200 lines
8.9 KiB
CMake
200 lines
8.9 KiB
CMake
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# The MIT License (MIT)
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#
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# Copyright (c)
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# 2013 Matthew Arsenault
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# 2015-2016 RWTH Aachen University, Federal Republic of Germany
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# 2021 Markus Eggenbauer
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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# Helper function to get the language of a source file.
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function(sanitizer_lang_of_source FILE RETURN_VAR)
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get_filename_component(LONGEST_EXT "${FILE}" EXT)
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# If extension is empty return. This can happen for extensionless headers
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if("${LONGEST_EXT}" STREQUAL "")
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set(${RETURN_VAR} "" PARENT_SCOPE)
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return()
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endif()
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# Get shortest extension as some files can have dot in their names
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string(REGEX REPLACE "^.*(\\.[^.]+)$" "\\1" FILE_EXT ${LONGEST_EXT})
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string(TOLOWER "${FILE_EXT}" FILE_EXT)
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string(SUBSTRING "${FILE_EXT}" 1 -1 FILE_EXT)
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get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
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foreach(LANG ${ENABLED_LANGUAGES})
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list(FIND CMAKE_${LANG}_SOURCE_FILE_EXTENSIONS "${FILE_EXT}" TEMP)
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if(NOT ${TEMP} EQUAL -1)
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set(${RETURN_VAR} "${LANG}" PARENT_SCOPE)
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return()
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endif()
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endforeach()
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set(${RETURN_VAR} "" PARENT_SCOPE)
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endfunction()
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# Helper function to get compilers used by a target.
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function(sanitizer_target_compilers TARGET RETURN_VAR)
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# Check if all sources for target use the same compiler. If a target uses
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# e.g. C and Fortran mixed and uses different compilers (e.g. clang and
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# gfortran) this can trigger huge problems, because different compilers may
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# use different implementations for sanitizers.
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set(BUFFER "")
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get_target_property(TSOURCES ${TARGET} SOURCES)
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foreach(FILE ${TSOURCES})
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# If expression was found, FILE is a generator-expression for an object
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# library. Object libraries will be ignored.
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string(REGEX MATCH "TARGET_OBJECTS:([^ >]+)" _file ${FILE})
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if("${_file}" STREQUAL "")
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sanitizer_lang_of_source(${FILE} LANG)
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if(LANG)
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list(APPEND BUFFER ${CMAKE_${LANG}_COMPILER_ID})
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endif()
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endif()
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endforeach()
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list(REMOVE_DUPLICATES BUFFER)
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set(${RETURN_VAR} "${BUFFER}" PARENT_SCOPE)
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endfunction()
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# Helper function to check compiler flags for language compiler.
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function(sanitizer_check_compiler_flag FLAG LANG VARIABLE)
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if(${LANG} STREQUAL "C")
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include(CheckCCompilerFlag)
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check_c_compiler_flag("${FLAG}" ${VARIABLE})
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elseif(${LANG} STREQUAL "CXX")
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include(CheckCXXCompilerFlag)
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check_cxx_compiler_flag("${FLAG}" ${VARIABLE})
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elseif(${LANG} STREQUAL "Fortran")
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# CheckFortranCompilerFlag was introduced in CMake 3.x. To be compatible
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# with older Cmake versions, we will check if this module is present
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# before we use it. Otherwise we will define Fortran coverage support as
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# not available.
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include(CheckFortranCompilerFlag OPTIONAL RESULT_VARIABLE INCLUDED)
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if(INCLUDED)
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CHECK_Fortran_COMPILER_FLAG("${FLAG}" ${VARIABLE})
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elseif(NOT CMAKE_REQUIRED_QUIET)
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message(STATUS "Performing Test ${VARIABLE}")
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message(STATUS "Performing Test ${VARIABLE}" " - Failed (Check not supported)")
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endif()
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endif()
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endfunction()
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# Helper function to test compiler flags.
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function(sanitizer_check_compiler_flags FLAG_CANDIDATES NAME PREFIX)
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set(CMAKE_REQUIRED_QUIET ${${PREFIX}_FIND_QUIETLY})
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get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
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foreach(LANG ${ENABLED_LANGUAGES})
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# Sanitizer flags are not dependend on language, but the used compiler.
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# So instead of searching flags foreach language, search flags foreach
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# compiler used.
