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nux-spring/CMakeModules/FindFFTW.cmake
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ext-colombo_a 3081060553 Initial commit
2024-10-24 18:52:35 +02:00

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###
#
# @copyright (c) 2009-2014 The University of Tennessee and The University
# of Tennessee Research Foundation.
# All rights reserved.
# @copyright (c) 2012-2015 Inria. All rights reserved.
# @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
#
###
#
# - Find FFTW Version 3 include dirs and libraries
# Default configuration will find the real double precision fftw library version
# without THREADS|OMP.
# Use this module by invoking find_package with the form:
# find_package(FFTW
# [REQUIRED] # Fail with error if fftw is not found
# [COMPONENTS MKL]
#
# COMPONENTS can be some of the following:
# - MKL: to detect the FFTW from Intel MKL
# - ESSL: to detect the FFTW from IBM ESSL
# - THREADS: to detect the Threads version of FFTW
# - OMP: to detect the OpenMP version of FFTW
# - SIMPLE: to detect the FFTW simple precision fftw3f
# - LONG: to detect the FFTW long double precision fftw3l
# - QUAD: to detect the FFTW quadruple precision fftw3q
#
# This module finds headers and fftw library.
# Results are reported in variables:
# FFTW_FOUND - True if headers and requested libraries were found
# FFTW_C_FLAGS - list of required compilation flags (excluding -I)
# FFTW_LINKER_FLAGS - list of required linker flags (excluding -l and -L)
# FFTW_INCLUDE_DIRS - fftw include directories
# FFTW_LIBRARY_DIRS - Link directories for fftw libraries
# FFTW_LIBRARIES - fftw component libraries to be linked
# FFTW_INCLUDE_DIRS_DEP - fftw + dependencies include directories
# FFTW_LIBRARY_DIRS_DEP - fftw + dependencies link directories
# FFTW_LIBRARIES_DEP - fftw libraries + dependencies
#
# The user can give specific paths where to find the libraries adding cmake
# options at configure (ex: cmake path/to/project -DFFTW_DIR=path/to/fftw):
# FFTW_DIR - Where to find the base directory of fftw
# FFTW_INCDIR - Where to find the header files
# FFTW_LIBDIR - Where to find the library files
# The module can also look for the following environment variables if paths
# are not given as cmake variable: FFTW_DIR, FFTW_INCDIR, FFTW_LIBDIR
# For MKL case and if no paths are given as hints, we will try to use the MKLROOT
# environment variable
#=============================================================================
# Copyright 2012-2013 Inria
# Copyright 2012-2013 Emmanuel Agullo
# Copyright 2012-2013 Mathieu Faverge
# Copyright 2012 Cedric Castagnede
# Copyright 2013-2016 Florent Pruvost
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file MORSE-Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of Morse, substitute the full
# License text for the above reference.)
if (NOT FFTW_FOUND)
set(FFTW_DIR "" CACHE PATH "Installation directory of FFTW library given by user")
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "A cache variable, namely FFTW_DIR, has been set to specify the install directory of FFTW")
endif()
endif()
# Set the version to find
set(FFTW_LOOK_FOR_MKL OFF)
set(FFTW_LOOK_FOR_ESSL OFF)
set(FFTW_LOOK_FOR_THREADS OFF)
set(FFTW_LOOK_FOR_OMP OFF)
set(FFTW_LOOK_FOR_FFTW_SIMPLE OFF)
set(FFTW_LOOK_FOR_FFTW_LONG OFF)
set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
if( FFTW_FIND_COMPONENTS )
foreach( component ${FFTW_FIND_COMPONENTS} )
if (${component} STREQUAL "THREADS")
# means we look for the Threads version of FFTW
set(FFTW_LOOK_FOR_THREADS ON)
endif()
if (${component} STREQUAL "OMP")
# means we look for the OpenMP version of FFTW
set(FFTW_LOOK_FOR_OMP ON)
endif()
if (${component} STREQUAL "SIMPLE")
# means we look for FFTW simple precision (fftw3f)
set(FFTW_LOOK_FOR_FFTW_SIMPLE ON)
set(FFTW_LOOK_FOR_FFTW_LONG OFF)
set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
endif()
if (${component} STREQUAL "LONG")
# means we look for FFTW long double precision (fftw3l)
set(FFTW_LOOK_FOR_FFTW_SIMPLE OFF)
