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cmake/Modules/FindBLAS.cmake

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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:
FindBLAS
--------
Find Basic Linear Algebra Subprograms (BLAS) library
This module finds an installed Fortran library that implements the
`BLAS linear-algebra interface`_.
At least one of the ``C``, ``CXX``, or ``Fortran`` languages must be enabled.
.. _`BLAS linear-algebra interface`: https://netlib.org/blas/
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 interfaces
``BLA_PREFER_PKGCONFIG``
.. versionadded:: 3.11
if set ``pkg-config`` will be used to search for a BLAS library first
and if one is found that is preferred
``BLA_PKGCONFIG_BLAS``
.. versionadded:: 3.25
If set, the ``pkg-config`` method will look for this module name instead of
just ``blas``.
``BLA_SIZEOF_INTEGER``
.. versionadded:: 3.22
Specify the BLAS/LAPACK library integer size:
``4``
Search for a BLAS/LAPACK with 32-bit integer interfaces.
``8``
Search for a BLAS/LAPACK with 64-bit integer interfaces.
``ANY``
Search for any BLAS/LAPACK.
Most likely, a BLAS/LAPACK with 32-bit integer interfaces will be found.
Imported targets
^^^^^^^^^^^^^^^^
This module defines the following :prop_tgt:`IMPORTED` targets:
``BLAS::BLAS``
.. versionadded:: 3.18
The libraries to use for BLAS, if found.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``BLAS_FOUND``
library implementing the BLAS interface is found
``BLAS_LINKER_FLAGS``
uncached list of required linker flags (excluding ``-l`` and ``-L``).
``BLAS_LIBRARIES``
uncached list of libraries (using full path name) to link against
to use BLAS (may be empty if compiler implicitly links BLAS)
``BLAS95_LIBRARIES``
uncached list of libraries (using full path name) to link against
to use BLAS95 interface
``BLAS95_FOUND``
library implementing the BLAS95 interface is found
.. _`BLAS/LAPACK Vendors`:
BLAS/LAPACK Vendors
^^^^^^^^^^^^^^^^^^^
``Generic``
Generic reference implementation
``ACML``, ``ACML_MP``, ``ACML_GPU``
AMD Core Math Library
``AOCL``, ``AOCL_mt``
.. versionadded:: 3.27
AMD Optimizing CPU Libraries
``Apple``, ``NAS``
Apple BLAS (Accelerate), and Apple NAS (vecLib)
``Arm``, ``Arm_mp``, ``Arm_ilp64``, ``Arm_ilp64_mp``
.. versionadded:: 3.18
Arm Performance Libraries
``ATLAS``
Automatically Tuned Linear Algebra Software
``CXML``, ``DXML``
Compaq/Digital Extended Math Library
``EML``, ``EML_mt``
.. versionadded:: 3.20
Elbrus Math Library
``FLAME``
.. versionadded:: 3.11
BLIS Framework
``FlexiBLAS``
.. versionadded:: 3.19
``Fujitsu_SSL2``, ``Fujitsu_SSL2BLAMP``, ``Fujitsu_SSL2SVE``, ``Fujitsu_SSL2BLAMPSVE``
.. versionadded:: 3.20
Fujitsu SSL2 serial and parallel blas/lapack with SVE instructions
``Goto``
GotoBLAS
``IBMESSL``, ``IBMESSL_SMP``
IBM Engineering and Scientific Subroutine Library
``Intel``
Intel MKL 32 bit and 64 bit obsolete versions
``Intel10_32``
Intel MKL v10 32 bit, threaded code
``Intel10_64lp``
Intel MKL v10+ 64 bit, threaded code, lp64 model
``Intel10_64lp_seq``
Intel MKL v10+ 64 bit, sequential code, lp64 model
``Intel10_64ilp``
.. versionadded:: 3.13
Intel MKL v10+ 64 bit, threaded code, ilp64 model
``Intel10_64ilp_seq``
.. versionadded:: 3.13
Intel MKL v10+ 64 bit, sequential code, ilp64 model
``Intel10_64_dyn``
.. versionadded:: 3.17
Intel MKL v10+ 64 bit, single dynamic library
``libblastrampoline``
.. versionadded:: 3.30
A BLAS/LAPACK demuxing library using PLT trampolines
``NVHPC``
.. versionadded:: 3.21
NVIDIA HPC SDK
``OpenBLAS``
.. versionadded:: 3.6
``PhiPACK``
Portable High Performance ANSI C (PHiPAC)
``SCSL``, ``SCSL_mp``
Scientific Computing Software Library
``SGIMATH``
SGI Scientific Mathematical Library
``SunPerf``
Sun Performance Library
.. _`Intel MKL`:
Intel MKL
^^^^^^^^^
To use the Intel MKL implementation of BLAS, 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(BLAS)
In order to build a project using Intel MKL, and end user must first
establish an Intel MKL environment:
Intel oneAPI
Source the full Intel environment script:
.. code-block:: shell
. /opt/intel/oneapi/setvars.sh
Or, source the MKL component environment script:
.. code-block:: shell
. /opt/intel/oneapi/mkl/latest/env/vars.sh
Intel Classic
Source the full Intel environment script:
.. code-block:: shell
. /opt/intel/bin/compilervars.sh intel64
Or, source the MKL component environment script:
.. code-block:: shell
. /opt/intel/mkl/bin/mklvars.sh intel64
The above environment scripts set the ``MKLROOT`` environment variable
to the top of the MKL installation. They also add the location of the
runtime libraries to the dynamic library loader environment variable for
your platform (e.g. ``LD_LIBRARY_PATH``). This is necessary for programs
linked against MKL to run.
