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FindOpenCV.cmake
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FindOpenCV.cmake
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###########################################################
# Find OpenCV Library
# See http://sourceforge.net/projects/opencvlibrary/
#----------------------------------------------------------
#
## 1: Setup:
# The following variables are optionally searched for defaults
# OpenCV_DIR: Base directory of OpenCv tree to use.
#
## 2: Variable
# The following are set after configuration is done:
#
# OpenCV_FOUND
# OpenCV_LIBS
# OpenCV_INCLUDE_DIR
# OpenCV_VERSION (OpenCV_VERSION_MAJOR, OpenCV_VERSION_MINOR, OpenCV_VERSION_PATCH)
#
#
# Deprecated variable are used to maintain backward compatibility with
# the script of Jan Woetzel (2006/09): www.mip.informatik.uni-kiel.de/~jw
# OpenCV_INCLUDE_DIRS
# OpenCV_LIBRARIES
# OpenCV_LINK_DIRECTORIES
#
## 3: Version
#
# 2010/04/07 Benoit Rat, Correct a bug when OpenCVConfig.cmake is not found.
# 2010/03/24 Benoit Rat, Add compatibility for when OpenCVConfig.cmake is not found.
# 2010/03/22 Benoit Rat, Creation of the script.
#
#
# tested with:
# - OpenCV 2.1: MinGW, MSVC2008
# - OpenCV 2.0: MinGW, MSVC2008, GCC4
#
#
## 4: Licence:
#
# LGPL 2.1 : GNU Lesser General Public License Usage
# Alternatively, this file may be used under the terms of the GNU Lesser
# General Public License version 2.1 as published by the Free Software
# Foundation and appearing in the file LICENSE.LGPL included in the
# packaging of this file. Please review the following information to
# ensure the GNU Lesser General Public License version 2.1 requirements
# will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
#
#----------------------------------------------------------
find_path(OpenCV_DIR "OpenCVConfig.cmake" DOC "Root directory of OpenCV")
set(OpenCV_configScript "${OpenCV_DIR}/OpenCVConfig.cmake")
if (NOT EXISTS "${OpenCV_DIR}")
if (NOT WIN32)
include(FindPkgConfig)
if (PKG_CONFIG_FOUND)
pkg_check_modules(OPENCV_PKGCONF opencv)
set(OpenCV_DIR ${OPENCV_PKGCONF_PREFIX})
if (EXISTS "${OpenCV_DIR}")
set(OpenCV_configScript_DIR "${OpenCV_DIR}/share/opencv")
if (EXISTS "${OpenCV_configScript_DIR}")
set(OpenCV_configScript "${OpenCV_configScript_DIR}/OpenCVConfig.cmake")
endif (EXISTS "${OpenCV_configScript_DIR}")
endif (EXISTS "${OpenCV_DIR}")
endif (PKG_CONFIG_FOUND)
endif (NOT WIN32)
endif (NOT EXISTS "${OpenCV_DIR}")
##====================================================
## Find OpenCV libraries
##----------------------------------------------------
if (EXISTS "${OpenCV_DIR}")
#When its possible to use the Config script use it.
if (EXISTS "${OpenCV_configScript}")
## Include the standard CMake script
include("${OpenCV_configScript}")
## Search for a specific version
if (WIN32 OR NOT PKG_CONFIG_FOUND)
set(CVLIB_SUFFIX "${OpenCV_VERSION_MAJOR}${OpenCV_VERSION_MINOR}${OpenCV_VERSION_PATCH}")
endif (WIN32 OR NOT PKG_CONFIG_FOUND)
##Boris:TODO: check for correct OpenCV version in pkg-config case !!!
#Otherwise it try to guess it.
