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419 lines
13 KiB
419 lines
13 KiB
# Find BLAS library
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#
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# This module finds an installed library that implements the BLAS
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# linear-algebra interface (see http://www.netlib.org/blas/).
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# The list of libraries searched for is mainly taken
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# from the autoconf macro file, acx_blas.m4 (distributed at
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# http://ac-archive.sourceforge.net/ac-archive/acx_blas.html).
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#
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# This module sets the following variables:
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# BLAS_FOUND - set to true if a library implementing the BLAS interface
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# is found
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# BLAS_INCLUDE_DIR - Directories containing the BLAS header files
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# BLAS_DEFINITIONS - Compilation options to use BLAS
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# BLAS_LINKER_FLAGS - Linker flags to use BLAS (excluding -l
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# and -L).
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# BLAS_LIBRARIES_DIR - Directories containing the BLAS libraries.
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# May be null if BLAS_LIBRARIES contains libraries name using full path.
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# BLAS_LIBRARIES - List of libraries to link against BLAS interface.
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# May be null if the compiler supports auto-link (e.g. VC++).
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# BLAS_USE_FILE - The name of the cmake module to include to compile
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# applications or libraries using BLAS.
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#
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# This module was modified by CGAL team:
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# - find libraries for a C++ compiler, instead of Fortran
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# - added BLAS_INCLUDE_DIR, BLAS_DEFINITIONS and BLAS_LIBRARIES_DIR
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# - removed BLAS95_LIBRARIES
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include(CheckFunctionExists)
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# This macro checks for the existence of the combination of fortran libraries
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# given by _list. If the combination is found, this macro checks (using the
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# check_function_exists macro) whether can link against that library
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# combination using the name of a routine given by _name using the linker
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# flags given by _flags. If the combination of libraries is found and passes
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# the link test, LIBRARIES is set to the list of complete library paths that
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# have been found and DEFINITIONS to the required definitions.
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# Otherwise, LIBRARIES is set to FALSE.
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# N.B. _prefix is the prefix applied to the names of all cached variables that
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# are generated internally and marked advanced by this macro.
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macro(check_fortran_libraries DEFINITIONS LIBRARIES _prefix _name _flags _list _path)
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#message("DEBUG: check_fortran_libraries(${_list} in ${_path})")
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# Check for the existence of the libraries given by _list
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set(_libraries_found TRUE)
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set(_libraries_work FALSE)
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set(${DEFINITIONS} "")
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set(${LIBRARIES} "")
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set(_combined_name)
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foreach(_library ${_list})
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set(_combined_name ${_combined_name}_${_library})
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if(_libraries_found)
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# search first in ${_path}
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find_library(${_prefix}_${_library}_LIBRARY
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NAMES ${_library}
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PATHS ${_path} NO_DEFAULT_PATH
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)
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# if not found, search in environment variables and system
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if ( WIN32 )
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find_library(${_prefix}_${_library}_LIBRARY
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NAMES ${_library}
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PATHS ENV LIB
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)
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elseif ( APPLE )
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find_library(${_prefix}_${_library}_LIBRARY
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NAMES ${_library}
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PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV DYLD_LIBRARY_PATH
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)
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else ()
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find_library(${_prefix}_${_library}_LIBRARY
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NAMES ${_library}
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PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV LD_LIBRARY_PATH
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)
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endif()
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mark_as_advanced(${_prefix}_${_library}_LIBRARY)
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set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
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set(_libraries_found ${${_prefix}_${_library}_LIBRARY})
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endif(_libraries_found)
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endforeach(_library ${_list})
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if(_libraries_found)
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set(_libraries_found ${${LIBRARIES}})
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endif()
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# Test this combination of libraries with the Fortran/f2c interface.
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# We test the Fortran interface first as it is well standardized.
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if(_libraries_found AND NOT _libraries_work)
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set(${DEFINITIONS} "-D${_prefix}_USE_F2C")
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set(${LIBRARIES} ${_libraries_found})
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# Some C++ linkers require the f2c library to link with Fortran libraries.
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# I do not know which ones, thus I just add the f2c library if it is available.
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find_package( F2C QUIET )
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if ( F2C_FOUND )
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set(${DEFINITIONS} ${${DEFINITIONS}} ${F2C_DEFINITIONS})
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set(${LIBRARIES} ${${LIBRARIES}} ${F2C_LIBRARIES})
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endif()
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set(CMAKE_REQUIRED_DEFINITIONS ${${DEFINITIONS}})
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set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
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#message("DEBUG: CMAKE_REQUIRED_DEFINITIONS = ${CMAKE_REQUIRED_DEFINITIONS}")
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#message("DEBUG: CMAKE_REQUIRED_LIBRARIES = ${CMAKE_REQUIRED_LIBRARIES}")
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# Check if function exists with f2c calling convention (ie a trailing underscore)
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check_function_exists(${_name}_ ${_prefix}_${_name}_${_combined_name}_f2c_WORKS)
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set(CMAKE_REQUIRED_DEFINITIONS} "")
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set(CMAKE_REQUIRED_LIBRARIES "")
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mark_as_advanced(${_prefix}_${_name}_${_combined_name}_f2c_WORKS)
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set(_libraries_work ${${_prefix}_${_name}_${_combined_name}_f2c_WORKS})
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endif(_libraries_found AND NOT _libraries_work)
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# If not found, test this combination of libraries with a C interface.
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# A few implementations (ie ACML) provide a C interface. Unfortunately, there is no standard.
