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 54 if (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() 59 endif() 60 61 # Set the version to find 62 set(SCOTCH_LOOK_FOR_ESMUMPS OFF) 63 64 if( 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() 71 endif() 72 73 # SCOTCH may depend on Threads, try to find it 74 if (NOT THREADS_FOUND) 75 if (SCOTCH_FIND_REQUIRED) 76 find_package(Threads REQUIRED) 77 else() 78 find_package(Threads) 79 endif() 80 endif() 81 82 # Looking for include 83 # ------------------- 84 85 # Add system include paths to search include 86 # ------------------------------------------ 87 unset(_inc_env) 88 set(ENV_SCOTCH_DIR "$ENV{SCOTCH_DIR}") 89 set(ENV_SCOTCH_INCDIR "$ENV{SCOTCH_INCDIR}") 90 if(ENV_SCOTCH_INCDIR) 91 list(APPEND _inc_env "${ENV_SCOTCH_INCDIR}") 92 elseif(ENV_SCOTCH_DIR) 93 list(APPEND _inc_env "${ENV_SCOTCH_DIR}") 94 list(APPEND _inc_env "${ENV_SCOTCH_DIR}/include") 95 list(APPEND _inc_env "${ENV_SCOTCH_DIR}/include/scotch") 96 else() 97 if(WIN32) 98 string(REPLACE ":" ";" _inc_env "$ENV{INCLUDE}") 99 else() 100 string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}") 101 list(APPEND _inc_env "${_path_env}") 102 string(REPLACE ":" ";" _path_env "$ENV{C_INCLUDE_PATH}") 103 list(APPEND _inc_env "${_path_env}") 104 string(REPLACE ":" ";" _path_env "$ENV{CPATH}") 105 list(APPEND _inc_env "${_path_env}") 106 string(REPLACE ":" ";" _path_env "$ENV{INCLUDE_PATH}") 107 list(APPEND _inc_env "${_path_env}") 108 endif() 109 endif() 110 list(APPEND _inc_env "${CMAKE_PLATFORM_IMPLICIT_INCLUDE_DIRECTORIES}") 111 list(APPEND _inc_env "${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}") 112 list(REMOVE_DUPLICATES _inc_env) 113 114 115 # Try to find the scotch header in the given paths 116 # ------------------------------------------------- 117 # call cmake macro to find the header path 118 if(SCOTCH_INCDIR) 119 set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND") 120 find_path(SCOTCH_scotch.h_DIRS 121 NAMES scotch.h 122 HINTS ${SCOTCH_INCDIR}) 123 else() 124 if(SCOTCH_DIR) 125 set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND") 126 find_path(SCOTCH_scotch.h_DIRS 127 NAMES scotch.h 128 HINTS ${SCOTCH_DIR} 129 PATH_SUFFIXES "include" "include/scotch") 130 else() 131 set(SCOTCH_scotch.h_DIRS "SCOTCH_scotch.h_DIRS-NOTFOUND") 132 find_path(SCOTCH_scotch.h_DIRS 133 NAMES scotch.h 134 HINTS ${_inc_env} 135 PATH_SUFFIXES "scotch") 136 endif() 137 endif() 138 mark_as_advanced(SCOTCH_scotch.h_DIRS) 139 140 # If found, add path to cmake variable 141 # ------------------------------------ 142 if (SCOTCH_scotch.h_DIRS) 143 set(SCOTCH_INCLUDE_DIRS "${SCOTCH_scotch.h_DIRS}") 144 else () 145 set(SCOTCH_INCLUDE_DIRS "SCOTCH_INCLUDE_DIRS-NOTFOUND") 146 if (NOT SCOTCH_FIND_QUIETLY) 147 message(STATUS "Looking for scotch -- scotch.h not found") 148 endif() 149 endif() 150 list(REMOVE_DUPLICATES SCOTCH_INCLUDE_DIRS) 151 152 # Looking for lib 153 # --------------- 154 155 # Add system library paths to search lib 156 # -------------------------------------- 157 unset(_lib_env) 158 set(ENV_SCOTCH_LIBDIR "$ENV{SCOTCH_LIBDIR}") 159 if(ENV_SCOTCH_LIBDIR) 160 list(APPEND _lib_env "${ENV_SCOTCH_LIBDIR}") 161 elseif(ENV_SCOTCH_DIR) 162 list(APPEND _lib_env "${ENV_SCOTCH_DIR}") 163 list(APPEND _lib_env "${ENV_SCOTCH_DIR}/lib") 