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set(COMPILER ${CMAKE_${LANG}_COMPILER_ID})
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if(NOT DEFINED ${PREFIX}_${COMPILER}_FLAGS)
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foreach(FLAG ${FLAG_CANDIDATES})
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if(NOT CMAKE_REQUIRED_QUIET)
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message(STATUS "Try ${COMPILER} ${NAME} flag = [${FLAG}]")
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endif()
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set(CMAKE_REQUIRED_FLAGS "${FLAG}")
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unset(${PREFIX}_FLAG_DETECTED CACHE)
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sanitizer_check_compiler_flag("${FLAG}" ${LANG} ${PREFIX}_FLAG_DETECTED)
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if(${PREFIX}_FLAG_DETECTED)
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# If compiler is a GNU compiler, search for static flag, if
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# SANITIZE_LINK_STATIC is enabled.
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if(SANITIZE_LINK_STATIC AND (${COMPILER} STREQUAL "GNU"))
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string(TOLOWER ${PREFIX} PREFIX_lower)
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sanitizer_check_compiler_flag("-static-lib${PREFIX_lower}" ${LANG}
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${PREFIX}_STATIC_FLAG_DETECTED)
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if(${PREFIX}_STATIC_FLAG_DETECTED)
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set(FLAG "-static-lib${PREFIX_lower} ${FLAG}")
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endif()
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endif()
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set(${PREFIX}_${COMPILER}_FLAGS "${FLAG}"
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CACHE STRING "${NAME} flags for ${COMPILER} compiler.")
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mark_as_advanced(${PREFIX}_${COMPILER}_FLAGS)
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break()
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endif()
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endforeach()
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if(NOT ${PREFIX}_FLAG_DETECTED)
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set(${PREFIX}_${COMPILER}_FLAGS "" CACHE STRING
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"${NAME} flags for ${COMPILER} compiler.")
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mark_as_advanced(${PREFIX}_${COMPILER}_FLAGS)
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message(
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NOTICE "${NAME} is not available for ${COMPILER} "
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"compiler. Targets using this compiler will be " "compiled without ${NAME}.")
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endif()
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endif()
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endforeach()
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endfunction()
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# Helper to assign sanitizer flags for TARGET.
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function(sanitizer_add_flags TARGET NAME PREFIX)
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# Get list of compilers used by target and check, if sanitizer is available
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# for this target. Other compiler checks like check for conflicting
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# compilers will be done in add_sanitizers function.
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sanitizer_target_compilers(${TARGET} TARGET_COMPILER)
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list(LENGTH TARGET_COMPILER NUM_COMPILERS)
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if("${${PREFIX}_${TARGET_COMPILER}_FLAGS}" STREQUAL "")
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return()
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endif()
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# Set compile- and link-flags for target.
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set_property(TARGET ${TARGET} APPEND_STRING PROPERTY COMPILE_FLAGS
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" ${${PREFIX}_${TARGET_COMPILER}_FLAGS}")
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set_property(TARGET ${TARGET} APPEND_STRING PROPERTY COMPILE_FLAGS
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" ${SanBlist_${TARGET_COMPILER}_FLAGS}")
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set_property(TARGET ${TARGET} APPEND_STRING PROPERTY LINK_FLAGS
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" ${${PREFIX}_${TARGET_COMPILER}_FLAGS}")
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endfunction()
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macro(sanitizer_check_target TARGET)
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# Check if this target will be compiled by exactly one compiler. Other-
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# wise sanitizers can't be used and a warning should be printed once.
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get_target_property(TARGET_TYPE ${TARGET} TYPE)
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if(TARGET_TYPE STREQUAL "INTERFACE_LIBRARY")
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message(NOTICE "Can't use any sanitizers for target ${TARGET}, "
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"because it is an interface library and cannot be " "compiled directly.")
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return()
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endif()
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sanitizer_target_compilers(${TARGET} TARGET_COMPILER)
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list(LENGTH TARGET_COMPILER NUM_COMPILERS)
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if(NUM_COMPILERS GREATER 1)
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message(
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NOTICE "Can't use any sanitizers for target ${TARGET}, "
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"because it will be compiled by incompatible compilers. "
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"Target will be compiled without sanitizers.")
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return()
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# If the target is compiled by no or no known compiler, give a warning.
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elseif(NUM_COMPILERS EQUAL 0)
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message(
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NOTICE "Sanitizers for target ${TARGET} may not be"
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" usable, because it uses no or an unknown compiler. "
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"This is a false warning for targets using only " "object lib(s) as input.")
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return()
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endif()
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endmacro(sanitizer_check_target)
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