Modules/FindLAPACK.cmake

   1 # - Find LAPACK library
   2 # This module finds an installed fortran library that implements the LAPACK
   3 # linear-algebra interface (see http://www.netlib.org/lapack/).
   4 #
   5 # The approach follows that taken for the autoconf macro file, acx_lapack.m4
   6 # (distributed at http://ac-archive.sourceforge.net/ac-archive/acx_lapack.html).
   7 #
   8 # This module sets the following variables:
   9 #  LAPACK_FOUND - set to true if a library implementing the LAPACK interface
  10 #    is found
  11 #  LAPACK_LINKER_FLAGS - uncached list of required linker flags (excluding -l
  12 #    and -L).
  13 #  LAPACK_LIBRARIES - uncached list of libraries (using full path name) to
  14 #    link against to use LAPACK
  15 #  LAPACK95_LIBRARIES - uncached list of libraries (using full path name) to
  16 #    link against to use LAPACK95
  17 #  LAPACK95_FOUND - set to true if a library implementing the LAPACK f95
  18 #    interface is found
  19 #  BLA_STATIC  if set on this determines what kind of linkage we do (static)
  20 #  BLA_VENDOR  if set checks only the specified vendor, if not set checks
  21 #     all the possibilities
  22 #  BLA_F95     if set on tries to find the f95 interfaces for BLAS/LAPACK
  23 ### List of vendors (BLA_VENDOR) valid in this module
  24 ##  Intel(mkl), ACML,Apple, NAS, Generic
  25 get_property(_LANGUAGES_ GLOBAL PROPERTY ENABLED_LANGUAGES)
  26 if(NOT _LANGUAGES_ MATCHES Fortran)
  27   if(LAPACK_FIND_REQUIRED)
  28     message(FATAL_ERROR
  29       "FindLAPACK is Fortran-only so Fortran must be enabled.")
  30   else(LAPACK_FIND_REQUIRED)
  31     message(STATUS "Looking for LAPACK... - NOT found (Fortran not enabled)")
  32     return()
  33   endif(LAPACK_FIND_REQUIRED)
  34 endif(NOT _LANGUAGES_ MATCHES Fortran)
  35
  36 include(CheckFortranFunctionExists)
  37 set(LAPACK_FOUND FALSE)
  38 set(LAPACK95_FOUND FALSE)
  39
  40 macro(Check_Lapack_Libraries LIBRARIES _prefix _name _flags _list _blas _threads)
  41 # This macro checks for the existence of the combination of fortran libraries
  42 # given by _list.  If the combination is found, this macro checks (using the
  43 # Check_Fortran_Function_Exists macro) whether can link against that library
  44 # combination using the name of a routine given by _name using the linker
  45 # flags given by _flags.  If the combination of libraries is found and passes
  46 # the link test, LIBRARIES is set to the list of complete library paths that
  47 # have been found.  Otherwise, LIBRARIES is set to FALSE.
  48
  49 # N.B. _prefix is the prefix applied to the names of all cached variables that
  50 # are generated internally and marked advanced by this macro.
  51
  52 set(_libraries_work TRUE)
  53 set(${LIBRARIES})
  54 set(_combined_name)
  55 foreach(_library ${_list})
  56   set(_combined_name ${_combined_name}_${_library})
  57
  58   if(_libraries_work)
  59   IF (WIN32)
  60     if(BLA_STATIC)
  61       set(CMAKE_FIND_LIBRARY_SUFFIXES ".lib;.dll")
  62     endif(BLA_STATIC)
  63     find_library(${_prefix}_${_library}_LIBRARY
  64     NAMES ${_library}
  65     PATHS ENV LIB
  66     )
  67   ENDIF (WIN32)
  68
  69   if(APPLE)
  70     if(BLA_STATIC)
  71       set(CMAKE_FIND_LIBRARY_SUFFIXES ".a;.so;.dylib")
  72     endif(BLA_STATIC)
  73     find_library(${_prefix}_${_library}_LIBRARY
  74     NAMES ${_library}
  75     PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV DYLD_LIBRARY_PATH
  76     )
  77     else(APPLE)
  78     if(BLA_STATIC)
  79      set(CMAKE_FIND_LIBRARY_SUFFIXES ".a;.so")
  80     endif(BLA_STATIC)
  81     find_library(${_prefix}_${_library}_LIBRARY
  82     NAMES ${_library}
  83     PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV LD_LIBRARY_PATH
  84     )
  85     endif(APPLE)
  86
  87     mark_as_advanced(${_prefix}_${_library}_LIBRARY)
  88     set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
  89     set(_libraries_work ${${_prefix}_${_library}_LIBRARY})
  90   endif(_libraries_work)
  91 endforeach(_library ${_list})
  92
  93 if(_libraries_work)
  94   # Test this combination of libraries.
