[CMake] FindBLAS/LAPACK, FindGLUT/F90GL

Alin M Elena alin.elena at qub.ac.uk
Mon Aug 27 12:23:08 EDT 2007


Hi,


Here I add modified versions of FindBlas and FindLapack, posted by Alan 
Irwin some time ago. I tested them on linux and mac os and they seem to 
work.

I also add the FindGLUT module a little bit changed to work when the 
libs are installed in non-standard places.
If you want to use f90gl (http://math.nist.gov/f90gl/), I created a 
module for that too. (FindF90GL)

Hope they help,

Alin

PS I have also added the the CheckFortranFunctionExists (needed by 
FindBLAS/LAPACK)



-- 
____________________________________________________________________
"...if the universities will not study useless subjects, who will?"
                           G. F. Fitzgerald, Nature, 45/46, 392 (1892)
______________________________________________________________________
Mr. Alin M. ELENA
Atomistic Simulation Centre
School of Mathematics and Physics
Queen's University Belfast
Office: +44 (0)28 9097 1428
Fax: +44 (0)28 9097 5359
http://titus.phy.qub.ac.uk/group/Alin/
alin.elena at yahoo.co.uk
alin.elena at qub.ac.uk
______________________________________________________________________

-------------- next part --------------
# - Check if the Fortran function exists.
# CHECK_FORTRAN_FUNCTION_EXISTS(FUNCTION VARIABLE)
# - macro which checks if the Fortran function exists
#  FUNCTION - the name of the Fortran function
#  VARIABLE - variable to store the result
#
# The following variables may be set before calling this macro to
# modify the way the check is run:
#
#  CMAKE_REQUIRED_LIBRARIES = list of libraries to link

macro(CHECK_FORTRAN_FUNCTION_EXISTS FUNCTION VARIABLE)
  if(NOT DEFINED ${VARIABLE})
    message(STATUS "Looking for Fortran ${FUNCTION}")
    if(CMAKE_REQUIRED_LIBRARIES)
      set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
    else(CMAKE_REQUIRED_LIBRARIES)
      set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES)
    endif(CMAKE_REQUIRED_LIBRARIES)
    FILE(WRITE
    ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f
    "
      program TESTFortran
      external ${FUNCTION}
      end
    "
    )
    try_compile(${VARIABLE}
    ${CMAKE_BINARY_DIR}
    ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f
    CMAKE_FLAGS "${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}"
    OUTPUT_VARIABLE OUTPUT
    )
    if(${VARIABLE})
      set(${VARIABLE} 1 CACHE INTERNAL "Have Fortran function ${FUNCTION}")
      message(STATUS "Looking for Fortran ${FUNCTION} - found")
      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log 
        "Determining if the Fortran ${FUNCTION} exists passed with the following output:\n"
        "${OUTPUT}\n\n")
    else(${VARIABLE})
      message(STATUS "Looking for Fortran ${FUNCTION} - not found")
      set(${VARIABLE} "" CACHE INTERNAL "Have Fortran function ${FUNCTION}")
      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log 
        "Determining if the Fortran ${FUNCTION} exists failed with the following output:\n"
        "${OUTPUT}\n\n")
    endif(${VARIABLE})
  endif(NOT DEFINED ${VARIABLE})
endmacro(CHECK_FORTRAN_FUNCTION_EXISTS)
-------------- next part --------------
# - 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_LINKER_FLAGS - uncached list of required linker flags (excluding -l
#    and -L).
#  BLAS_LIBRARIES - uncached list of libraries (using full path name) to 
#    link against to use BLAS
#

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 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.

