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add cmake 3.21.0
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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.
#[=======================================================================[.rst:
FindLAPACK
----------
Find Linear Algebra PACKage (LAPACK) library
This module finds an installed Fortran library that implements the
`LAPACK linear-algebra interface`_.
At least one of the ``C``, ``CXX``, or ``Fortran`` languages must be enabled.
.. _`LAPACK linear-algebra interface`: http://www.netlib.org/lapack/
Input Variables
^^^^^^^^^^^^^^^
The following variables may be set to influence this module's behavior:
``BLA_STATIC``
if ``ON`` use static linkage
``BLA_VENDOR``
Set to one of the :ref:`BLAS/LAPACK Vendors` to search for BLAS only
from the specified vendor. If not set, all vendors are considered.
``BLA_F95``
if ``ON`` tries to find the BLAS95/LAPACK95 interfaces
``BLA_PREFER_PKGCONFIG``
.. versionadded:: 3.20
if set ``pkg-config`` will be used to search for a LAPACK library first
and if one is found that is preferred
Imported targets
^^^^^^^^^^^^^^^^
This module defines the following :prop_tgt:`IMPORTED` targets:
``LAPACK::LAPACK``
.. versionadded:: 3.18
The libraries to use for LAPACK, if found.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``LAPACK_FOUND``
library implementing the LAPACK interface is found
``LAPACK_LINKER_FLAGS``
uncached list of required linker flags (excluding ``-l`` and ``-L``).
``LAPACK_LIBRARIES``
uncached list of libraries (using full path name) to link against
to use LAPACK
``LAPACK95_LIBRARIES``
uncached list of libraries (using full path name) to link against
to use LAPACK95
``LAPACK95_FOUND``
library implementing the LAPACK95 interface is found
Intel MKL
^^^^^^^^^
To use the Intel MKL implementation of LAPACK, a project must enable at least
one of the ``C`` or ``CXX`` languages. Set ``BLA_VENDOR`` to an Intel MKL
variant either on the command-line as ``-DBLA_VENDOR=Intel10_64lp`` or in
project code:
.. code-block:: cmake
set(BLA_VENDOR Intel10_64lp)
find_package(LAPACK)
In order to build a project using Intel MKL, and end user must first
establish an Intel MKL environment. See the :module:`FindBLAS` module
section on :ref:`Intel MKL` for details.
#]=======================================================================]
# The approach follows that of the ``autoconf`` macro file, ``acx_lapack.m4``
# (distributed at http://ac-archive.sourceforge.net/ac-archive/acx_lapack.html).
if(CMAKE_Fortran_COMPILER_LOADED)
include(${CMAKE_CURRENT_LIST_DIR}/CheckFortranFunctionExists.cmake)
else()
include(${CMAKE_CURRENT_LIST_DIR}/CheckFunctionExists.cmake)
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
function(_add_lapack_target)
if(LAPACK_FOUND AND NOT TARGET LAPACK::LAPACK)
add_library(LAPACK::LAPACK INTERFACE IMPORTED)
# Filter out redundant BLAS info and replace with the BLAS target
set(_lapack_libs "${LAPACK_LIBRARIES}")
set(_lapack_flags "${LAPACK_LINKER_FLAGS}")
if(TARGET BLAS::BLAS)
if(_lapack_libs AND BLAS_LIBRARIES)
foreach(_blas_lib IN LISTS BLAS_LIBRARIES)
list(REMOVE_ITEM _lapack_libs "${_blas_lib}")
endforeach()
endif()
if(_lapack_flags AND BLAS_LINKER_FLAGS)
foreach(_blas_flag IN LISTS BLAS_LINKER_FLAGS)
list(REMOVE_ITEM _lapack_flags "${_blas_flag}")
endforeach()
endif()
list(APPEND _lapack_libs BLAS::BLAS)
endif()
if(_lapack_libs)
set_target_properties(LAPACK::LAPACK PROPERTIES
INTERFACE_LINK_LIBRARIES "${_lapack_libs}"
)
endif()
if(_lapack_flags)
set_target_properties(LAPACK::LAPACK PROPERTIES
INTERFACE_LINK_OPTIONS "${_lapack_flags}"
)
endif()
endif()
endfunction()
# TODO: move this stuff to a separate module
function(CHECK_LAPACK_LIBRARIES LIBRARIES _prefix _name _flags _list _deps _addlibdir _subdirs _blas)
