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) 2012-2016 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 PTSCOTCH include dirs and libraries 12# Use this module by invoking find_package with the form: 13# find_package(PTSCOTCH 14# [REQUIRED] # Fail with error if ptscotch is not found 15# [COMPONENTS <comp1> <comp2> ...] # dependencies 16# ) 17# 18# PTSCOTCH depends on the following libraries: 19# - Threads 20# - MPI 21# 22# COMPONENTS can be some of the following: 23# - ESMUMPS: to activate detection of PT-Scotch with the esmumps interface 24# 25# This module finds headers and ptscotch library. 26# Results are reported in variables: 27# PTSCOTCH_FOUND - True if headers and requested libraries were found 28# PTSCOTCH_LINKER_FLAGS - list of required linker flags (excluding -l and -L) 29# PTSCOTCH_INCLUDE_DIRS - ptscotch include directories 30# PTSCOTCH_LIBRARY_DIRS - Link directories for ptscotch libraries 31# PTSCOTCH_LIBRARIES - ptscotch component libraries to be linked 32# PTSCOTCH_INCLUDE_DIRS_DEP - ptscotch + dependencies include directories 33# PTSCOTCH_LIBRARY_DIRS_DEP - ptscotch + dependencies link directories 34# PTSCOTCH_LIBRARIES_DEP - ptscotch libraries + dependencies 35# PTSCOTCH_INTSIZE - Number of octets occupied by a SCOTCH_Num 36# 37# The user can give specific paths where to find the libraries adding cmake 38# options at configure (ex: cmake path/to/project -DPTSCOTCH=path/to/ptscotch): 39# PTSCOTCH_DIR - Where to find the base directory of ptscotch 40# PTSCOTCH_INCDIR - Where to find the header files 41# PTSCOTCH_LIBDIR - Where to find the library files 42# The module can also look for the following environment variables if paths 43# are not given as cmake variable: PTSCOTCH_DIR, PTSCOTCH_INCDIR, PTSCOTCH_LIBDIR 44 45#============================================================================= 46# Copyright 2012-2013 Inria 47# Copyright 2012-2013 Emmanuel Agullo 48# Copyright 2012-2013 Mathieu Faverge 49# Copyright 2012 Cedric Castagnede 50# Copyright 2013-2016 Florent Pruvost 51# 52# Distributed under the OSI-approved BSD License (the "License"); 53# see accompanying file MORSE-Copyright.txt for details. 54# 55# This software is distributed WITHOUT ANY WARRANTY; without even the 56# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 57# See the License for more information. 58#============================================================================= 59# (To distribute this file outside of Morse, substitute the full 60# License text for the above reference.) 