1# 2# Copyright (c) 2017, Alliance for Open Media. All rights reserved. 3# 4# This source code is subject to the terms of the BSD 2 Clause License and the 5# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was 6# not distributed with this source code in the LICENSE file, you can obtain it 7# at www.aomedia.org/license/software. If the Alliance for Open Media Patent 8# License 1.0 was not distributed with this source code in the PATENTS file, you 9# can obtain it at www.aomedia.org/license/patent. 10# 11if(AOM_BUILD_CMAKE_SANITIZERS_CMAKE_) 12 return() 13endif() # AOM_BUILD_CMAKE_SANITIZERS_CMAKE_ 14set(AOM_BUILD_CMAKE_SANITIZERS_CMAKE_ 1) 15 16if(MSVC OR NOT SANITIZE) 17 return() 18endif() 19 20include("${AOM_ROOT}/build/cmake/compiler_flags.cmake") 21 22string(TOLOWER ${SANITIZE} SANITIZE) 23 24# Require the sanitizer requested. cfi sanitizer requires all the flags in order 25# for the compiler to accept it. 26if("${SANITIZE}" MATCHES "cfi" AND CMAKE_C_COMPILER_ID MATCHES "Clang") 27 require_linker_flag("-fsanitize=${SANITIZE} -flto -fno-sanitize-trap=cfi \ 28 -fuse-ld=gold" YES) 29 require_compiler_flag("-fsanitize=${SANITIZE} -flto -fvisibility=hidden \ 30 -fno-sanitize-trap=cfi" YES) 31else() 32 require_linker_flag("-fsanitize=${SANITIZE}") 33 require_compiler_flag("-fsanitize=${SANITIZE}" YES) 34endif() 35 36# Make callstacks accurate. 37require_compiler_flag("-fno-omit-frame-pointer -fno-optimize-sibling-calls" YES) 38 39# Fix link errors due to missing rt compiler lib in 32-bit builds. 40# http://llvm.org/bugs/show_bug.cgi?id=17693 41if(CMAKE_C_COMPILER_ID MATCHES "Clang") 42 if(${CMAKE_SIZEOF_VOID_P} EQUAL 4 43 AND "${SANITIZE}" MATCHES "integer|undefined") 44 require_linker_flag("--rtlib=compiler-rt -lgcc_s") 45 endif() 46endif() 47