FindBLAS.cmake 43.5 KB
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###
#
# @copyright (c) 2009-2014 The University of Tennessee and The University
#                          of Tennessee Research Foundation.
#                          All rights reserved.
# @copyright (c) 2012-2014 Inria. All rights reserved.
# @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
#
###
#
# - Find BLAS library
# This module finds an installed fortran library that implements the BLAS
# linear-algebra interface (see http://www.netlib.org/blas/).
# The list of libraries searched for is taken
# from the autoconf macro file, acx_blas.m4 (distributed at
# http://ac-archive.sourceforge.net/ac-archive/acx_blas.html).
#
# This module sets the following variables:
#  BLAS_FOUND - set to true if a library implementing the BLAS interface
#    is found
#  BLAS_LINKER_FLAGS - uncached list of required linker flags (excluding -l
#    and -L).
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#  BLAS_COMPILER_FLAGS - uncached list of required compiler flags (including -I for mkl headers).
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#  BLAS_LIBRARIES - uncached list of libraries (using full path name) to
#    link against to use BLAS
#  BLAS95_LIBRARIES - uncached list of libraries (using full path name)
#    to link against to use BLAS95 interface
#  BLAS95_FOUND - set to true if a library implementing the BLAS f95 interface
#    is found
#  BLA_STATIC  if set on this determines what kind of linkage we do (static)
#  BLA_VENDOR  if set checks only the specified vendor, if not set checks
#     all the possibilities
#  BLA_F95     if set on tries to find the f95 interfaces for BLAS/LAPACK
# The user can give specific paths where to find the libraries adding cmake
# options at configure (ex: cmake path/to/project -DBLAS_DIR=path/to/blas):
#  BLAS_DIR            - Where to find the base directory of blas
#  BLAS_INCDIR         - Where to find the header files
#  BLAS_LIBDIR         - Where to find the library files
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# The module can also look for the following environment variables if paths
# are not given as cmake variable: BLAS_DIR, BLAS_INCDIR, BLAS_LIBDIR
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# For MKL case and if no paths are given as hints, we will try to use the MKLROOT
# environment variable
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##########
### List of vendors (BLA_VENDOR) valid in this module
########## List of vendors (BLA_VENDOR) valid in this module
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##  Open (for OpenBlas), Eigen (for EigenBlas), Goto, ATLAS PhiPACK,
##  CXML, DXML, SunPerf, SCSL, SGIMATH, IBMESSL,
##  Intel10_32 (intel mkl v10 32 bit), Intel10_64lp (intel mkl v10 64 bit,lp thread model, lp64 model),
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##  Intel10_64lp_seq (intel mkl v10 64 bit,sequential code, lp64 model),
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##  Intel( older versions of mkl 32 and 64 bit),
##  ACML, ACML_MP, ACML_GPU, Apple, NAS, Generic
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# C/CXX should be enabled to use Intel mkl
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###
# We handle different modes to find the dependency
#
# - Detection if already installed on the system
#   - BLAS libraries can be detected from different ways
#     Here is the order of precedence:
#     1) we look in cmake variable BLAS_LIBDIR or BLAS_DIR (we guess the libdirs) if defined
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#     2) we look in environment variable BLAS_LIBDIR or BLAS_DIR (we guess the libdirs) if defined
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#     3) we look in common environnment variables depending on the system (INCLUDE, C_INCLUDE_PATH, CPATH - LIB, DYLD_LIBRARY_PATH, LD_LIBRARY_PATH)
#     4) we look in common system paths depending on the system, see for example paths contained in the following cmake variables:
#       - CMAKE_PLATFORM_IMPLICIT_INCLUDE_DIRECTORIES, CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES
#       - CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES, CMAKE_C_IMPLICIT_LINK_DIRECTORIES
#
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#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
#  License text for the above reference.)


# Set some colors
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#if(NOT WIN32)
#    string(ASCII 27 Esc)
#    set(ColourReset "${Esc}[m")
#    set(ColourBold  "${Esc}[1m")
#    set(Red         "${Esc}[31m")
#    set(Green       "${Esc}[32m")
#    set(Yellow      "${Esc}[33m")
#    set(Blue        "${Esc}[34m")
#    set(Magenta     "${Esc}[35m")
#    set(Cyan        "${Esc}[36m")
#    set(White       "${Esc}[37m")
#    set(BoldRed     "${Esc}[1;31m")
#    set(BoldGreen   "${Esc}[1;32m")
#    set(BoldYellow  "${Esc}[1;33m")
#    set(BoldBlue    "${Esc}[1;34m")
#    set(BoldMagenta "${Esc}[1;35m")
#    set(BoldCyan    "${Esc}[1;36m")
#    set(BoldWhite   "${Esc}[1;37m")
#endif()
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## Some macros to print status when search for headers and libs
# This macro informs why the _lib_to_find file has not been found
macro(Print_Find_Library_Blas_Status _libname _lib_to_find)