.. note::
As of Intel oneAPI 2021.2, loading only the MKL component does not
make all of its dependencies available. In particular, the ``iomp5``
library must be available separately, or provided by also loading
the compiler component environment:
.. code-block:: shell
. /opt/intel/oneapi/compiler/latest/env/vars.sh
#]=======================================================================]
# The approach follows that of the ``autoconf`` macro file, ``acx_blas.m4``
# (distributed at http://ac-archive.sourceforge.net/ac-archive/acx_blas.html).
# Check the language being used
if(NOT (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED OR CMAKE_Fortran_COMPILER_LOADED))
if(BLAS_FIND_REQUIRED)
message(FATAL_ERROR "FindBLAS requires Fortran, C, or C++ to be enabled.")
else()
message(STATUS "Looking for BLAS... - NOT found (Unsupported languages)")
return()
endif()
endif()
function(_add_blas_target)
if(BLAS_FOUND AND NOT TARGET BLAS::BLAS)
add_library(BLAS::BLAS INTERFACE IMPORTED)
if(BLAS_LIBRARIES)
set_target_properties(BLAS::BLAS PROPERTIES
INTERFACE_LINK_LIBRARIES "${BLAS_LIBRARIES}"
)
endif()
if(BLAS_LINKER_FLAGS)
set_target_properties(BLAS::BLAS PROPERTIES
INTERFACE_LINK_OPTIONS "${BLAS_LINKER_FLAGS}"
)
endif()
endif()
endfunction()
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)
if(BLA_PREFER_PKGCONFIG)
if(NOT BLA_PKGCONFIG_BLAS)
set(BLA_PKGCONFIG_BLAS "blas")
endif()
find_package(PkgConfig QUIET)
pkg_check_modules(PKGC_BLAS QUIET ${BLA_PKGCONFIG_BLAS})
if(PKGC_BLAS_FOUND)
set(BLAS_FOUND ${PKGC_BLAS_FOUND})
set(BLAS_LIBRARIES "${PKGC_BLAS_LINK_LIBRARIES}")
_add_blas_target()
return()
endif()
endif()
# TODO: move this stuff to a separate module
function(CHECK_BLAS_LIBRARIES LIBRARIES _prefix _name _flags _list _deps _addlibdir _subdirs)
# 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 "${_library}")
string(APPEND _combined_name "_${_lib_var}")
if(NOT "${_deps}" STREQUAL "")
string(APPEND _combined_name "_deps")
endif()
if(_libraries_work)
find_library(${_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}")
string(APPEND _combined_name "_${_flag_var}")
endforeach()
if(_libraries_work)
# Test this combination of libraries.
set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${_libraries} ${_deps})
set(CMAKE_REQUIRED_QUIET ${BLAS_FIND_QUIETLY})
if(CMAKE_Fortran_COMPILER_LOADED)
check_fortran_function_exists("${_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}" STREQUAL "")
set(_libraries "${LIBRARIES}-PLACEHOLDER-FOR-EMPTY-LIBRARIES")
else()
list(APPEND _libraries ${_deps})
endif()
else()
set(_libraries FALSE)
endif()
set(${LIBRARIES} "${_libraries}" PARENT_SCOPE)
endfunction()
set(BLAS_LINKER_FLAGS)
set(BLAS_LIBRARIES)
set(BLAS95_LIBRARIES)
set(_blas_fphsa_req_var BLAS_LIBRARIES)
if(NOT BLA_VENDOR)
if(NOT "$ENV{BLA_VENDOR}" STREQUAL "")
set(BLA_VENDOR "$ENV{BLA_VENDOR}")
else()
set(BLA_VENDOR "All")
endif()
endif()
if(NOT BLA_SIZEOF_INTEGER)
# in the reality we do not know which API of BLAS/LAPACK is masked in library
set(_blas_sizeof_integer "ANY")
elseif((BLA_SIZEOF_INTEGER STREQUAL "ANY") OR
(BLA_SIZEOF_INTEGER STREQUAL "4") OR
(BLA_SIZEOF_INTEGER STREQUAL "8"))
set(_blas_sizeof_integer ${BLA_SIZEOF_INTEGER})
else()
message(FATAL_ERROR "BLA_SIZEOF_INTEGER can have only <no value>, ANY, 4, or 8 values")
endif()