  95   if(UNIX AND BLA_STATIC)
  96     set(CMAKE_REQUIRED_LIBRARIES ${_flags} "-Wl,--start-group ${${LIBRARIES}} ${_blas};-Wl,--end-group" ${_threads})
  97   else(UNIX AND BLA_STATIC)
  98     set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}} ${_blas} ${_threads})
  99   endif(UNIX AND BLA_STATIC)
 100 #  message("DEBUG: CMAKE_REQUIRED_LIBRARIES = ${CMAKE_REQUIRED_LIBRARIES}")
 101   check_fortran_function_exists(${_name} ${_prefix}${_combined_name}_WORKS)
 102   set(CMAKE_REQUIRED_LIBRARIES)
 103   mark_as_advanced(${_prefix}${_combined_name}_WORKS)
 104   set(_libraries_work ${${_prefix}${_combined_name}_WORKS})
 105   #message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")
 106 endif(_libraries_work)
 107
 108  if(_libraries_work)
 109    set(${LIBRARIES} ${${LIBRARIES}} ${_blas})
 110  else(_libraries_work)
 111     set(${LIBRARIES} FALSE)
 112  endif(_libraries_work)
 113
 114 endmacro(Check_Lapack_Libraries)
 115
 116
 117 set(LAPACK_LINKER_FLAGS)
 118 set(LAPACK_LIBRARIES)
 119 set(LAPACK95_LIBRARIES)
 120
 121
 122 if(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
 123   find_package(BLAS)
 124 else(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
 125   find_package(BLAS REQUIRED)
 126 endif(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
 127
 128
 129 if(BLAS_FOUND)
 130   set(LAPACK_LINKER_FLAGS ${BLAS_LINKER_FLAGS})
 131   if ($ENV{BLA_VENDOR} MATCHES ".+")
 132     set(BLA_VENDOR $ENV{BLA_VENDOR})
 133   else ($ENV{BLA_VENDOR} MATCHES ".+")
 134     if(NOT BLA_VENDOR)
 135       set(BLA_VENDOR "All")
 136     endif(NOT BLA_VENDOR)
 137   endif ($ENV{BLA_VENDOR} MATCHES ".+")
 138 #acml lapack
 139  if (BLA_VENDOR STREQUAL "ACML" OR BLA_VENDOR STREQUAL "All")
 140   if(NOT LAPACK_LIBRARIES)
 141    check_lapack_libraries(
 142     LAPACK_LIBRARIES
 143     LAPACK
 144     cheev
 145     ""
 146     "acml"
 147     ""
 148     ""
 149     )
 150   endif(NOT LAPACK_LIBRARIES)
 151  endif (BLA_VENDOR STREQUAL "ACML" OR BLA_VENDOR STREQUAL "All")
 152
 153 # Apple LAPACK library?
 154 if (BLA_VENDOR STREQUAL "Apple" OR BLA_VENDOR STREQUAL "All")
 155  if(NOT LAPACK_LIBRARIES)
 156   check_lapack_libraries(
 157   LAPACK_LIBRARIES
 158   LAPACK
 159   cheev
 160   ""
 161   "Accelerate"
 162   "${BLAS_LIBRARIES}"
 163   ""
 164   )
 165  endif(NOT LAPACK_LIBRARIES)
 166 endif (BLA_VENDOR STREQUAL "Apple" OR BLA_VENDOR STREQUAL "All")
 167 if (BLA_VENDOR STREQUAL "NAS" OR BLA_VENDOR STREQUAL "All")
 168   if ( NOT LAPACK_LIBRARIES )
 169     check_lapack_libraries(
 170     LAPACK_LIBRARIES
 171     LAPACK
 172     cheev
 173     ""
 174     "vecLib"
 175     "${BLAS_LIBRARIES}"
 176     ""
 177     )
 178   endif ( NOT LAPACK_LIBRARIES )
 179 endif (BLA_VENDOR STREQUAL "NAS" OR BLA_VENDOR STREQUAL "All")
 180 # Generic LAPACK library?