set(FFTW_LOOK_FOR_FFTW_LONG ON)
set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
endif()
if (${component} STREQUAL "QUAD")
# means we look for FFTW quad precision (fftw3q)
set(FFTW_LOOK_FOR_FFTW_SIMPLE OFF)
set(FFTW_LOOK_FOR_FFTW_LONG OFF)
set(FFTW_LOOK_FOR_FFTW_QUAD ON)
endif()
if (${component} STREQUAL "MKL")
# means we look for the Intel MKL version of FFTW
set(FFTW_LOOK_FOR_MKL ON)
if (FFTW_LOOK_FOR_FFTW_LONG)
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "Looking for FFTW -- long precision functions do not exist in MKL FFTW")
endif()
set(FFTW_LOOK_FOR_FFTW_LONG OFF)
endif()
if (FFTW_LOOK_FOR_FFTW_QUAD)
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "Looking for FFTW -- quadruple functions do not exist in MKL FFTW")
endif()
set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
endif()
endif()
if (${component} STREQUAL "ESSL")
# means we look for the Intel MKL version of FFTW
set(FFTW_LOOK_FOR_ESSL ON)
if (FFTW_LOOK_FOR_FFTW_LONG)
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "Looking for FFTW -- long precision functions do not exist in FFTW_ESSL")
endif()
set(FFTW_LOOK_FOR_FFTW_LONG OFF)
endif()
if (FFTW_LOOK_FOR_FFTW_QUAD)
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "Looking for FFTW -- quadruple functions do not exist in FFTW_ESSL")
endif()
set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
endif()
if (FFTW_LOOK_FOR_OMP)
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "Looking for FFTW -- FFTW_ESSL does not use OpenMP")
endif()
set(FFTW_LOOK_FOR_OMP OFF)
endif()
endif()
endforeach()
endif()
if (FFTW_LOOK_FOR_THREADS)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "FFTW looks for threads")
endif()
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_THREADS)
find_package(Threads REQUIRED)
else()
find_package(Threads)
endif()
endif()
if (FFTW_LOOK_FOR_OMP)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "FFTW looks for openmp")
endif()
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_OMP)
find_package(OpenMP REQUIRED)
else()
find_package(OpenMP)
endif()
endif()
if (FFTW_LOOK_FOR_MKL)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "FFTW looks for threads and Intel MKL")
endif()
if (FFTW_LOOK_FOR_THREADS)
set(BLA_VENDOR "Intel10_64lp")
else()
set(BLA_VENDOR "Intel10_64lp_seq")
endif()
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
find_package(Threads REQUIRED)
# find_package(BLASEXT REQUIRED)
else()
find_package(Threads)
# find_package(BLASEXT)
endif()
endif()
if (FFTW_LOOK_FOR_ESSL)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "FFTW looks for IBM ESSL")
endif()
if (FFTW_LOOK_FOR_THREADS)
set(BLA_VENDOR "IBMESSLMT")
else()
set(BLA_VENDOR "IBMESSL")
endif()
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_ESSL)
find_package(BLASEXT REQUIRED)
else()
find_package(BLASEXT)
endif()
endif()
set(ENV_FFTW_DIR "$ENV{FFTW_DIR}")
set(ENV_FFTW_INCDIR "$ENV{FFTW_INCDIR}")
set(ENV_FFTW_LIBDIR "$ENV{FFTW_LIBDIR}")
set(FFTW_GIVEN_BY_USER "FALSE")
if ( FFTW_DIR OR ( FFTW_INCDIR AND FFTW_LIBDIR) OR ENV_FFTW_DIR OR (ENV_FFTW_INCDIR AND ENV_FFTW_LIBDIR) )
set(FFTW_GIVEN_BY_USER "TRUE")
endif()
# Optionally use pkg-config to detect include/library dirs (if pkg-config is available)
# -------------------------------------------------------------------------------------
if (NOT FFTW_LOOK_FOR_MKL AND NOT FFTW_LOOK_FOR_ESSL)
include(FindPkgConfig)
find_package(PkgConfig QUIET)
if( PKG_CONFIG_EXECUTABLE AND NOT FFTW_GIVEN_BY_USER )
set(FFTW_INCLUDE_DIRS)
set(FFTW_LIBRARY_DIRS)
set(FFTW_LIBRARIES)
if(FFTW_LOOK_FOR_FFTW_SIMPLE)
pkg_search_module(FFTW3F fftw3f)
pkg_search_module(FFTW3 fftw3)
if (FFTW3F_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3F - found using PkgConfig")
endif()
if (FFTW3F_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${FFTW3F_LIBRARIES}")
endif()
if(FFTW3F_INCLUDE_DIRS)
list(APPEND FFTW_INCLUDE_DIRS "${FFTW3F_INCLUDE_DIRS}")
else()
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "FFTW3F_INCLUDE_DIRS is empty using PkgConfig."