# Implicitly linked BLAS libraries?
if(BLA_VENDOR STREQUAL "All")
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
""
""
""
""
)
endif()
if(BLAS_WORKS)
# Give a more helpful "found" message
set(BLAS_WORKS "implicitly linked")
set(_blas_fphsa_req_var BLAS_WORKS)
endif()
endif()
# BLAS in the Intel MKL 10+ library?
if(BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
if(NOT BLAS_LIBRARIES)
if(CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED)
# System-specific settings
if(WIN32)
if(BLA_STATIC)
set(BLAS_mkl_DLL_SUFFIX "")
else()
set(BLAS_mkl_DLL_SUFFIX "_dll")
endif()
else()
if(BLA_STATIC)
set(BLAS_mkl_START_GROUP "-Wl,--start-group")
set(BLAS_mkl_END_GROUP "-Wl,--end-group")
else()
set(BLAS_mkl_START_GROUP "")
set(BLAS_mkl_END_GROUP "")
endif()
# Switch to GNU Fortran support layer if needed (but not on Apple, where MKL does not provide it)
if(CMAKE_Fortran_COMPILER_LOADED AND (CMAKE_Fortran_COMPILER_ID STREQUAL "GNU" OR CMAKE_Fortran_COMPILER_ID STREQUAL "LCC") AND NOT APPLE)
set(BLAS_mkl_INTFACE "gf")
set(BLAS_mkl_THREADING "gnu")
set(BLAS_mkl_OMP "gomp")
else()
set(BLAS_mkl_INTFACE "intel")
set(BLAS_mkl_THREADING "intel")
set(BLAS_mkl_OMP "iomp5")
endif()
set(BLAS_mkl_LM "-lm")
set(BLAS_mkl_LDL "-ldl")
endif()
if(BLAS_FIND_QUIETLY OR NOT BLAS_FIND_REQUIRED)
find_package(Threads)
else()
find_package(Threads REQUIRED)
endif()
if(_blas_sizeof_integer EQUAL 8)
set(BLAS_mkl_ILP_MODE "ilp64")
elseif(_blas_sizeof_integer EQUAL 4)
set(BLAS_mkl_ILP_MODE "lp64")
else()
if(BLA_VENDOR MATCHES "_64ilp")
set(BLAS_mkl_ILP_MODE "ilp64")
else()
set(BLAS_mkl_ILP_MODE "lp64")
endif()
endif()
set(BLAS_SEARCH_LIBS "")
if(BLA_F95)
set(BLAS_mkl_SEARCH_SYMBOL "sgemm_f95")
set(_BLAS_LIBRARIES BLAS95_LIBRARIES)
if(WIN32)
# Find the main file (32-bit or 64-bit)
set(BLAS_SEARCH_LIBS_WIN_MAIN "")
if(BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
"mkl_blas95${BLAS_mkl_DLL_SUFFIX} mkl_intel_c${BLAS_mkl_DLL_SUFFIX}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
"mkl_blas95_${BLAS_mkl_ILP_MODE}${BLAS_mkl_DLL_SUFFIX} mkl_intel_${BLAS_mkl_ILP_MODE}${BLAS_mkl_DLL_SUFFIX}")
endif()
# Add threading/sequential libs
set(BLAS_SEARCH_LIBS_WIN_THREAD "")
if(BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
# old version
list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
"libguide40 mkl_intel_thread${BLAS_mkl_DLL_SUFFIX}")
# mkl >= 10.3
list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
"libiomp5md mkl_intel_thread${BLAS_mkl_DLL_SUFFIX}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
"mkl_sequential${BLAS_mkl_DLL_SUFFIX}")
endif()
# Cartesian product of the above
foreach(MAIN ${BLAS_SEARCH_LIBS_WIN_MAIN})
foreach(THREAD ${BLAS_SEARCH_LIBS_WIN_THREAD})
list(APPEND BLAS_SEARCH_LIBS
"${MAIN} ${THREAD} mkl_core${BLAS_mkl_DLL_SUFFIX}")
endforeach()
endforeach()
else()
if(BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
# old version
list(APPEND BLAS_SEARCH_LIBS
"mkl_blas95 mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
# mkl >= 10.3
list(APPEND BLAS_SEARCH_LIBS
"${BLAS_mkl_START_GROUP} mkl_blas95 mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_END_GROUP} ${BLAS_mkl_OMP}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
# old version
list(APPEND BLAS_SEARCH_LIBS
"mkl_blas95 mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
# mkl >= 10.3
list(APPEND BLAS_SEARCH_LIBS
