ceph/cmake/modules/FindSanitizers.cmake
Kefu Chai fd58e5d4ad cmake,ceph.in: preload libasan if WITH_ASAN
we need to preload libasan.so as the python exectuable is not likely to
be compiled with ASan enabled.
see:
https://github.com/google/sanitizers/wiki/AddressSanitizerAsDso#asan-and-ld_preload

just to ease the use of ASan, for fine-tuned behaviour, use
`ASAN_OPTIONS`.

Signed-off-by: Kefu Chai <kchai@redhat.com>
2018-10-22 14:40:03 +08:00

79 lines
2.7 KiB
CMake

if(NOT Sanitizers_FIND_COMPONENTS)
set(Sanitizers_FIND_COMPONENTS
address undefined_behavior)
endif()
if(HAVE_JEMALLOC)
message(WARNING "JeMalloc does not work well with sanitizers")
endif()
set(Sanitizers_OPTIONS)
foreach(component ${Sanitizers_FIND_COMPONENTS})
if(component STREQUAL "address")
set(Sanitizers_address_COMPILE_OPTIONS "address")
elseif(component STREQUAL "leak")
set(Sanitizers_leak_COMPILE_OPTIONS "leak")
elseif(component STREQUAL "thread")
if ("address" IN_LIST ${Sanitizers_FIND_COMPONENTS} OR
"leak" IN_LIST ${Sanitizers_FIND_COMPONENTS})
message(SEND_ERROR "Cannot combine -fsanitize-leak w/ -fsanitize-thread")
elseif(NOT CMAKE_POSITION_INDEPENDENT_CODE)
message(SEND_ERROR "TSan requires all code to be position independent")
endif()
set(Sanitizers_Thread_COMPILE_OPTIONS "thread")
elseif(component STREQUAL "undefined_behavior")
set(Sanitizers_undefined_behavior_COMPILE_OPTIONS "undefined")
else()
message(SEND_ERROR "Unsupported sanitizer: ${component}")
endif()
list(APPEND Sanitizers_OPTIONS "${Sanitizers_${component}_COMPILE_OPTIONS}")
endforeach()
if(Sanitizers_address_COMPILE_OPTIONS OR Sanitizers_leak_COMPILE_OPTIONS)
# ASAN_LIBRARY will be read by ceph.in to preload the asan library
find_library(ASAN_LIBRARY
NAMES
libasan.so.5
libasan.so.4
libasan.so.3)
endif()
if(Sanitizers_OPTIONS)
string(REPLACE ";" ","
Sanitizers_COMPILE_OPTIONS
"${Sanitizers_OPTIONS}")
set(Sanitizers_COMPILE_OPTIONS
"-fsanitize=${Sanitizers_COMPILE_OPTIONS} -fno-omit-frame-pointer")
endif()
include(CheckCXXSourceCompiles)
set(CMAKE_REQUIRED_FLAGS ${Sanitizers_COMPILE_OPTIONS})
set(CMAKE_REQUIRED_LIBRARIES ${Sanitizers_COMPILE_OPTIONS})
check_cxx_source_compiles("int main() {}"
Sanitizers_ARE_SUPPORTED)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Sanitizers
REQUIRED_VARS
Sanitizers_ARE_SUPPORTED
Sanitizers_COMPILE_OPTIONS)
if(Sanitizers_FOUND)
if(NOT TARGET Sanitizers::Sanitizers)
add_library(Sanitizers::Sanitizers INTERFACE IMPORTED)
set_target_properties(Sanitizers::Sanitizers PROPERTIES
INTERFACE_COMPILE_OPTIONS ${Sanitizers_COMPILE_OPTIONS}
INTERFACE_LINK_LIBRARIES ${Sanitizers_COMPILE_OPTIONS})
endif()
foreach(component ${Sanitizers_FIND_COMPONENTS})
if(NOT TARGET Sanitizers::${component})
set(target Sanitizers::${component})
set(compile_option "-fsanitize=${Sanitizers_${component}_COMPILE_OPTIONS}")
add_library(${target} INTERFACE IMPORTED)
set_target_properties(${target} PROPERTIES
INTERFACE_COMPILE_OPTIONS ${compile_option}
INTERFACE_LINK_LIBRARIES ${compile_option})
endif()
endforeach()
endif()