 181 if (BLA_VENDOR STREQUAL "Generic" OR BLA_VENDOR STREQUAL "All")
 182   if ( NOT LAPACK_LIBRARIES )
 183     check_lapack_libraries(
 184     LAPACK_LIBRARIES
 185     LAPACK
 186     cheev
 187     ""
 188     "lapack"
 189     "${BLAS_LIBRARIES}"
 190     ""
 191     )
 192   endif ( NOT LAPACK_LIBRARIES )
 193 endif (BLA_VENDOR STREQUAL "Generic" OR BLA_VENDOR STREQUAL "All")
 194 #intel lapack
 195  if (BLA_VENDOR MATCHES "Intel*" OR BLA_VENDOR STREQUAL "All")
 196   if (_LANGUAGES_ MATCHES C OR _LANGUAGES_ MATCHES CXX)
 197    if(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
 198       find_PACKAGE(Threads)
 199    else(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
 200        find_package(Threads REQUIRED)
 201    endif(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
 202    if (BLA_F95)
 203     if(NOT LAPACK95_LIBRARIES)
 204      check_lapack_libraries(
 205      LAPACK95_LIBRARIES
 206      LAPACK
 207      cheev
 208      ""
 209      "mkl_lapack95"
 210      "${BLAS95_LIBRARIES}"
 211      "${CMAKE_THREAD_LIBS_INIT}"
 212      )
 213     endif(NOT LAPACK95_LIBRARIES)
 214    else(BLA_F95)
 215     if(NOT LAPACK_LIBRARIES)
 216      check_lapack_libraries(
 217      LAPACK_LIBRARIES
 218      LAPACK
 219      cheev
 220      ""
 221      "mkl_lapack"
 222      "${BLAS_LIBRARIES}"
 223      "${CMAKE_THREAD_LIBS_INIT}"
 224      )
 225     endif(NOT LAPACK_LIBRARIES)
 226    endif(BLA_F95)
 227   endif (_LANGUAGES_ MATCHES C OR _LANGUAGES_ MATCHES CXX)
 228  endif(BLA_VENDOR MATCHES "Intel*" OR BLA_VENDOR STREQUAL "All")
 229 else(BLAS_FOUND)
 230   message(STATUS "LAPACK requires BLAS")
 231 endif(BLAS_FOUND)
 232
 233 if(BLA_F95)
 234  if(LAPACK95_LIBRARIES)
 235   set(LAPACK95_FOUND TRUE)
 236  else(LAPACK95_LIBRARIES)
 237   set(LAPACK95_FOUND FALSE)
 238  endif(LAPACK95_LIBRARIES)
 239  if(NOT LAPACK_FIND_QUIETLY)
 240   if(LAPACK95_FOUND)
 241     message(STATUS "A library with LAPACK95 API found.")
 242   else(LAPACK95_FOUND)
 243     if(LAPACK_FIND_REQUIRED)
 244       message(FATAL_ERROR
 245       "A required library with LAPACK95 API not found. Please specify library location."
 246       )
 247     else(LAPACK_FIND_REQUIRED)
 248       message(STATUS
 249       "A library with LAPACK95 API not found. Please specify library location."
 250       )
 251     endif(LAPACK_FIND_REQUIRED)
 252   endif(LAPACK95_FOUND)
 253  endif(NOT LAPACK_FIND_QUIETLY)
 254  set(LAPACK_FOUND "${LAPACK95_FOUND}")
 255  set(LAPACK_LIBRARIES "${LAPACK95_LIBRARIES}")
 256 else(BLA_F95)
 257  if(LAPACK_LIBRARIES)
 258   set(LAPACK_FOUND TRUE)
 259  else(LAPACK_LIBRARIES)
 260   set(LAPACK_FOUND FALSE)
 261  endif(LAPACK_LIBRARIES)
 262
 263  if(NOT LAPACK_FIND_QUIETLY)
 264   if(LAPACK_FOUND)
 265     message(STATUS "A library with LAPACK API found.")
 266   else(LAPACK_FOUND)
 267     if(LAPACK_FIND_REQUIRED)
 268       message(FATAL_ERROR
 269       "A required library with LAPACK API not found. Please specify library location."
 270       )
 271     else(LAPACK_FIND_REQUIRED)
 272       message(STATUS
 273       "A library with LAPACK API not found. Please specify library location."
 274       )
 275     endif(LAPACK_FIND_REQUIRED)
 276   endif(LAPACK_FOUND)
 277  endif(NOT LAPACK_FIND_QUIETLY)
 278 endif(BLA_F95)