# This function checks for the existence of the combination of libraries
# given by _list. If the combination is found, this checks whether can link
# against that library combination using the name of a routine given by _name
# using the linker flags given by _flags. If the combination of libraries is
# found and passes the link test, ${LIBRARIES} is set to the list of complete
# library paths that have been found. Otherwise, ${LIBRARIES} is set to FALSE.
set(_libraries_work TRUE)
set(_libraries)
set(_combined_name)
if(BLA_STATIC)
if(WIN32)
set(CMAKE_FIND_LIBRARY_SUFFIXES .lib ${CMAKE_FIND_LIBRARY_SUFFIXES})
else()
set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
else()
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
# for ubuntu's libblas3gf and liblapack3gf packages
set(CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES} .so.3gf)
endif()
endif()
set(_extaddlibdir "${_addlibdir}")
if(WIN32)
list(APPEND _extaddlibdir ENV LIB)
elseif(APPLE)
list(APPEND _extaddlibdir ENV DYLD_LIBRARY_PATH)
else()
list(APPEND _extaddlibdir ENV LD_LIBRARY_PATH)
endif()
list(APPEND _extaddlibdir "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}")
foreach(_library ${_list})
if(_library MATCHES "^-")
# Respect linker flags as-is (required by MKL)
list(APPEND _libraries "${_library}")
else()
string(REGEX REPLACE "[^A-Za-z0-9]" "_" _lib_var "${_library}")
set(_combined_name ${_combined_name}_${_lib_var})
if(NOT "${_deps}" STREQUAL "")
set(_combined_name ${_combined_name}_deps)
endif()
if(_libraries_work)
find_library(${_prefix}_${_lib_var}_LIBRARY
NAMES ${_library}
NAMES_PER_DIR
PATHS ${_extaddlibdir}
PATH_SUFFIXES ${_subdirs}
)
mark_as_advanced(${_prefix}_${_lib_var}_LIBRARY)
list(APPEND _libraries ${${_prefix}_${_lib_var}_LIBRARY})
set(_libraries_work ${${_prefix}_${_lib_var}_LIBRARY})
endif()
endif()
endforeach()
foreach(_flag ${_flags})
string(REGEX REPLACE "[^A-Za-z0-9]" "_" _flag_var "${_flag}")
set(_combined_name ${_combined_name}_${_flag_var})
endforeach()
if(_libraries_work)
# Test this combination of libraries.
set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${_libraries} ${_blas} ${_deps})
set(CMAKE_REQUIRED_QUIET ${LAPACK_FIND_QUIETLY})
if(CMAKE_Fortran_COMPILER_LOADED)
check_fortran_function_exists("${_name}" ${_prefix}${_combined_name}_WORKS)
else()
check_function_exists("${_name}_" ${_prefix}${_combined_name}_WORKS)
endif()
set(CMAKE_REQUIRED_LIBRARIES)
set(_libraries_work ${${_prefix}${_combined_name}_WORKS})
endif()
if(_libraries_work)
if("${_list}${_blas}" STREQUAL "")
set(_libraries "${LIBRARIES}-PLACEHOLDER-FOR-EMPTY-LIBRARIES")
else()
list(APPEND _libraries ${_blas} ${_deps})
endif()
else()
set(_libraries FALSE)
endif()
set(${LIBRARIES} "${_libraries}" PARENT_SCOPE)
endfunction()
macro(_lapack_find_dependency dep)
set(_lapack_quiet_arg)
if(LAPACK_FIND_QUIETLY)
set(_lapack_quiet_arg QUIET)
endif()
set(_lapack_required_arg)
if(LAPACK_FIND_REQUIRED)
set(_lapack_required_arg REQUIRED)
endif()
find_package(${dep} ${ARGN}
${_lapack_quiet_arg}
${_lapack_required_arg}
)
if (NOT ${dep}_FOUND)
set(LAPACK_NOT_FOUND_MESSAGE "LAPACK could not be found because dependency ${dep} could not be found.")
