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# - Try to find the Exiv2 library
#
# EXIV2_MIN_VERSION - You can set this variable to the minimum version you need
# before doing FIND_PACKAGE(Exiv2). The default is 0.12.
#
# Once done this will define
#
# EXIV2_FOUND - system has libexiv2
# EXIV2_INCLUDE_DIR - the libexiv2 include directory
# EXIV2_LIBRARIES - Link these to use libexiv2
# EXIV2_DEFINITIONS - Compiler switches required for using libexiv2
#
if (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES)
# in cache already
set(EXIV2_FOUND TRUE)
else (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES)
if (NOT WIN32)
# use pkg-config to get the directories and then use these values
# in the FIND_PATH() and FIND_LIBRARY() calls
include(UsePkgConfig)
if(NOT EXIV2_MIN_VERSION)
set(EXIV2_MIN_VERSION "0.12")
endif(NOT EXIV2_MIN_VERSION)
pkgconfig(exiv2 _EXIV2IncDir _EXIV2LinkDir _EXIV2LinkFlags _EXIV2Cflags)
if(_EXIV2LinkFlags)
# query pkg-config asking for a Exiv2 >= 0.12
exec_program(${PKGCONFIG_EXECUTABLE} ARGS --atleast-version=${EXIV2_MIN_VERSION} exiv2 RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
if(_return_VALUE STREQUAL "0")
message(STATUS "Found Exiv2 release >= ${EXIV2_MIN_VERSION}")
set(EXIV2_VERSION_GOOD_FOUND TRUE)
else(_return_VALUE STREQUAL "0")
message(STATUS "Found Exiv2 release < ${EXIV2_MIN_VERSION}")
endif(_return_VALUE STREQUAL "0")
else(_EXIV2LinkFlags)
set(EXIV2_FOUND FALSE)
set(EXIV2_VERSION_GOOD_FOUND FALSE)
message(STATUS "Cannot find Exiv2 library!")
endif(_EXIV2LinkFlags)
else(NOT WIN32)
#Better check
set(EXIV2_VERSION_GOOD_FOUND TRUE)
endif (NOT WIN32)
if(EXIV2_VERSION_GOOD_FOUND)
set(EXIV2_DEFINITIONS ${_EXIV2Cflags})
find_path(EXIV2_INCLUDE_DIR exiv2/exif.hpp
${_EXIV2IncDir}
)
find_library(EXIV2_LIBRARIES NAMES exiv2 libexiv2
PATHS
${_EXIV2LinkDir}
)
if (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES)
set(EXIV2_FOUND TRUE)
# TODO version check is missing
endif (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES)
endif(EXIV2_VERSION_GOOD_FOUND)
if (EXIV2_FOUND)
if (NOT Exiv2_FIND_QUIETLY)
message(STATUS "Found Exiv2: ${EXIV2_LIBRARIES}")
endif (NOT Exiv2_FIND_QUIETLY)
else (EXIV2_FOUND)
if (Exiv2_FIND_REQUIRED)
if (NOT EXIV2_INCLUDE_DIR)
message(FATAL_ERROR "Could NOT find Exiv2 header files")
endif (NOT EXIV2_INCLUDE_DIR)
if (NOT EXIV2_LIBRARIES)
message(FATAL_ERROR "Could NOT find Exiv2 library")
endif (NOT EXIV2_LIBRARIES)
endif (Exiv2_FIND_REQUIRED)
endif (EXIV2_FOUND)
mark_as_advanced(EXIV2_INCLUDE_DIR EXIV2_LIBRARIES)
endif (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES)
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