1### 2# 3# @copyright (c) 2009-2014 The University of Tennessee and The University 4# of Tennessee Research Foundation. 5# All rights reserved. 6# @copyright (c) 2012-2014 Inria. All rights reserved. 7# @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved. 8# 9### 10# 11# - Find SCOTCH include dirs and libraries 12# Use this module by invoking find_package with the form: 13# find_package(SCOTCH 14# [REQUIRED] # Fail with error if scotch is not found 15# [COMPONENTS <comp1> <comp2> ...] # dependencies 16# ) 17# 18# COMPONENTS can be some of the following: 19# - ESMUMPS: to activate detection of Scotch with the esmumps interface 20# 21# This module finds headers and scotch library. 22# Results are reported in variables: 23# SCOTCH_FOUND - True if headers and requested libraries were found 24# SCOTCH_INCLUDE_DIRS - scotch include directories 25# SCOTCH_LIBRARY_DIRS - Link directories for scotch libraries 26# SCOTCH_LIBRARIES - scotch component libraries to be linked 27# SCOTCH_INTSIZE - Number of octets occupied by a SCOTCH_Num 28# 29# The user can give specific paths where to find the libraries adding cmake 30# options at configure (ex: cmake path/to/project -DSCOTCH=path/to/scotch): 31# SCOTCH_DIR - Where to find the base directory of scotch 32# SCOTCH_INCDIR - Where to find the header files 33# SCOTCH_LIBDIR - Where to find the library files 34# The module can also look for the following environment variables if paths 35# are not given as cmake variable: SCOTCH_DIR, SCOTCH_INCDIR, SCOTCH_LIBDIR 36 37#============================================================================= 38# Copyright 2012-2013 Inria 39# Copyright 2012-2013 Emmanuel Agullo 40# Copyright 2012-2013 Mathieu Faverge 41# Copyright 2012 Cedric Castagnede 42# Copyright 2013 Florent Pruvost 43# 44# Distributed under the OSI-approved BSD License (the "License"); 45# see accompanying file MORSE-Copyright.txt for details. 46# 47# This software is distributed WITHOUT ANY WARRANTY; without even the 48# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 49# See the License for more information. 50#============================================================================= 51# (To distribute this file outside of Morse, substitute the full 52# License text for the above reference.) 53 54if (NOT SCOTCH_FOUND) 55 set(SCOTCH_DIR "" CACHE PATH "Installation directory of SCOTCH library") 56 if (NOT SCOTCH_FIND_QUIETLY) 57 message(STATUS "A cache variable, namely SCOTCH_DIR, has been set to specify the install directory of SCOTCH") 58 endif() 59endif() 60 61# Set the version to find 62set(SCOTCH_LOOK_FOR_ESMUMPS OFF) 63 64if( SCOTCH_FIND_COMPONENTS ) 65 foreach( component ${SCOTCH_FIND_COMPONENTS} ) 66 if (${component} STREQUAL "ESMUMPS") 67 # means we look for esmumps library 68 set(SCOTCH_LOOK_FOR_ESMUMPS ON) 69 endif() 70 endforeach() 71endif() 72 73# SCOTCH may depend on Threads, try to find it 74include(CMakeFindDependencyMacro) 75if (NOT THREADS_FOUND) 76 if (SCOTCH_FIND_REQUIRED) 77 find_dependency(Threads REQUIRED) 78 else() 79 find_dependency(Threads) 80 endif() 81endif() 82 83# Looking