"Perhaps the path to fftw3f headers is already present in your"
"CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
endif()
endif()
if(FFTW3F_LIBRARY_DIRS)
list(APPEND FFTW_LIBRARY_DIRS "${FFTW3F_LIBRARY_DIRS}")
endif()
else(FFTW3F_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3F - not found using PkgConfig."
"\n Perhaps you should add the directory containing fftw3f.pc to"
"\n the PKG_CONFIG_PATH environment variable.")
endif()
endif(FFTW3F_FOUND)
elseif(FFTW_LOOK_FOR_FFTW_LONG)
pkg_search_module(FFTW3L fftw3l)
pkg_search_module(FFTW3 fftw3)
if (FFTW3L_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3L - found using PkgConfig")
endif()
if (FFTW3L_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${FFTW3L_LIBRARIES}")
endif()
if(FFTW3L_INCLUDE_DIRS)
list(APPEND FFTW_INCLUDE_DIRS "${FFTW3L_INCLUDE_DIRS}")
else()
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "FFTW3L_INCLUDE_DIRS is empty using PkgConfig."
"Perhaps the path to fftw3l headers is already present in your"
"CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
endif()
endif()
if(FFTW3L_LIBRARY_DIRS)
list(APPEND FFTW_LIBRARY_DIRS "${FFTW3L_LIBRARY_DIRS}")
endif()
else(FFTW3L_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3L - not found using PkgConfig."
"\n Perhaps you should add the directory containing fftw3l.pc to"
"\n the PKG_CONFIG_PATH environment variable.")
endif()
endif(FFTW3L_FOUND)
elseif(FFTW_LOOK_FOR_FFTW_QUAD)
pkg_search_module(FFTW3Q fftw3q)
pkg_search_module(FFTW3 fftw3)
if (FFTW3Q_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3Q - found using PkgConfig")
endif()
if (FFTW3Q_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${FFTW3Q_LIBRARIES}")
endif()
if(FFTW3Q_INCLUDE_DIRS)
list(APPEND FFTW_INCLUDE_DIRS "${FFTW3Q_INCLUDE_DIRS}")
else()
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "FFTW3Q_INCLUDE_DIRS is empty using PkgConfig."
"Perhaps the path to fftw3q headers is already present in your"
"CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
endif()
endif()
if(FFTW3Q_LIBRARY_DIRS)
list(APPEND FFTW_LIBRARY_DIRS "${FFTW3Q_LIBRARY_DIRS}")
endif()
else(FFTW3Q_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3Q - not found using PkgConfig."
"\n Perhaps you should add the directory containing fftw3q.pc to"
"\n the PKG_CONFIG_PATH environment variable.")
endif()
endif(FFTW3Q_FOUND)
else()
pkg_search_module(FFTW3 fftw3)
endif()
if (FFTW3_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3 - found using PkgConfig")
endif()
if (FFTW3_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${FFTW3_LIBRARIES}")
endif()
if(FFTW3_INCLUDE_DIRS)
list(APPEND FFTW_INCLUDE_DIRS "${FFTW3_INCLUDE_DIRS}")
else()
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "FFTW3_INCLUDE_DIRS is empty using PkgConfig."