endif()
set(_lapack_required_arg)
set(_lapack_quiet_arg)
endmacro()
set(LAPACK_LINKER_FLAGS)
set(LAPACK_LIBRARIES)
set(LAPACK95_LIBRARIES)
set(_lapack_fphsa_req_var LAPACK_LIBRARIES)
# Check the language being used
if(NOT (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED OR CMAKE_Fortran_COMPILER_LOADED))
set(LAPACK_NOT_FOUND_MESSAGE
"FindLAPACK requires Fortran, C, or C++ to be enabled.")
endif()
# Load BLAS
if(NOT LAPACK_NOT_FOUND_MESSAGE)
_lapack_find_dependency(BLAS)
endif()
# Search with pkg-config if specified
if(BLA_PREFER_PKGCONFIG)
find_package(PkgConfig)
pkg_check_modules(PKGC_LAPACK lapack)
if(PKGC_LAPACK_FOUND)
set(LAPACK_FOUND TRUE)
set(LAPACK_LIBRARIES "${PKGC_LAPACK_LINK_LIBRARIES}")
if (BLAS_LIBRARIES)
list(APPEND LAPACK_LIBRARIES "${BLAS_LIBRARIES}")
endif()
_add_lapack_target()
return()
endif()
endif()
# Search for different LAPACK distributions if BLAS is found
if(NOT LAPACK_NOT_FOUND_MESSAGE)
set(LAPACK_LINKER_FLAGS ${BLAS_LINKER_FLAGS})
if(NOT $ENV{BLA_VENDOR} STREQUAL "")
set(BLA_VENDOR $ENV{BLA_VENDOR})
elseif(NOT BLA_VENDOR)
set(BLA_VENDOR "All")
endif()
# LAPACK in the Intel MKL 10+ library?
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
AND (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED))
# System-specific settings
if(NOT WIN32)
set(LAPACK_mkl_LM "-lm")
set(LAPACK_mkl_LDL "-ldl")
endif()
_lapack_find_dependency(Threads)
if(BLA_VENDOR MATCHES "_64ilp")
set(LAPACK_mkl_ILP_MODE "ilp64")
else()
set(LAPACK_mkl_ILP_MODE "lp64")
endif()
set(LAPACK_SEARCH_LIBS "")
if(BLA_F95)
set(LAPACK_mkl_SEARCH_SYMBOL "cheev_f95")
set(_LIBRARIES LAPACK95_LIBRARIES)
set(_BLAS_LIBRARIES ${BLAS95_LIBRARIES})
# old
list(APPEND LAPACK_SEARCH_LIBS
"mkl_lapack95")
# new >= 10.3
list(APPEND LAPACK_SEARCH_LIBS
"mkl_intel_c")
list(APPEND LAPACK_SEARCH_LIBS
"mkl_lapack95_${LAPACK_mkl_ILP_MODE}")
else()
set(LAPACK_mkl_SEARCH_SYMBOL "cheev")
set(_LIBRARIES LAPACK_LIBRARIES)
set(_BLAS_LIBRARIES ${BLAS_LIBRARIES})
# old and new >= 10.3
list(APPEND LAPACK_SEARCH_LIBS
"mkl_lapack")
endif()
# MKL uses a multitude of partially platform-specific subdirectories:
if(BLA_VENDOR STREQUAL "Intel10_32")
set(LAPACK_mkl_ARCH_NAME "ia32")
else()
set(LAPACK_mkl_ARCH_NAME "intel64")
endif()
if(WIN32)
set(LAPACK_mkl_OS_NAME "win")
elseif(APPLE)
set(LAPACK_mkl_OS_NAME "mac")
else()
set(LAPACK_mkl_OS_NAME "lin")
endif()
if(DEFINED ENV{MKLROOT})
file(TO_CMAKE_PATH "$ENV{MKLROOT}" LAPACK_mkl_MKLROOT)
# If MKLROOT points to the subdirectory 'mkl', use the parent directory instead
# so we can better detect other relevant libraries in 'compiler' or 'tbb':
get_filename_component(LAPACK_mkl_MKLROOT_LAST_DIR "${LAPACK_mkl_MKLROOT}" NAME)
if(LAPACK_mkl_MKLROOT_LAST_DIR STREQUAL "mkl")
get_filename_component(LAPACK_mkl_MKLROOT "${LAPACK_mkl_MKLROOT}" DIRECTORY)
endif()
endif()
set(LAPACK_mkl_LIB_PATH_SUFFIXES
"compiler/lib" "compiler/lib/${LAPACK_mkl_ARCH_NAME}_${LAPACK_mkl_OS_NAME}"
"compiler/lib/${LAPACK_mkl_ARCH_NAME}"
"mkl/lib" "mkl/lib/${LAPACK_mkl_ARCH_NAME}_${LAPACK_mkl_OS_NAME}"
"mkl/lib/${LAPACK_mkl_ARCH_NAME}"
"lib" "lib/${LAPACK_mkl_ARCH_NAME}_${LAPACK_mkl_OS_NAME}"
