ${CMAKE_SIZEOF_VOID_P} EQUAL 8)
    message(NOTICE "MemorySanitizer disabled for target ${TARGET} because "
            "MemorySanitizer is supported for 64bit systems only.")
else()
    sanitizer_check_compiler_flags("${FLAG_CANDIDATES}" "MemorySanitizer" "MSan")
endif()

function(add_sanitize_memory TARGET)
    # TODO: check conditions for target:
    # if (SANITIZE_MEMORY AND (SANITIZE_THREAD OR SANITIZE_ADDRESS))
    #   message(FATAL_ERROR "AddressSanitizer is not compatible with ThreadSanitizer or MemorySanitizer.")
    # endif ()
    sanitizer_check_target(${TARGET})
    sanitizer_add_flags(${TARGET} "MemorySanitizer" "MSan")
endfunction()