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370 lines
12 KiB
370 lines
12 KiB
###
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#
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# @copyright (c) 2009-2014 The University of Tennessee and The University
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# of Tennessee Research Foundation.
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# All rights reserved.
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# @copyright (c) 2012-2014 Inria. All rights reserved.
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# @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
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#
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###
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#
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# - Find SCOTCH include dirs and libraries
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# Use this module by invoking find_package with the form:
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# find_package(SCOTCH
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# [REQUIRED] # Fail with error if scotch is not found
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# [COMPONENTS <comp1> <comp2> ...] # dependencies
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# )
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#
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# COMPONENTS can be some of the following:
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# - ESMUMPS: to activate detection of Scotch with the esmumps interface
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#
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# This module finds headers and scotch library.
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# Results are reported in variables:
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# SCOTCH_FOUND - True if headers and requested libraries were found
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# SCOTCH_INCLUDE_DIRS - scotch include directories
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# SCOTCH_LIBRARY_DIRS - Link directories for scotch libraries
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# SCOTCH_LIBRARIES - scotch component libraries to be linked
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# SCOTCH_INTSIZE - Number of octets occupied by a SCOTCH_Num
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#
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# The user can give specific paths where to find the libraries adding cmake
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# options at configure (ex: cmake path/to/project -DSCOTCH=path/to/scotch):
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# SCOTCH_DIR - Where to find the base directory of scotch
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# SCOTCH_INCDIR - Where to find the header files
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# SCOTCH_LIBDIR - Where to find the library files
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# The module can also look for the following environment variables if paths
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# are not given as cmake variable: SCOTCH_DIR, SCOTCH_INCDIR, SCOTCH_LIBDIR
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#=============================================================================
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# Copyright 2012-2013 Inria
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# Copyright 2012-2013 Emmanuel Agullo
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# Copyright 2012-2013 Mathieu Faverge
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# Copyright 2012 Cedric Castagnede
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# Copyright 2013 Florent Pruvost
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file MORSE-Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of Morse, substitute the full
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# License text for the above reference.)
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if (NOT SCOTCH_FOUND)
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set(SCOTCH_DIR "" CACHE PATH "Installation directory of SCOTCH library")
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if (NOT SCOTCH_FIND_QUIETLY)
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message(STATUS "A cache variable, namely SCOTCH_DIR, has been set to specify the install directory of SCOTCH")
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endif()
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endif()
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# Set the version to find
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set(SCOTCH_LOOK_FOR_ESMUMPS OFF)
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if( SCOTCH_FIND_COMPONENTS )
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foreach( component ${SCOTCH_FIND_COMPONENTS} )
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if (${component} STREQUAL "ESMUMPS")
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# means we look for esmumps library
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set(SCOTCH_LOOK_FOR_ESMUMPS ON)
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endif()
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endforeach()
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endif()
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# SCOTCH may depend on Threads, try to find it
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if (NOT THREADS_FOUND)
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if (SCOTCH_FIND_REQUIRED)
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find_package(Threads REQUIRED)
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else()
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find_package(Threads)
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endif()
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endif()
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# Looking for include
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# -------------------
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# Add system include paths to search include
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# ------------------------------------------
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unset(_inc_env)
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set(ENV_SCOTCH_DIR "$ENV{SCOTCH_DIR}")
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set(ENV_SCOTCH_INCDIR "$ENV{SCOTCH_INCDIR}")
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if(ENV_SCOTCH_INCDIR)
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list(APPEND _inc_env "${ENV_SCOTCH_INCDIR}")
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elseif(ENV_SCOTCH_DIR)
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list(APPEND _inc_env "${ENV_SCOTCH_DIR}")