"lib/${LAPACK_mkl_ARCH_NAME}"
)
# First try empty lapack libs
if(NOT ${_LIBRARIES})
check_lapack_libraries(
${_LIBRARIES}
LAPACK
${LAPACK_mkl_SEARCH_SYMBOL}
""
""
"${CMAKE_THREAD_LIBS_INIT};${LAPACK_mkl_LM};${LAPACK_mkl_LDL}"
"${LAPACK_mkl_MKLROOT}"
"${LAPACK_mkl_LIB_PATH_SUFFIXES}"
"${_BLAS_LIBRARIES}"
)
endif()
# Then try the search libs
foreach(IT ${LAPACK_SEARCH_LIBS})
string(REPLACE " " ";" SEARCH_LIBS ${IT})
if(NOT ${_LIBRARIES})
check_lapack_libraries(
${_LIBRARIES}
LAPACK
${LAPACK_mkl_SEARCH_SYMBOL}
""
"${SEARCH_LIBS}"
"${CMAKE_THREAD_LIBS_INIT};${LAPACK_mkl_LM};${LAPACK_mkl_LDL}"
"${LAPACK_mkl_MKLROOT}"
"${LAPACK_mkl_LIB_PATH_SUFFIXES}"
"${_BLAS_LIBRARIES}"
)
endif()
endforeach()
unset(LAPACK_mkl_ILP_MODE)
unset(LAPACK_mkl_SEARCH_SYMBOL)
unset(LAPACK_mkl_LM)
unset(LAPACK_mkl_LDL)
unset(LAPACK_mkl_MKLROOT)
unset(LAPACK_mkl_ARCH_NAME)
unset(LAPACK_mkl_OS_NAME)
unset(LAPACK_mkl_LIB_PATH_SUFFIXES)
endif()
# gotoblas? (http://www.tacc.utexas.edu/tacc-projects/gotoblas2)
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR STREQUAL "Goto" OR BLA_VENDOR STREQUAL "All"))
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"goto2"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# FlexiBLAS? (http://www.mpi-magdeburg.mpg.de/mpcsc/software/FlexiBLAS/)
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR STREQUAL "FlexiBLAS" OR BLA_VENDOR STREQUAL "All"))
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"flexiblas"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# OpenBLAS? (http://www.openblas.net)
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR STREQUAL "OpenBLAS" OR BLA_VENDOR STREQUAL "All"))
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"openblas"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# ArmPL? (https://developer.arm.com/tools-and-software/server-and-hpc/compile/arm-compiler-for-linux/arm-performance-libraries)
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR MATCHES "Arm" OR BLA_VENDOR STREQUAL "All"))
# Check for 64bit Integer support
if(BLA_VENDOR MATCHES "_ilp64")
set(LAPACK_armpl_LIB "armpl_ilp64")
else()
set(LAPACK_armpl_LIB "armpl_lp64")
endif()
# Check for OpenMP support, VIA BLA_VENDOR of Arm_mp or Arm_ipl64_mp
if(BLA_VENDOR MATCHES "_mp")
set(LAPACK_armpl_LIB "${LAPACK_armpl_LIB}_mp")
endif()
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"${LAPACK_armpl_LIB}"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# FLAME's blis library? (https://github.com/flame/blis)
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR STREQUAL "FLAME" OR BLA_VENDOR STREQUAL "All"))
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"flame"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# BLAS in acml library?
if(BLA_VENDOR MATCHES "ACML" OR BLA_VENDOR STREQUAL "All")
if(BLAS_LIBRARIES MATCHES ".+acml.+")
set(LAPACK_LIBRARIES ${BLAS_LIBRARIES})
endif()
endif()
# Apple LAPACK library?
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR STREQUAL "Apple" OR BLA_VENDOR STREQUAL "All"))
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"Accelerate"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# Apple NAS (vecLib) library?