    # save _libname upper/lower case
    string(TOUPPER ${_libname} LIBNAME)
    string(TOLOWER ${_libname} libname)

    # print status
    #message(" ")
    if(${LIBNAME}_LIBDIR)
        message("${Yellow}${LIBNAME}_LIBDIR is defined but ${_lib_to_find}"
                "has not been found in ${ARGN}${ColourReset}")
    else()
        if(${LIBNAME}_DIR)
            message("${Yellow}${LIBNAME}_DIR is defined but ${_lib_to_find}"
                    "has not been found in ${ARGN}${ColourReset}")
        else()
            message("${Yellow}${_lib_to_find} not found."
                    "Nor ${LIBNAME}_DIR neither ${LIBNAME}_LIBDIR"
                    "are defined so that we look for ${_lib_to_find} in"
                    "system paths (Linux: LD_LIBRARY_PATH, Windows: LIB,"
                    "Mac: DYLD_LIBRARY_PATH,"
                    "CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES,"
                    "CMAKE_C_IMPLICIT_LINK_DIRECTORIES)${ColourReset}")
            if(_lib_env)
                message("${Yellow}${_lib_to_find} has not been found in"
                        "${_lib_env}${ColourReset}")
            endif()
        endif()
    endif()
    message("${BoldYellow}Please indicate where to find ${_lib_to_find}. You have three options:\n"
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            "- Option 1: Provide the Installation directory of BLAS library with cmake option: -D${LIBNAME}_DIR=your/path/to/${libname}/\n"
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            "- Option 2: Provide the directory where to find the library with cmake option: -D${LIBNAME}_LIBDIR=your/path/to/${libname}/lib/\n"
            "- Option 3: Update your environment variable (Linux: LD_LIBRARY_PATH, Windows: LIB, Mac: DYLD_LIBRARY_PATH)\n"
            "- Option 4: If your library provides a PkgConfig file, make sure pkg-config finds your library${ColourReset}")

endmacro()

# This macro informs why the _lib_to_find file has not been found
macro(Print_Find_Library_Blas_CheckFunc_Status _name)

    # save _libname upper/lower case
    string(TOUPPER ${_name} FUNCNAME)
    string(TOLOWER ${_name} funcname)

    # print status
    #message(" ")
    message("${Red}Libs have been found but check of symbol ${_name} failed "
            "with following libraries ${ARGN}${ColourReset}")
    message("${BoldRed}Please open your error file CMakeFiles/CMakeError.log"
            "to figure out why it fails${ColourReset}")
    #message(" ")

endmacro()

if (NOT BLAS_FOUND)
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    set(BLAS_DIR "" CACHE PATH "Installation directory of BLAS library")
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    if (NOT BLAS_FIND_QUIETLY)
        message(STATUS "A cache variable, namely BLAS_DIR, has been set to specify the install directory of BLAS")
    endif()
endif()

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option(BLAS_VERBOSE "Print some additional information during BLAS libraries detection" OFF)
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include(CheckFunctionExists)
include(CheckFortranFunctionExists)

set(_blas_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})

# Check the language being used
get_property( _LANGUAGES_ GLOBAL PROPERTY ENABLED_LANGUAGES )
if( _LANGUAGES_ MATCHES Fortran )
    set( _CHECK_FORTRAN TRUE )
elseif( (_LANGUAGES_ MATCHES C) OR (_LANGUAGES_ MATCHES CXX) )
    set( _CHECK_FORTRAN FALSE )
else()
    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()

macro(Check_Fortran_Libraries LIBRARIES _prefix _name _flags _list _thread)
# This macro checks for the existence of the combination of fortran libraries
# given by _list.  If the combination is found, this macro checks (using the
# Check_Fortran_Function_Exists macro) 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.

# N.B. _prefix is the prefix applied to the names of all cached variables that
# are generated internally and marked advanced by this macro.

    set(_libdir ${ARGN})

