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# @copyright (c) 2009-2014 The University of Tennessee and The University
# of Tennessee Research Foundation.
# All rights reserved.
# @copyright (c) 2012-2016 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
# 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
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# BLAS_COMPILER_FLAGS - uncached list of required compiler flags (including -I for mkl headers).
# 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
# BLAS_VENDOR_FOUND stores the BLAS vendor found
# 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
# The module can also look for the following environment variables if paths
# are not given as cmake variable: BLAS_DIR, BLAS_INCDIR, BLAS_LIBDIR
# For MKL case and if no paths are given as hints, we will try to use the MKLROOT
# environment variable
# BLAS_VERBOSE Print some additional information during BLAS libraries detection
##########
### List of vendors (BLA_VENDOR) valid in this module
########## List of vendors (BLA_VENDOR) valid in this module
## Open (for OpenBlas), Eigen (for EigenBlas), Goto, ATLAS PhiPACK,
## CXML, DXML, SunPerf, SCSL, SGIMATH, IBMESSL, IBMESSLMT
## 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
# C/CXX should be enabled to use Intel mkl
###
# 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
# 2) we look in environment variable BLAS_LIBDIR or BLAS_DIR (we guess the libdirs) if defined
# 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
#
#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
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# 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.)
## 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 ${_lib_to_find}. You have three options:\n"
"- Option 1: Provide the Installation directory of BLAS library with cmake option: -D${LIBNAME}_DIR=your/path/to/${libname}/\n"
"- Option 2: Provide the directory where to find the library with cmake option: -D${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)
set(BLAS_DIR "" CACHE PATH "Installation directory of BLAS library")
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()
option(BLAS_VERBOSE "Print some additional information during BLAS libraries detection" OFF)
mark_as_advanced(BLAS_VERBOSE)
set(_blas_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
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# 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 ${ARGN})
set(_libraries_work TRUE)
set(${LIBRARIES})
set(ENV_MKLROOT "$ENV{MKLROOT}")
set(ENV_BLAS_DIR "$ENV{BLAS_DIR}")
set(ENV_BLAS_LIBDIR "$ENV{BLAS_LIBDIR}")
if (NOT _libdir)
if (BLAS_LIBDIR)
list(APPEND _libdir "${BLAS_LIBDIR}")
elseif (BLAS_DIR)
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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