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# - Try to find CHOLMOD
# This will define
#
# CHOLMOD_FOUND - system has CHOLMOD
# CHOLMOD_LIBRARIES - library to link against to use Cholmod
# CHOLMOD_INCLUDE_DIR - where to find cholmod.h, etc.
# AMD_LIBRARY - needed by CHOLMOD
# COLAMD_LIBRARY - needed by CHOLMOD
# CCOLAMD_LIBRARY - needed by CHOLMOD
# CAMD_LIBRARY - needed by CHOLMOD
FIND_LIBRARY(CHOLMOD_LIBRARIES NAMES cholmod libcholmod HINTS ${SUITESPARSE_PREFIX_PATH}/lib)
FIND_LIBRARY(AMD_LIBRARY NAMES amd libamd HINTS ${SUITESPARSE_PREFIX_PATH}/lib)
FIND_LIBRARY(CAMD_LIBRARY NAMES camd libcamd HINTS ${SUITESPARSE_PREFIX_PATH}/lib)
FIND_LIBRARY(COLAMD_LIBRARY NAMES colamd libcolamd HINTS ${SUITESPARSE_PREFIX_PATH}/lib)
FIND_LIBRARY(CCOLAMD_LIBRARY NAMES ccolamd libccolamd HINTS ${SUITESPARSE_PREFIX_PATH}/lib)
FIND_LIBRARY(SUITESPARSECONFIG_LIBRARY NAMES suitesparseconfig libsuitesparseconfig HINTS ${SUITESPARSE_PREFIX_PATH}/lib)
FIND_PATH(CHOLMOD_INCLUDE_DIR cholmod.h HINTS ${SUITESPARSE_PREFIX_PATH}/include PATH /usr/include /usr/include/suitesparse)
# Check the suitesparse library version and set #ifdefs accordingly
if (CHOLMOD_INCLUDE_DIR AND CHOLMOD_LIBRARIES)
# SuiteSparse version >= 4.
set(SUITESPARSE_VERSION_FILE
${CHOLMOD_INCLUDE_DIR}/SuiteSparse_config.h)
if (NOT EXISTS ${SUITESPARSE_VERSION_FILE})
MESSAGE(STATUS "Could not find file ${SUITESPARSE_VERSION_FILE} containing version information for SuiteSparse version >=4. Direct CHOLMOD solver for CPU will be deactivated.")
else (NOT EXISTS ${SUITESPARSE_VERSION_FILE})
file(READ ${SUITESPARSE_VERSION_FILE} SUITESPARSE_CONFIG_CONTENTS)
string(REGEX MATCH "#define SUITESPARSE_MAIN_VERSION[ ]+[0-9]+"
SUITESPARSE_MAIN_VERSION "${SUITESPARSE_CONFIG_CONTENTS}")
string(REGEX REPLACE "#define SUITESPARSE_MAIN_VERSION[ ]+([0-9]+)" "\\1"
SUITESPARSE_MAIN_VERSION "${SUITESPARSE_MAIN_VERSION}")
string(REGEX MATCH "#define SUITESPARSE_SUB_VERSION[ ]+[0-9]+"
SUITESPARSE_SUB_VERSION "${SUITESPARSE_CONFIG_CONTENTS}")
string(REGEX REPLACE "#define SUITESPARSE_SUB_VERSION[ ]+([0-9]+)" "\\1"
SUITESPARSE_SUB_VERSION "${SUITESPARSE_SUB_VERSION}")
string(REGEX MATCH "#define SUITESPARSE_SUBSUB_VERSION[ ]+[0-9]+"
SUITESPARSE_SUBSUB_VERSION "${SUITESPARSE_CONFIG_CONTENTS}")
string(REGEX REPLACE "#define SUITESPARSE_SUBSUB_VERSION[ ]+([0-9]+)" "\\1"
SUITESPARSE_SUBSUB_VERSION "${SUITESPARSE_SUBSUB_VERSION}")
set(SUITESPARSE_VERSION
"${SUITESPARSE_MAIN_VERSION}.${SUITESPARSE_SUB_VERSION}.${SUITESPARSE_SUBSUB_VERSION}")
MESSAGE(STATUS "SuiteSparse version ${SUITESPARSE_VERSION} found, CHOLMOD direct solver for CPU activated.")
endif (NOT EXISTS ${SUITESPARSE_VERSION_FILE})
endif (CHOLMOD_INCLUDE_DIR AND CHOLMOD_LIBRARIES)
if ((SUITESPARSE_MAIN_VERSION GREATER 4) OR (SUITESPARSE_MAIN_VERSION EQUAL 4))
ADD_DEFINITIONS("-DSUITESPARSE_VERSION_4")
endif ((SUITESPARSE_MAIN_VERSION GREATER 4) OR (SUITESPARSE_MAIN_VERSION EQUAL 4))
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Cholmod DEFAULT_MSG CHOLMOD_LIBRARIES CHOLMOD_INCLUDE_DIR AMD_LIBRARY CAMD_LIBRARY COLAMD_LIBRARY CCOLAMD_LIBRARY SUITESPARSECONFIG_LIBRARY)
MARK_AS_ADVANCED(CHOLMOD_LIBRARIES CHOLMOD_INCLUDE_DIR AMD_LIBRARY CAMD_LIBRARY COLAMD_LIBRARY CCOLAMD_LIBRARY SUITESPARSECONFIG_LIBRARY)
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