    set(_libraries_work TRUE)
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    set(${LIBRARIES})
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    set(_combined_name)
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    set(ENV_MKLROOT "$ENV{MKLROOT}")
    set(ENV_BLAS_DIR "$ENV{BLAS_DIR}")
    set(ENV_BLAS_LIBDIR "$ENV{BLAS_LIBDIR}")
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    if (NOT _libdir)
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        if (BLAS_LIBDIR)
            list(APPEND _libdir "${BLAS_LIBDIR}")
        elseif (BLAS_DIR)
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            list(APPEND _libdir "${BLAS_DIR}")
            list(APPEND _libdir "${BLAS_DIR}/lib")
            if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
                list(APPEND _libdir "${BLAS_DIR}/lib64")
                list(APPEND _libdir "${BLAS_DIR}/lib/intel64")
            else()
                list(APPEND _libdir "${BLAS_DIR}/lib32")
                list(APPEND _libdir "${BLAS_DIR}/lib/ia32")
            endif()
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        elseif(ENV_BLAS_LIBDIR)
            list(APPEND _libdir "${ENV_BLAS_LIBDIR}")
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        elseif(ENV_BLAS_DIR)
            list(APPEND _libdir "${ENV_BLAS_DIR}")
            list(APPEND _libdir "${ENV_BLAS_DIR}/lib")
            if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
                list(APPEND _libdir "${ENV_BLAS_DIR}/lib64")
                list(APPEND _libdir "${ENV_BLAS_DIR}/lib/intel64")
            else()
                list(APPEND _libdir "${ENV_BLAS_DIR}/lib32")
                list(APPEND _libdir "${ENV_BLAS_DIR}/lib/ia32")
            endif()
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        else()
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            if (ENV_MKLROOT)
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                list(APPEND _libdir "${ENV_MKLROOT}/lib")
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                if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
                    list(APPEND _libdir "${ENV_MKLROOT}/lib64")
                    list(APPEND _libdir "${ENV_MKLROOT}/lib/intel64")
                else()
                    list(APPEND _libdir "${ENV_MKLROOT}/lib32")
                    list(APPEND _libdir "${ENV_MKLROOT}/lib/ia32")
                endif()
            endif()
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            if (WIN32)
                string(REPLACE ":" ";" _libdir2 "$ENV{LIB}")
            elseif (APPLE)
                string(REPLACE ":" ";" _libdir2 "$ENV{DYLD_LIBRARY_PATH}")
            else ()
                string(REPLACE ":" ";" _libdir2 "$ENV{LD_LIBRARY_PATH}")
            endif ()
            list(APPEND _libdir "${_libdir2}")
            list(APPEND _libdir "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}")
            list(APPEND _libdir "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}")
        endif()
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    endif ()

    if (BLAS_VERBOSE)
        message("${Cyan}Try to find BLAS libraries: ${_list}")
    endif ()

    foreach(_library ${_list})
        set(_combined_name ${_combined_name}_${_library})

        if(_libraries_work)
            if (BLA_STATIC)
                if (WIN32)
                    set(CMAKE_FIND_LIBRARY_SUFFIXES .lib ${CMAKE_FIND_LIBRARY_SUFFIXES})
                endif ()
                if (APPLE)
                    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 ${CMAKE_FIND_LIBRARY_SUFFIXES} .so.3gf)
                endif ()
            endif ()
            find_library(${_prefix}_${_library}_LIBRARY
                NAMES ${_library}
                HINTS ${_libdir}
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                NO_DEFAULT_PATH
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              )
            mark_as_advanced(${_prefix}_${_library}_LIBRARY)
            # Print status if not found
            # -------------------------
            if (NOT ${_prefix}_${_library}_LIBRARY AND NOT BLAS_FIND_QUIETLY AND BLAS_VERBOSE)
                Print_Find_Library_Blas_Status(blas ${_library} ${_libdir})
            endif ()
            set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
            set(_libraries_work ${${_prefix}_${_library}_LIBRARY})
        endif(_libraries_work)
    endforeach(_library ${_list})

    if(_libraries_work)
        # Test this combination of libraries.
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        if (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND BLA_STATIC)
            list(INSERT ${LIBRARIES} 0 "-Wl,--start-group")
            list(APPEND ${LIBRARIES} "-Wl,--end-group")
        endif()
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        set(CMAKE_REQUIRED_LIBRARIES "${_flags};${${LIBRARIES}};${_thread}")
        set(CMAKE_REQUIRED_FLAGS "${BLAS_COMPILER_FLAGS}")
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        if (BLAS_VERBOSE)
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            message("${Cyan}BLAS libs found for BLA_VENDOR ${BLA_VENDOR}."
                    "Try to compile symbol ${_name} with following libraries:"
                    "${CMAKE_REQUIRED_LIBRARIES}")
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        endif ()
        if(NOT BLAS_FOUND)
            unset(${_prefix}${_combined_name}_WORKS CACHE)
        endif()
        if (_CHECK_FORTRAN)
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            if (CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
                string(REPLACE "mkl_intel_lp64" "mkl_gf_lp64" CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
                string(REPLACE "mkl_intel_ilp64" "mkl_gf_ilp64" CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
            endif()
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            check_fortran_function_exists("${_name}" ${_prefix}${_combined_name}_WORKS)
        else()
            check_function_exists("${_name}_" ${_prefix}${_combined_name}_WORKS)
        endif()
        mark_as_advanced(${_prefix}${_combined_name}_WORKS)
        set(_libraries_work ${${_prefix}${_combined_name}_WORKS})
        # Print status if not found
        # -------------------------
        if (NOT _libraries_work AND NOT BLAS_FIND_QUIETLY AND BLAS_VERBOSE)
            Print_Find_Library_Blas_CheckFunc_Status(${_name} ${CMAKE_REQUIRED_LIBRARIES})
        endif ()
        set(CMAKE_REQUIRED_LIBRARIES)
    endif()

