CMake/Modules/FindLAPACK.cmake

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