for include 84# ------------------- 85 86# Add system include paths to search include 87# ------------------------------------------ 88unset(_inc_env) 89set(ENV_SCOTCH_DIR "$ENV{SCOTCH_DIR}") 90set(ENV_SCOTCH_INCDIR "$ENV{SCOTCH_INCDIR}") 91if(ENV_SCOTCH_INCDIR) 92 list(APPEND _inc_env "${ENV_SCOTCH_INCDIR}") 93elseif(ENV_SCOTCH_DIR) 94 list(APPEND _inc_env "${ENV_SCOTCH_DIR}") 95 list(APPEND _inc_env "${ENV_SCOTCH_DIR}/include") 96 list(APPEND _inc_env "${ENV_SCOTCH_DIR}/include/scotch") 97else() 98 if(WIN32) 99 string(REPLACE ":" ";" _inc_env "$ENV{INCLUDE}") 100 else() 101 string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}") 102 list(APPEND _inc_env "${_path_env}") 103 string(REPLACE ":" ";" _path_env "$ENV{C_INCLUDE_PATH}") 104 list(APPEND _inc_env "${_path_env}") 105 string(REPLACE ":" ";" _path_env "$ENV{CPATH}") 106 list(APPEND _inc_env "${_path_env}") 107 string(REPLACE ":" ";" _path_env "$ENV{INCLUDE_PATH}") 108 list(APPEND _inc_env "${_path_env}") 109 endif() 110endif() 111list(APPEND _inc_env "${CMAKE_PLATFORM_IMPLICIT_INCLUDE_DIRECTORIES}") 112list(APPEND _inc_env "${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}") 113list(REMOVE_DUPLICATES _inc_env) 114 115 116# Try to find the scotch header in the given paths 117# ------------------------------------------------- 118# call cmake macro to find the header path 119if(SCOTCH_INCDIR) 120 set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND") 121 find_path(SCOTCH_scotch.h_DIRS 122 NAMES scotch.h 123 HINTS ${SCOTCH_INCDIR}) 124else() 125 if(SCOTCH_DIR) 126 set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND") 127 find_path(SCOTCH_scotch.h_DIRS 128 NAMES scotch.h 129 HINTS ${SCOTCH_DIR} 130 PATH_SUFFIXES "include" "include/scotch") 131 else() 132 set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND") 133 find_path(SCOTCH_scotch.h_DIRS 134 NAMES scotch.h 135 HINTS ${_inc_env} 136 PATH_SUFFIXES "scotch") 137 endif() 138endif() 139mark_as_advanced(SCOTCH_scotch.h_DIRS) 140 141# If found, add path to cmake variable 142# ------------------------------------ 143if (SCOTCH_scotch.h_DIRS) 144 set(SCOTCH_INCLUDE_DIRS "${SCOTCH_scotch.h_DIRS}") 145else () 146 set(SCOTCH_INCLUDE_DIRS "SCOTCH_INCLUDE_DIRS-NOTFOUND") 147 if (NOT SCOTCH_FIND_QUIETLY) 148 message(STATUS "Looking for scotch -- scotch.h not found") 149 endif() 150endif() 151list(REMOVE_DUPLICATES SCOTCH_INCLUDE_DIRS) 152 153# Looking for lib 154# --------------- 155 156# Add system library paths to search lib 157# -------------------------------------- 158unset(_lib_env) 159set(ENV_SCOTCH_LIBDIR "$ENV{SCOTCH_LIBDIR}") 160if(ENV_SCOTCH_LIBDIR) 161 list(APPEND _lib_env "${ENV_SCOTCH_LIBDIR}") 162elseif(ENV_SCOTCH_DIR) 163 list(APPEND _lib_env "${ENV_SCOTCH_DIR}") 164 list(APPEND _lib_env "${ENV_SCOTCH_DIR}/lib") 165else() 166 if(WIN32) 167 string(REPLACE ":" ";" _lib_env "$ENV{LIB}") 168 else() 169 if(APPLE) 170 string(REPLACE ":" ";" _lib_env "$ENV{DYLD_LIBRARY_PATH}") 171 else() 172 string(REPLACE ":" ";" _lib_env "$ENV{LD_LIBRARY_PATH}") 173 endif() 174 list(APPEND _lib_env "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}") 