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list(APPEND _inc_env "${ENV_SCOTCH_DIR}/include")
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list(APPEND _inc_env "${ENV_SCOTCH_DIR}/include/scotch")
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else()
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if(WIN32)
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string(REPLACE ":" ";" _inc_env "$ENV{INCLUDE}")
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else()
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string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}")
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list(APPEND _inc_env "${_path_env}")
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string(REPLACE ":" ";" _path_env "$ENV{C_INCLUDE_PATH}")
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list(APPEND _inc_env "${_path_env}")
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string(REPLACE ":" ";" _path_env "$ENV{CPATH}")
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list(APPEND _inc_env "${_path_env}")
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string(REPLACE ":" ";" _path_env "$ENV{INCLUDE_PATH}")
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list(APPEND _inc_env "${_path_env}")
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endif()
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endif()
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list(APPEND _inc_env "${CMAKE_PLATFORM_IMPLICIT_INCLUDE_DIRECTORIES}")
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list(APPEND _inc_env "${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}")
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list(REMOVE_DUPLICATES _inc_env)
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# Try to find the scotch header in the given paths
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# -------------------------------------------------
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# call cmake macro to find the header path
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if(SCOTCH_INCDIR)
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set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND")
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find_path(SCOTCH_scotch.h_DIRS
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NAMES scotch.h
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HINTS ${SCOTCH_INCDIR})
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else()
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if(SCOTCH_DIR)
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set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND")
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find_path(SCOTCH_scotch.h_DIRS
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NAMES scotch.h
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HINTS ${SCOTCH_DIR}
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PATH_SUFFIXES "include" "include/scotch")
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else()
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set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND")
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find_path(SCOTCH_scotch.h_DIRS
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NAMES scotch.h
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HINTS ${_inc_env}
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PATH_SUFFIXES "scotch")
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endif()
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endif()
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mark_as_advanced(SCOTCH_scotch.h_DIRS)
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# If found, add path to cmake variable
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# ------------------------------------
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if (SCOTCH_scotch.h_DIRS)
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set(SCOTCH_INCLUDE_DIRS "${SCOTCH_scotch.h_DIRS}")
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else ()
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set(SCOTCH_INCLUDE_DIRS "SCOTCH_INCLUDE_DIRS-NOTFOUND")
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if (NOT SCOTCH_FIND_QUIETLY)
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message(STATUS "Looking for scotch -- scotch.h not found")
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endif()
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endif()
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list(REMOVE_DUPLICATES SCOTCH_INCLUDE_DIRS)
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# Looking for lib
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# ---------------
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# Add system library paths to search lib
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# --------------------------------------
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unset(_lib_env)
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set(ENV_SCOTCH_LIBDIR "$ENV{SCOTCH_LIBDIR}")
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if(ENV_SCOTCH_LIBDIR)
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list(APPEND _lib_env "${ENV_SCOTCH_LIBDIR}")
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elseif(ENV_SCOTCH_DIR)
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list(APPEND _lib_env "${ENV_SCOTCH_DIR}")
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list(APPEND _lib_env "${ENV_SCOTCH_DIR}/lib")
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else()
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if(WIN32)
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string(REPLACE ":" ";" _lib_env "$ENV{LIB}")
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else()
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if(APPLE)
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string(REPLACE ":" ";" _lib_env "$ENV{DYLD_LIBRARY_PATH}")
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else()
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string(REPLACE ":" ";" _lib_env "$ENV{LD_LIBRARY_PATH}")
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endif()
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list(APPEND _lib_env "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}")
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list(APPEND _lib_env "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}")
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endif()
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endif()
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list(REMOVE_DUPLICATES _lib_env)
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# Try to find the scotch lib in the given paths
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# ----------------------------------------------
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set(SCOTCH_libs_to_find "scotch;scotcherrexit")
