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|
# Find BLAS library
#
# This module finds an installed library that implements the BLAS
# linear-algebra interface (see http://www.netlib.org/blas/).
# The list of libraries searched for is mainly 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_INCLUDE_DIR - Directories containing the BLAS header files
# BLAS_DEFINITIONS - Compilation options to use BLAS
# BLAS_LINKER_FLAGS - Linker flags to use BLAS (excluding -l
# and -L).
# BLAS_LIBRARIES_DIR - Directories containing the BLAS libraries.
# May be null if BLAS_LIBRARIES contains libraries name using full path.
# BLAS_LIBRARIES - List of libraries to link against BLAS interface.
# May be null if the compiler supports auto-link (e.g. VC++).
# BLAS_USE_FILE - The name of the cmake module to include to compile
# applications or libraries using BLAS.
#
# This module was modified by CGAL team:
# - find libraries for a C++ compiler, instead of Fortran
# - added BLAS_INCLUDE_DIR, BLAS_DEFINITIONS and BLAS_LIBRARIES_DIR
# - removed BLAS95_LIBRARIES
include(CheckFunctionExists)
# 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_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 and DEFINITIONS to the required definitions.
# 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.
macro(check_fortran_libraries DEFINITIONS LIBRARIES _prefix _name _flags _list _path)
#message("DEBUG: check_fortran_libraries(${_list} in ${_path})")
# Check for the existence of the libraries given by _list
set(_libraries_found TRUE)
set(_libraries_work FALSE)
set(${DEFINITIONS} "")
set(${LIBRARIES} "")
set(_combined_name)
foreach(_library ${_list})
set(_combined_name ${_combined_name}_${_library})
if(_libraries_found)
# search first in ${_path}
find_library(${_prefix}_${_library}_LIBRARY
NAMES ${_library}
PATHS ${_path} NO_DEFAULT_PATH
)
# if not found, search in environment variables and system
if ( WIN32 )
find_library(${_prefix}_${_library}_LIBRARY
NAMES ${_library}
PATHS ENV LIB
)
elseif ( APPLE )
find_library(${_prefix}_${_library}_LIBRARY
NAMES ${_library}
PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV DYLD_LIBRARY_PATH
)
else ()
find_library(${_prefix}_${_library}_LIBRARY
NAMES ${_library}
PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV LD_LIBRARY_PATH
)
endif()
mark_as_advanced(${_prefix}_${_library}_LIBRARY)
set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
set(_libraries_found ${${_prefix}_${_library}_LIBRARY})
endif(_libraries_found)
endforeach(_library ${_list})
if(_libraries_found)
set(_libraries_found ${${LIBRARIES}})
endif()
# Test this combination of libraries with the Fortran/f2c interface.
# We test the Fortran interface first as it is well standardized.
if(_libraries_found AND NOT _libraries_work)
set(${DEFINITIONS} "-D${_prefix}_USE_F2C")
set(${LIBRARIES} ${_libraries_found})
# Some C++ linkers require the f2c library to link with Fortran libraries.
# I do not know which ones, thus I just add the f2c library if it is available.
find_package( F2C QUIET )
if ( F2C_FOUND )
set(${DEFINITIONS} ${${DEFINITIONS}} ${F2C_DEFINITIONS})
set(${LIBRARIES} ${${LIBRARIES}} ${F2C_LIBRARIES})
endif()
set(CMAKE_REQUIRED_DEFINITIONS ${${DEFINITIONS}})
set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
#message("DEBUG: CMAKE_REQUIRED_DEFINITIONS = ${CMAKE_REQUIRED_DEFINITIONS}")
#message("DEBUG: CMAKE_REQUIRED_LIBRARIES = ${CMAKE_REQUIRED_LIBRARIES}")
# Check if function exists with f2c calling convention (ie a trailing underscore)
check_function_exists(${_name}_ ${_prefix}_${_name}_${_combined_name}_f2c_WORKS)
set(CMAKE_REQUIRED_DEFINITIONS} "")
set(CMAKE_REQUIRED_LIBRARIES "")
mark_as_advanced(${_prefix}_${_name}_${_combined_name}_f2c_WORKS)
set(_libraries_work ${${_prefix}_${_name}_${_combined_name}_f2c_WORKS})
endif(_libraries_found AND NOT _libraries_work)