175 list(APPEND _lib_env "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}") 176 endif() 177endif() 178list(REMOVE_DUPLICATES _lib_env) 179 180# Try to find the scotch lib in the given paths 181# ---------------------------------------------- 182 183set(SCOTCH_libs_to_find "scotch;scotcherrexit") 184if (SCOTCH_LOOK_FOR_ESMUMPS) 185 list(INSERT SCOTCH_libs_to_find 0 "esmumps") 186endif() 187 188# call cmake macro to find the lib path 189if(SCOTCH_LIBDIR) 190 foreach(scotch_lib ${SCOTCH_libs_to_find}) 191 set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND") 192 find_library(SCOTCH_${scotch_lib}_LIBRARY 193 NAMES ${scotch_lib} 194 HINTS ${SCOTCH_LIBDIR}) 195 endforeach() 196else() 197 if(SCOTCH_DIR) 198 foreach(scotch_lib ${SCOTCH_libs_to_find}) 199 set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND") 200 find_library(SCOTCH_${scotch_lib}_LIBRARY 201 NAMES ${scotch_lib} 202 HINTS ${SCOTCH_DIR} 203 PATH_SUFFIXES lib lib32 lib64) 204 endforeach() 205 else() 206 foreach(scotch_lib ${SCOTCH_libs_to_find}) 207 set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND") 208 find_library(SCOTCH_${scotch_lib}_LIBRARY 209 NAMES ${scotch_lib} 210 HINTS ${_lib_env}) 211 endforeach() 212 endif() 213endif() 214 215set(SCOTCH_LIBRARIES "") 216set(SCOTCH_LIBRARY_DIRS "") 217# If found, add path to cmake variable 218# ------------------------------------ 219foreach(scotch_lib ${SCOTCH_libs_to_find}) 220 221 if (SCOTCH_${scotch_lib}_LIBRARY) 222 get_filename_component(${scotch_lib}_lib_path "${SCOTCH_${scotch_lib}_LIBRARY}" PATH) 223 # set cmake variables 224 list(APPEND SCOTCH_LIBRARIES "${SCOTCH_${scotch_lib}_LIBRARY}") 225 list(APPEND SCOTCH_LIBRARY_DIRS "${${scotch_lib}_lib_path}") 226 else () 227 list(APPEND SCOTCH_LIBRARIES "${SCOTCH_${scotch_lib}_LIBRARY}") 228 if (NOT SCOTCH_FIND_QUIETLY) 229 message(STATUS "Looking for scotch -- lib ${scotch_lib} not found") 230 endif() 231 endif () 232 233 mark_as_advanced(SCOTCH_${scotch_lib}_LIBRARY) 234 235endforeach() 236list(REMOVE_DUPLICATES SCOTCH_LIBRARY_DIRS) 237 238# check a function to validate the find 239if(SCOTCH_LIBRARIES) 240 241 set(REQUIRED_INCDIRS) 242 set(REQUIRED_LIBDIRS) 243 set(REQUIRED_LIBS) 244 245 # SCOTCH 246 if (SCOTCH_INCLUDE_DIRS) 247 set(REQUIRED_INCDIRS "${SCOTCH_INCLUDE_DIRS}") 248 endif() 249 if (SCOTCH_LIBRARY_DIRS) 250 set(REQUIRED_LIBDIRS "${SCOTCH_LIBRARY_DIRS}") 251 endif() 252 set(REQUIRED_LIBS "${SCOTCH_LIBRARIES}") 253 # THREADS 254 if(CMAKE_THREAD_LIBS_INIT) 255 list(APPEND REQUIRED_LIBS "${CMAKE_THREAD_LIBS_INIT}") 256 endif() 257 set(Z_LIBRARY "Z_LIBRARY-NOTFOUND") 258 find_library(Z_LIBRARY NAMES z) 259 mark_as_advanced(Z_LIBRARY) 260 if(Z_LIBRARY) 261 list(APPEND REQUIRED_LIBS "-lz") 262 endif() 263 set(M_LIBRARY "M_LIBRARY-NOTFOUND") 264 find_library(M_LIBRARY NAMES m) 265 mark_as_advanced(M_LIBRARY) 266 if(M_LIBRARY) 267 list(APPEND REQUIRED_LIBS "-lm") 268 endif() 269 set(RT_LIBRARY "RT_LIBRARY-NOTFOUND") 270 find_library(RT_LIBRARY NAMES rt) 271 mark_as_advanced(RT_LIBRARY) 272 if(RT_LIBRARY) 273 list(APPEND REQUIRED_LIBS "-lrt") 274 endif() 