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if (SCOTCH_LOOK_FOR_ESMUMPS)
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list(INSERT SCOTCH_libs_to_find 0 "esmumps")
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endif()
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# call cmake macro to find the lib path
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if(SCOTCH_LIBDIR)
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foreach(scotch_lib ${SCOTCH_libs_to_find})
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set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND")
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find_library(SCOTCH_${scotch_lib}_LIBRARY
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NAMES ${scotch_lib}
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HINTS ${SCOTCH_LIBDIR})
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endforeach()
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else()
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if(SCOTCH_DIR)
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foreach(scotch_lib ${SCOTCH_libs_to_find})
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set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND")
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find_library(SCOTCH_${scotch_lib}_LIBRARY
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NAMES ${scotch_lib}
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HINTS ${SCOTCH_DIR}
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PATH_SUFFIXES lib lib32 lib64)
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endforeach()
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else()
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foreach(scotch_lib ${SCOTCH_libs_to_find})
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set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND")
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find_library(SCOTCH_${scotch_lib}_LIBRARY
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NAMES ${scotch_lib}
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HINTS ${_lib_env})
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endforeach()
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endif()
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endif()
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set(SCOTCH_LIBRARIES "")
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set(SCOTCH_LIBRARY_DIRS "")
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# If found, add path to cmake variable
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# ------------------------------------
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foreach(scotch_lib ${SCOTCH_libs_to_find})
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if (SCOTCH_${scotch_lib}_LIBRARY)
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get_filename_component(${scotch_lib}_lib_path "${SCOTCH_${scotch_lib}_LIBRARY}" PATH)
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# set cmake variables
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list(APPEND SCOTCH_LIBRARIES "${SCOTCH_${scotch_lib}_LIBRARY}")
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list(APPEND SCOTCH_LIBRARY_DIRS "${${scotch_lib}_lib_path}")
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else ()
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list(APPEND SCOTCH_LIBRARIES "${SCOTCH_${scotch_lib}_LIBRARY}")
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if (NOT SCOTCH_FIND_QUIETLY)
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message(STATUS "Looking for scotch -- lib ${scotch_lib} not found")
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endif()
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endif ()
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mark_as_advanced(SCOTCH_${scotch_lib}_LIBRARY)
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endforeach()
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list(REMOVE_DUPLICATES SCOTCH_LIBRARY_DIRS)
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# check a function to validate the find
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if(SCOTCH_LIBRARIES)
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set(REQUIRED_INCDIRS)
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set(REQUIRED_LIBDIRS)
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set(REQUIRED_LIBS)
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# SCOTCH
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if (SCOTCH_INCLUDE_DIRS)
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set(REQUIRED_INCDIRS "${SCOTCH_INCLUDE_DIRS}")
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endif()
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if (SCOTCH_LIBRARY_DIRS)
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set(REQUIRED_LIBDIRS "${SCOTCH_LIBRARY_DIRS}")
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endif()
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set(REQUIRED_LIBS "${SCOTCH_LIBRARIES}")
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# THREADS
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if(CMAKE_THREAD_LIBS_INIT)
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list(APPEND REQUIRED_LIBS "${CMAKE_THREAD_LIBS_INIT}")
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endif()
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set(Z_LIBRARY "Z_LIBRARY-NOTFOUND")
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find_library(Z_LIBRARY NAMES z)
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mark_as_advanced(Z_LIBRARY)
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if(Z_LIBRARY)
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list(APPEND REQUIRED_LIBS "-lz")
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endif()
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set(M_LIBRARY "M_LIBRARY-NOTFOUND")
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find_library(M_LIBRARY NAMES m)
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mark_as_advanced(M_LIBRARY)
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if(M_LIBRARY)
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list(APPEND REQUIRED_LIBS "-lm")
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endif()
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set(RT_LIBRARY "RT_LIBRARY-NOTFOUND")
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find_library(RT_LIBRARY NAMES rt)
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mark_as_advanced(RT_LIBRARY)
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if(RT_LIBRARY)
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list(APPEND REQUIRED_LIBS "-lrt")
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endif()
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# set required libraries for link
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set(CMAKE_REQUIRED_INCLUDES "${REQUIRED_INCDIRS}")
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set(CMAKE_REQUIRED_LIBRARIES)
