| # 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) |