"Perhaps the path to fftw3 headers is already present in your"
"CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
endif()
endif()
if(FFTW3_LIBRARY_DIRS)
list(APPEND FFTW_LIBRARY_DIRS "${FFTW3_LIBRARY_DIRS}")
endif()
else(FFTW3_FOUND)
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW3 - not found using PkgConfig."
"\n Perhaps you should add the directory containing fftw3.pc to"
"\n the PKG_CONFIG_PATH environment variable.")
endif()
endif(FFTW3_FOUND)
set(FFTW_INCLUDE_DIRS_DEP "${FFTW_INCLUDE_DIRS}")
set(FFTW_LIBRARY_DIRS_DEP "${FFTW_LIBRARY_DIRS}")
set(FFTW_LIBRARIES_DEP "${FFTW_LIBRARIES}" )
if (FFTW_LIBRARIES)
set(FFTW_WORKS TRUE)
endif()
endif( PKG_CONFIG_EXECUTABLE AND NOT FFTW_GIVEN_BY_USER )
endif(NOT FFTW_LOOK_FOR_MKL AND NOT FFTW_LOOK_FOR_ESSL)
if( (NOT PKG_CONFIG_EXECUTABLE) OR
(PKG_CONFIG_EXECUTABLE AND NOT FFTW_FOUND) OR
FFTW_GIVEN_BY_USER OR
FFTW_LOOK_FOR_MKL OR
FFTW_LOOK_FOR_ESSL
)
# Looking for include
# -------------------
# Add system include paths to search include
# ------------------------------------------
unset(_inc_env)
set(ENV_MKLROOT "$ENV{MKLROOT}")
set(ENV_FFTW_DIR "$ENV{FFTW_DIR}")
set(ENV_FFTW_INCDIR "$ENV{FFTW_INCDIR}")
if(ENV_FFTW_INCDIR)
list(APPEND _inc_env "${ENV_FFTW_INCDIR}")
elseif(ENV_FFTW_DIR)
list(APPEND _inc_env "${ENV_FFTW_DIR}")
list(APPEND _inc_env "${ENV_FFTW_DIR}/include")
list(APPEND _inc_env "${ENV_FFTW_DIR}/include/fftw")
else()
if (ENV_MKLROOT)
list(APPEND _inc_env "${ENV_MKLROOT}/include/fftw")
endif()
# system variables
if(WIN32)
string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}")
list(APPEND _inc_env "${_path_env}")
else()
string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}")
list(APPEND _inc_env "${_path_env}")
string(REPLACE ":" ";" _path_env "$ENV{C_INCLUDE_PATH}")
list(APPEND _inc_env "${_path_env}")
string(REPLACE ":" ";" _path_env "$ENV{CPATH}")
list(APPEND _inc_env "${_path_env}")
string(REPLACE ":" ";" _path_env "$ENV{INCLUDE_PATH}")
list(APPEND _inc_env "${_path_env}")
endif()
endif()
list(APPEND _inc_env "${CMAKE_PLATFORM_IMPLICIT_INCLUDE_DIRECTORIES}")
list(APPEND _inc_env "${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}")
list(REMOVE_DUPLICATES _inc_env)
# set paths where to look for
set(PATH_TO_LOOK_FOR "${_inc_env}")
if (FFTW_LOOK_FOR_ESSL)
set(FFTW3_HEADER_TO_FIND "fftw3_essl.h")
else()
set(FFTW3_HEADER_TO_FIND "fftw3.h")
endif()
# Try to find the fftw header in the given paths
# -------------------------------------------------
# call cmake macro to find the header path
if(FFTW_INCDIR)
set(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS "FFTW_${FFTW3_HEADER_TO_FIND}_DIRS-NOTFOUND")
find_path(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS
NAMES ${FFTW3_HEADER_TO_FIND}
HINTS ${FFTW_INCDIR})
else()
if(FFTW_DIR)
set(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS "FFTW_${FFTW3_HEADER_TO_FIND}_DIRS-NOTFOUND")
find_path(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS
NAMES ${FFTW3_HEADER_TO_FIND}
HINTS ${FFTW_DIR}
PATH_SUFFIXES "include" "include/fftw")
