# # The MIT License (MIT) # # Copyright (c) 2013 Matthew Arsenault # # 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. # # This module tests if address sanitizer is supported by the compiler, # and creates a ASan build type (i.e. set CMAKE_BUILD_TYPE=ASan to use # it). This sets the following variables: # # CMAKE_C_FLAGS_ASAN - Flags to use for C with asan # CMAKE_CXX_FLAGS_ASAN - Flags to use for C++ with asan # HAVE_ADDRESS_SANITIZER - True or false if the ASan build type is available include(CheckCCompilerFlag) # Set -Werror to catch "argument unused during compilation" warnings set(CMAKE_REQUIRED_FLAGS "-Werror -faddress-sanitizer") # Also needs to be a link flag for test to pass check_c_compiler_flag("-faddress-sanitizer" HAVE_FLAG_ADDRESS_SANITIZER) set(CMAKE_REQUIRED_FLAGS "-Werror -fsanitize=address") # Also needs to be a link flag for test to pass check_c_compiler_flag("-fsanitize=address" HAVE_FLAG_SANITIZE_ADDRESS) unset(CMAKE_REQUIRED_FLAGS) if(HAVE_FLAG_SANITIZE_ADDRESS) # Clang 3.2+ use this version set(ADDRESS_SANITIZER_FLAG "-fsanitize=address") elseif(HAVE_FLAG_ADDRESS_SANITIZER) # Older deprecated flag for ASan set(ADDRESS_SANITIZER_FLAG "-faddress-sanitizer") endif() if(NOT ADDRESS_SANITIZER_FLAG) return() else(NOT ADDRESS_SANITIZER_FLAG) set(HAVE_ADDRESS_SANITIZER FALSE) endif() set(HAVE_ADDRESS_SANITIZER TRUE) set(CMAKE_C_FLAGS_ASAN "-O1 -g ${ADDRESS_SANITIZER_FLAG} -fno-omit-frame-pointer -fno-optimize-sibling-calls" CACHE STRING "Flags used by the C compiler during ASan builds." FORCE) set(CMAKE_CXX_FLAGS_ASAN "-O1 -g ${ADDRESS_SANITIZER_FLAG} -fno-omit-frame-pointer -fno-optimize-sibling-calls" CACHE STRING "Flags used by the C++ compiler during ASan builds." FORCE) set(CMAKE_EXE_LINKER_FLAGS_ASAN "${ADDRESS_SANITIZER_FLAG}" CACHE STRING "Flags used for linking binaries during ASan builds." FORCE) set(CMAKE_SHARED_LINKER_FLAGS_ASAN "${ADDRESS_SANITIZER_FLAG}" CACHE STRING "Flags used by the shared libraries linker during ASan builds." FORCE) mark_as_advanced(CMAKE_C_FLAGS_ASAN CMAKE_CXX_FLAGS_ASAN CMAKE_EXE_LINKER_FLAGS_ASAN CMAKE_SHARED_LINKER_FLAGS_ASAN)