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Restructured code of FindASan.cmake

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This commit is contained in:
Alexander Haase 2015-11-19 14:11:10 +01:00
parent 4fd453301a
commit 41e635c9ca
1 changed files with 98 additions and 48 deletions
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138
cmake/FindASan.cmake
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@ -1,4 +1,3 @@
#
# The MIT License (MIT) # The MIT License (MIT)
# #
# Copyright (c) 2013 Matthew Arsenault # Copyright (c) 2013 Matthew Arsenault
@ -10,65 +9,116 @@
# copies of the Software, and to permit persons to whom the Software is # copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions: # furnished to do so, subject to the following conditions:
# #
# The above copyright notice and this permission notice shall be included in # The above copyright notice and this permission notice shall be included in all
# all copies or substantial portions of the Software. # copies or substantial portions of the Software.
# #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # 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 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# THE SOFTWARE. # 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) # This module tests if address sanitizer is supported by the compiler. The
# necessary flags for compiler and linker will be stored in variables. ASan can
# be enabled for all targets with CMake build type "ASan", individual targets
# can enable ASan with the saitize_address() function.
# Set -Werror to catch "argument unused during compilation" warnings option(SANITIZE_ADDRESS "Selects wheter Address Sanitizer will be enabled for
set(CMAKE_REQUIRED_FLAGS "-Werror -faddress-sanitizer") # Also needs to be a link flag for test to pass individual targets" Off)
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 set(ASAN_FLAG_CANDIDATES
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 # Clang 3.2+ use this version
set(ADDRESS_SANITIZER_FLAG "-fsanitize=address") "-fsanitize=address"
elseif(HAVE_FLAG_ADDRESS_SANITIZER)
# Older deprecated flag for ASan # Older deprecated flag for ASan
set(ADDRESS_SANITIZER_FLAG "-faddress-sanitizer") "-faddress-sanitizer"
)
set(CMAKE_REQUIRED_QUIET_SAVE ${CMAKE_REQUIRED_QUIET})
set(CMAKE_REQUIRED_QUIET ${ASan_FIND_QUIETLY})
set(_ASAN_REQUIRED_VARS)
foreach (LANG C CXX)
if (NOT CMAKE_${LANG}_COMPILER_LOADED)
continue()
endif() endif()
if(NOT ADDRESS_SANITIZER_FLAG) list(APPEND _ASAN_REQUIRED_VARS ASAN_${LANG}_FLAGS)
return()
else(NOT ADDRESS_SANITIZER_FLAG) # If flags for this compiler were already found, do not try to find them
set(HAVE_ADDRESS_SANITIZER FALSE) # again.
if (ASAN_${LANG}_FLAGS)
continue()
endif () endif ()
set(HAVE_ADDRESS_SANITIZER TRUE) foreach (FLAG ${ASAN_FLAG_CANDIDATES})
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Try Address sanitizer ${LANG} flag = [${FLAG}]")
endif()
set(CMAKE_C_FLAGS_ASAN "-O1 -g ${ADDRESS_SANITIZER_FLAG} -fno-omit-frame-pointer -fno-optimize-sibling-calls" set(CMAKE_REQUIRED_FLAGS "${FLAG}")
CACHE STRING "Flags used by the C compiler during ASan builds." unset(ASAN_FLAG_DETECTED CACHE)
FORCE)
set(CMAKE_CXX_FLAGS_ASAN "-O1 -g ${ADDRESS_SANITIZER_FLAG} -fno-omit-frame-pointer -fno-optimize-sibling-calls" if (${LANG} STREQUAL "C")
CACHE STRING "Flags used by the C++ compiler during ASan builds." include(CheckCCompilerFlag)
FORCE) check_c_compiler_flag("${FLAG}" ASAN_FLAG_DETECTED)
set(CMAKE_EXE_LINKER_FLAGS_ASAN "${ADDRESS_SANITIZER_FLAG}"
CACHE STRING "Flags used for linking binaries during ASan builds." elseif (${LANG} STREQUAL "CXX")
FORCE) include(CheckCXXCompilerFlag)
set(CMAKE_SHARED_LINKER_FLAGS_ASAN "${ADDRESS_SANITIZER_FLAG}" check_cxx_compiler_flag("${FLAG}" ASAN_FLAG_DETECTED)
CACHE STRING "Flags used by the shared libraries linker during ASan builds." endif()
FORCE)
if (ASAN_FLAG_DETECTED)
set(ASAN_${LANG}_FLAGS "${FLAG}"
CACHE STRING "${LANG} compiler flags for Address sanitizer")
break()
endif ()
endforeach()
endforeach ()
set(CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET_SAVE})
if (_ASAN_REQUIRED_VARS)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(ASan REQUIRED_VARS ${_ASAN_REQUIRED_VARS})
mark_as_advanced(${_ASAN_REQUIRED_VARS})
unset(_ASAN_REQUIRED_VARS)
else()
message(SEND_ERROR "FindASan requires C or CXX language to be enabled")
endif()
# add build target ASan
if (ASan_FOUND)
set(CMAKE_C_FLAGS_ASAN "${ASAN_C_FLAGS}" CACHE
STRING "Flags used by the C compiler during ASan builds.")
set(CMAKE_CXX_FLAGS_ASAN "${ASAN_CXX_FLAGS}" CACHE
STRING "Flags used by the C++ compiler during ASan builds.")
set(CMAKE_EXE_LINKER_FLAGS_ASAN "${ASAN_C_FLAGS}" CACHE
STRING "Flags used for linking binaries during ASan builds.")
set(CMAKE_SHARED_LINKER_FLAGS_ASAN "${ASAN_C_FLAGS}" CACHE
STRING "Flags used by the shared libraries linker during ASan builds.")
set(CMAKE_MODULE_LINKER_FLAGS_ASAN "${ASAN_C_FLAGS}" CACHE
STRING "Flags used by the module libraries linker during ASan builds.")
mark_as_advanced(CMAKE_C_FLAGS_ASAN mark_as_advanced(CMAKE_C_FLAGS_ASAN
CMAKE_CXX_FLAGS_ASAN CMAKE_CXX_FLAGS_ASAN
CMAKE_EXE_LINKER_FLAGS_ASAN CMAKE_EXE_LINKER_FLAGS_ASAN
CMAKE_SHARED_LINKER_FLAGS_ASAN) CMAKE_SHARED_LINKER_FLAGS_ASAN
CMAKE_MODULE_LINKER_FLAGS_ASAN)
endif ()
function (sanitize_address TARGET)
if (NOT SANITIZE_ADDRESS)
return()
endif ()
set_property(TARGET ${TARGET} APPEND_STRING PROPERTY
COMPILE_FLAGS " ${ASAN_C_FLAGS}")
set_property(TARGET ${TARGET} APPEND_STRING PROPERTY
LINK_FLAGS " ${ASAN_C_FLAGS}")
endfunction ()