    if(_libraries_work)
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      set(${LIBRARIES} ${${LIBRARIES}} ${_thread})
    else(_libraries_work)
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        set(${LIBRARIES} FALSE)
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    endif(_libraries_work)
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# message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")

endmacro(Check_Fortran_Libraries)


set(BLAS_LINKER_FLAGS)
set(BLAS_LIBRARIES)
set(BLAS95_LIBRARIES)
if ($ENV{BLA_VENDOR} MATCHES ".+")
    set(BLA_VENDOR $ENV{BLA_VENDOR})
else ()
    if(NOT BLA_VENDOR)
        set(BLA_VENDOR "All")
    endif()
endif ()

#BLAS in intel mkl 10 library? (em64t 64bit)
if (BLA_VENDOR MATCHES "Intel*" OR BLA_VENDOR STREQUAL "All")

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    # Looking for include
    # -------------------

    # Add system include paths to search include
    # ------------------------------------------
    unset(_inc_env)
    set(ENV_MKLROOT "$ENV{MKLROOT}")
    set(ENV_BLAS_DIR "$ENV{BLAS_DIR}")
    set(ENV_BLAS_INCDIR "$ENV{BLAS_INCDIR}")
    if(ENV_BLAS_INCDIR)
        list(APPEND _inc_env "${ENV_BLAS_INCDIR}")
    elseif(ENV_BLAS_DIR)
        list(APPEND _inc_env "${ENV_BLAS_DIR}")
        list(APPEND _inc_env "${ENV_BLAS_DIR}/include")
    else()
        if (ENV_MKLROOT)
            list(APPEND _inc_env "${ENV_MKLROOT}/include")
        endif()
        # system variables
        if(WIN32)
            string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}")
            list(APPEND _inc_env "${_path_env}")
        else()
            string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}")
            list(APPEND _inc_env "${_path_env}")
            string(REPLACE ":" ";" _path_env "$ENV{C_INCLUDE_PATH}")
            list(APPEND _inc_env "${_path_env}")
            string(REPLACE ":" ";" _path_env "$ENV{CPATH}")
            list(APPEND _inc_env "${_path_env}")
            string(REPLACE ":" ";" _path_env "$ENV{INCLUDE_PATH}")
            list(APPEND _inc_env "${_path_env}")
        endif()
    endif()
    list(APPEND _inc_env "${CMAKE_PLATFORM_IMPLICIT_INCLUDE_DIRECTORIES}")
    list(APPEND _inc_env "${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}")
    list(REMOVE_DUPLICATES _inc_env)

    # set paths where to look for
    set(PATH_TO_LOOK_FOR "${_inc_env}")

    # Try to find the fftw header in the given paths
    # -------------------------------------------------
    # call cmake macro to find the header path
    if(BLAS_INCDIR)
        set(BLAS_mkl.h_DIRS "BLAS_mkl.h_DIRS-NOTFOUND")
        find_path(BLAS_mkl.h_DIRS
          NAMES mkl.h
          HINTS ${BLAS_INCDIR})
    else()
        if(BLAS_DIR)
            set(BLAS_mkl.h_DIRS "BLAS_mkl.h_DIRS-NOTFOUND")
            find_path(BLAS_mkl.h_DIRS
              NAMES mkl.h
              HINTS ${BLAS_DIR}
              PATH_SUFFIXES "include")
        else()
            set(BLAS_mkl.h_DIRS "BLAS_mkl.h_DIRS-NOTFOUND")
            find_path(BLAS_mkl.h_DIRS
                      NAMES mkl.h
                      HINTS ${PATH_TO_LOOK_FOR})
        endif()
    endif()
    mark_as_advanced(BLAS_mkl.h_DIRS)

    # If found, add path to cmake variable
    # ------------------------------------
    if (BLAS_mkl.h_DIRS)
        set(BLAS_INCLUDE_DIRS "${BLAS_mkl.h_DIRS}")
    else ()
        set(BLAS_INCLUDE_DIRS "BLAS_INCLUDE_DIRS-NOTFOUND")
        if(NOT BLAS_FIND_QUIETLY)
            message(STATUS "Looking for BLAS -- mkl.h not found")
        endif()
    endif()

