mirror of
https://github.com/Kitware/CMake.git
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023de565d3
A misconfigured compiler may pass extraneous implicit link directories to its linker. If they are in `CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES`, CMake may generate extra `-L` flags on mixed-language link lines that break linking. Add an environment variable that users can set to work around such misconfiguration of their compilers.
202 lines
8.3 KiB
CMake
202 lines
8.3 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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# Function to compile a source file to identify the compiler ABI.
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# This is used internally by CMake and should not be included by user
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# code.
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include(${CMAKE_ROOT}/Modules/CMakeParseImplicitIncludeInfo.cmake)
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include(${CMAKE_ROOT}/Modules/CMakeParseImplicitLinkInfo.cmake)
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include(${CMAKE_ROOT}/Modules/CMakeParseLibraryArchitecture.cmake)
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include(CMakeTestCompilerCommon)
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function(CMAKE_DETERMINE_COMPILER_ABI lang src)
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if(NOT DEFINED CMAKE_${lang}_ABI_COMPILED)
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message(CHECK_START "Detecting ${lang} compiler ABI info")
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# Compile the ABI identification source.
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set(BIN "${CMAKE_PLATFORM_INFO_DIR}/CMakeDetermineCompilerABI_${lang}.bin")
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set(CMAKE_FLAGS )
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set(COMPILE_DEFINITIONS )
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if(DEFINED CMAKE_${lang}_VERBOSE_FLAG)
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set(CMAKE_FLAGS "-DEXE_LINKER_FLAGS=${CMAKE_${lang}_VERBOSE_FLAG}")
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set(COMPILE_DEFINITIONS "${CMAKE_${lang}_VERBOSE_FLAG}")
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endif()
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if(DEFINED CMAKE_${lang}_VERBOSE_COMPILE_FLAG)
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set(COMPILE_DEFINITIONS "${CMAKE_${lang}_VERBOSE_COMPILE_FLAG}")
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endif()
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if(lang STREQUAL "CUDA")
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if(CMAKE_CUDA_ARCHITECTURES STREQUAL "native")
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# We are about to detect the native architectures, so we do
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# not yet know them. Use all architectures during detection.
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set(CMAKE_CUDA_ARCHITECTURES "all")
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endif()
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set(CMAKE_CUDA_RUNTIME_LIBRARY "Static")
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endif()
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if(NOT "x${CMAKE_${lang}_COMPILER_ID}" STREQUAL "xMSVC")
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# Avoid adding our own platform standard libraries for compilers
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# from which we might detect implicit link libraries.
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list(APPEND CMAKE_FLAGS "-DCMAKE_${lang}_STANDARD_LIBRARIES=")
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endif()
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__TestCompiler_setTryCompileTargetType()
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# Avoid failing ABI detection on warnings.
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string(REGEX REPLACE "(^| )-Werror([= ][^ ]*)?( |$)" " " CMAKE_${lang}_FLAGS "${CMAKE_${lang}_FLAGS}")
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# Save the current LC_ALL, LC_MESSAGES, and LANG environment variables
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# and set them to "C" that way GCC's "search starts here" text is in
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# English and we can grok it.
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set(_orig_lc_all $ENV{LC_ALL})
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set(_orig_lc_messages $ENV{LC_MESSAGES})
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set(_orig_lang $ENV{LANG})
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set(ENV{LC_ALL} C)
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set(ENV{LC_MESSAGES} C)
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set(ENV{LANG} C)
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try_compile(CMAKE_${lang}_ABI_COMPILED
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SOURCES ${src}
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CMAKE_FLAGS ${CMAKE_FLAGS}
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# Ignore unused flags when we are just determining the ABI.