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR STREQUAL "NAS" OR BLA_VENDOR STREQUAL "All"))
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"vecLib"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# Elbrus Math Library?
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR MATCHES "EML" OR BLA_VENDOR STREQUAL "All"))
set(LAPACK_EML_LIB "eml")
# Check for OpenMP support, VIA BLA_VENDOR of eml_mt
if(BLA_VENDOR MATCHES "_mt")
set(LAPACK_EML_LIB "${LAPACK_EML_LIB}_mt")
endif()
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"${LAPACK_EML_LIB}"
""
""
""
"${BLAS_LIBRARIES}"
)
endif()
# Fujitsu SSL2 Library?
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR MATCHES "Fujitsu_SSL2" OR BLA_VENDOR STREQUAL "All"))
if(BLA_VENDOR STREQUAL "Fujitsu_SSL2BLAMP")
set(_ssl2_suffix BLAMP)
else()
set(_ssl2_suffix)
endif()
set(_ssl2_blas)
if(BLAS_LIBRARIES STREQUAL "")
set(_ssl2_blas "${BLAS_LINKER_FLAGS}")
else()
set(_ssl2_blas "${BLAS_LIBRARIES} ${BLAS_LINKER_FLAGS}")
endif()
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
"-SSL2${_ssl2_suffix}"
""
""
""
""
"${_ssl2_blas}"
)
if(LAPACK_LIBRARIES)
set(LAPACK_LINKER_FLAGS "-SSL2${_ssl2_suffix}")
set(_lapack_fphsa_req_var LAPACK_LINKER_FLAGS)
endif()
unset(_ssl2_suffix)
endif()
# NVHPC Library?
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR MATCHES "NVHPC" OR BLA_VENDOR STREQUAL "All"))
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"lapack"
"-fortranlibs"
""
""
"${BLAS_LIBRARIES}"
)
endif()
# Generic LAPACK library?
if(NOT LAPACK_LIBRARIES
AND (BLA_VENDOR STREQUAL "Generic"
OR BLA_VENDOR STREQUAL "ATLAS"
OR BLA_VENDOR STREQUAL "All"))
if(BLA_STATIC)
# We do not know for sure how the LAPACK reference implementation
# is built on this host. Guess typical dependencies.
set(_lapack_generic_deps "-lgfortran;-lm")
else()
set(_lapack_generic_deps "")
endif()
check_lapack_libraries(
LAPACK_LIBRARIES
LAPACK
cheev
""
"lapack"
"${_lapack_generic_deps}"
""
""
"${BLAS_LIBRARIES}"
)
unset(_lapack_generic_deps)
endif()
endif()
if(BLA_F95)
set(LAPACK_LIBRARIES "${LAPACK95_LIBRARIES}")
endif()
if(LAPACK_NOT_FOUND_MESSAGE)
set(LAPACK_NOT_FOUND_MESSAGE
REASON_FAILURE_MESSAGE ${LAPACK_NOT_FOUND_MESSAGE})
endif()
find_package_handle_standard_args(LAPACK REQUIRED_VARS ${_lapack_fphsa_req_var}
${LAPACK_NOT_FOUND_MESSAGE})
unset(LAPACK_NOT_FOUND_MESSAGE)
if(BLA_F95)
set(LAPACK95_FOUND ${LAPACK_FOUND})
endif()
# On compilers that implicitly link LAPACK (such as ftn, cc, and CC on Cray HPC machines)
# we used a placeholder for empty LAPACK_LIBRARIES to get through our logic above.
if(LAPACK_LIBRARIES STREQUAL "LAPACK_LIBRARIES-PLACEHOLDER-FOR-EMPTY-LIBRARIES")
set(LAPACK_LIBRARIES "")
endif()
_add_lapack_target()
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