275 276 # set required libraries for link 277 set(CMAKE_REQUIRED_INCLUDES "${REQUIRED_INCDIRS}") 278 set(CMAKE_REQUIRED_LIBRARIES) 279 foreach(lib_dir ${REQUIRED_LIBDIRS}) 280 list(APPEND CMAKE_REQUIRED_LIBRARIES "-L${lib_dir}") 281 endforeach() 282 list(APPEND CMAKE_REQUIRED_LIBRARIES "${REQUIRED_LIBS}") 283 string(REGEX REPLACE "^ -" "-" CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}") 284 285 # test link 286 unset(SCOTCH_WORKS CACHE) 287 include(CheckFunctionExists) 288 check_function_exists(SCOTCH_graphInit SCOTCH_WORKS) 289 mark_as_advanced(SCOTCH_WORKS) 290 291 if(SCOTCH_WORKS) 292 # save link with dependencies 293 set(SCOTCH_LIBRARIES "${REQUIRED_LIBS}") 294 else() 295 if(NOT SCOTCH_FIND_QUIETLY) 296 message(STATUS "Looking for SCOTCH : test of SCOTCH_graphInit with SCOTCH library fails") 297 message(STATUS "CMAKE_REQUIRED_LIBRARIES: ${CMAKE_REQUIRED_LIBRARIES}") 298 message(STATUS "CMAKE_REQUIRED_INCLUDES: ${CMAKE_REQUIRED_INCLUDES}") 299 message(STATUS "Check in CMakeFiles/CMakeError.log to figure out why it fails") 300 endif() 301 endif() 302 set(CMAKE_REQUIRED_INCLUDES) 303 set(CMAKE_REQUIRED_FLAGS) 304 set(CMAKE_REQUIRED_LIBRARIES) 305endif() 306 307if (SCOTCH_LIBRARIES) 308 list(GET SCOTCH_LIBRARIES 0 first_lib) 309 get_filename_component(first_lib_path "${first_lib}" PATH) 310 if (${first_lib_path} MATCHES "/lib(32|64)?$") 311 string(REGEX REPLACE "/lib(32|64)?$" "" not_cached_dir "${first_lib_path}") 312 set(SCOTCH_DIR_FOUND "${not_cached_dir}" CACHE PATH "Installation directory of SCOTCH library" FORCE) 313 else() 314 set(SCOTCH_DIR_FOUND "${first_lib_path}" CACHE PATH "Installation directory of SCOTCH library" FORCE) 315 endif() 316endif() 317mark_as_advanced(SCOTCH_DIR) 318mark_as_advanced(SCOTCH_DIR_FOUND) 319 320# Check the size of SCOTCH_Num 321# --------------------------------- 322set(CMAKE_REQUIRED_INCLUDES ${SCOTCH_INCLUDE_DIRS}) 323 324include(CheckCSourceRuns) 325#stdio.h and stdint.h should be included by scotch.h directly 326set(SCOTCH_C_TEST_SCOTCH_Num_4 " 327#include <stdio.h> 328#include <stdint.h> 329#include <scotch.h> 330int main(int argc, char **argv) { 331 if (sizeof(SCOTCH_Num) == 4) 332 return 0; 333 else 334 return 1; 335} 336") 337 338set(SCOTCH_C_TEST_SCOTCH_Num_8 " 339#include <stdio.h> 340#include <stdint.h> 341#include <scotch.h> 342int main(int argc, char **argv) { 343 if (sizeof(SCOTCH_Num) == 8) 344 return 0; 345 else 346 return 1; 347} 348") 349check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_4}" SCOTCH_Num_4) 350if(NOT SCOTCH_Num_4) 351 check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_8}" SCOTCH_Num_8) 352 if(NOT SCOTCH_Num_8) 353 set(SCOTCH_INTSIZE -1) 354 else() 355 set(SCOTCH_INTSIZE 8) 356 endif() 357else() 358 set(SCOTCH_INTSIZE 4) 359endif() 360set(CMAKE_REQUIRED_INCLUDES "") 361 362# check that SCOTCH has been found 363# --------------------------------- 364include(FindPackageHandleStandardArgs) 365find_package_handle_standard_args(SCOTCH DEFAULT_MSG 366 SCOTCH_LIBRARIES 367 SCOTCH_WORKS) 368# 369# TODO: Add possibility to check for specific functions in the library 370# 371