"${BLAS_mkl_START_GROUP} mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_END_GROUP} ${BLAS_mkl_OMP}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS
"${BLAS_mkl_START_GROUP} mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core ${BLAS_mkl_END_GROUP}")
endif()
endif()
else()
set(BLAS_mkl_SEARCH_SYMBOL sgemm)
set(_BLAS_LIBRARIES BLAS_LIBRARIES)
if(WIN32)
# Find the main file (32-bit or 64-bit)
set(BLAS_SEARCH_LIBS_WIN_MAIN "")
if(BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
"mkl_intel_c${BLAS_mkl_DLL_SUFFIX}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
"mkl_intel_${BLAS_mkl_ILP_MODE}${BLAS_mkl_DLL_SUFFIX}")
endif()
# Add threading/sequential libs
set(BLAS_SEARCH_LIBS_WIN_THREAD "")
if(BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
"libiomp5md mkl_intel_thread${BLAS_mkl_DLL_SUFFIX}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
# old version
list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
"libguide40 mkl_intel_thread${BLAS_mkl_DLL_SUFFIX}")
# mkl >= 10.3
list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
"libiomp5md mkl_intel_thread${BLAS_mkl_DLL_SUFFIX}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
"mkl_sequential${BLAS_mkl_DLL_SUFFIX}")
endif()
# Cartesian product of the above
foreach(MAIN ${BLAS_SEARCH_LIBS_WIN_MAIN})
foreach(THREAD ${BLAS_SEARCH_LIBS_WIN_THREAD})
list(APPEND BLAS_SEARCH_LIBS
"${MAIN} ${THREAD} mkl_core${BLAS_mkl_DLL_SUFFIX}")
endforeach()
endforeach()
else()
if(BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
# old version
list(APPEND BLAS_SEARCH_LIBS
"mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
# mkl >= 10.3
list(APPEND BLAS_SEARCH_LIBS
"${BLAS_mkl_START_GROUP} mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_END_GROUP} ${BLAS_mkl_OMP}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
# old version
list(APPEND BLAS_SEARCH_LIBS
"mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
# mkl >= 10.3
list(APPEND BLAS_SEARCH_LIBS
"${BLAS_mkl_START_GROUP} mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_END_GROUP} ${BLAS_mkl_OMP}")
endif()
if(BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS
"${BLAS_mkl_START_GROUP} mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core ${BLAS_mkl_END_GROUP}")
endif()
#older versions of intel mkl libs
if(BLA_VENDOR STREQUAL "Intel" OR BLA_VENDOR STREQUAL "All")
list(APPEND BLAS_SEARCH_LIBS
"mkl")
list(APPEND BLAS_SEARCH_LIBS
"mkl_ia32")
list(APPEND BLAS_SEARCH_LIBS
"mkl_em64t")
endif()
endif()
endif()
if(BLA_VENDOR MATCHES "^Intel10_64_dyn$" OR BLA_VENDOR STREQUAL "All")
# mkl >= 10.3 with single dynamic library
list(APPEND BLAS_SEARCH_LIBS
"mkl_rt")
endif()
# MKL uses a multitude of partially platform-specific subdirectories:
if(BLA_VENDOR STREQUAL "Intel10_32")
set(BLAS_mkl_ARCH_NAME "ia32")
else()
set(BLAS_mkl_ARCH_NAME "intel64")
endif()
if(WIN32)
set(BLAS_mkl_OS_NAME "win")
elseif(APPLE)
set(BLAS_mkl_OS_NAME "mac")
else()
set(BLAS_mkl_OS_NAME "lin")
endif()
if(DEFINED ENV{MKLROOT})
file(TO_CMAKE_PATH "$ENV{MKLROOT}" BLAS_mkl_MKLROOT)
# If MKLROOT points to the subdirectory 'mkl', use the parent directory instead
# so we can better detect other relevant libraries in 'compiler' or 'tbb':
get_filename_component(BLAS_mkl_MKLROOT_LAST_DIR "${BLAS_mkl_MKLROOT}" NAME)
if(BLAS_mkl_MKLROOT_LAST_DIR STREQUAL "mkl")
get_filename_component(BLAS_mkl_MKLROOT "${BLAS_mkl_MKLROOT}" DIRECTORY)
endif()
