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FindGSL.cmake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying # file Copyright.txt or https://cmake.org/licensing for details. #[=======================================================================[.rst: FindGSL -------- .. versionadded:: 3.2 Find the native GNU Scientific Library (GSL) includes and libraries. The GNU Scientific Library (GSL) is a numerical library for C and C++ programmers. It is free software under the GNU General Public License. Imported Targets ^^^^^^^^^^^^^^^^ If GSL is found, this module defines the following :prop_tgt:`IMPORTED` targets:: GSL::gsl - The main GSL library. GSL::gslcblas - The CBLAS support library used by GSL. Result Variables ^^^^^^^^^^^^^^^^ This module will set the following variables in your project:: GSL_FOUND - True if GSL found on the local system GSL_INCLUDE_DIRS - Location of GSL header files. GSL_LIBRARIES - The GSL libraries. GSL_VERSION - The version of the discovered GSL install. Hints ^^^^^ Set ``GSL_ROOT_DIR`` to a directory that contains a GSL installation. This script expects to find libraries at ``$GSL_ROOT_DIR/lib`` and the GSL headers at ``$GSL_ROOT_DIR/include/gsl``. The library directory may optionally provide Release and Debug folders. If available, the libraries named ``gsld``, ``gslblasd`` or ``cblasd`` are recognized as debug libraries. For Unix-like systems, this script will use ``$GSL_ROOT_DIR/bin/gsl-config`` (if found) to aid in the discovery of GSL. Cache Variables ^^^^^^^^^^^^^^^ This module may set the following variables depending on platform and type of GSL installation discovered. These variables may optionally be set to help this module find the correct files:: GSL_CBLAS_LIBRARY - Location of the GSL CBLAS library. GSL_CBLAS_LIBRARY_DEBUG - Location of the debug GSL CBLAS library (if any). GSL_CONFIG_EXECUTABLE - Location of the ``gsl-config`` script (if any). GSL_LIBRARY - Location of the GSL library. GSL_LIBRARY_DEBUG - Location of the debug GSL library (if any). #]=======================================================================] include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) #============================================================================= # If the user has provided ``GSL_ROOT_DIR``, use it! Choose items found # at this location over system locations. if( EXISTS "$ENV{GSL_ROOT_DIR}" ) file( TO_CMAKE_PATH "$ENV{GSL_ROOT_DIR}" GSL_ROOT_DIR ) set( GSL_ROOT_DIR "${GSL_ROOT_DIR}" CACHE PATH "Prefix for GSL installation." ) endif() if( NOT EXISTS "${GSL_ROOT_DIR}" ) set( GSL_USE_PKGCONFIG ON ) endif() #============================================================================= # As a first try, use the PkgConfig module. This will work on many # *NIX systems. See :module:`findpkgconfig` # This will return ``GSL_INCLUDEDIR`` and ``GSL_LIBDIR`` used below. if( GSL_USE_PKGCONFIG ) find_package(PkgConfig QUIET) pkg_check_modules( GSL QUIET gsl ) if( EXISTS "${GSL_INCLUDEDIR}" ) get_filename_component( GSL_ROOT_DIR "${GSL_INCLUDEDIR}" DIRECTORY CACHE) endif() endif() #============================================================================= # Set GSL_INCLUDE_DIRS and GSL_LIBRARIES. If we skipped the PkgConfig step, try # to find the libraries at $GSL_ROOT_DIR (if provided) or in standard system # locations. These find_library and find_path calls will prefer custom # locations over standard locations (HINTS). If the requested file is not found # at the HINTS location, standard system locations will be still be searched # (/usr/lib64 (Redhat), lib/i386-linux-gnu (Debian)). find_path( GSL_INCLUDE_DIR NAMES gsl/gsl_sf.h HINTS ${GSL_ROOT_DIR}/include ${GSL_INCLUDEDIR} ) find_library( GSL_LIBRARY NAMES gsl HINTS ${GSL_ROOT_DIR}/lib ${GSL_LIBDIR} PATH_SUFFIXES Release Debug ) find_library( GSL_CBLAS_LIBRARY NAMES gslcblas cblas HINTS ${GSL_ROOT_DIR}/lib ${GSL_LIBDIR} PATH_SUFFIXES Release Debug ) # Do we also have debug versions? find_library( GSL_LIBRARY_DEBUG NAMES gsld gsl HINTS ${GSL_ROOT_DIR}/lib ${GSL_LIBDIR} PATH_SUFFIXES Debug ) find_library( GSL_CBLAS_LIBRARY_DEBUG NAMES gslcblasd cblasd gslcblas cblas HINTS ${GSL_ROOT_DIR}/lib ${GSL_LIBDIR} PATH_SUFFIXES Debug ) set( GSL_INCLUDE_DIRS ${GSL_INCLUDE_DIR} ) set( GSL_LIBRARIES ${GSL_LIBRARY} ${GSL_CBLAS_LIBRARY} ) # If we didn't use PkgConfig, try to find the version via gsl-config or by # reading gsl_version.h. if( NOT GSL_VERSION ) # 1. If gsl-config exists, query for the version. find_program( GSL_CONFIG_EXECUTABLE NAMES gsl-config HINTS "${GSL_ROOT_DIR}/bin" ) if( EXISTS "${GSL_CONFIG_EXECUTABLE}" ) execute_process( COMMAND "${GSL_CONFIG_EXECUTABLE}" --version OUTPUT_VARIABLE GSL_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE ) endif() # 2. If gsl-config is not available, try looking in gsl/gsl_version.h if( NOT GSL_VERSION AND EXISTS "${GSL_INCLUDE_DIRS}/gsl/gsl_version.h" ) file( STRINGS "${GSL_INCLUDE_DIRS}/gsl/gsl_version.h" gsl_version_h_contents REGEX "define GSL_VERSION" ) string( REGEX REPLACE ".*define[ ]+GSL_VERSION[ ]+\"([^\"]*)\".*" "\\1" GSL_VERSION ${gsl_version_h_contents} ) endif() # might also try scraping the directory name for a regex match "gsl-X.X" endif() #============================================================================= # handle the QUIETLY and REQUIRED arguments and set GSL_FOUND to TRUE if all # listed variables are TRUE find_package_handle_standard_args( GSL FOUND_VAR GSL_FOUND REQUIRED_VARS GSL_INCLUDE_DIR GSL_LIBRARY GSL_CBLAS_LIBRARY VERSION_VAR GSL_VERSION ) mark_as_advanced( GSL_ROOT_DIR GSL_VERSION GSL_LIBRARY GSL_INCLUDE_DIR GSL_CBLAS_LIBRARY GSL_LIBRARY_DEBUG GSL_CBLAS_LIBRARY_DEBUG GSL_USE_PKGCONFIG GSL_CONFIG ) #============================================================================= # Register imported libraries: # 1. If we can find a Windows .dll file (or if we can find both Debug and # Release libraries), we will set appropriate target properties for these. # 2. However, for most systems, we will only register the import location and # include directory. # Look for dlls, or Release and Debug libraries. if(WIN32) string( REPLACE ".lib" ".dll" GSL_LIBRARY_DLL "${GSL_LIBRARY}" ) string( REPLACE ".lib" ".dll" GSL_CBLAS_LIBRARY_DLL "${GSL_CBLAS_LIBRARY}" ) string( REPLACE ".lib" ".dll" GSL_LIBRARY_DEBUG_DLL "${GSL_LIBRARY_DEBUG}" ) string( REPLACE ".lib" ".dll" GSL_CBLAS_LIBRARY_DEBUG_DLL "${GSL_CBLAS_LIBRARY_DEBUG}" ) endif() if( GSL_FOUND AND NOT TARGET GSL::gsl ) if( EXISTS "${GSL_LIBRARY_DLL}" AND EXISTS "${GSL_CBLAS_LIBRARY_DLL}") # Windows systems with dll libraries. add_library( GSL::gsl SHARED IMPORTED ) add_library( GSL::gslcblas SHARED IMPORTED ) # Windows with dlls, but only Release libraries. set_target_properties( GSL::gslcblas PROPERTIES IMPORTED_LOCATION_RELEASE "${GSL_CBLAS_LIBRARY_DLL}" IMPORTED_IMPLIB "${GSL_CBLAS_LIBRARY}" INTERFACE_INCLUDE_DIRECTORIES "${GSL_INCLUDE_DIRS}" IMPORTED_CONFIGURATIONS Release IMPORTED_LINK_INTERFACE_LANGUAGES "C" ) set_target_properties( GSL::gsl PROPERTIES IMPORTED_LOCATION_RELEASE "${GSL_LIBRARY_DLL}" IMPORTED_IMPLIB "${GSL_LIBRARY}" INTERFACE_INCLUDE_DIRECTORIES "${GSL_INCLUDE_DIRS}" IMPORTED_CONFIGURATIONS Release IMPORTED_LINK_INTERFACE_LANGUAGES "C" INTERFACE_LINK_LIBRARIES GSL::gslcblas ) # If we have both Debug and Release libraries if( EXISTS "${GSL_LIBRARY_DEBUG_DLL}" AND EXISTS "${GSL_CBLAS_LIBRARY_DEBUG_DLL}") set_property( TARGET GSL::gslcblas APPEND PROPERTY IMPORTED_CONFIGURATIONS Debug ) set_target_properties( GSL::gslcblas PROPERTIES IMPORTED_LOCATION_DEBUG "${GSL_CBLAS_LIBRARY_DEBUG_DLL}" IMPORTED_IMPLIB_DEBUG "${GSL_CBLAS_LIBRARY_DEBUG}" ) set_property( TARGET GSL::gsl APPEND PROPERTY IMPORTED_CONFIGURATIONS Debug ) set_target_properties( GSL::gsl PROPERTIES IMPORTED_LOCATION_DEBUG "${GSL_LIBRARY_DEBUG_DLL}" IMPORTED_IMPLIB_DEBUG "${GSL_LIBRARY_DEBUG}" ) endif() else() # For all other environments (ones without dll libraries), create # the imported library targets. add_library( GSL::gsl UNKNOWN IMPORTED ) add_library( GSL::gslcblas UNKNOWN IMPORTED ) set_target_properties( GSL::gslcblas PROPERTIES IMPORTED_LOCATION "${GSL_CBLAS_LIBRARY}" INTERFACE_INCLUDE_DIRECTORIES "${GSL_INCLUDE_DIRS}" IMPORTED_LINK_INTERFACE_LANGUAGES "C" ) set_target_properties( GSL::gsl PROPERTIES IMPORTED_LOCATION "${GSL_LIBRARY}" INTERFACE_INCLUDE_DIRECTORIES "${GSL_INCLUDE_DIRS}" IMPORTED_LINK_INTERFACE_LANGUAGES "C" INTERFACE_LINK_LIBRARIES GSL::gslcblas ) endif() endif()
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