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# -*-cmake-*-
#
# Try to find the libzoltan graph partioning library
#
# Once done, this will define:
#
# ZOLTAN_FOUND - system has the libzoltan graph partioning library
# HAVE_ZOLTAN - like ZOLTAN_FOUND, but for the inclusion in config.h
# ZOLTAN_INCLUDE_DIR - incude paths to use libzoltan
# ZOLTAN_LIBRARIES - Link these to use libzoltan
set(ZOLTAN_SEARCH_PATH "/usr" "/usr/local" "/opt" "/opt/local")
set(ZOLTAN_NO_DEFAULT_PATH "")
if(ZOLTAN_ROOT)
set(ZOLTAN_SEARCH_PATH "${ZOLTAN_ROOT}")
set(ZOLTAN_NO_DEFAULT_PATH "NO_DEFAULT_PATH")
endif()
# We only need zoltan with MPI. Otherwise usage of alugrid is broken.
find_package(MPI)
# Make sure we have checked for the underlying partitioners.
find_package(PTScotch)
#find_package(ParMETIS)
# search for files which implements this module
find_path (ZOLTAN_INCLUDE_DIR
NAMES "zoltan.h"
HINTS $ENV{MPI_INCLUDE}
PATHS ${ZOLTAN_SEARCH_PATH}
PATH_SUFFIXES include trilinos
${ZOLTAN_NO_DEFAULT_PATH})
# only search in architecture-relevant directory
if (CMAKE_SIZEOF_VOID_P)
math (EXPR _BITS "8 * ${CMAKE_SIZEOF_VOID_P}")
endif (CMAKE_SIZEOF_VOID_P)
find_library(ZOLTAN_LIBRARY
NAMES zoltan trilinos_zoltan
HINTS $ENV{MPI_LIB}
PATHS ${ZOLTAN_SEARCH_PATH}
PATH_SUFFIXES "lib/.libs" "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
${ZOLTAN_NO_DEFAULT_PATH})
set (ZOLTAN_FOUND FALSE)
set (ZOLTAN_CONFIG_VAR HAVE_ZOLTAN)
# print a message to indicate status of this package
include (FindPackageHandleStandardArgs)
find_package_handle_standard_args(ZOLTAN
DEFAULT_MSG
ZOLTAN_LIBRARY
ZOLTAN_INCLUDE_DIR
MPI_FOUND
)
if (ZOLTAN_FOUND)
set(HAVE_ZOLTAN 1)
set(ZOLTAN_LIBRARIES ${ZOLTAN_LIBRARY} ${PARMETIS_LIBRARIES} ${PTSCOTCH_LIBRARIES})
set(ZOLTAN_INCLUDE_DIRS ${ZOLTAN_INCLUDE_DIR} ${PARMETIS_INCLUDE_DIRS}
${PTSCOTCH_INCLUDE_DIRS})
# log result
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determing location of ZOLTAN succeeded:\n"
" Include directory: ${ZOLTAN_INCLUDE_DIRS}\n"
" Library directory: ${ZOLTAN_LIBRARIES}\n\n")
endif()
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