    if (WIN32)
        string(REPLACE ":" ";" _libdir "$ENV{LIB}")
    elseif (APPLE)
        string(REPLACE ":" ";" _libdir "$ENV{DYLD_LIBRARY_PATH}")
    else ()
        string(REPLACE ":" ";" _libdir "$ENV{LD_LIBRARY_PATH}")
    endif ()
    list(APPEND _libdir "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}")
    list(APPEND _libdir "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}")
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    # libiomp5
    # --------
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    set(OMP_iomp5_LIBRARY "OMP_iomp5_LIBRARY-NOTFOUND")
    find_library(OMP_iomp5_LIBRARY
        NAMES iomp5
        HINTS ${_libdir}
      )
    mark_as_advanced(OMP_iomp5_LIBRARY)
    set(OMP_LIB "")
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    # libgomp
    # -------
    set(OMP_gomp_LIBRARY "OMP_gomp_LIBRARY-NOTFOUND")
    find_library(OMP_gomp_LIBRARY
        NAMES gomp
        HINTS ${_libdir}
      )
    mark_as_advanced(OMP_gomp_LIBRARY)
    # choose one or another depending on the compilo
    if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
        if (OMP_gomp_LIBRARY)
            set(OMP_LIB "${OMP_gomp_LIBRARY}")
        endif()
    else(CMAKE_C_COMPILER_ID STREQUAL "Intel")
        if (OMP_iomp5_LIBRARY)
            set(OMP_LIB "${OMP_iomp5_LIBRARY}")
        endif()
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    endif()

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    if (UNIX AND NOT WIN32)
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        # m
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        find_library(M_LIBRARY
            NAMES m
            HINTS ${_libdir})
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        if(M_LIBRARY)
            set(LM "-lm")
        else()
            set(LM "")
        endif()
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        # Fortran
        set(LGFORTRAN "")
        if (CMAKE_C_COMPILER_ID MATCHES "GNU")
            find_library(
                FORTRAN_gfortran_LIBRARY
                NAMES gfortran
                HINTS ${_libdir}
                )
            mark_as_advanced(FORTRAN_gfortran_LIBRARY)
            if (FORTRAN_gfortran_LIBRARY)
                set(LGFORTRAN "${FORTRAN_gfortran_LIBRARY}")
            endif()
        elseif (CMAKE_C_COMPILER_ID MATCHES "Intel")
            find_library(
                FORTRAN_ifcore_LIBRARY
                NAMES ifcore
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                HINTS ${_libdir}
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                )
            mark_as_advanced(FORTRAN_ifcore_LIBRARY)
            if (FORTRAN_ifcore_LIBRARY)
                set(LGFORTRAN "{FORTRAN_ifcore_LIBRARY}")
            endif()
        endif()
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        set(BLAS_COMPILER_FLAGS "")
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        if (NOT BLA_VENDOR STREQUAL "Intel10_64lp_seq")
            if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
                list(APPEND BLAS_COMPILER_FLAGS "-openmp")
            endif()
            if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
                list(APPEND BLAS_COMPILER_FLAGS "-fopenmp")
            endif()
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        endif()
        if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
            if (BLA_VENDOR STREQUAL "Intel10_32")
                #list(APPEND BLAS_COMPILER_FLAGS "-m32")
            else()
                #list(APPEND BLAS_COMPILER_FLAGS "-m64")
            endif()
            if (NOT BLA_VENDOR STREQUAL "Intel10_64lp_seq")
                list(APPEND OMP_LIB "-ldl")
            endif()
        endif()

        set(additional_flags "")
        if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
            set(additional_flags "-Wl,--no-as-needed")
        endif()
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    endif ()
525

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    if (_LANGUAGES_ MATCHES C OR _LANGUAGES_ MATCHES CXX)
        if(BLAS_FIND_QUIETLY OR NOT BLAS_FIND_REQUIRED)
            find_package(Threads)
        else()
            find_package(Threads REQUIRED)
        endif()

        set(BLAS_SEARCH_LIBS "")

        if(BLA_F95)

            set(BLAS_mkl_SEARCH_SYMBOL SGEMM)
            set(_LIBRARIES BLAS95_LIBRARIES)
            if (WIN32)
                if (BLA_STATIC)
                    set(BLAS_mkl_DLL_SUFFIX "")
                else()
                    set(BLAS_mkl_DLL_SUFFIX "_dll")
                endif()

                # 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 STREQUAL "Intel10_64lp*" OR BLA_VENDOR STREQUAL "All")
                    list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
                    "mkl_blas95_lp64${BLAS_mkl_DLL_SUFFIX} mkl_intel_lp64${BLAS_mkl_DLL_SUFFIX}")
                endif ()

                # Add threading/sequential libs
                set(BLAS_SEARCH_LIBS_WIN_THREAD "")
                if (BLA_VENDOR STREQUAL "*_seq" OR BLA_VENDOR STREQUAL "All")
                    list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
                    "mkl_sequential${BLAS_mkl_DLL_SUFFIX}")
                endif()
                if (NOT BLA_VENDOR STREQUAL "*_seq" OR BLA_VENDOR STREQUAL "All")
                    # old version
                    list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
                    "libguide40 mkl_intel_thread${BLAS_mkl_DLL_SUFFIX}")
                    # mkl >= 10.3
                    list(APPEND BLAS_SEARCH_LIBS_WIN_THREAD
                    "libiomp5md mkl_intel_thread${BLAS_mkl_DLL_SUFFIX}")
                endif()