endif()
set(BLAS_mkl_LIB_PATH_SUFFIXES
"compiler/lib" "compiler/lib/${BLAS_mkl_ARCH_NAME}_${BLAS_mkl_OS_NAME}"
"compiler/lib/${BLAS_mkl_ARCH_NAME}"
"mkl/lib" "mkl/lib/${BLAS_mkl_ARCH_NAME}_${BLAS_mkl_OS_NAME}"
"mkl/lib/${BLAS_mkl_ARCH_NAME}"
"lib" "lib/${BLAS_mkl_ARCH_NAME}_${BLAS_mkl_OS_NAME}"
"lib/${BLAS_mkl_ARCH_NAME}"
)
foreach(_search ${BLAS_SEARCH_LIBS})
string(REPLACE " " ";" _search ${_search})
if(NOT ${_BLAS_LIBRARIES})
check_blas_libraries(
${_BLAS_LIBRARIES}
BLAS
${BLAS_mkl_SEARCH_SYMBOL}
""
"${_search}"
"${CMAKE_THREAD_LIBS_INIT};${BLAS_mkl_LM};${BLAS_mkl_LDL}"
"${BLAS_mkl_MKLROOT}"
"${BLAS_mkl_LIB_PATH_SUFFIXES}"
)
endif()
endforeach()
unset(_search)
unset(BLAS_mkl_ILP_MODE)
unset(BLAS_mkl_INTFACE)
unset(BLAS_mkl_THREADING)
unset(BLAS_mkl_OMP)
unset(BLAS_mkl_DLL_SUFFIX)
unset(BLAS_mkl_LM)
unset(BLAS_mkl_LDL)
unset(BLAS_mkl_MKLROOT)
unset(BLAS_mkl_MKLROOT_LAST_DIR)
unset(BLAS_mkl_ARCH_NAME)
unset(BLAS_mkl_OS_NAME)
unset(BLAS_mkl_LIB_PATH_SUFFIXES)
endif()
endif()
endif()
if(BLA_F95)
find_package_handle_standard_args(BLAS REQUIRED_VARS BLAS95_LIBRARIES)
set(BLAS95_FOUND ${BLAS_FOUND})
if(BLAS_FOUND)
set(BLAS_LIBRARIES "${BLAS95_LIBRARIES}")
endif()
endif()
# gotoblas? (http://www.tacc.utexas.edu/tacc-projects/gotoblas2)
if(BLA_VENDOR STREQUAL "Goto" OR BLA_VENDOR STREQUAL "All")
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"goto2"
""
""
""
)
endif()
endif()
# FlexiBLAS? (http://www.mpi-magdeburg.mpg.de/mpcsc/software/FlexiBLAS/)
if(BLA_VENDOR STREQUAL "FlexiBLAS" OR BLA_VENDOR STREQUAL "All")
set(_blas_flexiblas_lib "flexiblas")
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_flexiblas_lib "64")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_flexiblas_lib}"
""
""
""
)
endif()
unset(_blas_flexiblas_lib)
endif()
# OpenBLAS? (http://www.openblas.net)
if(BLA_VENDOR STREQUAL "OpenBLAS" OR BLA_VENDOR STREQUAL "All")
set(_blas_openblas_lib "openblas")
if(_blas_sizeof_integer EQUAL 8)
if(MINGW)
string(APPEND _blas_openblas_lib "_64")
else()
string(APPEND _blas_openblas_lib "64")
endif()
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_openblas_lib}"
""
""
""
)
endif()
if(NOT BLAS_LIBRARIES AND (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED))
if(BLAS_FIND_QUIETLY OR NOT BLAS_FIND_REQUIRED)
find_package(Threads)
else()
find_package(Threads REQUIRED)
endif()
set(_threadlibs "${CMAKE_THREAD_LIBS_INIT}")
if(BLA_STATIC)
if (CMAKE_C_COMPILER_LOADED)
find_package(OpenMP QUIET COMPONENTS C)
list(PREPEND _threadlibs "${OpenMP_C_LIBRARIES}")
elseif(CMAKE_CXX_COMPILER_LOADED)
find_package(OpenMP QUIET COMPONENTS CXX)
list(PREPEND _threadlibs "${OpenMP_CXX_LIBRARIES}")
endif()
endif()
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_openblas_lib}"
"${_threadlibs}"
""
""
)
unset(_threadlibs)
endif()
unset(_blas_openblas_lib)
endif()
# ArmPL blas library? (https://developer.arm.com/tools-and-software/server-and-hpc/compile/arm-compiler-for-linux/arm-performance-libraries)
if(BLA_VENDOR MATCHES "Arm" OR BLA_VENDOR STREQUAL "All")
# Check for 64bit Integer support
if(_blas_sizeof_integer EQUAL 8)
set(_blas_armpl_lib "armpl_ilp64")
elseif(_blas_sizeof_integer EQUAL 4)
set(_blas_armpl_lib "armpl_lp64")
else()
if(BLA_VENDOR MATCHES "_ilp64")
set(_blas_armpl_lib "armpl_ilp64")
else()
set(_blas_armpl_lib "armpl_lp64")
endif()
endif()
# Check for OpenMP support, VIA BLA_VENDOR of Arm_mp or Arm_ipl64_mp
if(BLA_VENDOR MATCHES "_mp")