61 62if (NOT PTSCOTCH_FOUND) 63 set(PTSCOTCH_DIR "" CACHE PATH "Installation directory of PTSCOTCH library") 64 if (NOT PTSCOTCH_FIND_QUIETLY) 65 message(STATUS "A cache variable, namely PTSCOTCH_DIR, has been set to specify the install directory of PTSCOTCH") 66 endif() 67endif() 68 69# Set the version to find 70set(PTSCOTCH_LOOK_FOR_ESMUMPS OFF) 71 72if( PTSCOTCH_FIND_COMPONENTS ) 73 foreach( component ${PTSCOTCH_FIND_COMPONENTS} ) 74 if (${component} STREQUAL "ESMUMPS") 75 # means we look for esmumps library 76 set(PTSCOTCH_LOOK_FOR_ESMUMPS ON) 77 endif() 78 endforeach() 79endif() 80 81# PTSCOTCH depends on Threads, try to find it 82include(CMakeFindDependencyMacro) 83if (NOT THREADS_FOUND) 84 if (PTSCOTCH_FIND_REQUIRED) 85 find_dependency(Threads REQUIRED) 86 else() 87 find_dependency(Threads) 88 endif() 89endif() 90 91# PTSCOTCH depends on MPI, try to find it 92if (NOT MPI_FOUND) 93 if (PTSCOTCH_FIND_REQUIRED) 94 find_dependency(MPI REQUIRED) 95 else() 96 find_dependency(MPI) 97 endif() 98endif() 99 100# Looking for include 101# ------------------- 102 103# Add system include paths to search include 104# ------------------------------------------ 105unset(_inc_env) 106set(ENV_PTSCOTCH_DIR "$ENV{PTSCOTCH_DIR}") 107set(ENV_PTSCOTCH_INCDIR "$ENV{PTSCOTCH_INCDIR}") 108if(ENV_PTSCOTCH_INCDIR) 109 list(APPEND _inc_env "${ENV_PTSCOTCH_INCDIR}") 110elseif(ENV_PTSCOTCH_DIR) 111 list(APPEND _inc_env "${ENV_PTSCOTCH_DIR}") 112 list(APPEND _inc_env "${ENV_PTSCOTCH_DIR}/include") 113 list(APPEND _inc_env "${ENV_PTSCOTCH_DIR}/include/ptscotch") 114else() 115 if(WIN32) 116 string(REPLACE ":" ";" _inc_env "$ENV{INCLUDE}") 117 else() 118 string(REPLACE ":" ";" _path_env "$ENV{INCLUDE}") 119 list(APPEND _inc_env "${_path_env}") 120 string(REPLACE ":" ";" _path_env "$ENV{C_INCLUDE_PATH}") 121 list(APPEND _inc_env "${_path_env}") 122 string(REPLACE ":" ";" _path_env "$ENV{CPATH}") 123 list(APPEND _inc_env "${_path_env}") 124 string(REPLACE ":" ";" _path_env "$ENV{INCLUDE_PATH}") 125 list(APPEND _inc_env "${_path_env}") 126 endif() 127endif() 128list(APPEND _inc_env "${CMAKE_PLATFORM_IMPLICIT_INCLUDE_DIRECTORIES}") 129list(APPEND _inc_env "${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}") 130list(REMOVE_DUPLICATES _inc_env) 131 132 133# Try to find the ptscotch header in the given paths 134# ------------------------------------------------- 135 136set(PTSCOTCH_hdrs_to_find "ptscotch.h;scotch.h") 137 138# call cmake macro to find the header path 139if(PTSCOTCH_INCDIR) 140 foreach(ptscotch_hdr ${PTSCOTCH_hdrs_to_find}) 141 set(PTSCOTCH_${ptscotch_hdr}_DIRS "PTSCOTCH_${ptscotch_hdr}_DIRS-NOTFOUND") 142 find_path(PTSCOTCH_${ptscotch_hdr}_DIRS 143 NAMES ${ptscotch_hdr} 144 HINTS ${PTSCOTCH_INCDIR}) 145 mark_as_advanced(PTSCOTCH_${ptscotch_hdr}_DIRS) 146 endforeach() 147else() 148 if(PTSCOTCH_DIR) 149 foreach(ptscotch_hdr ${PTSCOTCH_hdrs_to_find}) 150 set(PTSCOTCH_${ptscotch_hdr}_DIRS "PTSCOTCH_${ptscotch_hdr}_DIRS-NOTFOUND") 151 find_path(PTSCOTCH_${ptscotch_hdr}_DIRS 152 NAMES ${ptscotch_hdr} 153 HINTS ${PTSCOTCH_DIR} 154 PATH_SUFFIXES "include" "include/scotch") 155 mark_as_advanced(PTSCOTCH_${ptscotch_hdr}_DIRS) 156 endforeach() 157 else() 158 foreach(ptscotch_hdr ${PTSCOTCH_hdrs_to_find}) 159 set(PTSCOTCH_${ptscotch_hdr}_DIRS "PTSCOTCH_${ptscotch_hdr}_DIRS-NOTFOUND") 