                # 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 (WIN32)
                if (BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
                    list(APPEND BLAS_SEARCH_LIBS
                    "mkl_blas95 mkl_intel mkl_intel_thread mkl_core guide")
                endif ()
                if (BLA_VENDOR STREQUAL "Intel10_64lp" OR BLA_VENDOR STREQUAL "All")
                    # old version
                    list(APPEND BLAS_SEARCH_LIBS
                    "mkl_blas95 mkl_intel_lp64 mkl_intel_thread mkl_core guide")
                    # mkl >= 10.3
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                    if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
                        list(APPEND BLAS_SEARCH_LIBS
                        "mkl_blas95_lp64 mkl_intel_lp64 mkl_intel_thread mkl_core")
                    endif()
                    if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
                        list(APPEND BLAS_SEARCH_LIBS
                        "mkl_blas95_lp64 mkl_intel_lp64 mkl_gnu_thread mkl_core")
                    endif()
597 598 599 600
                endif ()
                if (BLA_VENDOR STREQUAL "Intel10_64lp_seq" OR BLA_VENDOR STREQUAL "All")
                    list(APPEND BLAS_SEARCH_LIBS
                    "mkl_intel_lp64 mkl_sequential mkl_core")
601 602 603
                    if (BLA_VENDOR STREQUAL "Intel10_64lp_seq")
                        set(OMP_LIB "")
                    endif()
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                endif ()
            endif (WIN32)

        else (BLA_F95)

            set(BLAS_mkl_SEARCH_SYMBOL sgemm)
            set(_LIBRARIES BLAS_LIBRARIES)
            if (WIN32)
                if (BLA_STATIC)
                    set(BLAS_mkl_DLL_SUFFIX "")
                else()
                    set(BLAS_mkl_DLL_SUFFIX "_dll")
                endif()

                # 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${BLAS_mkl_DLL_SUFFIX}")
                endif()
                if (BLA_VENDOR STREQUAL "Intel10_64lp*" OR BLA_VENDOR STREQUAL "All")
                    list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
                    "mkl_intel_lp64${BLAS_mkl_DLL_SUFFIX}")
                endif ()

                # Add threading/sequential libs
                set(BLAS_SEARCH_LIBS_WIN_THREAD "")
                if (NOT BLA_VENDOR STREQUAL "*_seq" 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 STREQUAL "*_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 (WIN32)
                if (BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
                    list(APPEND BLAS_SEARCH_LIBS
                    "mkl_intel mkl_intel_thread mkl_core guide")
                endif ()
                if (BLA_VENDOR STREQUAL "Intel10_64lp" OR BLA_VENDOR STREQUAL "All")
                    # old version
                    list(APPEND BLAS_SEARCH_LIBS
                    "mkl_intel_lp64 mkl_intel_thread mkl_core guide")
                    # mkl >= 10.3
661 662 663 664 665 666 667 668
                    if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
                        list(APPEND BLAS_SEARCH_LIBS
                        "mkl_intel_lp64 mkl_intel_thread mkl_core")
                    endif()
                    if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
                        list(APPEND BLAS_SEARCH_LIBS
                        "mkl_intel_lp64 mkl_gnu_thread mkl_core")
                    endif()
669 670 671 672
                endif ()
                if (BLA_VENDOR STREQUAL "Intel10_64lp_seq" OR BLA_VENDOR STREQUAL "All")
                    list(APPEND BLAS_SEARCH_LIBS
                    "mkl_intel_lp64 mkl_sequential mkl_core")
673 674 675
                    if (BLA_VENDOR STREQUAL "Intel10_64lp_seq")
                        set(OMP_LIB "")
                    endif()
676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699
                endif ()
                #older vesions 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 (WIN32)

        endif (BLA_F95)

        foreach (IT ${BLAS_SEARCH_LIBS})
            string(REPLACE " " ";" SEARCH_LIBS ${IT})
            if (${_LIBRARIES})
            else ()
                check_fortran_libraries(
                ${_LIBRARIES}
                BLAS
                ${BLAS_mkl_SEARCH_SYMBOL}
                "${additional_flags}"
                "${SEARCH_LIBS}"
700
                "${OMP_LIB};${CMAKE_THREAD_LIBS_INIT};${LM}"
701
                )
702 703 704
                if(_LIBRARIES)
                    set(BLAS_LINKER_FLAGS "${additional_flags}")
                endif()
705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729
            endif()
        endforeach ()

    endif (_LANGUAGES_ MATCHES C OR _LANGUAGES_ MATCHES CXX)

endif (BLA_VENDOR MATCHES "Intel*" OR BLA_VENDOR STREQUAL "All")


if (BLA_VENDOR STREQUAL "Goto" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        # gotoblas (http://www.tacc.utexas.edu/tacc-projects/gotoblas2)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "goto2"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "Goto" OR BLA_VENDOR STREQUAL "All")