164 else() 165 if(WIN32) 166 string(REPLACE ":" ";" _lib_env "$ENV{LIB}") 167 else() 168 if(APPLE) 169 string(REPLACE ":" ";" _lib_env "$ENV{DYLD_LIBRARY_PATH}") 170 else() 171 string(REPLACE ":" ";" _lib_env "$ENV{LD_LIBRARY_PATH}") 172 endif() 173 list(APPEND _lib_env "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}") 174 list(APPEND _lib_env "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}") 175 endif() 176 endif() 177 list(REMOVE_DUPLICATES _lib_env) 178 179 # Try to find the scotch lib in the given paths 180 # ---------------------------------------------- 181 182 set(SCOTCH_libs_to_find "scotch;scotcherrexit") 183 if (SCOTCH_LOOK_FOR_ESMUMPS) 184 list(INSERT SCOTCH_libs_to_find 0 "esmumps") 185 endif() 186 187 # call cmake macro to find the lib path 188 if(SCOTCH_LIBDIR) 189 foreach(scotch_lib ${SCOTCH_libs_to_find}) 190 set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND") 191 find_library(SCOTCH_${scotch_lib}_LIBRARY 192 NAMES ${scotch_lib} 193 HINTS ${SCOTCH_LIBDIR}) 194 endforeach() 195 else() 196 if(SCOTCH_DIR) 197 foreach(scotch_lib ${SCOTCH_libs_to_find}) 198 set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND") 199 find_library(SCOTCH_${scotch_lib}_LIBRARY 200 NAMES ${scotch_lib} 201 HINTS ${SCOTCH_DIR} 202 PATH_SUFFIXES lib lib32 lib64) 203 endforeach() 204 else() 205 foreach(scotch_lib ${SCOTCH_libs_to_find}) 206 set(SCOTCH_${scotch_lib}_LIBRARY "SCOTCH_${scotch_lib}_LIBRARY-NOTFOUND") 207 find_library(SCOTCH_${scotch_lib}_LIBRARY 208 NAMES ${scotch_lib} 209 HINTS ${_lib_env}) 210 endforeach() 211 endif() 212 endif() 213 214 set(SCOTCH_LIBRARIES "") 215 set(SCOTCH_LIBRARY_DIRS "") 216 # If found, add path to cmake variable 217 # ------------------------------------ 218 foreach(scotch_lib ${SCOTCH_libs_to_find}) 219 220 if (SCOTCH_${scotch_lib}_LIBRARY) 221 get_filename_component(${scotch_lib}_lib_path "${SCOTCH_${scotch_lib}_LIBRARY}" PATH) 222 # set cmake variables 223 list(APPEND SCOTCH_LIBRARIES "${SCOTCH_${scotch_lib}_LIBRARY}") 224 list(APPEND SCOTCH_LIBRARY_DIRS "${${scotch_lib}_lib_path}") 225 else () 226 list(APPEND SCOTCH_LIBRARIES "${SCOTCH_${scotch_lib}_LIBRARY}") 227 if (NOT SCOTCH_FIND_QUIETLY) 228 message(STATUS "Looking for scotch -- lib ${scotch_lib} not found") 229 endif() 230 endif () 231 232 mark_as_advanced(SCOTCH_${scotch_lib}_LIBRARY) 233 234 endforeach() 235 list(REMOVE_DUPLICATES SCOTCH_LIBRARY_DIRS) 236 237 # check a function to validate the find 238 if(SCOTCH_LIBRARIES) 239 240 set(REQUIRED_INCDIRS) 241 set(REQUIRED_LIBDIRS) 242 set(REQUIRED_LIBS) 243 244 # SCOTCH 245 if (SCOTCH_INCLUDE_DIRS) 246 set(REQUIRED_INCDIRS "${SCOTCH_INCLUDE_DIRS}") 247 endif() 248 if (SCOTCH_LIBRARY_DIRS) 249 set(REQUIRED_LIBDIRS "${SCOTCH_LIBRARY_DIRS}") 250 endif() 251 set(REQUIRED_LIBS "${SCOTCH_LIBRARIES}") 252 # THREADS 253 if(CMAKE_THREAD_LIBS_INIT) 254 list(APPEND REQUIRED_LIBS "${CMAKE_THREAD_LIBS_INIT}") 255 endif() 256 set(Z_LIBRARY "Z_LIBRARY-NOTFOUND") 257 find_library(Z_LIBRARY NAMES z) 258 mark_as_advanced(Z_LIBRARY) 259 if(Z_LIBRARY) 260 list(APPEND REQUIRED_LIBS "-lz") 261 endif() 262 set(M_LIBRARY "M_LIBRARY-NOTFOUND") 263 find_library(M_LIBRARY NAMES m) 264 mark_as_advanced(M_LIBRARY) 265 if(M_LIBRARY) 266 list(APPEND REQUIRED_LIBS "-lm") 267 endif() 268 set(RT_LIBRARY "RT_LIBRARY-NOTFOUND") 