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muSpectre/cmake/FindPFFT.cmake
3795c8590d33bugfix/T2542

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FindPFFT.cmake
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# - Find the PFFT library
#
# Usage:
# find_package(PFFT [REQUIRED] [QUIET] )
#
# It sets the following variables:
# PFFT_FOUND ... true if PFFT is found on the system
# PFFT_LIBRARIES ... full path to PFFT library
# PFFT_INCLUDES ... PFFT include directory
#
# The following variables will be checked by the function
# PFFT_USE_STATIC_LIBS ... if true, only static libraries are found
# PFFT_ROOT ... if set, the libraries are exclusively searched
# under this path
# PFFT_LIBRARY ... PFFT library to use
# PFFT_INCLUDE_DIR ... PFFT include directory
#
#If environment variable PFFTDIR is specified, it has same effect as PFFT_ROOT
if( NOT PFFT_ROOT AND ENV{PFFTDIR} )
set( PFFT_ROOT $ENV{PFFTDIR} )
endif()
# Check if we can use PkgConfig
find_package(PkgConfig)
#Determine from PKG
if( PKG_CONFIG_FOUND AND NOT PFFT_ROOT )
pkg_check_modules( PKG_PFFT QUIET "PFFT" )
endif()
#Check whether to search static or dynamic libs
set( CMAKE_FIND_LIBRARY_SUFFIXES_SAV ${CMAKE_FIND_LIBRARY_SUFFIXES} )
if( ${PFFT_USE_STATIC_LIBS} )
set( CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_STATIC_LIBRARY_SUFFIX} )
else()
set( CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_SHARED_LIBRARY_SUFFIX} )
endif()
if( PFFT_ROOT )
#find libs
find_library(
PFFT_LIBRARIES
NAMES "pfft"
PATHS ${PFFT_ROOT}
PATH_SUFFIXES "lib" "lib64"
NO_DEFAULT_PATH
)
#find includes
find_path(
PFFT_INCLUDES
NAMES "pfft.h"
PATHS ${PFFT_ROOT}
PATH_SUFFIXES "include"
NO_DEFAULT_PATH
)
else()
find_library(
PFFT_LIBRARIES
NAMES "pfft"
PATHS ${PKG_PFFT_LIBRARY_DIRS} ${LIB_INSTALL_DIR}
)
find_path(
PFFT_INCLUDES
NAMES "pfft.h"
PATHS ${PKG_PFFT_INCLUDE_DIRS} ${INCLUDE_INSTALL_DIR}
)
endif( PFFT_ROOT )
set( CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES_SAV} )
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PFFT DEFAULT_MSG
PFFT_INCLUDES PFFT_LIBRARIES)
mark_as_advanced(PFFT_INCLUDES PFFT_LIBRARIES)
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