160 find_path(PTSCOTCH_${ptscotch_hdr}_DIRS 161 NAMES ${ptscotch_hdr} 162 HINTS ${_inc_env} 163 PATH_SUFFIXES "scotch") 164 mark_as_advanced(PTSCOTCH_${ptscotch_hdr}_DIRS) 165 endforeach() 166 endif() 167endif() 168 169# If found, add path to cmake variable 170# ------------------------------------ 171foreach(ptscotch_hdr ${PTSCOTCH_hdrs_to_find}) 172 if (PTSCOTCH_${ptscotch_hdr}_DIRS) 173 list(APPEND PTSCOTCH_INCLUDE_DIRS "${PTSCOTCH_${ptscotch_hdr}_DIRS}") 174 else () 175 if (NOT PTSCOTCH_FIND_QUIETLY) 176 message(STATUS "Looking for ptscotch -- ${ptscotch_hdr} not found") 177 endif() 178 endif() 179endforeach() 180list(REMOVE_DUPLICATES PTSCOTCH_INCLUDE_DIRS) 181 182# Looking for lib 183# --------------- 184 185# Add system library paths to search lib 186# -------------------------------------- 187unset(_lib_env) 188set(ENV_PTSCOTCH_LIBDIR "$ENV{PTSCOTCH_LIBDIR}") 189if(ENV_PTSCOTCH_LIBDIR) 190 list(APPEND _lib_env "${ENV_PTSCOTCH_LIBDIR}") 191elseif(ENV_PTSCOTCH_DIR) 192 list(APPEND _lib_env "${ENV_PTSCOTCH_DIR}") 193 list(APPEND _lib_env "${ENV_PTSCOTCH_DIR}/lib") 194else() 195 if(WIN32) 196 string(REPLACE ":" ";" _lib_env "$ENV{LIB}") 197 else() 198 if(APPLE) 199 string(REPLACE ":" ";" _lib_env "$ENV{DYLD_LIBRARY_PATH}") 200 else() 201 string(REPLACE ":" ";" _lib_env "$ENV{LD_LIBRARY_PATH}") 202 endif() 203 list(APPEND _lib_env "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}") 204 list(APPEND _lib_env "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}") 205 endif() 206endif() 207list(REMOVE_DUPLICATES _lib_env) 208 209# Try to find the ptscotch lib in the given paths 210# ---------------------------------------------- 211 212set(PTSCOTCH_libs_to_find "ptscotch;ptscotcherr") 213if (PTSCOTCH_LOOK_FOR_ESMUMPS) 214 list(INSERT PTSCOTCH_libs_to_find 0 "ptesmumps") 215 list(APPEND PTSCOTCH_libs_to_find "esmumps" ) 216endif() 217list(APPEND PTSCOTCH_libs_to_find "scotch;scotcherr") 218 219# call cmake macro to find the lib path 220if(PTSCOTCH_LIBDIR) 221 foreach(ptscotch_lib ${PTSCOTCH_libs_to_find}) 222 set(PTSCOTCH_${ptscotch_lib}_LIBRARY "PTSCOTCH_${ptscotch_lib}_LIBRARY-NOTFOUND") 223 find_library(PTSCOTCH_${ptscotch_lib}_LIBRARY 224 NAMES ${ptscotch_lib} 225 HINTS ${PTSCOTCH_LIBDIR}) 226 endforeach() 227else() 228 if(PTSCOTCH_DIR) 229 foreach(ptscotch_lib ${PTSCOTCH_libs_to_find}) 230 set(PTSCOTCH_${ptscotch_lib}_LIBRARY "PTSCOTCH_${ptscotch_lib}_LIBRARY-NOTFOUND") 231 find_library(PTSCOTCH_${ptscotch_lib}_LIBRARY 232 NAMES ${ptscotch_lib} 233 HINTS ${PTSCOTCH_DIR} 234 PATH_SUFFIXES lib lib32 lib64) 235 endforeach() 236 else() 237 foreach(ptscotch_lib ${PTSCOTCH_libs_to_find}) 238 set(PTSCOTCH_${ptscotch_lib}_LIBRARY "PTSCOTCH_${ptscotch_lib}_LIBRARY-NOTFOUND") 239 find_library(PTSCOTCH_${ptscotch_lib}_LIBRARY 240 NAMES ${ptscotch_lib} 241 HINTS ${_lib_env}) 242 endforeach() 243 endif() 244endif() 245 246set(PTSCOTCH_LIBRARIES "") 247set(PTSCOTCH_LIBRARY_DIRS "") 248# If found, add path to cmake variable 249# ------------------------------------ 250foreach(ptscotch_lib ${PTSCOTCH_libs_to_find}) 251 252 if (PTSCOTCH_${ptscotch_lib}_LIBRARY) 253 get_filename_component(${ptscotch_lib}_lib_path "${PTSCOTCH_${ptscotch_lib}_LIBRARY}" PATH) 254 # set cmake variables 255 list(APPEND PTSCOTCH_LIBRARIES "${PTSCOTCH_${ptscotch_lib}_LIBRARY}") 256 list(APPEND PTSCOTCH_LIBRARY_DIRS "${${ptscotch_lib}_lib_path}") 257 else () 258 if (NOT PTSCOTCH_FIND_QUIETLY) 259 message(STATUS "Looking for ptscotch -- lib ${ptscotch_lib} not found") 260 endif() 261 endif () 262 263 mark_as_advanced(PTSCOTCH_${ptscotch_lib}_LIBRARY) 264 265endforeach() 266list(REMOVE_DUPLICATES PTSCOTCH_LIBRARY_DIRS) 267 268# check a function to validate the find 269if(PTSCOTCH_LIBRARIES) 270 271 set(REQUIRED_LDFLAGS) 272 set(REQUIRED_INCDIRS) 273 set(REQUIRED_LIBDIRS) 274 set(REQUIRED_LIBS) 275 276 # PTSCOTCH 277 if (PTSCOTCH_INCLUDE_DIRS) 278 set(REQUIRED_INCDIRS "${PTSCOTCH_INCLUDE_DIRS}") 279 endif() 280 if (PTSCOTCH_LIBRARY_DIRS) 281 set(REQUIRED_LIBDIRS "${PTSCOTCH_LIBRARY_DIRS}") 282 endif() 283 set(REQUIRED_LIBS "${PTSCOTCH_LIBRARIES}") 284 # MPI 285 if (MPI_FOUND) 286 if (MPI_C_INCLUDE_PATH) 287 list(APPEND CMAKE_REQUIRED_INCLUDES "${MPI_C_INCLUDE_PATH}") 288 endif() 289 if (MPI_C_LINK_FLAGS) 290 if (${MPI_C_LINK_FLAGS} MATCHES " -") 291 string(REGEX REPLACE " -" "-" MPI_C_LINK_FLAGS ${MPI_C_LINK_FLAGS}) 292 endif() 293 list(APPEND REQUIRED_LDFLAGS "${MPI_C_LINK_FLAGS}") 294 endif() 295 list(APPEND REQUIRED_LIBS "${MPI_C_LIBRARIES}") 296 endif() 297 # THREADS 298 if(CMAKE_THREAD_LIBS_INIT) 299 list(APPEND REQUIRED_LIBS "${CMAKE_THREAD_LIBS_INIT}") 300 endif() 301 set(Z_LIBRARY "Z_LIBRARY-NOTFOUND") 302 find_library(Z_LIBRARY NAMES z) 303 mark_as_advanced(Z_LIBRARY) 304 if(Z_LIBRARY) 305 list(APPEND REQUIRED_LIBS "-lz") 306 endif() 307 set(M_LIBRARY "M_LIBRARY-NOTFOUND") 308 find_library(M_LIBRARY NAMES m) 309 mark_as_advanced(M_LIBRARY) 310 if(M_LIBRARY) 311 list(APPEND REQUIRED_LIBS "-lm") 312 endif() 313 set(RT_LIBRARY "RT_LIBRARY-NOTFOUND") 314 find_library(RT_LIBRARY NAMES rt) 315 mark_as_advanced(RT_LIBRARY) 316 if(RT_LIBRARY) 317 list(APPEND REQUIRED_LIBS "-lrt") 318 endif() 319 320 # set required libraries for link 321 set(CMAKE_REQUIRED_INCLUDES "${REQUIRED_INCDIRS}") 322 set(CMAKE_REQUIRED_LIBRARIES) 323 list(APPEND CMAKE_REQUIRED_LIBRARIES "${REQUIRED_LDFLAGS}") 324 foreach(lib_dir ${REQUIRED_LIBDIRS}) 325 list(APPEND CMAKE_REQUIRED_LIBRARIES "-L${lib_dir}") 326 endforeach() 327 list(APPEND CMAKE_REQUIRED_LIBRARIES "${REQUIRED_LIBS}") 328 list(APPEND CMAKE_REQUIRED_FLAGS "${REQUIRED_FLAGS}") 329 string(REGEX REPLACE "^ -" "-" CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}") 330 331 # test link 332 unset(PTSCOTCH_WORKS CACHE) 333 include(CheckFunctionExists) 334 check_function_exists(SCOTCH_dgraphInit PTSCOTCH_WORKS) 335 mark_as_advanced(PTSCOTCH_WORKS) 