269 find_library(RT_LIBRARY NAMES rt) 270 mark_as_advanced(RT_LIBRARY) 271 if(RT_LIBRARY) 272 list(APPEND REQUIRED_LIBS "-lrt") 273 endif() 274 275 # set required libraries for link 276 set(CMAKE_REQUIRED_INCLUDES "${REQUIRED_INCDIRS}") 277 set(CMAKE_REQUIRED_LIBRARIES) 278 foreach(lib_dir ${REQUIRED_LIBDIRS}) 279 list(APPEND CMAKE_REQUIRED_LIBRARIES "-L${lib_dir}") 280 endforeach() 281 list(APPEND CMAKE_REQUIRED_LIBRARIES "${REQUIRED_LIBS}") 282 string(REGEX REPLACE "^ -" "-" CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}") 283 284 # test link 285 unset(SCOTCH_WORKS CACHE) 286 include(CheckFunctionExists) 287 check_function_exists(SCOTCH_graphInit SCOTCH_WORKS) 288 mark_as_advanced(SCOTCH_WORKS) 289 290 if(SCOTCH_WORKS) 291 # save link with dependencies 292 set(SCOTCH_LIBRARIES "${REQUIRED_LIBS}") 293 else() 294 if(NOT SCOTCH_FIND_QUIETLY) 295 message(STATUS "Looking for SCOTCH : test of SCOTCH_graphInit with SCOTCH library fails") 296 message(STATUS "CMAKE_REQUIRED_LIBRARIES: ${CMAKE_REQUIRED_LIBRARIES}") 297 message(STATUS "CMAKE_REQUIRED_INCLUDES: ${CMAKE_REQUIRED_INCLUDES}") 298 message(STATUS "Check in CMakeFiles/CMakeError.log to figure out why it fails") 299 endif() 300 endif() 301 set(CMAKE_REQUIRED_INCLUDES) 302 set(CMAKE_REQUIRED_FLAGS) 303 set(CMAKE_REQUIRED_LIBRARIES) 304 endif(SCOTCH_LIBRARIES) 305 306 if (SCOTCH_LIBRARIES) 307 list(GET SCOTCH_LIBRARIES 0 first_lib) 308 get_filename_component(first_lib_path "${first_lib}" PATH) 309 if (${first_lib_path} MATCHES "/lib(32|64)?$") 310 string(REGEX REPLACE "/lib(32|64)?$" "" not_cached_dir "${first_lib_path}") 311 set(SCOTCH_DIR_FOUND "${not_cached_dir}" CACHE PATH "Installation directory of SCOTCH library" FORCE) 312 else() 313 set(SCOTCH_DIR_FOUND "${first_lib_path}" CACHE PATH "Installation directory of SCOTCH library" FORCE) 314 endif() 315 endif() 316 mark_as_advanced(SCOTCH_DIR) 317 mark_as_advanced(SCOTCH_DIR_FOUND) 318 319 # Check the size of SCOTCH_Num 320 # --------------------------------- 321 set(CMAKE_REQUIRED_INCLUDES ${SCOTCH_INCLUDE_DIRS}) 322 323 include(CheckCSourceRuns) 324 #stdio.h and stdint.h should be included by scotch.h directly 325 set(SCOTCH_C_TEST_SCOTCH_Num_4 " 326 #include <stdio.h> 327 #include <stdint.h> 328 #include <scotch.h> 329 int main(int argc, char **argv) { 330 if (sizeof(SCOTCH_Num) == 4) 331 return 0; 332 else 333 return 1; 334 } 335 ") 336 337 set(SCOTCH_C_TEST_SCOTCH_Num_8 " 338 #include <stdio.h> 339 #include <stdint.h> 340 #include <scotch.h> 341 int main(int argc, char **argv) { 342 if (sizeof(SCOTCH_Num) == 8) 343 return 0; 344 else 345 return 1; 346 } 347 ") 348 check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_4}" SCOTCH_Num_4) 349 if(NOT SCOTCH_Num_4) 350 check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_8}" SCOTCH_Num_8) 351 if(NOT SCOTCH_Num_8) 352 set(SCOTCH_INTSIZE -1) 353 else() 354 set(SCOTCH_INTSIZE 8) 355 endif() 356 else() 357 set(SCOTCH_INTSIZE 4) 358 endif() 359 set(CMAKE_REQUIRED_INCLUDES "") 360 361 # check that SCOTCH has been found 362 # --------------------------------- 363 include(FindPackageHandleStandardArgs) 364 find_package_handle_standard_args(SCOTCH DEFAULT_MSG 365 SCOTCH_LIBRARIES 366 SCOTCH_WORKS) 367 # 368 # TODO: Add possibility to check for specific functions in the library 369 # 370