else()
set(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS "FFTW_${FFTW3_HEADER_TO_FIND}_DIRS-NOTFOUND")
find_path(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS
NAMES ${FFTW3_HEADER_TO_FIND}
HINTS ${PATH_TO_LOOK_FOR}
PATH_SUFFIXES "fftw")
endif()
endif()
mark_as_advanced(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS)
# Add path to cmake variable
# ------------------------------------
if (FFTW_${FFTW3_HEADER_TO_FIND}_DIRS)
set(FFTW_INCLUDE_DIRS "${FFTW_${FFTW3_HEADER_TO_FIND}_DIRS}")
else ()
set(FFTW_INCLUDE_DIRS "FFTW_INCLUDE_DIRS-NOTFOUND")
if(NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW -- ${FFTW3_HEADER_TO_FIND} not found")
endif()
endif ()
# Looking for lib
# ---------------
# Add system library paths to search lib
# --------------------------------------
unset(_lib_env)
set(ENV_FFTW_LIBDIR "$ENV{FFTW_LIBDIR}")
if(ENV_FFTW_LIBDIR)
list(APPEND _lib_env "${ENV_FFTW_LIBDIR}")
elseif(ENV_FFTW_DIR)
list(APPEND _lib_env "${ENV_FFTW_DIR}")
list(APPEND _lib_env "${ENV_FFTW_DIR}/lib")
if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
list(APPEND _lib_env "${ENV_FFTW_DIR}/lib64")
list(APPEND _lib_env "${ENV_FFTW_DIR}/lib/intel64")
else()
list(APPEND _lib_env "${ENV_FFTW_DIR}/lib32")
list(APPEND _lib_env "${ENV_FFTW_DIR}/lib/ia32")
endif()
else()
if (ENV_MKLROOT)
list(APPEND _lib_env "${ENV_MKLROOT}/lib")
if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
list(APPEND _lib_env "${ENV_MKLROOT}/lib64")
list(APPEND _lib_env "${ENV_MKLROOT}/lib/intel64")
else()
list(APPEND _lib_env "${ENV_MKLROOT}/lib32")
list(APPEND _lib_env "${ENV_MKLROOT}/lib/ia32")
endif()
endif()
if(WIN32)
string(REPLACE ":" ";" _lib_env2 "$ENV{LIB}")
else()
if(APPLE)
string(REPLACE ":" ";" _lib_env2 "$ENV{DYLD_LIBRARY_PATH}")
else()
string(REPLACE ":" ";" _lib_env2 "$ENV{LD_LIBRARY_PATH}")
endif()
list(APPEND _lib_env "${_lib_env2}")
list(APPEND _lib_env "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}")
list(APPEND _lib_env "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}")
endif()
endif()
list(REMOVE_DUPLICATES _lib_env)
# set paths where to look for
set(PATH_TO_LOOK_FOR "${_lib_env}")
if(FFTW_LOOK_FOR_FFTW_SIMPLE)
set(FFTW_PREC "f")
set(FFTW_PREC_TESTFUNC "s")
elseif(FFTW_LOOK_FOR_FFTW_LONG)
set(FFTW_PREC "l")
set(FFTW_PREC_TESTFUNC "l")
elseif(FFTW_LOOK_FOR_FFTW_QUAD)
set(FFTW_PREC "q")
set(FFTW_PREC_TESTFUNC "q")
else()
set(FFTW_PREC "")
set(FFTW_PREC_TESTFUNC "d")
endif()
set(FFTW_LIBRARIES "")
set(FFTW_LIBRARY_DIRS "")
if(NOT FFTW_LOOK_FOR_MKL)
if (FFTW_LOOK_FOR_THREADS)
set(FFTW_libs_to_find "fftw3${FFTW_PREC}_threads;fftw3${FFTW_PREC};fftw3")
elseif (FFTW_LOOK_FOR_OMP)
set(FFTW_libs_to_find "fftw3${FFTW_PREC}_omp;fftw3${FFTW_PREC};fftw3")
else()
set(FFTW_libs_to_find "fftw3${FFTW_PREC};fftw3")
endif()
if (FFTW_LOOK_FOR_FFTW_QUAD)
if (NOT FFTW_LOOK_FOR_MKL AND NOT FFTW_LOOK_FOR_ESSL)
list(APPEND FFTW_libs_to_find "quadmath")
endif()
endif()
if (FFTW_LOOK_FOR_ESSL)
set(FFTW_libs_to_find "fftw3_essl")
endif()
