# 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_ADDRESS "Enable AddressSanitizer for sanitized targets." Off)

set(
    FLAG_CANDIDATES
    # Clang 3.2+ use this version. The no-omit-frame-pointer option is optional.
    "-g -fsanitize=address -fno-omit-frame-pointer" "-g -fsanitize=address"
    # Older deprecated flag for ASan
    "-g -faddress-sanitizer"
)

include(sanitize-helpers)

sanitizer_check_compiler_flags("${FLAG_CANDIDATES}" "AddressSanitizer" "ASan")

find_program(ASan_WRAPPER "asan-wrapper" PATHS ${CMAKE_MODULE_PATH})
mark_as_advanced(ASan_WRAPPER)

function(add_sanitize_address TARGET)
    # TODO: check conditions for target:
    # if (SANITIZE_ADDRESS AND (SANITIZE_THREAD OR SANITIZE_MEMORY))
    #   message(FATAL_ERROR "AddressSanitizer is not compatible with ThreadSanitizer or MemorySanitizer.")
    # endif ()

    sanitizer_check_target(${TARGET})
    sanitizer_add_flags(${TARGET} "AddressSanitizer" "ASan")
endfunction()