730
# OpenBlas
731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
if (BLA_VENDOR STREQUAL "Open" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        # openblas (http://www.openblas.net/)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "openblas"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "Open" OR BLA_VENDOR STREQUAL "All")


748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777
# EigenBlas
if (BLA_VENDOR STREQUAL "Eigen" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        # eigenblas (http://eigen.tuxfamily.org/index.php?title=Main_Page)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "eigen_blas"
        ""
        )
    endif()

    if(NOT BLAS_LIBRARIES)
        # eigenblas (http://eigen.tuxfamily.org/index.php?title=Main_Page)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "eigen_blas_static"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "Eigen" OR BLA_VENDOR STREQUAL "All")


778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908
if (BLA_VENDOR STREQUAL "ATLAS" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        # BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        dgemm
        ""
        "f77blas;atlas"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "ATLAS" OR BLA_VENDOR STREQUAL "All")


# BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
if (BLA_VENDOR STREQUAL "PhiPACK" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "sgemm;dgemm;blas"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "PhiPACK" OR BLA_VENDOR STREQUAL "All")


# BLAS in Alpha CXML library?
if (BLA_VENDOR STREQUAL "CXML" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "cxml"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "CXML" OR BLA_VENDOR STREQUAL "All")


# BLAS in Alpha DXML library? (now called CXML, see above)
if (BLA_VENDOR STREQUAL "DXML" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "dxml"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "DXML" OR BLA_VENDOR STREQUAL "All")


# BLAS in Sun Performance library?
if (BLA_VENDOR STREQUAL "SunPerf" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_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 STREQUAL "SCSL" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "scsl"
        ""
        )
    endif()

endif ()


# BLAS in SGIMATH library?
if (BLA_VENDOR STREQUAL "SGIMATH" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "complib.sgimath"
        ""
        )
    endif()

endif ()


# BLAS in IBM ESSL library? (requires generic BLAS lib, too)
if (BLA_VENDOR STREQUAL "IBMESSL" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
909
        "essl"
910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100
        ""
        )
    endif()

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( 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 "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(_ACML_ROOT)

    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_fortran_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_fortran_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_fortran_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_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "acml;acml_mv"
        ""
        )
    endif()

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "acml_mp;acml_mv"
        ""
        )
    endif()

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        sgemm
        ""
        "acml;acml_mv;CALBLAS"
        ""
        )
    endif()

endif (BLA_VENDOR MATCHES "ACML.*" OR BLA_VENDOR STREQUAL "All") # ACML


# Apple BLAS library?
if (BLA_VENDOR STREQUAL "Apple" OR BLA_VENDOR STREQUAL "All")

    if(NOT BLAS_LIBRARIES)
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        dgemm
        ""
        "Accelerate"
        ""
        )
    endif()

endif (BLA_VENDOR STREQUAL "Apple" OR BLA_VENDOR STREQUAL "All")


if (BLA_VENDOR STREQUAL "NAS" OR BLA_VENDOR STREQUAL "All")

    if ( NOT BLAS_LIBRARIES )
        check_fortran_libraries(
        BLAS_LIBRARIES
        BLAS
        dgemm
        ""
        "vecLib"
        ""
        )
    endif ()

endif (BLA_VENDOR STREQUAL "NAS" OR BLA_VENDOR STREQUAL "All")


# Generic BLAS library?
if (BLA_VENDOR STREQUAL "Generic" OR BLA_VENDOR STREQUAL "All")

1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
    set(BLAS_SEARCH_LIBS "blas;blas_LINUX;blas_MAC;blas_WINDOWS")
    foreach (SEARCH_LIB ${BLAS_SEARCH_LIBS})
        if (BLAS_LIBRARIES)
        else ()
            check_fortran_libraries(
            BLAS_LIBRARIES
            BLAS
            sgemm
            ""
            "${SEARCH_LIB}"
1111
            "${LGFORTRAN}"
1112 1113 1114
            )
        endif()
    endforeach ()
1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133

endif (BLA_VENDOR STREQUAL "Generic" OR BLA_VENDOR STREQUAL "All")


if(BLA_F95)

    if(BLAS95_LIBRARIES)
       set(BLAS95_FOUND TRUE)
    else()
       set(BLAS95_FOUND FALSE)
    endif()