else (EXISTS "${OpenCV_configScript}")
find_path(OpenCV_INCLUDE_DIR "cv.h" PATHS "${OpenCV_DIR}" PATH_SUFFIXES "include" "include/opencv" DOC "")
if (EXISTS ${OpenCV_INCLUDE_DIR})
include_directories(${OpenCV_INCLUDE_DIR})
endif (EXISTS ${OpenCV_INCLUDE_DIR})
if (NOT EXISTS ${VERSION_FILE_DIR}) #may alreay be in cache
#Find OpenCV version by looking at cvver.h or core/version.hpp
find_path(VERSION_FILE_DIR "version.hpp" PATHS "${OpenCV_DIR}" PATH_SUFFIXES "include" "include/opencv" "include/opencv2" "include/opencv2/core" DOC "")
if (NOT EXISTS ${VERSION_FILE_DIR})
find_path(VERSION_FILE_DIR "cvver.h" PATHS "${OpenCV_DIR}" PATH_SUFFIXES "include" "include/opencv" DOC "")
if (NOT EXISTS ${VERSION_FILE_DIR})
message(FATAL_ERROR "OpenCV version file not found")
else (NOT EXISTS ${VERSION_FILE_DIR})
set(VERSION_FILE ${VERSION_FILE_DIR}/cvver.h)
endif (NOT EXISTS ${VERSION_FILE_DIR})
else (NOT EXISTS ${VERSION_FILE_DIR})
set(VERSION_FILE ${VERSION_FILE_DIR}/version.hpp)
endif (NOT EXISTS ${VERSION_FILE_DIR})
#file(STRINGS ${OpenCV_INCLUDE_DIR}/cvver.h OpenCV_VERSIONS_TMP REGEX "^#define CV_[A-Z]+_VERSION[ \t]+[0-9]+$")
file(STRINGS ${VERSION_FILE} OpenCV_VERSIONS_TMP REGEX "^#define CV_[A-Z]+_VERSION[ \t]+[0-9]+$")
string(REGEX REPLACE ".*#define CV_MAJOR_VERSION[ \t]+([0-9]+).*" "\\1" OpenCV_VERSION_MAJOR ${OpenCV_VERSIONS_TMP})
string(REGEX REPLACE ".*#define CV_MINOR_VERSION[ \t]+([0-9]+).*" "\\1" OpenCV_VERSION_MINOR ${OpenCV_VERSIONS_TMP})
string(REGEX REPLACE ".*#define CV_SUBMINOR_VERSION[ \t]+([0-9]+).*" "\\1" OpenCV_VERSION_PATCH ${OpenCV_VERSIONS_TMP})
set(OpenCV_VERSION ${OpenCV_VERSION_MAJOR}.${OpenCV_VERSION_MINOR}.${OpenCV_VERSION_PATCH} CACHE STRING "" FORCE)
if (WIN32 OR NOT PKG_CONFIG_FOUND)
set(CVLIB_SUFFIX "${OpenCV_VERSION_MAJOR}${OpenCV_VERSION_MINOR}${OpenCV_VERSION_PATCH}")
endif (WIN32 OR NOT PKG_CONFIG_FOUND)
##Boris:TODO: check for correct OpenCV version in pklg-config case !!!
endif (NOT EXISTS ${VERSION_FILE_DIR})
if (${OpenCV_VERSION} VERSION_GREATER 2.1.0)
set(OPENCV_LIB_COMPONENTS calib3d contrib core features2d flann gpu highgui imgproc legacy ml objdetect video)
#Add parent directory of ${OpenCV_INCLUDE_DIR} to ${OpenCV_INCLUDE_DIR} itself
#to be able to do both
#include <cv.h> and #include <opencv2/core/core.hpp>
get_filename_component(PARENT_DIR ${OpenCV_INCLUDE_DIR} PATH)
set(OpenCV_INCLUDE_DIR "${OpenCV_INCLUDE_DIR};${PARENT_DIR}")
else (${OpenCV_VERSION} VERSION_GREATER 2.1.0)
set(OPENCV_LIB_COMPONENTS cxcore cv ml highgui cvaux)
endif (${OpenCV_VERSION} VERSION_GREATER 2.1.0)
endif (EXISTS "${OpenCV_configScript}")
if (${OpenCV_VERSION} VERSION_GREATER 2.1.0)
set(CVLIB_SUFFIX ".${OpenCV_VERSION}")
## Initiate the variable before the loop
set(OpenCV_LIBS "")
set(OpenCV_FOUND_TMP true)
## Loop over each components
foreach (__CVLIB ${OPENCV_LIB_COMPONENTS})
find_library(OpenCV_${__CVLIB}_LIBRARY_DEBUG NAMES "${__CVLIB}${CVLIB_SUFFIX}d" "lib${__CVLIB}${CVLIB_SUFFIX}d" PATHS "${OpenCV_DIR}/lib" NO_DEFAULT_PATH)
find_library(OpenCV_${__CVLIB}_LIBRARY_RELEASE NAMES "${__CVLIB}${CVLIB_SUFFIX}" "lib${__CVLIB}${CVLIB_SUFFIX}" "opencv_${__CVLIB}${CVLIB_SUFFIX}" "opencv_${__CVLIB}" "${__CVLIB}" PATHS "${OpenCV_DIR}/lib" NO_DEFAULT_PATH)
#On MacOSX libraries are named: libopencv_${__CVLIB}${CVLIB_SUFFIX}.dylib
#On Linux libraries are named: libopencv_${__CVLIB}.so${CVLIB_SUFFIX}
# but with pkg-config ${OPENCV_LIB_COMPONENTS} are already prefixed with opencv_ ?
#we add: "opencv_${__CVLIB}${CVLIB_SUFFIX}" for MacOSX
#we add: "${__CVLIB}" for linux (but version is not checked !)
