ref: f87eb660e3f78100be125e6ef38e07539bb0d53f
dir: /cmake/FindFFTW3.cmake/
# Adapted from: https://github.com/wjakob/layerlab/blob/master/cmake/FindFFTW.cmake
# Copyright (c) 2015, Wenzel Jakob
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# - Find FFTW3
# Find the native FFTW3 includes and library
#
# Cache variables:
#
# FFTW3_INCLUDE_DIR - where to find fftw3.h
# FFTW3_LIBRARY - Path to FFTW3 libray.
# FFTW3_ROOT - Root of FFTW3 installation.
#
# User variables:
#
# FFTW3_INCLUDE_DIRS - where to find fftw3.h
# FFTW3_LIBRARIES - List of libraries when using FFTW3.
# FFTW3_FOUND - True if FFTW3 found.
if(FFTW3_INCLUDE_DIR)
# Already in cache, be silent
set(FFTW3_FIND_QUIETLY TRUE)
endif(FFTW3_INCLUDE_DIR)
find_package(PkgConfig QUIET)
pkg_check_modules(PC_FFTW3 QUIET fftw3)
set(FFTW3_VERSION ${PC_FFTW3_VERSION})
find_path(FFTW3_INCLUDE_DIR fftw3.h
HINTS
${PC_FFTW3_INCLUDEDIR}
${PC_FFTW3_INCLUDE_DIRS}
${FFTW3_ROOT})
find_library(FFTW3_LIBRARY NAMES fftw3
HINTS
${PC_FFTW3_LIBDIR}
${PC_FFTW3_LIBRARY_DIRS}
${FFTW3_ROOT})
# handle the QUIETLY and REQUIRED arguments and set FFTW3_FOUND to TRUE if
# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(FFTW3
REQUIRED_VARS
FFTW3_LIBRARY
FFTW3_INCLUDE_DIR
VERSION_VAR
FFTW3_VERSION)
if(FFTW3_FOUND)
set(FFTW3_LIBRARIES ${FFTW3_LIBRARY})
set(FFTW3_INCLUDE_DIRS ${FFTW3_INCLUDE_DIR})
if(NOT TARGET FFTW3::fftw3)
add_library(FFTW3::fftw3 UNKNOWN IMPORTED)
set_target_properties(FFTW3::fftw3 PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${FFTW3_INCLUDE_DIR}"
IMPORTED_LOCATION "${FFTW3_LIBRARY}"
)
endif()
endif()
mark_as_advanced(FFTW3_LIBRARY FFTW3_INCLUDE_DIR)