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FindBLAS.cmake
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FindBLAS.cmake
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# - 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_INFO - name of the detected BLAS library.
# BLAS_F2C - set to true if following the f2c return convention
# BLAS_LIBRARIES - list of libraries to link against to use BLAS
# BLAS_INCLUDE_DIR - include directory
# Do nothing if BLAS was found before
IF(NOT BLAS_FOUND)
SET(BLAS_LIBRARIES)
SET(BLAS_INCLUDE_DIR)
SET(BLAS_INFO)
SET(BLAS_F2C)
SET(WITH_BLAS "" CACHE STRING "Blas type [mkl/open/goto/acml/atlas/accelerate/veclib/generic]")
# Old FindBlas
INCLUDE(CheckCSourceRuns)
INCLUDE(CheckFortranFunctionExists)
MACRO(Check_Fortran_Libraries LIBRARIES _prefix _name _flags _list)
# 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 NOTFOUND.
# 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(__list)
foreach(_elem ${_list})
if(__list)
set(__list "${__list} - ${_elem}")
else(__list)
set(__list "${_elem}")
endif(__list)
endforeach(_elem)
message(STATUS "Checking for [${__list}]")
set(_libraries_work TRUE)
set(${LIBRARIES})
set(_combined_name)
foreach(_library ${_list})
set(_combined_name ${_combined_name}_${_library})
if(_libraries_work)
if ( WIN32 )
find_library(${_prefix}_${_library}_LIBRARY
NAMES ${_library}
PATHS ENV LIB
PATHS ENV PATH )
endif ( WIN32 )
if ( APPLE )
find_library(${_prefix}_${_library}_LIBRARY
NAMES ${_library}
PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 /opt/OpenBLAS/lib /usr/lib/aarch64-linux-gnu
ENV DYLD_LIBRARY_PATH )
else ( APPLE )
find_library(${_prefix}_${_library}_LIBRARY
NAMES ${_library}
PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 /opt/OpenBLAS/lib /usr/lib/aarch64-linux-gnu
ENV LD_LIBRARY_PATH )
endif( APPLE )
mark_as_advanced(${_prefix}_${_library}_LIBRARY)
set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
set(_libraries_work ${${_prefix}_${_library}_LIBRARY})
MESSAGE(STATUS " Library ${_library}: ${${_prefix}_${_library}_LIBRARY}")
endif(_libraries_work)
endforeach(_library ${_list})
if(_libraries_work)
# Test this combination of libraries.
set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
if (CMAKE_Fortran_COMPILER_WORKS)
check_fortran_function_exists(${_name} ${_prefix}${_combined_name}_WORKS)
else (CMAKE_Fortran_COMPILER_WORKS)
check_function_exists("${_name}_" ${_prefix}${_combined_name}_WORKS)
endif (CMAKE_Fortran_COMPILER_WORKS)
set(CMAKE_REQUIRED_LIBRARIES)
mark_as_advanced(${_prefix}${_combined_name}_WORKS)
set(_libraries_work ${${_prefix}${_combined_name}_WORKS})
endif(_libraries_work)
if(NOT _libraries_work)
set(${LIBRARIES} NOTFOUND)
endif(NOT _libraries_work)
endmacro(Check_Fortran_Libraries)
# Intel MKL?
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "mkl")))
FIND_PACKAGE(MKL)
IF(MKL_FOUND)
SET(BLAS_INFO "mkl")
SET(BLAS_LIBRARIES ${MKL_LIBRARIES})
SET(BLAS_INCLUDE_DIR ${MKL_INCLUDE_DIR})
SET(BLAS_VERSION ${MKL_VERSION})
ENDIF(MKL_FOUND)
endif()
# Apple BLAS library?
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "accelerate")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"Accelerate")
if (BLAS_LIBRARIES)
set(BLAS_INFO "accelerate")
set(BLAS_IS_ACCELERATE 1)
endif (BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "veclib")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"vecLib")
if (BLAS_LIBRARIES)
set(BLAS_INFO "veclib")
endif (BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "open")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"openblas")
if(BLAS_LIBRARIES)
set(BLAS_INFO "open")
endif(BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "open")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"openblas;pthread")
if(BLAS_LIBRARIES)
set(BLAS_INFO "open")
endif(BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES) AND (WIN32)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "open")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"libopenblas")
if(BLAS_LIBRARIES)
set(BLAS_INFO "open")
endif(BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "goto")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"goto2;gfortran")
if (BLAS_LIBRARIES)
set(BLAS_INFO "goto")
endif (BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "goto")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"goto2;gfortran;pthread")
if (BLAS_LIBRARIES)
set(BLAS_INFO "goto")
endif (BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "acml")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"acml;gfortran")
if (BLAS_LIBRARIES)
set(BLAS_INFO "acml")
endif (BLAS_LIBRARIES)
endif()
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "FLAME")))
# FLAME's blis library (https://github.com/flame/blis)
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"blis")
if (BLAS_LIBRARIES)
set(BLAS_INFO "FLAME")
endif (BLAS_LIBRARIES)
endif()
# BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "atlas")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"ptf77blas;atlas;gfortran")
if (BLAS_LIBRARIES)
set(BLAS_INFO "atlas")
endif (BLAS_LIBRARIES)
endif()