# Try to find the fftw lib in the given paths
# ----------------------------------------------
# call cmake macro to find the lib path
if(FFTW_LIBDIR)
foreach(fftw_lib ${FFTW_libs_to_find})
set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
find_library(FFTW_${fftw_lib}_LIBRARY
NAMES ${fftw_lib}
HINTS ${FFTW_LIBDIR})
endforeach()
else()
if(FFTW_DIR)
foreach(fftw_lib ${FFTW_libs_to_find})
set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
find_library(FFTW_${fftw_lib}_LIBRARY
NAMES ${fftw_lib}
HINTS ${FFTW_DIR}
PATH_SUFFIXES lib lib32 lib64)
endforeach()
else()
foreach(fftw_lib ${FFTW_libs_to_find})
set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
find_library(FFTW_${fftw_lib}_LIBRARY
NAMES ${fftw_lib}
HINTS ${PATH_TO_LOOK_FOR})
endforeach()
endif()
endif()
# If found, add path to cmake variable
# ------------------------------------
foreach(fftw_lib ${FFTW_libs_to_find})
if (FFTW_${fftw_lib}_LIBRARY)
get_filename_component(${fftw_lib}_lib_path "${FFTW_${fftw_lib}_LIBRARY}" PATH)
# set cmake variables
list(APPEND FFTW_LIBRARIES "${FFTW_${fftw_lib}_LIBRARY}")
list(APPEND FFTW_LIBRARY_DIRS "${${fftw_lib}_lib_path}")
else ()
list(APPEND FFTW_LIBRARIES "${FFTW_${fftw_lib}_LIBRARY}")
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW -- lib ${fftw_lib} not found")
endif()
endif ()
mark_as_advanced(FFTW_${fftw_lib}_LIBRARY)
endforeach()
# check if one lib is NOTFOUND
foreach(lib ${FFTW_LIBRARIES})
if (NOT lib)
set(FFTW_LIBRARIES "FFTW_LIBRARIES-NOTFOUND")
endif()
endforeach()
endif(NOT FFTW_LOOK_FOR_MKL)
if (FFTW_LOOK_FOR_MKL OR FFTW_LOOK_FOR_ESSL)
# FFTW relies on blas libs
if (FFTW_LOOK_FOR_THREADS)
if (FFTW_LOOK_FOR_MKL)
if (BLAS_PAR_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${BLAS_PAR_LIBRARIES}")
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Multithreaded FFTW has been found: ${FFTW_LIBRARIES}")
endif()
else()
if (NOT FFTW_FIND_QUIETLY)
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
message(FATAL_ERROR "FFTW is required but not found.")
else()
message(STATUS "Multithreaded FFTW not found.")
endif()
endif()
endif(BLAS_PAR_LIBRARIES)
elseif (FFTW_LOOK_FOR_ESSL)
if (FFTW_LIBRARIES AND BLAS_PAR_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${BLAS_PAR_LIBRARIES}")
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "Multithreaded FFTW has been found: ${FFTW_LIBRARIES}")
endif()
else()
if (NOT FFTW_FIND_QUIETLY)
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
message(FATAL_ERROR "FFTW is required but not found.")
else()
message(STATUS "Multithreaded FFTW not found.")
endif()
endif()
endif(FFTW_LIBRARIES AND BLAS_PAR_LIBRARIES)
endif()
else(FFTW_LOOK_FOR_THREADS)
if (FFTW_LOOK_FOR_MKL)
if (BLAS_SEQ_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${BLAS_SEQ_LIBRARIES}")
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "FFTW has been found: ${FFTW_LIBRARIES}")
endif()
else()
if (NOT FFTW_FIND_QUIETLY)
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
message(FATAL_ERROR "FFTW is required but not found.")