set(_libraries_work TRUE)
set(${LIBRARIES})
set(_combined_name)
foreach(_library ${_list})
  set(_combined_name ${_combined_name}_${_library})

  if(_libraries_work)
    
    if ( APPLE ) 
    find_library(${_prefix}_${_library}_LIBRARY
    NAMES ${_library}
    PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV DYLD_LIBRARY_PATH 
    )
   
    else ( APPLE )
    find_library(${_prefix}_${_library}_LIBRARY
    NAMES ${_library}
    PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV LD_LIBRARY_PATH 
    )
endif( APPLE )
    mark_as_advanced(${_prefix}_${_library}_LIBRARY)
    set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
    set(_libraries_work ${${_prefix}_${_library}_LIBRARY})
  endif(_libraries_work)
endforeach(_library ${_list})
if(_libraries_work)
  # Test this combination of libraries.
  set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
  #message("DEBUG: CMAKE_REQUIRED_LIBRARIES = ${CMAKE_REQUIRED_LIBRARIES}")
  check_fortran_function_exists(${_name} ${_prefix}${_combined_name}_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} FALSE)
endif(NOT _libraries_work)
#message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")
endmacro(Check_Fortran_Libraries)

set(BLAS_LINKER_FLAGS)
set(BLAS_LIBRARIES)



if(NOT BLAS_LIBRARIES)
  # BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  cblas_dgemm
  ""
  "cblas;f77blas;atlas"
  )
endif(NOT BLAS_LIBRARIES)

# BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "sgemm;dgemm;blas"
  )
endif(NOT BLAS_LIBRARIES)

# BLAS in Alpha CXML library?
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "cxml"
  )
endif(NOT BLAS_LIBRARIES)

# BLAS in Alpha DXML library? (now called CXML, see above)
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "dxml"
  )
endif(NOT BLAS_LIBRARIES)

# BLAS in Sun Performance library?
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  "-xlic_lib=sunperf"
  "sunperf;sunmath"
  )
  if(BLAS_LIBRARIES)
    set(BLAS_LINKER_FLAGS "-xlic_lib=sunperf")
  endif(BLAS_LIBRARIES)
  
endif(NOT BLAS_LIBRARIES)

# BLAS in SCSL library?  (SGI/Cray Scientific Library)
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "scsl"
  )
endif(NOT BLAS_LIBRARIES)

# BLAS in SGIMATH library?
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "complib.sgimath"
  )
endif(NOT BLAS_LIBRARIES)

# BLAS in IBM ESSL library? (requires generic BLAS lib, too)
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "essl;blas"
  )
endif(NOT BLAS_LIBRARIES)



#BLAS in intel mkl library? (static, 32bit)
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "mkl_ia32;guide;pthread"
  )
endif(NOT BLAS_LIBRARIES)

#BLAS in intel mkl library? (static, 64bit, em64t)
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "mkl_em64t;guide;pthread"
  )
endif(NOT BLAS_LIBRARIES)


# BLAS in intel mkl library? (shared)
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "mkl;guide;pthread"
  )
endif(NOT BLAS_LIBRARIES)




# Apple BLAS library?
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  cblas_dgemm
  ""
  "Accelerate"
  )
  
  endif(NOT BLAS_LIBRARIES)
  
  if ( NOT BLAS_LIBRARIES )
    check_fortran_libraries(
    BLAS_LIBRARIES
    BLAS
    cblas_dgemm
    ""
    "vecLib"
    )
  endif ( NOT BLAS_LIBRARIES )


# Generic BLAS library?
if(NOT BLAS_LIBRARIES)
  check_fortran_libraries(
  BLAS_LIBRARIES
  BLAS
  sgemm
  ""
  "blas"
  )
endif(NOT BLAS_LIBRARIES)


if(BLAS_LIBRARIES)
  set(BLAS_FOUND TRUE)
else(BLAS_LIBRARIES)
  set(BLAS_FOUND FALSE)
endif(BLAS_LIBRARIES)

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(BLAS_FIND_REQUIRED)
      message(STATUS
      "A library with BLAS API not found. Please specify library location."
      )
    endif(BLAS_FIND_REQUIRED)
  endif(BLAS_FOUND)
endif(NOT BLAS_FIND_QUIETLY)
-------------- next part --------------
# - Find F90GL library
# This module finds an installed fortran library that implements the GL(U/UT) 
#
# This module sets the following variables:
#  F90GL_FOUND - set to true if a library implementing the F90GB interface
#    is found
#  F90GL_LIBRARIES - uncached list of libraries (using full path name) to 
#    link against to use F90GL
#  F90GL_INCLUDE_DIR

macro(Check_F90GL_Libraries LIBRARIES _prefix  _incdir _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 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.