336 337 if(PTSCOTCH_WORKS) 338 # save link with dependencies 339 set(PTSCOTCH_LIBRARIES_DEP "${REQUIRED_LIBS}") 340 set(PTSCOTCH_LIBRARY_DIRS_DEP "${REQUIRED_LIBDIRS}") 341 set(PTSCOTCH_INCLUDE_DIRS_DEP "${REQUIRED_INCDIRS}") 342 set(PTSCOTCH_LINKER_FLAGS "${REQUIRED_LDFLAGS}") 343 list(REMOVE_DUPLICATES PTSCOTCH_LIBRARY_DIRS_DEP) 344 list(REMOVE_DUPLICATES PTSCOTCH_INCLUDE_DIRS_DEP) 345 list(REMOVE_DUPLICATES PTSCOTCH_LINKER_FLAGS) 346 else() 347 if(NOT PTSCOTCH_FIND_QUIETLY) 348 message(STATUS "Looking for PTSCOTCH : test of SCOTCH_dgraphInit with PTSCOTCH library fails") 349 message(STATUS "CMAKE_REQUIRED_LIBRARIES: ${CMAKE_REQUIRED_LIBRARIES}") 350 message(STATUS "CMAKE_REQUIRED_INCLUDES: ${CMAKE_REQUIRED_INCLUDES}") 351 message(STATUS "Check in CMakeFiles/CMakeError.log to figure out why it fails") 352 endif() 353 endif() 354 set(CMAKE_REQUIRED_INCLUDES) 355 set(CMAKE_REQUIRED_FLAGS) 356 set(CMAKE_REQUIRED_LIBRARIES) 357endif() 358 359if (PTSCOTCH_LIBRARIES) 360 list(GET PTSCOTCH_LIBRARIES 0 first_lib) 361 get_filename_component(first_lib_path "${first_lib}" PATH) 362 if (${first_lib_path} MATCHES "/lib(32|64)?$") 363 string(REGEX REPLACE "/lib(32|64)?$" "" not_cached_dir "${first_lib_path}") 364 set(PTSCOTCH_DIR_FOUND "${not_cached_dir}" CACHE PATH "Installation directory of PTSCOTCH library" FORCE) 365 else() 366 set(PTSCOTCH_DIR_FOUND "${first_lib_path}" CACHE PATH "Installation directory of PTSCOTCH library" FORCE) 367 endif() 368endif() 369mark_as_advanced(PTSCOTCH_DIR) 370mark_as_advanced(PTSCOTCH_DIR_FOUND) 371 372# Check the size of SCOTCH_Num 373# --------------------------------- 374set(CMAKE_REQUIRED_INCLUDES ${PTSCOTCH_INCLUDE_DIRS}) 375 376include(CheckCSourceRuns) 377#stdio.h and stdint.h should be included by scotch.h directly 378set(PTSCOTCH_C_TEST_SCOTCH_Num_4 " 379#include <stdio.h> 380#include <stdint.h> 381#include <ptscotch.h> 382int main(int argc, char **argv) { 383 if (sizeof(SCOTCH_Num) == 4) 384 return 0; 385 else 386 return 1; 387} 388") 389 390set(PTSCOTCH_C_TEST_SCOTCH_Num_8 " 391#include <stdio.h> 392#include <stdint.h> 393#include <ptscotch.h> 394int main(int argc, char **argv) { 395 if (sizeof(SCOTCH_Num) == 8) 396 return 0; 397 else 398 return 1; 399} 400") 401check_c_source_runs("${PTSCOTCH_C_TEST_SCOTCH_Num_4}" PTSCOTCH_Num_4) 402if(NOT PTSCOTCH_Num_4) 403 check_c_source_runs("${PTSCOTCH_C_TEST_SCOTCH_Num_8}" PTSCOTCH_Num_8) 404 if(NOT PTSCOTCH_Num_8) 405 set(PTSCOTCH_INTSIZE -1) 406 else() 407 set(PTSCOTCH_INTSIZE 8) 408 endif() 409else() 410 set(PTSCOTCH_INTSIZE 4) 411endif() 412set(CMAKE_REQUIRED_INCLUDES "") 413 414# check that PTSCOTCH has been found 415# --------------------------------- 416include(FindPackageHandleStandardArgs) 417find_package_handle_standard_args(PTSCOTCH DEFAULT_MSG 418 PTSCOTCH_LIBRARIES 419 PTSCOTCH_WORKS) 420# 421# TODO: Add possibility to check for specific functions in the library 422# 423