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# - Try to find Graphviz
# Once done this will define
#
# GRAPHVIZ_FOUND - system has Graphviz
# GRAPHVIZ_INCLUDE_DIRS - Graphviz include directories
# GRAPHVIZ_CDT_LIBRARY - Graphviz CDT library
# GRAPHVIZ_GVC_LIBRARY - Graphviz GVC library
# GRAPHVIZ_CGRAPH_LIBRARY - Graphviz CGRAPH library
# GRAPHVIZ_PATHPLAN_LIBRARY - Graphviz PATHPLAN library
# GRAPHVIZ_VERSION - Graphviz version
#
# This module reads hints about search locations from the following cmake variables:
# GRAPHVIZ_ROOT - Graphviz installation prefix
# (containing bin/, include/, etc.)
# Copyright (c) 2009, Adrien Bustany, <madcat@mymadcat.com>
# Copyright (c) 2013-2014 Kevin Funk <kevin.funk@kdab.com>
# Version computation and some cleanups by Allen Winter <allen.winter@kdab.com>
# Copyright (c) 2012-2014 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
# Simplified script by Dogan Can <dogancan@usc.edu>
# Copyright (c) 2014 University of Southern California
# Redistribution and use is allowed according to the terms of the GPLv3+ license.
if(GRAPHVIZ_ROOT)
set(_GRAPHVIZ_INCLUDE_DIR ${GRAPHVIZ_ROOT}/include)
set(_GRAPHVIZ_LIBRARY_DIR ${GRAPHVIZ_ROOT}/lib)
endif()
find_path(GRAPHVIZ_INCLUDE_DIR NAMES graphviz/cgraph.h
HINTS ${_GRAPHVIZ_INCLUDE_DIR})
find_library(GRAPHVIZ_CDT_LIBRARY NAMES cdt
HINTS ${_GRAPHVIZ_LIBRARY_DIR} ${GRAPHVIZ_ROOT}/lib64 )
find_library(GRAPHVIZ_GVC_LIBRARY NAMES gvc
HINTS ${_GRAPHVIZ_LIBRARY_DIR} ${GRAPHVIZ_ROOT}/lib64 )
find_library(GRAPHVIZ_CGRAPH_LIBRARY NAMES cgraph
HINTS ${_GRAPHVIZ_LIBRARY_DIR} ${GRAPHVIZ_ROOT}/lib64 )
find_library(GRAPHVIZ_PATHPLAN_LIBRARY NAMES pathplan
HINTS ${_GRAPHVIZ_LIBRARY_DIR} ${GRAPHVIZ_ROOT}/lib64 )
find_library(GRAPHVIZ_GRAPH_LIBRARY NAMES graph
HINTS ${_GRAPHVIZ_LIBRARY_DIR} ${GRAPHVIZ_ROOT}/lib64 )
if(GRAPHVIZ_INCLUDE_DIR AND GRAPHVIZ_CDT_LIBRARY AND GRAPHVIZ_GVC_LIBRARY
AND GRAPHVIZ_CGRAPH_LIBRARY AND GRAPHVIZ_PATHPLAN_LIBRARY)
set(GRAPHVIZ_FOUND TRUE)
else()
set(GRAPHVIZ_FOUND FALSE)
endif()
# Ok, now compute the version
if(GRAPHVIZ_FOUND)
set(FIND_GRAPHVIZ_VERSION_SOURCE
"#include <graphviz/graphviz_version.h>\n#include <stdio.h>\n int main()\n {\n printf(\"%s\",PACKAGE_VERSION);return 1;\n }\n")
set(FIND_GRAPHVIZ_VERSION_SOURCE_FILE ${CMAKE_BINARY_DIR}/CMakeTmp/FindGRAPHVIZ.cxx)
file(WRITE "${FIND_GRAPHVIZ_VERSION_SOURCE_FILE}" "${FIND_GRAPHVIZ_VERSION_SOURCE}")
set(FIND_GRAPHVIZ_VERSION_ADD_INCLUDES
"-DINCLUDE_DIRECTORIES:STRING=${GRAPHVIZ_INCLUDE_DIR}")
try_run(RUN_RESULT COMPILE_RESULT
${CMAKE_BINARY_DIR}
${FIND_GRAPHVIZ_VERSION_SOURCE_FILE}
CMAKE_FLAGS "${FIND_GRAPHVIZ_VERSION_ADD_INCLUDES}"
RUN_OUTPUT_VARIABLE GRAPHVIZ_VERSION)
if(COMPILE_RESULT AND RUN_RESULT EQUAL 1)
message(STATUS "Graphviz version: ${GRAPHVIZ_VERSION}")
else()
message(FATAL_ERROR "Unable to compile or run the graphviz version detection program.")
endif()
set(GRAPHVIZ_INCLUDE_DIRS ${GRAPHVIZ_INCLUDE_DIR} ${GRAPHVIZ_INCLUDE_DIR}/graphviz)
if(NOT Graphviz_FIND_QUIETLY)
message(STATUS "Graphviz include: ${GRAPHVIZ_INCLUDE_DIRS}")
message(STATUS "Graphviz libraries: ${GRAPHVIZ_CDT_LIBRARY} ${GRAPHVIZ_GVC_LIBRARY} ${GRAPHVIZ_CGRAPH_LIBRARY} ${GRAPHVIZ_PATHPLAN_LIBRARY}")
endif()
endif()
if(Graphviz_FIND_REQUIRED AND NOT GRAPHVIZ_FOUND)
message(FATAL_ERROR "Could not find GraphViz.")
endif()
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