else()
message(STATUS "FFTW not found.")
endif()
endif()
endif(BLAS_SEQ_LIBRARIES)
elseif (FFTW_LOOK_FOR_ESSL)
if (FFTW_LIBRARIES AND BLAS_SEQ_LIBRARIES)
list(APPEND FFTW_LIBRARIES "${BLAS_SEQ_LIBRARIES}")
if (NOT FFTW_FIND_QUIETLY)
message(STATUS "FFTW has been found: ${FFTW_LIBRARIES}")
endif()
else()
if (NOT FFTW_FIND_QUIETLY)
if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
message(FATAL_ERROR "FFTW is required but not found.")
else()
message(STATUS "FFTW not found.")
endif()
endif()
endif(FFTW_LIBRARIES AND BLAS_SEQ_LIBRARIES)
endif()
endif(FFTW_LOOK_FOR_THREADS)
if (BLAS_LIBRARY_DIRS)
list(APPEND FFTW_LIBRARY_DIRS "${BLAS_LIBRARY_DIRS}")
else()
if (NOT FFTW_FIND_QUIETLY)
message(WARNING "FFTW_LIBRARY_DIRS may not be complete because BLAS_LIBRARY_DIRS is empty.")
endif()
endif()
endif(FFTW_LOOK_FOR_MKL OR FFTW_LOOK_FOR_ESSL)
list(REMOVE_DUPLICATES FFTW_INCLUDE_DIRS)
list(REMOVE_DUPLICATES FFTW_LIBRARY_DIRS)
# check if one lib is NOTFOUND
foreach(lib ${FFTW_LIBRARIES})
if (NOT lib)
set(FFTW_LIBRARIES "FFTW_LIBRARIES-NOTFOUND")
endif()
endforeach()
# check a function to validate the find
if(FFTW_LIBRARIES)
set(REQUIRED_FLAGS)
set(REQUIRED_LDFLAGS)
set(REQUIRED_INCDIRS)
set(REQUIRED_LIBDIRS)
set(REQUIRED_LIBS)
# FFTW
if (FFTW_INCLUDE_DIRS)
set(REQUIRED_INCDIRS "${FFTW_INCLUDE_DIRS}")
endif()
if (FFTW_LIBRARY_DIRS)
set(REQUIRED_LIBDIRS "${FFTW_LIBRARY_DIRS}")
endif()
set(REQUIRED_LIBS "${FFTW_LIBRARIES}")
# THREADS
if (FFTW_LOOK_FOR_THREADS)
list(APPEND REQUIRED_LIBS "${CMAKE_THREAD_LIBS_INIT}")
endif()
# OMP
if(FFTW_LOOK_FOR_OMP)
set(REQUIRED_FLAGS "-fopenmp")
#if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
# # either gomp ...
# list(APPEND REQUIRED_LIBS "-lgomp")
# # or iomp5
# list(APPEND REQUIRED_LIBS "-liomp5")
#elseif (CMAKE_C_COMPILER_ID STREQUAL "Intel")
# list(APPEND REQUIRED_LIBS "-liomp5")
#endif()
endif()
# MKL
if(FFTW_LOOK_FOR_MKL)
list(APPEND REQUIRED_LIBS "${CMAKE_THREAD_LIBS_INIT}")
if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
list(APPEND REQUIRED_LDFLAGS "-Wl,--no-as-needed")
endif()
endif()
# m
find_library(M_LIBRARY NAMES m)
mark_as_advanced(M_LIBRARY)
if(M_LIBRARY)
list(APPEND REQUIRED_LIBS "-lm")
endif()
# set required libraries for link
set(CMAKE_REQUIRED_INCLUDES "${REQUIRED_INCDIRS}")
set(CMAKE_REQUIRED_LIBRARIES)
list(APPEND CMAKE_REQUIRED_LIBRARIES "${REQUIRED_LDFLAGS}")
foreach(lib_dir ${REQUIRED_LIBDIRS})
list(APPEND CMAKE_REQUIRED_LIBRARIES "-L${lib_dir}")
endforeach()
list(APPEND CMAKE_REQUIRED_LIBRARIES "${REQUIRED_LIBS}")
list(APPEND CMAKE_REQUIRED_FLAGS "${REQUIRED_FLAGS}")