set(_libraries_work TRUE)
set(${LIBRARIES})
set(_combined_name)
foreach(_library ${_list})
  set(_combined_name ${_combined_name}_${_library})

  if(_libraries_work)
    
    if ( APPLE ) 
    find_library(${_prefix}_${_library}_LIBRARY
    NAMES ${_library}
    PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV DYLD_LIBRARY_PATH 
    )
   
    else ( APPLE )
    find_library(${_prefix}_${_library}_LIBRARY
    NAMES ${_library}
    PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV LD_LIBRARY_PATH 
    )
endif( APPLE )
    mark_as_advanced(${_prefix}_${_library}_LIBRARY)
    set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
    set(_libraries_work ${${_prefix}_${_library}_LIBRARY})
  endif(_libraries_work)
endforeach(_library ${_list})
 if(_libraries_work)
 FIND_PATH( ${_incdir}  opengl_gl.mod
      /usr/include
      ENV INCLUDE
    )
    endif(_libraries_work)  
if(NOT _libraries_work)
  set(${LIBRARIES} FALSE)
endif(NOT _libraries_work)
#message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")
endmacro(Check_F90GL_Libraries)

set(F90GL_LIBRARIES)
set(F90GL_INCLUDE_DIR)


if(NOT F90GL_LIBRARIES)
    check_f90gl_libraries(
  F90GL_LIBRARIES
  F90GL
  F90GL_INCLUDE_DIR
  ""
  "f90glut;f90GLU;f90GL"
  )
endif(NOT F90GL_LIBRARIES)


if(F90GL_LIBRARIES)
  set(F90GL_FOUND TRUE)
else(F90GL_LIBRARIES)
  set(F90GL_FOUND FALSE)
endif(F90GL_LIBRARIES)

if(NOT F90GL_FIND_QUIETLY)
  if(F90GL_FOUND)
    message(STATUS "A library with F90GL API found.")
  else(F90GL_FOUND)
    if(F90GL_FIND_REQUIRED)
      message(FATAL_ERROR 
      "A required library with F90GL API not found. Please specify library location."
      )
    else(F90GL_FIND_REQUIRED)
      message(STATUS
      "A library with F90GL API not found. Please specify library location."
      )
    endif(F90GL_FIND_REQUIRED)
  endif(F90GL_FOUND)
endif(NOT F90GL_FIND_QUIETLY)
-------------- next part --------------
# - try to find glut library and include files
#  GLUT_INCLUDE_DIR, where to find GL/glut.h, etc.
#  GLUT_LIBRARIES, the libraries to link against
#  GLUT_FOUND, If false, do not try to use GLUT.
# Also defined, but not for general use are:
#  GLUT_glut_LIBRARY = the full path to the glut library.
#  GLUT_Xmu_LIBRARY  = the full path to the Xmu library.
#  GLUT_Xi_LIBRARY   = the full path to the Xi Library.

IF (WIN32)

  IF(CYGWIN)

    FIND_PATH( GLUT_INCLUDE_DIR GL/glut.h
      /usr/include
    )

    FIND_LIBRARY( GLUT_glut_LIBRARY glut32
      ${OPENGL_LIBRARY_DIR}
      /usr/lib
      /usr/lib/w32api
      /usr/local/lib
      /usr/X11R6/lib
    )


  ELSE(CYGWIN)

    FIND_PATH( GLUT_INCLUDE_DIR GL/glut.h
      ${GLUT_ROOT_PATH}/include
    )

    FIND_LIBRARY( GLUT_glut_LIBRARY glut
      ${GLUT_ROOT_PATH}/Release
      ${OPENGL_LIBRARY_DIR}
    )

  ENDIF(CYGWIN)

ELSE (WIN32)