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if(_libraries_found AND NOT _libraries_work)
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set(${DEFINITIONS} "")
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set(${LIBRARIES} ${_libraries_found})
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set(CMAKE_REQUIRED_DEFINITIONS "")
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set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
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#message("DEBUG: CMAKE_REQUIRED_LIBRARIES = ${CMAKE_REQUIRED_LIBRARIES}")
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check_function_exists(${_name} ${_prefix}_${_name}${_combined_name}_WORKS)
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set(CMAKE_REQUIRED_LIBRARIES "")
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mark_as_advanced(${_prefix}_${_name}${_combined_name}_WORKS)
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set(_libraries_work ${${_prefix}_${_name}${_combined_name}_WORKS})
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endif(_libraries_found AND NOT _libraries_work)
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# on failure
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if(NOT _libraries_work)
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set(${DEFINITIONS} "")
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set(${LIBRARIES} FALSE)
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endif()
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#message("DEBUG: ${DEFINITIONS} = ${${DEFINITIONS}}")
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#message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")
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endmacro(check_fortran_libraries)
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#
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# main
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#
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# Is it already configured?
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if (BLAS_LIBRARIES_DIR OR BLAS_LIBRARIES)
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set(BLAS_FOUND TRUE)
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else()
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# reset variables
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set( BLAS_INCLUDE_DIR "" )
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set( BLAS_DEFINITIONS "" )
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set( BLAS_LINKER_FLAGS "" )
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set( BLAS_LIBRARIES "" )
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set( BLAS_LIBRARIES_DIR "" )
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#
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# If Unix, search for BLAS function in possible libraries
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#
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# BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"cblas;f77blas;atlas"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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# BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"sgemm;dgemm;blas"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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# BLAS in Alpha CXML library?
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"cxml"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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# BLAS in Alpha DXML library? (now called CXML, see above)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"dxml"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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# BLAS in Sun Performance library?
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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"-xlic_lib=sunperf"
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"sunperf;sunmath"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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if(BLAS_LIBRARIES)
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# Extra linker flag
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set(BLAS_LINKER_FLAGS "-xlic_lib=sunperf")
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endif()
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endif()
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# BLAS in SCSL library? (SGI/Cray Scientific Library)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"scsl"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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# BLAS in SGIMATH library?
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"complib.sgimath"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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# BLAS in IBM ESSL library? (requires generic BLAS lib, too)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"essl;blas"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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#BLAS in intel mkl 10 library? (em64t 64bit)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"mkl_intel_lp64;mkl_intel_thread;mkl_core;guide;pthread"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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### windows version of intel mkl 10?
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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SGEMM
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""
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"mkl_c_dll;mkl_intel_thread_dll;mkl_core_dll;libguide40"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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#older versions of intel mkl libs
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# BLAS in intel mkl library? (shared)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"mkl;guide;pthread"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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#BLAS in intel mkl library? (static, 32bit)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"mkl_ia32;guide;pthread"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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#BLAS in intel mkl library? (static, em64t 64bit)
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"mkl_em64t;guide;pthread"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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#BLAS in acml library?
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"acml"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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# Apple BLAS library?
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if(NOT BLAS_LIBRARIES)
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"Accelerate"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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if ( NOT BLAS_LIBRARIES )
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"vecLib"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif ( NOT BLAS_LIBRARIES )
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# Generic BLAS library?
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# This configuration *must* be the last try as this library is notably slow.
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if ( NOT BLAS_LIBRARIES )
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check_fortran_libraries(
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BLAS_DEFINITIONS
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BLAS_LIBRARIES
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BLAS
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sgemm
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""
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"blas"
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"${CGAL_TAUCS_LIBRARIES_DIR} ENV BLAS_LIB_DIR"
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)
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endif()
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if(BLAS_LIBRARIES_DIR OR BLAS_LIBRARIES)
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set(BLAS_FOUND TRUE)
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else()
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set(BLAS_FOUND FALSE)
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endif()
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if(NOT BLAS_FIND_QUIETLY)
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if(BLAS_FOUND)
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message(STATUS "A library with BLAS API found.")
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else(BLAS_FOUND)
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if(BLAS_FIND_REQUIRED)
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message(FATAL_ERROR "A required library with BLAS API not found. Please specify library location.")
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else()
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message(STATUS "A library with BLAS API not found. Please specify library location.")
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endif()
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endif(BLAS_FOUND)
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endif(NOT BLAS_FIND_QUIETLY)
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# Add variables to cache
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set( BLAS_INCLUDE_DIR "${BLAS_INCLUDE_DIR}"
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CACHE PATH "Directories containing the BLAS header files" FORCE )
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set( BLAS_DEFINITIONS "${BLAS_DEFINITIONS}"
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CACHE STRING "Compilation options to use BLAS" FORCE )
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set( BLAS_LINKER_FLAGS "${BLAS_LINKER_FLAGS}"
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CACHE STRING "Linker flags to use BLAS" FORCE )
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set( BLAS_LIBRARIES "${BLAS_LIBRARIES}"
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CACHE FILEPATH "BLAS libraries name" FORCE )
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set( BLAS_LIBRARIES_DIR "${BLAS_LIBRARIES_DIR}"
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CACHE PATH "Directories containing the BLAS libraries" FORCE )
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#message("DEBUG: BLAS_INCLUDE_DIR = ${BLAS_INCLUDE_DIR}")
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#message("DEBUG: BLAS_DEFINITIONS = ${BLAS_DEFINITIONS}")
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#message("DEBUG: BLAS_LINKER_FLAGS = ${BLAS_LINKER_FLAGS}")
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#message("DEBUG: BLAS_LIBRARIES = ${BLAS_LIBRARIES}")
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#message("DEBUG: BLAS_LIBRARIES_DIR = ${BLAS_LIBRARIES_DIR}")
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#message("DEBUG: BLAS_FOUND = ${BLAS_FOUND}")
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endif(BLAS_LIBRARIES_DIR OR BLAS_LIBRARIES)
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