# If not found, test this combination of libraries with a C interface.
# A few implementations (ie ACML) provide a C interface. Unfortunately, there is no standard.
if(_libraries_found AND NOT _libraries_work)
set(${DEFINITIONS} "")
set(${LIBRARIES} ${_libraries_found})
set(CMAKE_REQUIRED_DEFINITIONS "")
set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
#message("DEBUG: CMAKE_REQUIRED_LIBRARIES = ${CMAKE_REQUIRED_LIBRARIES}")
check_function_exists(${_name} ${_prefix}_${_name}${_combined_name}_WORKS)
set(CMAKE_REQUIRED_LIBRARIES "")
mark_as_advanced(${_prefix}_${_name}${_combined_name}_WORKS)
set(_libraries_work ${${_prefix}_${_name}${_combined_name}_WORKS})
endif(_libraries_found AND NOT _libraries_work)
# on failure
if(NOT _libraries_work)
set(${DEFINITIONS} "")
set(${LIBRARIES} FALSE)
endif()
#message("DEBUG: ${DEFINITIONS} = ${${DEFINITIONS}}")
#message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")
endmacro(check_fortran_libraries)
#
# main
#
# Is it already configured?
if (BLAS_LIBRARIES_DIR OR BLAS_LIBRARIES)
set(BLAS_FOUND TRUE)
else()
# reset variables
set( BLAS_INCLUDE_DIR "" )
set( BLAS_DEFINITIONS "" )
set( BLAS_LINKER_FLAGS "" )
set( BLAS_LIBRARIES "" )
set( BLAS_LIBRARIES_DIR "" )
#
# If Unix, search for BLAS function in possible libraries
#
# BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"cblas;f77blas;atlas"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
# BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"sgemm;dgemm;blas"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
# BLAS in Alpha CXML library?
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"cxml"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
# BLAS in Alpha DXML library? (now called CXML, see above)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"dxml"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
# BLAS in Sun Performance library?
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
"-xlic_lib=sunperf"
"sunperf;sunmath"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
if(BLAS_LIBRARIES)
# Extra linker flag
set(BLAS_LINKER_FLAGS "-xlic_lib=sunperf")
endif()
endif()
# BLAS in SCSL library? (SGI/Cray Scientific Library)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"scsl"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
# BLAS in SGIMATH library?
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"complib.sgimath"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
# BLAS in IBM ESSL library? (requires generic BLAS lib, too)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"essl;blas"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
#BLAS in intel mkl 10 library? (em64t 64bit)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"mkl_intel_lp64;mkl_intel_thread;mkl_core;guide;pthread"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
### windows version of intel mkl 10?
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
SGEMM
""
"mkl_c_dll;mkl_intel_thread_dll;mkl_core_dll;libguide40"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
#older versions of intel mkl libs
# BLAS in intel mkl library? (shared)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"mkl;guide;pthread"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
#BLAS in intel mkl library? (static, 32bit)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"mkl_ia32;guide;pthread"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
#BLAS in intel mkl library? (static, em64t 64bit)
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"mkl_em64t;guide;pthread"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
#BLAS in acml library?
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"acml"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
# Apple BLAS library?
if(NOT BLAS_LIBRARIES)
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"Accelerate"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
if ( NOT BLAS_LIBRARIES )
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"vecLib"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif ( NOT BLAS_LIBRARIES )
# Generic BLAS library?
# This configuration *must* be the last try as this library is notably slow.
if ( NOT BLAS_LIBRARIES )
check_fortran_libraries(
BLAS_DEFINITIONS
BLAS_LIBRARIES
BLAS
sgemm
""
"blas"
"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
)
endif()
if(BLAS_LIBRARIES_DIR OR BLAS_LIBRARIES)
set(BLAS_FOUND TRUE)
else()
set(BLAS_FOUND FALSE)
endif()
if(NOT BLAS_FIND_QUIETLY)
if(BLAS_FOUND)
message(STATUS "A library with BLAS API found.")
else(BLAS_FOUND)
if(BLAS_FIND_REQUIRED)
message(FATAL_ERROR "A required library with BLAS API not found. Please specify library location.")
else()
message(STATUS "A library with BLAS API not found. Please specify library location.")
endif()
endif(BLAS_FOUND)
endif(NOT BLAS_FIND_QUIETLY)
# Add variables to cache
set( BLAS_INCLUDE_DIR "${BLAS_INCLUDE_DIR}"
CACHE PATH "Directories containing the BLAS header files" FORCE )
set( BLAS_DEFINITIONS "${BLAS_DEFINITIONS}"
CACHE STRING "Compilation options to use BLAS" FORCE )
set( BLAS_LINKER_FLAGS "${BLAS_LINKER_FLAGS}"
CACHE STRING "Linker flags to use BLAS" FORCE )
set( BLAS_LIBRARIES "${BLAS_LIBRARIES}"
CACHE FILEPATH "BLAS libraries name" FORCE )
set( BLAS_LIBRARIES_DIR "${BLAS_LIBRARIES_DIR}"
CACHE PATH "Directories containing the BLAS libraries" FORCE )
#message("DEBUG: BLAS_INCLUDE_DIR = ${BLAS_INCLUDE_DIR}")
#message("DEBUG: BLAS_DEFINITIONS = ${BLAS_DEFINITIONS}")
#message("DEBUG: BLAS_LINKER_FLAGS = ${BLAS_LINKER_FLAGS}")
#message("DEBUG: BLAS_LIBRARIES = ${BLAS_LIBRARIES}")
#message("DEBUG: BLAS_LIBRARIES_DIR = ${BLAS_LIBRARIES_DIR}")
#message("DEBUG: BLAS_FOUND = ${BLAS_FOUND}")
endif(BLAS_LIBRARIES_DIR OR BLAS_LIBRARIES)
|