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"--no-warn-unused-cli"
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COMPILE_DEFINITIONS ${COMPILE_DEFINITIONS}
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OUTPUT_VARIABLE OUTPUT
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COPY_FILE "${BIN}"
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COPY_FILE_ERROR _copy_error
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__CMAKE_INTERNAL ABI
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)
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# Restore original LC_ALL, LC_MESSAGES, and LANG
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set(ENV{LC_ALL} ${_orig_lc_all})
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set(ENV{LC_MESSAGES} ${_orig_lc_messages})
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set(ENV{LANG} ${_orig_lang})
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# Move result from cache to normal variable.
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set(CMAKE_${lang}_ABI_COMPILED ${CMAKE_${lang}_ABI_COMPILED})
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unset(CMAKE_${lang}_ABI_COMPILED CACHE)
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if(CMAKE_${lang}_ABI_COMPILED AND _copy_error)
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set(CMAKE_${lang}_ABI_COMPILED 0)
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endif()
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set(CMAKE_${lang}_ABI_COMPILED ${CMAKE_${lang}_ABI_COMPILED} PARENT_SCOPE)
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# Load the resulting information strings.
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if(CMAKE_${lang}_ABI_COMPILED)
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message(CHECK_PASS "done")
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file(STRINGS "${BIN}" ABI_STRINGS LIMIT_COUNT 32 REGEX "INFO:[A-Za-z0-9_]+\\[[^]]*\\]")
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set(ABI_SIZEOF_DPTR "NOTFOUND")
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set(ABI_BYTE_ORDER "NOTFOUND")
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set(ABI_NAME "NOTFOUND")
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foreach(info ${ABI_STRINGS})
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if("${info}" MATCHES "INFO:sizeof_dptr\\[0*([^]]*)\\]" AND NOT ABI_SIZEOF_DPTR)
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set(ABI_SIZEOF_DPTR "${CMAKE_MATCH_1}")
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endif()
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if("${info}" MATCHES "INFO:byte_order\\[(BIG_ENDIAN|LITTLE_ENDIAN)\\]")
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set(byte_order "${CMAKE_MATCH_1}")
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if(ABI_BYTE_ORDER STREQUAL "NOTFOUND")
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# Tentatively use the value because this is the first occurrence.
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set(ABI_BYTE_ORDER "${byte_order}")
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elseif(NOT ABI_BYTE_ORDER STREQUAL "${byte_order}")
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# Drop value because multiple occurrences do not match.
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set(ABI_BYTE_ORDER "")
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endif()
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endif()
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if("${info}" MATCHES "INFO:abi\\[([^]]*)\\]" AND NOT ABI_NAME)
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set(ABI_NAME "${CMAKE_MATCH_1}")
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endif()
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endforeach()
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if(ABI_SIZEOF_DPTR)
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set(CMAKE_${lang}_SIZEOF_DATA_PTR "${ABI_SIZEOF_DPTR}" PARENT_SCOPE)
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elseif(CMAKE_${lang}_SIZEOF_DATA_PTR_DEFAULT)
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set(CMAKE_${lang}_SIZEOF_DATA_PTR "${CMAKE_${lang}_SIZEOF_DATA_PTR_DEFAULT}" PARENT_SCOPE)
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endif()
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if(ABI_BYTE_ORDER)
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set(CMAKE_${lang}_BYTE_ORDER "${ABI_BYTE_ORDER}" PARENT_SCOPE)
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endif()
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if(ABI_NAME)
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set(CMAKE_${lang}_COMPILER_ABI "${ABI_NAME}" PARENT_SCOPE)
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endif()
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# Parse implicit include directory for this language, if available.
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if(CMAKE_${lang}_VERBOSE_FLAG)
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set (implicit_incdirs "")
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cmake_parse_implicit_include_info("${OUTPUT}" "${lang}"
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implicit_incdirs log rv)
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message(CONFIGURE_LOG
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"Parsed ${lang} implicit include dir info: rv=${rv}\n${log}\n\n")
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if("${rv}" STREQUAL "done")
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# Entries that we have been told to explicitly pass as standard include
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# directories will not be implicitly added by the compiler.