#Remove the cache value
set(OpenCV_${__CVLIB}_LIBRARY "" CACHE STRING "" FORCE)
#both debug/release
if (OpenCV_${__CVLIB}_LIBRARY_DEBUG AND OpenCV_${__CVLIB}_LIBRARY_RELEASE)
set(OpenCV_${__CVLIB}_LIBRARY debug ${OpenCV_${__CVLIB}_LIBRARY_DEBUG} optimized ${OpenCV_${__CVLIB}_LIBRARY_RELEASE} CACHE STRING "" FORCE)
#only debug
elseif (OpenCV_${__CVLIB}_LIBRARY_DEBUG)
set(OpenCV_${__CVLIB}_LIBRARY ${OpenCV_${__CVLIB}_LIBRARY_DEBUG} CACHE STRING "" FORCE)
#only release
elseif (OpenCV_${__CVLIB}_LIBRARY_RELEASE)
set(OpenCV_${__CVLIB}_LIBRARY ${OpenCV_${__CVLIB}_LIBRARY_RELEASE} CACHE STRING "" FORCE)
#no library found
else ()
set(OpenCV_FOUND_TMP false)
endif ()
#Add to the general list
if (OpenCV_${__CVLIB}_LIBRARY)
set(OpenCV_LIBS ${OpenCV_LIBS} ${OpenCV_${__CVLIB}_LIBRARY})
endif (OpenCV_${__CVLIB}_LIBRARY)
endforeach (__CVLIB)
set(OpenCV_FOUND ${OpenCV_FOUND_TMP} CACHE BOOL "" FORCE)
else (${OpenCV_VERSION} VERSION_GREATER 2.1.0)
## Initiate the variable before the loop
set(OpenCV_LIBS "")
set(OpenCV_FOUND_TMP true)
## Loop over each components
foreach (__CVLIB ${OPENCV_LIB_COMPONENTS})
find_library(OpenCV_${__CVLIB}_LIBRARY_DEBUG NAMES "${__CVLIB}${CVLIB_SUFFIX}d" "lib${__CVLIB}${CVLIB_SUFFIX}d" PATHS "${OpenCV_DIR}/lib" NO_DEFAULT_PATH)
find_library(OpenCV_${__CVLIB}_LIBRARY_RELEASE NAMES "${__CVLIB}${CVLIB_SUFFIX}" "lib${__CVLIB}${CVLIB_SUFFIX}" PATHS "${OpenCV_DIR}/lib" NO_DEFAULT_PATH)
#Remove the cache value
set(OpenCV_${__CVLIB}_LIBRARY "" CACHE STRING "" FORCE)
#both debug/release
if (OpenCV_${__CVLIB}_LIBRARY_DEBUG AND OpenCV_${__CVLIB}_LIBRARY_RELEASE)
set(OpenCV_${__CVLIB}_LIBRARY debug ${OpenCV_${__CVLIB}_LIBRARY_DEBUG} optimized ${OpenCV_${__CVLIB}_LIBRARY_RELEASE} CACHE STRING "" FORCE)
#only debug
elseif (OpenCV_${__CVLIB}_LIBRARY_DEBUG)
set(OpenCV_${__CVLIB}_LIBRARY ${OpenCV_${__CVLIB}_LIBRARY_DEBUG} CACHE STRING "" FORCE)
#only release
elseif (OpenCV_${__CVLIB}_LIBRARY_RELEASE)
set(OpenCV_${__CVLIB}_LIBRARY ${OpenCV_${__CVLIB}_LIBRARY_RELEASE} CACHE STRING "" FORCE)
#no library found
else ()
set(OpenCV_FOUND_TMP false)
endif ()
#Add to the general list
if (OpenCV_${__CVLIB}_LIBRARY)
set(OpenCV_LIBS ${OpenCV_LIBS} ${OpenCV_${__CVLIB}_LIBRARY})
endif (OpenCV_${__CVLIB}_LIBRARY)
endforeach (__CVLIB)
set(OpenCV_FOUND ${OpenCV_FOUND_TMP} CACHE BOOL "" FORCE)
endif (${OpenCV_VERSION} VERSION_GREATER 2.1.0)
else (EXISTS "${OpenCV_DIR}")
set(ERR_MSG "Please specify OpenCV directory using OpenCV_DIR env. variable")
endif (EXISTS "${OpenCV_DIR}")
##====================================================
##====================================================
## Print message
##----------------------------------------------------
if (NOT OpenCV_FOUND)
# make FIND_PACKAGE friendly
if (NOT OpenCV_FIND_QUIETLY)
if (OpenCV_FIND_REQUIRED)
message(FATAL_ERROR "OpenCV required but some headers or libs not found. ${ERR_MSG}")
else (OpenCV_FIND_REQUIRED)
message(STATUS "WARNING: OpenCV was not found. ${ERR_MSG}")
endif (OpenCV_FIND_REQUIRED)
endif (NOT OpenCV_FIND_QUIETLY)
endif (NOT OpenCV_FOUND)
##====================================================
##====================================================
## Backward compatibility
##----------------------------------------------------
if (OpenCV_FOUND)
option(OpenCV_BACKWARD_COMPA "Add some variable to make this script compatible with the other version of FindOpenCV.cmake" false)
if (OpenCV_BACKWARD_COMPA)
find_path(OpenCV_INCLUDE_DIRS "cv.h" PATHS "${OpenCV_DIR}" PATH_SUFFIXES "include" "include/opencv" DOC "Include directory")
find_path(OpenCV_INCLUDE_DIR "cv.h" PATHS "${OpenCV_DIR}" PATH_SUFFIXES "include" "include/opencv" DOC "Include directory")
set(OpenCV_LIBRARIES "${OpenCV_LIBS}" CACHE STRING "" FORCE)
endif (OpenCV_BACKWARD_COMPA)
endif (OpenCV_FOUND)
##====================================================