# Generic BLAS library?
if((NOT BLAS_LIBRARIES)
AND ((NOT WITH_BLAS) OR (WITH_BLAS STREQUAL "generic")))
check_fortran_libraries(
BLAS_LIBRARIES
BLAS
sgemm
""
"blas")
if (BLAS_LIBRARIES)
set(BLAS_INFO "generic")
endif (BLAS_LIBRARIES)
endif()
# Determine if blas was compiled with the f2c conventions
IF (BLAS_LIBRARIES)
SET(CMAKE_REQUIRED_LIBRARIES ${BLAS_LIBRARIES})
CHECK_C_SOURCE_RUNS("
#include <stdlib.h>
#include <stdio.h>
float x[4] = { 1, 2, 3, 4 };
float y[4] = { .1, .01, .001, .0001 };
int four = 4;
int one = 1;
extern double sdot_();
int main() {
int i;
double r = sdot_(&four, x, &one, y, &one);
exit((float)r != (float).1234);
}" BLAS_F2C_DOUBLE_WORKS )
CHECK_C_SOURCE_RUNS("
#include <stdlib.h>
#include <stdio.h>
float x[4] = { 1, 2, 3, 4 };
float y[4] = { .1, .01, .001, .0001 };
int four = 4;
int one = 1;
extern float sdot_();
int main() {
int i;
double r = sdot_(&four, x, &one, y, &one);
exit((float)r != (float).1234);
}" BLAS_F2C_FLOAT_WORKS )
IF (BLAS_F2C_DOUBLE_WORKS AND NOT BLAS_F2C_FLOAT_WORKS)
MESSAGE(STATUS "This BLAS uses the F2C return conventions")
SET(BLAS_F2C TRUE)
ELSE (BLAS_F2C_DOUBLE_WORKS AND NOT BLAS_F2C_FLOAT_WORKS)
SET(BLAS_F2C FALSE)
ENDIF (BLAS_F2C_DOUBLE_WORKS AND NOT BLAS_F2C_FLOAT_WORKS)
CHECK_C_SOURCE_RUNS("
#include <stdlib.h>
#include <stdio.h>
float x[4] = { 1, 2, 3, 4 };
float y[4] = { .1, .01, .001, .0001 };
extern float cblas_sdot();
int main() {
int i;
double r = cblas_sdot(4, x, 1, y, 1);
exit((float)r != (float).1234);
}" BLAS_USE_CBLAS_DOT )
IF (BLAS_USE_CBLAS_DOT)
SET(BLAS_USE_CBLAS_DOT TRUE)
ELSE (BLAS_USE_CBLAS_DOT)
SET(BLAS_USE_CBLAS_DOT FALSE)
ENDIF (BLAS_USE_CBLAS_DOT)
SET(CMAKE_REQUIRED_LIBRARIES)
ENDIF(BLAS_LIBRARIES)
# epilogue
if(BLAS_LIBRARIES)
set(BLAS_FOUND TRUE)
else(BLAS_LIBRARIES)
set(BLAS_FOUND FALSE)
endif(BLAS_LIBRARIES)
IF (NOT BLAS_FOUND AND BLAS_FIND_REQUIRED)
message(FATAL_ERROR "Cannot find a library with BLAS API. Please specify library location.")
ENDIF (NOT BLAS_FOUND AND BLAS_FIND_REQUIRED)
IF(NOT BLAS_FIND_QUIETLY)
IF(BLAS_FOUND)
MESSAGE(STATUS "Found a library with BLAS API (${BLAS_INFO}).")
ELSE(BLAS_FOUND)
MESSAGE(STATUS "Cannot find a library with BLAS API. Not using BLAS.")
ENDIF(BLAS_FOUND)
ENDIF(NOT BLAS_FIND_QUIETLY)
# Do nothing is BLAS was found before
ENDIF(NOT BLAS_FOUND)