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if(CMAKE_${lang}_STANDARD_INCLUDE_DIRECTORIES)
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list(REMOVE_ITEM implicit_incdirs ${CMAKE_${lang}_STANDARD_INCLUDE_DIRECTORIES})
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endif()
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# We parsed implicit include directories, so override the default initializer.
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set(_CMAKE_${lang}_IMPLICIT_INCLUDE_DIRECTORIES_INIT "${implicit_incdirs}")
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endif()
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endif()
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set(CMAKE_${lang}_IMPLICIT_INCLUDE_DIRECTORIES "${_CMAKE_${lang}_IMPLICIT_INCLUDE_DIRECTORIES_INIT}" PARENT_SCOPE)
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# Parse implicit linker information for this language, if available.
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set(implicit_dirs "")
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set(implicit_objs "")
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set(implicit_libs "")
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set(implicit_fwks "")
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if(CMAKE_${lang}_VERBOSE_FLAG)
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CMAKE_PARSE_IMPLICIT_LINK_INFO("${OUTPUT}" implicit_libs implicit_dirs implicit_fwks log
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"${CMAKE_${lang}_IMPLICIT_OBJECT_REGEX}"
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COMPUTE_IMPLICIT_OBJECTS implicit_objs
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LANGUAGE ${lang})
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message(CONFIGURE_LOG
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"Parsed ${lang} implicit link information:\n${log}\n\n")
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endif()
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# for VS IDE Intel Fortran we have to figure out the
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# implicit link path for the fortran run time using
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# a try-compile
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if("${lang}" MATCHES "Fortran"
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AND "${CMAKE_GENERATOR}" MATCHES "Visual Studio")
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message(CHECK_START "Determine Intel Fortran Compiler Implicit Link Path")
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# Build a sample project which reports symbols.
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try_compile(IFORT_LIB_PATH_COMPILED
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PROJECT IntelFortranImplicit
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SOURCE_DIR ${CMAKE_ROOT}/Modules/IntelVSImplicitPath
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BINARY_DIR ${CMAKE_BINARY_DIR}/CMakeFiles/IntelVSImplicitPath
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CMAKE_FLAGS
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"-DCMAKE_Fortran_FLAGS:STRING=${CMAKE_Fortran_FLAGS}"
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OUTPUT_VARIABLE _output)
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file(WRITE
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"${CMAKE_BINARY_DIR}/CMakeFiles/IntelVSImplicitPath/output.txt"
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"${_output}")
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include(${CMAKE_BINARY_DIR}/CMakeFiles/IntelVSImplicitPath/output.cmake OPTIONAL)
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message(CHECK_PASS "done")
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endif()
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# Implicit link libraries cannot be used explicitly for multiple
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# OS X architectures, so we skip it.
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if(DEFINED CMAKE_OSX_ARCHITECTURES)
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if("${CMAKE_OSX_ARCHITECTURES}" MATCHES ";")
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set(implicit_libs "")
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endif()
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endif()
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if(DEFINED ENV{CMAKE_${lang}_IMPLICIT_LINK_DIRECTORIES_EXCLUDE})
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list(REMOVE_ITEM implicit_dirs $ENV{CMAKE_${lang}_IMPLICIT_LINK_DIRECTORIES_EXCLUDE})
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endif()
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set(CMAKE_${lang}_IMPLICIT_LINK_LIBRARIES "${implicit_libs}" PARENT_SCOPE)
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set(CMAKE_${lang}_IMPLICIT_LINK_DIRECTORIES "${implicit_dirs}" PARENT_SCOPE)
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set(CMAKE_${lang}_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES "${implicit_fwks}" PARENT_SCOPE)
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cmake_parse_library_architecture(${lang} "${implicit_dirs}" "${implicit_objs}" architecture_flag)
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if(architecture_flag)
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set(CMAKE_${lang}_LIBRARY_ARCHITECTURE "${architecture_flag}" PARENT_SCOPE)
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endif()
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else()
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message(CHECK_FAIL "failed")
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endif()
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endif()
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endfunction()
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