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foreach(lib_dir ${REQUIRED_LIBDIRS})
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list(APPEND CMAKE_REQUIRED_LIBRARIES "-L${lib_dir}")
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endforeach()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${REQUIRED_LIBS}")
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string(REGEX REPLACE "^ -" "-" CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
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# test link
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unset(SCOTCH_WORKS CACHE)
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include(CheckFunctionExists)
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check_function_exists(SCOTCH_graphInit SCOTCH_WORKS)
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mark_as_advanced(SCOTCH_WORKS)
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if(SCOTCH_WORKS)
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# save link with dependencies
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set(SCOTCH_LIBRARIES "${REQUIRED_LIBS}")
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else()
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if(NOT SCOTCH_FIND_QUIETLY)
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message(STATUS "Looking for SCOTCH : test of SCOTCH_graphInit with SCOTCH library fails")
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message(STATUS "CMAKE_REQUIRED_LIBRARIES: ${CMAKE_REQUIRED_LIBRARIES}")
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message(STATUS "CMAKE_REQUIRED_INCLUDES: ${CMAKE_REQUIRED_INCLUDES}")
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message(STATUS "Check in CMakeFiles/CMakeError.log to figure out why it fails")
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endif()
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endif()
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set(CMAKE_REQUIRED_INCLUDES)
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set(CMAKE_REQUIRED_FLAGS)
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set(CMAKE_REQUIRED_LIBRARIES)
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endif(SCOTCH_LIBRARIES)
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if (SCOTCH_LIBRARIES)
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list(GET SCOTCH_LIBRARIES 0 first_lib)
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get_filename_component(first_lib_path "${first_lib}" PATH)
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if (${first_lib_path} MATCHES "/lib(32|64)?$")
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string(REGEX REPLACE "/lib(32|64)?$" "" not_cached_dir "${first_lib_path}")
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set(SCOTCH_DIR_FOUND "${not_cached_dir}" CACHE PATH "Installation directory of SCOTCH library" FORCE)
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else()
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set(SCOTCH_DIR_FOUND "${first_lib_path}" CACHE PATH "Installation directory of SCOTCH library" FORCE)
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endif()
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endif()
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mark_as_advanced(SCOTCH_DIR)
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mark_as_advanced(SCOTCH_DIR_FOUND)
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# Check the size of SCOTCH_Num
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# ---------------------------------
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set(CMAKE_REQUIRED_INCLUDES ${SCOTCH_INCLUDE_DIRS})
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include(CheckCSourceRuns)
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#stdio.h and stdint.h should be included by scotch.h directly
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set(SCOTCH_C_TEST_SCOTCH_Num_4 "
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#include <stdio.h>
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#include <stdint.h>
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#include <scotch.h>
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int main(int argc, char **argv) {
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if (sizeof(SCOTCH_Num) == 4)
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return 0;
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else
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return 1;
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}
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")
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set(SCOTCH_C_TEST_SCOTCH_Num_8 "
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#include <stdio.h>
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#include <stdint.h>
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#include <scotch.h>
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int main(int argc, char **argv) {
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if (sizeof(SCOTCH_Num) == 8)
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return 0;
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else
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return 1;
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}
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")
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check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_4}" SCOTCH_Num_4)
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if(NOT SCOTCH_Num_4)
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check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_8}" SCOTCH_Num_8)
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if(NOT SCOTCH_Num_8)
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set(SCOTCH_INTSIZE -1)
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else()
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set(SCOTCH_INTSIZE 8)
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endif()
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else()
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set(SCOTCH_INTSIZE 4)
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endif()
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set(CMAKE_REQUIRED_INCLUDES "")
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# check that SCOTCH has been found
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# ---------------------------------
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(SCOTCH DEFAULT_MSG
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SCOTCH_LIBRARIES
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SCOTCH_WORKS)
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#
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# TODO: Add possibility to check for specific functions in the library
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#
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