string(APPEND _blas_armpl_lib "_mp")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_armpl_lib}"
""
""
""
)
endif()
unset(_blas_armpl_lib)
endif()
# FLAME's blis library? (https://github.com/flame/blis)
if(BLA_VENDOR STREQUAL "FLAME" OR BLA_VENDOR STREQUAL "All")
set(_blas_flame_lib "blis")
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_flame_lib "64")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_flame_lib}"
""
""
""
)
endif()
unset(_blas_flame_lib)
endif()
# AOCL's blis library? (https://developer.amd.com/amd-aocl/)
if(BLA_VENDOR MATCHES "AOCL" OR BLA_VENDOR STREQUAL "All")
set(_blas_aocl_lib "blis")
if(_blas_sizeof_integer EQUAL 8)
set(_blas_aocl_subdir "ILP64")
else()
set(_blas_aocl_subdir "LP64")
endif()
# Check for multi-threaded support
if(BLA_VENDOR MATCHES "_mt")
string(APPEND _blas_aocl_lib "-mt")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_aocl_lib}"
""
""
"${_blas_aocl_subdir}"
)
endif()
unset(_blas_aocl_lib)
unset(_blas_aocl_subdir)
endif()
# BLAS in the ATLAS library? (http://math-atlas.sourceforge.net/)
if(BLA_VENDOR STREQUAL "ATLAS" OR BLA_VENDOR STREQUAL "All")
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
dgemm
""
"blas;f77blas;atlas"
""
""
""
)
endif()
endif()
# BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
if(BLA_VENDOR STREQUAL "PhiPACK" OR BLA_VENDOR STREQUAL "All")
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"sgemm;dgemm;blas"
""
""
""
)
endif()
endif()
# BLAS in Alpha CXML library?
if(BLA_VENDOR STREQUAL "CXML" OR BLA_VENDOR STREQUAL "All")
if(_blas_sizeof_integer EQUAL 8)
if(BLA_VENDOR STREQUAL "CXML")
message(FATAL_ERROR "CXML does not support Int64 type")
endif()
else()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"cxml"
""
""
""
)
endif()
endif()
endif()
# BLAS in Alpha DXML library? (now called CXML, see above)
if(BLA_VENDOR STREQUAL "DXML" OR BLA_VENDOR STREQUAL "All")
if(_blas_sizeof_integer EQUAL 8)
if(BLA_VENDOR STREQUAL "DXML")
message(FATAL_ERROR "DXML does not support Int64 type")
endif()
else()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"dxml"
""
""
""
)
endif()
endif()
endif()
# BLAS in Sun Performance library?
if(BLA_VENDOR STREQUAL "SunPerf" OR BLA_VENDOR STREQUAL "All")
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
"-xlic_lib=sunperf"
"sunperf;sunmath"
""
""
""
)
if(BLAS_LIBRARIES)
set(BLAS_LINKER_FLAGS "-xlic_lib=sunperf")
endif()
endif()
endif()
# BLAS in SCSL library? (SGI/Cray Scientific Library)
if(BLA_VENDOR MATCHES "SCSL" OR BLA_VENDOR STREQUAL "All")
set(_blas_scsl_lib "scs")
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_scsl_lib "_i8")
endif()
if(BLA_VENDOR MATCHES "_mp")
string(APPEND _blas_scsl_lib "_mp")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_scsl_lib}"
""
""
""
)
endif()
unset(_blas_scsl_lib)
endif()
# BLAS in SGIMATH library?
if(BLA_VENDOR STREQUAL "SGIMATH" OR BLA_VENDOR STREQUAL "All")
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"complib.sgimath"
""
""
""
)
endif()
endif()
# BLAS in IBM ESSL library?
if(BLA_VENDOR MATCHES "IBMESSL" OR BLA_VENDOR STREQUAL "All")
set(_blas_essl_lib "essl")
if(BLA_VENDOR MATCHES "_SMP")
string(APPEND _blas_essl_lib "smp")
endif()
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_essl_lib "6464")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_essl_lib}"
""
""
""
)
endif()
unset(_blas_essl_lib)
endif()