  IF (APPLE)
# These values for Apple could probably do with improvement.
    FIND_PATH( GLUT_INCLUDE_DIR glut.h
      /System/Library/Frameworks/GLUT.framework/Versions/A/Headers
      ${OPENGL_LIBRARY_DIR}
    )
    SET(GLUT_glut_LIBRARY "-framework GLUT" CACHE STRING "GLUT library for OSX") 
    SET(GLUT_cocoa_LIBRARY "-framework Cocoa" CACHE STRING "Cocoa framework for OSX")
  ELSE (APPLE)

    FIND_PATH( GLUT_INCLUDE_DIR GL/glut.h
      /usr/include
      /usr/include/GL
      /usr/local/include
      /usr/openwin/share/include
      /usr/openwin/include
      /usr/X11R6/include
      /usr/include/X11
      /opt/graphics/OpenGL/include
      /opt/graphics/OpenGL/contrib/libglut
      ENV INCLUDE
    )

    FIND_LIBRARY( GLUT_glut_LIBRARY glut
      /usr/lib
      /usr/local/lib
      /usr/openwin/lib
      /usr/X11R6/lib
      ENV LD_LIBRARY_PATH
    )

    FIND_LIBRARY( GLUT_Xi_LIBRARY Xi
      /usr/lib
      /usr/local/lib
      /usr/openwin/lib
      /usr/X11R6/lib
      ENV LD_LIBRARY_PATH
    )

    FIND_LIBRARY( GLUT_Xmu_LIBRARY Xmu
      /usr/lib
      /usr/local/lib
      /usr/openwin/lib
      /usr/X11R6/lib
	ENV LD_LIBRARY_PATH
    )

  ENDIF (APPLE)

ENDIF (WIN32)

SET( GLUT_FOUND "NO" )
IF(GLUT_INCLUDE_DIR)
  IF(GLUT_glut_LIBRARY)
    # Is -lXi and -lXmu required on all platforms that have it?
    # If not, we need some way to figure out what platform we are on.
    SET( GLUT_LIBRARIES
      ${GLUT_glut_LIBRARY}
      ${GLUT_Xmu_LIBRARY}
      ${GLUT_Xi_LIBRARY} 
      ${GLUT_cocoa_LIBRARY}
    )
    SET( GLUT_FOUND "YES" )

#The following deprecated settings are for backwards compatibility with CMake1.4
    SET (GLUT_LIBRARY ${GLUT_LIBRARIES})
    SET (GLUT_INCLUDE_PATH ${GLUT_INCLUDE_DIR})

  ENDIF(GLUT_glut_LIBRARY)
ENDIF(GLUT_INCLUDE_DIR)

MARK_AS_ADVANCED(
  GLUT_INCLUDE_DIR
  GLUT_glut_LIBRARY
  GLUT_Xmu_LIBRARY
  GLUT_Xi_LIBRARY
)
-------------- next part --------------
# - Find LAPACK library
# This module finds an installed fortran library that implements the LAPACK
# linear-algebra interface (see http://www.netlib.org/lapack/).
#
# The approach follows that taken for the autoconf macro file, acx_lapack.m4
# (distributed at http://ac-archive.sourceforge.net/ac-archive/acx_lapack.html).
#
# This module sets the following variables:
#  LAPACK_FOUND - set to true if a library implementing the LAPACK interface
#    is found
#  LAPACK_LINKER_FLAGS - uncached list of required linker flags (excluding -l
#    and -L).
#  LAPACK_LIBRARIES - uncached list of libraries (using full path name) to 
#    link against to use LAPACK
#

include(CheckFortranFunctionExists)
set(LAPACK_FOUND FALSE)

macro(Check_Lapack_Libraries LIBRARIES _prefix _name _flags _list _blas)
# 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 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.

