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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# Function to compile a source file to identify the compiler ABI.
# This is used internally by CMake and should not be included by user
# code.
include(${CMAKE_ROOT}/Modules/CMakeParseImplicitLinkInfo.cmake)
function(CMAKE_DETERMINE_COMPILER_ABI lang src)
if(NOT DEFINED CMAKE_${lang}_ABI_COMPILED)
message(STATUS "Detecting ${lang} compiler ABI info")
# Compile the ABI identification source.
set(BIN "${CMAKE_PLATFORM_INFO_DIR}/CMakeDetermineCompilerABI_${lang}.bin")
set(CMAKE_FLAGS )
if(DEFINED CMAKE_${lang}_VERBOSE_FLAG)
set(CMAKE_FLAGS "-DEXE_LINKER_FLAGS=${CMAKE_${lang}_VERBOSE_FLAG}")
endif()
if(NOT "x${CMAKE_${lang}_COMPILER_ID}" STREQUAL "xMSVC")
# Avoid adding our own platform standard libraries for compilers
# from which we might detect implicit link libraries.
list(APPEND CMAKE_FLAGS "-DCMAKE_${lang}_STANDARD_LIBRARIES=")
endif()
try_compile(CMAKE_${lang}_ABI_COMPILED
${CMAKE_BINARY_DIR} ${src}
CMAKE_FLAGS ${CMAKE_FLAGS}
# Ignore unused flags when we are just determining the ABI.
"--no-warn-unused-cli"
OUTPUT_VARIABLE OUTPUT
COPY_FILE "${BIN}"
COPY_FILE_ERROR _copy_error
)
# Move result from cache to normal variable.
set(CMAKE_${lang}_ABI_COMPILED ${CMAKE_${lang}_ABI_COMPILED})
unset(CMAKE_${lang}_ABI_COMPILED CACHE)
set(CMAKE_${lang}_ABI_COMPILED ${CMAKE_${lang}_ABI_COMPILED} PARENT_SCOPE)
# Load the resulting information strings.
if(CMAKE_${lang}_ABI_COMPILED AND NOT _copy_error)
message(STATUS "Detecting ${lang} compiler ABI info - done")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Detecting ${lang} compiler ABI info compiled with the following output:\n${OUTPUT}\n\n")
file(STRINGS "${BIN}" ABI_STRINGS LIMIT_COUNT 2 REGEX "INFO:[A-Za-z0-9_]+\\[[^]]*\\]")
foreach(info ${ABI_STRINGS})
if("${info}" MATCHES "INFO:sizeof_dptr\\[0*([^]]*)\\]")
set(ABI_SIZEOF_DPTR "${CMAKE_MATCH_1}")
endif()
if("${info}" MATCHES "INFO:abi\\[([^]]*)\\]")
set(ABI_NAME "${CMAKE_MATCH_1}")
endif()
endforeach()
if(ABI_SIZEOF_DPTR)
set(CMAKE_${lang}_SIZEOF_DATA_PTR "${ABI_SIZEOF_DPTR}" PARENT_SCOPE)
elseif(CMAKE_${lang}_SIZEOF_DATA_PTR_DEFAULT)
set(CMAKE_${lang}_SIZEOF_DATA_PTR "${CMAKE_${lang}_SIZEOF_DATA_PTR_DEFAULT}" PARENT_SCOPE)
endif()
if(ABI_NAME)
set(CMAKE_${lang}_COMPILER_ABI "${ABI_NAME}" PARENT_SCOPE)
endif()
# Parse implicit linker information for this language, if available.
set(implicit_dirs "")
set(implicit_libs "")
set(implicit_fwks "")
if(CMAKE_${lang}_VERBOSE_FLAG)
CMAKE_PARSE_IMPLICIT_LINK_INFO("${OUTPUT}" implicit_libs implicit_dirs implicit_fwks log
"${CMAKE_${lang}_IMPLICIT_OBJECT_REGEX}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Parsed ${lang} implicit link information from above output:\n${log}\n\n")
endif()
# for VS IDE Intel Fortran we have to figure out the
# implicit link path for the fortran run time using
# a try-compile
if("${lang}" MATCHES "Fortran"
AND "${CMAKE_GENERATOR}" MATCHES "Visual Studio")
set(_desc "Determine Intel Fortran Compiler Implicit Link Path")
message(STATUS "${_desc}")
# Build a sample project which reports symbols.
try_compile(IFORT_LIB_PATH_COMPILED
${CMAKE_BINARY_DIR}/CMakeFiles/IntelVSImplicitPath
${CMAKE_ROOT}/Modules/IntelVSImplicitPath
IntelFortranImplicit
CMAKE_FLAGS
"-DCMAKE_Fortran_FLAGS:STRING=${CMAKE_Fortran_FLAGS}"
OUTPUT_VARIABLE _output)
file(WRITE
"${CMAKE_BINARY_DIR}/CMakeFiles/IntelVSImplicitPath/output.txt"
"${_output}")
include(${CMAKE_BINARY_DIR}/CMakeFiles/IntelVSImplicitPath/output.cmake OPTIONAL)
set(_desc "Determine Intel Fortran Compiler Implicit Link Path -- done")
message(STATUS "${_desc}")
endif()
# Implicit link libraries cannot be used explicitly for multiple
# OS X architectures, so we skip it.
if(DEFINED CMAKE_OSX_ARCHITECTURES)
if("${CMAKE_OSX_ARCHITECTURES}" MATCHES ";")
set(implicit_libs "")
endif()
endif()
set(CMAKE_${lang}_IMPLICIT_LINK_LIBRARIES "${implicit_libs}" PARENT_SCOPE)
set(CMAKE_${lang}_IMPLICIT_LINK_DIRECTORIES "${implicit_dirs}" PARENT_SCOPE)
set(CMAKE_${lang}_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES "${implicit_fwks}" PARENT_SCOPE)
# Detect library architecture directory name.
if(CMAKE_LIBRARY_ARCHITECTURE_REGEX)
foreach(dir ${implicit_dirs})
if("${dir}" MATCHES "/lib/${CMAKE_LIBRARY_ARCHITECTURE_REGEX}$")
get_filename_component(arch "${dir}" NAME)
set(CMAKE_${lang}_LIBRARY_ARCHITECTURE "${arch}" PARENT_SCOPE)
break()
endif()
endforeach()
endif()
else()
message(STATUS "Detecting ${lang} compiler ABI info - failed")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Detecting ${lang} compiler ABI info failed to compile with the following output:\n${OUTPUT}\n${_copy_error}\n\n")
endif()
endif()
endfunction()
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