# BLAS in acml library?
if(BLA_VENDOR MATCHES "ACML" OR BLA_VENDOR STREQUAL "All")
if(((BLA_VENDOR STREQUAL "ACML") AND (NOT BLAS_ACML_LIB_DIRS)) OR
((BLA_VENDOR STREQUAL "ACML_MP") AND (NOT BLAS_ACML_MP_LIB_DIRS)) OR
((BLA_VENDOR STREQUAL "ACML_GPU") AND (NOT BLAS_ACML_GPU_LIB_DIRS))
)
# try to find acml in "standard" paths
if(WIN32)
file(GLOB _ACML_ROOT "C:/AMD/acml*/ACML-EULA.txt")
else()
file(GLOB _ACML_ROOT "/opt/acml*/ACML-EULA.txt")
endif()
if(WIN32)
file(GLOB _ACML_GPU_ROOT "C:/AMD/acml*/GPGPUexamples")
else()
file(GLOB _ACML_GPU_ROOT "/opt/acml*/GPGPUexamples")
endif()
list(GET _ACML_ROOT 0 _ACML_ROOT)
list(GET _ACML_GPU_ROOT 0 _ACML_GPU_ROOT)
if(_ACML_ROOT)
get_filename_component(_ACML_ROOT ${_ACML_ROOT} PATH)
if(_blas_sizeof_integer EQUAL 8)
set(_ACML_PATH_SUFFIX "_int64")
else()
set(_ACML_PATH_SUFFIX "")
endif()
if(CMAKE_Fortran_COMPILER_ID STREQUAL "Intel")
set(_ACML_COMPILER32 "ifort32")
set(_ACML_COMPILER64 "ifort64")
elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "IntelLLVM")
# 32-bit not supported
set(_ACML_COMPILER64 "ifx")
elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "SunPro")
set(_ACML_COMPILER32 "sun32")
set(_ACML_COMPILER64 "sun64")
elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "PGI")
set(_ACML_COMPILER32 "pgi32")
if(WIN32)
set(_ACML_COMPILER64 "win64")
else()
set(_ACML_COMPILER64 "pgi64")
endif()
elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "Open64")
# 32 bit builds not supported on Open64 but for code simplicity
# We'll just use the same directory twice
set(_ACML_COMPILER32 "open64_64")
set(_ACML_COMPILER64 "open64_64")
elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "NAG")
set(_ACML_COMPILER32 "nag32")
set(_ACML_COMPILER64 "nag64")
else()
set(_ACML_COMPILER32 "gfortran32")
set(_ACML_COMPILER64 "gfortran64")
endif()
if(BLA_VENDOR STREQUAL "ACML_MP")
set(_ACML_MP_LIB_DIRS
"${_ACML_ROOT}/${_ACML_COMPILER32}_mp${_ACML_PATH_SUFFIX}/lib"
"${_ACML_ROOT}/${_ACML_COMPILER64}_mp${_ACML_PATH_SUFFIX}/lib")
else()
set(_ACML_LIB_DIRS
"${_ACML_ROOT}/${_ACML_COMPILER32}${_ACML_PATH_SUFFIX}/lib"
"${_ACML_ROOT}/${_ACML_COMPILER64}${_ACML_PATH_SUFFIX}/lib")
endif()
endif()
elseif(BLAS_${BLA_VENDOR}_LIB_DIRS)
set(_${BLA_VENDOR}_LIB_DIRS ${BLAS_${BLA_VENDOR}_LIB_DIRS})
endif()
if(BLA_VENDOR STREQUAL "ACML_MP")
foreach(BLAS_ACML_MP_LIB_DIRS ${_ACML_MP_LIB_DIRS})
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
"" "acml_mp;acml_mv" "" ${BLAS_ACML_MP_LIB_DIRS} ""
)
if(BLAS_LIBRARIES)
break()
endif()
endforeach()
elseif(BLA_VENDOR STREQUAL "ACML_GPU")
foreach(BLAS_ACML_GPU_LIB_DIRS ${_ACML_GPU_LIB_DIRS})
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
"" "acml;acml_mv;CALBLAS" "" ${BLAS_ACML_GPU_LIB_DIRS} ""
)
if(BLAS_LIBRARIES)
break()
endif()
endforeach()
else()
foreach(BLAS_ACML_LIB_DIRS ${_ACML_LIB_DIRS})
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
"" "acml;acml_mv" "" ${BLAS_ACML_LIB_DIRS} ""
)
if(BLAS_LIBRARIES)
break()
endif()
endforeach()
endif()
# Either acml or acml_mp should be in LD_LIBRARY_PATH but not both
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"acml;acml_mv"
""
""
""
)
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"acml_mp;acml_mv"
""
""
""
)
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"acml;acml_mv;CALBLAS"
""
""
""
)
endif()