string(REGEX REPLACE "^ -" "-" CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
# test link
unset(FFTW_WORKS CACHE)
include(CheckFunctionExists)
if (FFTW_LOOK_FOR_ESSL)
check_function_exists(${FFTW_PREC_TESTFUNC}fftw_execute FFTW_WORKS)
else()
check_function_exists(${FFTW_PREC_TESTFUNC}fftw_execute_ FFTW_WORKS)
endif()
mark_as_advanced(FFTW_WORKS)
if(FFTW_WORKS)
# save link with dependencies
set(FFTW_LIBRARIES_DEP "${REQUIRED_LIBS}")
set(FFTW_LIBRARY_DIRS_DEP "${REQUIRED_LIBDIRS}")
set(FFTW_INCLUDE_DIRS_DEP "${REQUIRED_INCDIRS}")
set(FFTW_C_FLAGS "${REQUIRED_FLAGS}")
set(FFTW_LINKER_FLAGS "${REQUIRED_LDFLAGS}")
list(REMOVE_DUPLICATES FFTW_LIBRARY_DIRS_DEP)
list(REMOVE_DUPLICATES FFTW_INCLUDE_DIRS_DEP)
list(REMOVE_DUPLICATES FFTW_LINKER_FLAGS)
else()
if(NOT FFTW_FIND_QUIETLY)
message(STATUS "Looking for FFTW : test of ${FFTW_PREC_TESTFUNC}fftw_execute_ with fftw library fails")
message(STATUS "CMAKE_REQUIRED_LIBRARIES: ${CMAKE_REQUIRED_LIBRARIES}")
message(STATUS "CMAKE_REQUIRED_INCLUDES: ${CMAKE_REQUIRED_INCLUDES}")
message(STATUS "CMAKE_REQUIRED_FLAGS: ${CMAKE_REQUIRED_FLAGS}")
message(STATUS "Check in CMakeFiles/CMakeError.log to figure out why it fails")
else()
set(FFTW_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
endif()
endif()
set(CMAKE_REQUIRED_INCLUDES)
set(CMAKE_REQUIRED_FLAGS)
set(CMAKE_REQUIRED_LIBRARIES)
endif(FFTW_LIBRARIES)
endif( (NOT PKG_CONFIG_EXECUTABLE) OR
(PKG_CONFIG_EXECUTABLE AND NOT FFTW_FOUND) OR
FFTW_GIVEN_BY_USER OR
FFTW_LOOK_FOR_MKL OR
FFTW_LOOK_FOR_ESSL
)
if (FFTW_LIBRARIES)
list(GET FFTW_LIBRARIES 0 first_lib)
get_filename_component(first_lib_path "${first_lib}" PATH)
if (${first_lib_path} MATCHES "(/lib(32|64)?$)|(/lib/intel64$|/lib/ia32$)")
string(REGEX REPLACE "(/lib(32|64)?$)|(/lib/intel64$|/lib/ia32$)" "" not_cached_dir "${first_lib_path}")
set(FFTW_DIR_FOUND "${not_cached_dir}" CACHE PATH "Installation directory of FFTW library" FORCE)
else()
set(FFTW_DIR_FOUND "${first_lib_path}" CACHE PATH "Installation directory of FFTW library" FORCE)
endif()
endif()
mark_as_advanced(FFTW_DIR)
mark_as_advanced(FFTW_DIR_FOUND)
# check that FFTW has been found
# -------------------------------
include(FindPackageHandleStandardArgs)
if( (NOT PKG_CONFIG_EXECUTABLE) OR (PKG_CONFIG_EXECUTABLE AND NOT FFTW_FOUND) OR (FFTW_GIVEN_BY_USER) )
find_package_handle_standard_args(FFTW DEFAULT_MSG
FFTW_LIBRARIES
FFTW_INCLUDE_DIRS
FFTW_WORKS)
else()
find_package_handle_standard_args(FFTW DEFAULT_MSG
FFTW_LIBRARIES
FFTW_WORKS)
endif()
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