set(_libraries_work TRUE)
set(${LIBRARIES})
set(_combined_name)
foreach(_library ${_list})
  set(_combined_name ${_combined_name}_${_library})

  if(_libraries_work)
  if(APPLE)
    find_library(${_prefix}_${_library}_LIBRARY
    NAMES ${_library}
    PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV DYLD_LIBRARY_PATH
    )
    else(APPLE)
        find_library(${_prefix}_${_library}_LIBRARY
    NAMES ${_library}
    PATHS /usr/local/lib /usr/lib /usr/local/lib64 /usr/lib64 ENV LD_LIBRARY_PATH
    )
    endif(APPLE)

    mark_as_advanced(${_prefix}_${_library}_LIBRARY)
    set(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
    set(_libraries_work ${${_prefix}_${_library}_LIBRARY})
  endif(_libraries_work)
endforeach(_library ${_list})

if(_libraries_work)
  # Test this combination of libraries.
  set(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}} ${_blas})
  #message("DEBUG: CMAKE_REQUIRED_LIBRARIES = ${CMAKE_REQUIRED_LIBRARIES}")
  check_fortran_function_exists(${_name} ${_prefix}${_combined_name}_WORKS)
  set(CMAKE_REQUIRED_LIBRARIES)
  mark_as_advanced(${_prefix}${_combined_name}_WORKS)
  set(_libraries_work ${${_prefix}${_combined_name}_WORKS})
#message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")
endif(_libraries_work)

if(NOT _libraries_work)
  set(${LIBRARIES} FALSE)
endif(NOT _libraries_work)
#message("DEBUG: ${LIBRARIES} = ${${LIBRARIES}}")
endmacro(Check_Lapack_Libraries)


set(LAPACK_LINKER_FLAGS)
set(LAPACK_LIBRARIES)


if(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
  find_package(BLAS)
else(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
  find_package(BLAS REQUIRED)
endif(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)

if(BLAS_FOUND)
  set(LAPACK_LINKER_FLAGS ${BLAS_LINKER_FLAGS})

#intel lapack
  if(NOT LAPACK_LIBRARIES)

  check_lapack_libraries(
  LAPACK_LIBRARIES
  LAPACK
  cheev
  ""
  "mkl_lapack"
 "${BLAS_LIBRARIES}"
  )
  endif(NOT LAPACK_LIBRARIES)



  # Generic LAPACK library?

# Apple LAPACK library?
if(NOT LAPACK_LIBRARIES)
  check_lapack_libraries(
  LAPACK_LIBRARIES
  LAPACK
  cheev
  ""
  "Accelerate"
  "${BLAS_LIBRARIES}"
  )
  endif(NOT LAPACK_LIBRARIES)
  
  if ( NOT LAPACK_LIBRARIES )
    check_lapack_libraries(
    LAPACK_LIBRARIES
    LAPACK
    cheev
    ""
    "vecLib"
    "${BLAS_LIBRARIES}"
    )
  endif ( NOT LAPACK_LIBRARIES )

  if ( NOT LAPACK_LIBRARIES )
    check_lapack_libraries(
    LAPACK_LIBRARIES
    LAPACK
    cheev
    ""
    "lapack"
    "${BLAS_LIBRARIES}"
    )
  endif ( NOT LAPACK_LIBRARIES )

else(BLAS_FOUND)
  message(STATUS "LAPACK requires BLAS")
endif(BLAS_FOUND)

if(LAPACK_LIBRARIES)
  set(LAPACK_FOUND TRUE)
else(LAPACK_LIBRARIES)
  set(LAPACK_FOUND FALSE)
endif(LAPACK_LIBRARIES)

if(NOT LAPACK_FIND_QUIETLY)
  if(LAPACK_FOUND)
    message(STATUS "A library with LAPACK API found.")
  else(LAPACK_FOUND)
    if(LAPACK_FIND_REQUIRED)
      message(FATAL_ERROR 
      "A required library with LAPACK API not found. Please specify library location."
      )
    else(LAPACK_FIND_REQUIRED)
      message(STATUS
      "A library with LAPACK API not found. Please specify library location."
      )
    endif(LAPACK_FIND_REQUIRED)
  endif(LAPACK_FOUND)
endif(NOT LAPACK_FIND_QUIETLY)
-------------- next part --------------
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