    if(NOT BLAS_FIND_QUIETLY)
        if(BLAS95_FOUND)
            message(STATUS "A library with BLAS95 API found.")
            message(STATUS "BLAS_LIBRARIES ${BLAS_LIBRARIES}")
        else(BLAS95_FOUND)
            message(WARNING "BLA_VENDOR has been set to ${BLA_VENDOR} but blas 95 libraries could not be found or check of symbols failed."
                        "\nPlease indicate where to find blas libraries. You have three options:\n"
1134
                        "- Option 1: Provide the installation directory of BLAS library with cmake option: -DBLAS_DIR=your/path/to/blas\n"
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                        "- Option 2: Provide the directory where to find BLAS libraries with cmake option: -DBLAS_LIBDIR=your/path/to/blas/libs\n"
                        "- Option 3: Update your environment variable (Linux: LD_LIBRARY_PATH, Windows: LIB, Mac: DYLD_LIBRARY_PATH)\n"
                        "\nTo follow libraries detection more precisely you can activate a verbose mode with -DBLAS_VERBOSE=ON at cmake configure."
                        "\nYou could also specify a BLAS vendor to look for by setting -DBLA_VENDOR=blas_vendor_name."
                        "\nList of possible BLAS vendor: Goto, ATLAS PhiPACK, CXML, DXML, SunPerf, SCSL, SGIMATH, IBMESSL, Intel10_32 (intel mkl v10 32 bit),"
                        "Intel10_64lp (intel mkl v10 64 bit, lp thread model, lp64 model), Intel10_64lp_seq (intel mkl v10 64 bit, sequential code, lp64 model),"
                        "Intel( older versions of mkl 32 and 64 bit), ACML, ACML_MP, ACML_GPU, Apple, NAS, Generic")
            if(BLAS_FIND_REQUIRED)
                message(FATAL_ERROR
                "A required library with BLAS95 API not found. Please specify library location.")
            else()
                message(STATUS
                "A library with BLAS95 API not found. Please specify library location.")
            endif()
        endif(BLAS95_FOUND)
    endif(NOT BLAS_FIND_QUIETLY)

    set(BLAS_FOUND TRUE)
    set(BLAS_LIBRARIES "${BLAS95_LIBRARIES}")
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    if (NOT BLAS_LIBRARIES_DEP)
        set(BLAS_LIBRARIES_DEP "${BLAS95_LIBRARIES}")
    endif()
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else(BLA_F95)

    if(BLAS_LIBRARIES)
        set(BLAS_FOUND TRUE)
    else()
        set(BLAS_FOUND FALSE)
    endif()

    if(NOT BLAS_FIND_QUIETLY)
        if(BLAS_FOUND)
            message(STATUS "A library with BLAS API found.")
            message(STATUS "BLAS_LIBRARIES ${BLAS_LIBRARIES}")
        else(BLAS_FOUND)
            message(WARNING "BLA_VENDOR has been set to ${BLA_VENDOR} but blas libraries could not be found or check of symbols failed."
                        "\nPlease indicate where to find blas libraries. You have three options:\n"
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                        "- Option 1: Provide the installation directory of BLAS library with cmake option: -DBLAS_DIR=your/path/to/blas\n"
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                        "- Option 2: Provide the directory where to find BLAS libraries with cmake option: -DBLAS_LIBDIR=your/path/to/blas/libs\n"
                        "- Option 3: Update your environment variable (Linux: LD_LIBRARY_PATH, Windows: LIB, Mac: DYLD_LIBRARY_PATH)\n"
                        "\nTo follow libraries detection more precisely you can activate a verbose mode with -DBLAS_VERBOSE=ON at cmake configure."
                        "\nYou could also specify a BLAS vendor to look for by setting -DBLA_VENDOR=blas_vendor_name."
                        "\nList of possible BLAS vendor: Goto, ATLAS PhiPACK, CXML, DXML, SunPerf, SCSL, SGIMATH, IBMESSL, Intel10_32 (intel mkl v10 32 bit),"
                        "Intel10_64lp (intel mkl v10 64 bit, lp thread model, lp64 model), Intel10_64lp_seq (intel mkl v10 64 bit, sequential code, lp64 model),"
                        "Intel( older versions of mkl 32 and 64 bit), ACML, ACML_MP, ACML_GPU, Apple, NAS, Generic")
            if(BLAS_FIND_REQUIRED)
                message(FATAL_ERROR
                    "A required library with BLAS API not found. Please specify library location.")
            else()
                message(STATUS
                    "A library with BLAS API not found. Please specify library location.")
            endif()
        endif(BLAS_FOUND)
    endif(NOT BLAS_FIND_QUIETLY)

endif(BLA_F95)

set(CMAKE_FIND_LIBRARY_SUFFIXES ${_blas_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
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if (BLAS_FOUND)
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    list(GET BLAS_LIBRARIES 0 first_lib)
    get_filename_component(first_lib_path "${first_lib}" PATH)
    if (${first_lib_path} MATCHES "(/lib(32|64)?$)|(/lib/intel64$|/lib/ia32$)")
        string(REGEX REPLACE "(/lib(32|64)?$)|(/lib/intel64$|/lib/ia32$)" "" not_cached_dir "${first_lib_path}")
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        set(BLAS_DIR_FOUND "${not_cached_dir}" CACHE PATH "Installation directory of BLAS library" FORCE)
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    else()
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        set(BLAS_DIR_FOUND "${first_lib_path}" CACHE PATH "Installation directory of BLAS library" FORCE)
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    endif()
endif()