endif() # ACML
# Apple BLAS library?
if(BLA_VENDOR STREQUAL "Apple" OR BLA_VENDOR STREQUAL "All")
if(_blas_sizeof_integer EQUAL 8)
if(BLA_VENDOR STREQUAL "Apple")
message(FATAL_ERROR "Accelerate Framework does not support Int64 type")
endif()
else()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
dgemm
""
"Accelerate"
""
""
""
)
endif()
endif()
endif()
# Apple NAS (vecLib) library?
if(BLA_VENDOR STREQUAL "NAS" OR BLA_VENDOR STREQUAL "All")
if(_blas_sizeof_integer EQUAL 8)
if(BLA_VENDOR STREQUAL "NAS")
message(FATAL_ERROR "Accelerate Framework does not support Int64 type")
endif()
else()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
dgemm
""
"vecLib"
""
""
""
)
endif()
endif()
endif()
# Elbrus Math Library?
if(BLA_VENDOR MATCHES "EML" OR BLA_VENDOR STREQUAL "All")
set(_blas_eml_lib "eml")
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_eml_lib "_ilp64")
endif()
# Check for OpenMP support, VIA BLA_VENDOR of eml_mt
if(BLA_VENDOR MATCHES "_mt")
string(APPEND _blas_eml_lib "_mt")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_eml_lib}"
""
""
""
)
endif()
unset(_blas_eml_lib)
endif()
# Fujitsu SSL2 Library?
if(NOT BLAS_LIBRARIES
AND (BLA_VENDOR MATCHES "^Fujitsu_SSL2" OR BLA_VENDOR STREQUAL "All"))
set(_blas_fjlapack_lib "fjlapack")
set(_blas_fjlapack_flags "-Kopenmp")
if(BLA_VENDOR MATCHES "BLAMP")
string(APPEND _blas_fjlapack_lib "ex")
endif()
if(BLA_VENDOR MATCHES "SVE")
string(APPEND _blas_fjlapack_lib "sve")
endif()
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_fjlapack_lib "_ilp64")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
"${_blas_fjlapack_flags}"
"${_blas_fjlapack_lib}"
""
""
""
)
if(BLAS_LIBRARIES)
set(BLAS_LINKER_FLAGS ${_blas_fjlapack_flags})
endif()
endif()
unset(_blas_fjlapack_flags)
unset(_blas_fjlapack_lib)
endif()
# BLAS in nVidia HPC SDK? (https://developer.nvidia.com/hpc-sdk)
if(BLA_VENDOR STREQUAL "NVHPC" OR BLA_VENDOR STREQUAL "All")
set(_blas_nvhpc_lib "blas")
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_nvhpc_lib "_ilp64")
elseif(_blas_sizeof_integer EQUAL 4)
string(APPEND _blas_nvhpc_lib "_lp64")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_nvhpc_lib}"
""
""
""
)
endif()
# an additional check for NVHPC 2020
# which does not have differentiation
# between lp64 and ilp64 modes
if(NOT BLAS_LIBRARIES AND NOT _blas_sizeof_integer EQUAL 8)
set(_blas_nvhpc_lib "blas")
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_nvhpc_lib}"
""
""
""
)
endif()
unset(_blas_nvhpc_lib)
endif()
# libblastrampoline? (https://github.com/JuliaLinearAlgebra/libblastrampoline/tree/main)
if(BLA_VENDOR STREQUAL "libblastrampoline" OR BLA_VENDOR STREQUAL "All")
set(_blas_libblastrampoline_lib "blastrampoline")
if(WIN32)
# Windows appends the version number to the library
string(APPEND _blas_libblastrampoline_lib "-5")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_libblastrampoline_lib}"
""
""
""
)
endif()
unset(_blas_libblastrampoline_lib)
endif()
# Generic BLAS library?
if(BLA_VENDOR STREQUAL "Generic" OR
BLA_VENDOR STREQUAL "All")
set(_blas_generic_lib "blas")
if(_blas_sizeof_integer EQUAL 8)
string(APPEND _blas_generic_lib "64")
endif()
if(NOT BLAS_LIBRARIES)
check_blas_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"${_blas_generic_lib}"
""
""
""
)
endif()
unset(_blas_generic_lib)
endif()
# On compilers that implicitly link BLAS (i.e. CrayPrgEnv) we used a
# placeholder for empty BLAS_LIBRARIES to get through our logic above.
if(BLAS_LIBRARIES STREQUAL "BLAS_LIBRARIES-PLACEHOLDER-FOR-EMPTY-LIBRARIES")
set(BLAS_LIBRARIES "")
endif()
if(NOT BLA_F95)
find_package_handle_standard_args(BLAS REQUIRED_VARS ${_blas_fphsa_req_var})
endif()
_add_blas_target()
unset(_blas_fphsa_req_var)
unset(_blas_sizeof_integer)
unset(_BLAS_LIBRARIES)
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