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# - Try to find Exiv2
# Once done this will define
#
# EXIV2_FOUND - system has Exiv2
# EXIV2_INCLUDE_DIR - the Exiv2 include directory
# EXIV2_LIBRARIES - Link these to use Exiv2
# EXIV2_DEFINITIONS - Compiler switches required for using Exiv2
#
#=============================================================================
# Copyright (c) 2019 Andres Schneider <asn@cryptomilk.org>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
#
if (UNIX)
find_package(PkgConfig)
if (PKG_CONFIG_FOUND)
pkg_check_modules(_EXIV2 exiv2)
endif (PKG_CONFIG_FOUND)
endif (UNIX)
find_path(EXIV2_INCLUDE_DIR
NAMES
exiv2/exif.hpp
PATHS
${_EXIV2_INCLUDEDIR}
)
find_library(EXIV2_LIBRARY
NAMES
exiv2
PATHS
${_EXIV2_LIBDIR}
)
if (EXIV2_LIBRARY)
set(EXIV2_LIBRARIES
${EXIV2_LIBRARIES}
${EXIV2_LIBRARY}
)
endif (EXIV2_LIBRARY)
# Get the version number from exiv2/version.hpp and store it in the cache:
if (EXIV2_INCLUDE_DIR AND NOT EXIV2_VERSION)
set(EXIV2_VERSION_STRING_FOUND FALSE)
if (EXISTS ${EXIV2_INCLUDE_DIR}/exiv2/version.hpp)
file(READ ${EXIV2_INCLUDE_DIR}/exiv2/version.hpp EXIV2_VERSION_CONTENT)
string(FIND "${EXIV2_VERSION_CONTENT}" "#define EXIV2_MAJOR_VERSION" EXIV2_MAJOR_FOUND)
if (${EXIV2_MAJOR_FOUND} GREATER 0)
set(EXIV2_VERSION_STRING_FOUND TRUE)
endif()
endif()
if (NOT EXIV2_VERSION_STRING_FOUND AND EXISTS ${EXIV2_INCLUDE_DIR}/exiv2/exv_conf.h)
file(READ ${EXIV2_INCLUDE_DIR}/exiv2/exv_conf.h EXIV2_VERSION_CONTENT)
endif()
string(REGEX MATCH "#define EXIV2_MAJOR_VERSION +\\( *([0-9]+) *\\)" _dummy "${EXIV2_VERSION_CONTENT}")
set(EXIV2_VERSION_MAJOR "${CMAKE_MATCH_1}")
string(REGEX MATCH "#define EXIV2_MINOR_VERSION +\\( *([0-9]+) *\\)" _dummy "${EXIV2_VERSION_CONTENT}")
set(EXIV2_VERSION_MINOR "${CMAKE_MATCH_1}")
string(REGEX MATCH "#define EXIV2_PATCH_VERSION +\\( *([0-9]+) *\\)" _dummy "${EXIV2_VERSION_CONTENT}")
set(EXIV2_VERSION_PATCH "${CMAKE_MATCH_1}")
set(EXIV2_VERSION "${EXIV2_VERSION_MAJOR}.${EXIV2_VERSION_MINOR}.${EXIV2_VERSION_PATCH}")
endif (EXIV2_INCLUDE_DIR AND NOT EXIV2_VERSION)
if (EXIV2_VERSION)
set(EXIV2_FOUND TRUE)
endif (EXIV2_VERSION)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Exiv2
FOUND_VAR EXIV2_FOUND
REQUIRED_VARS EXIV2_INCLUDE_DIR EXIV2_LIBRARY EXIV2_LIBRARIES
VERSION_VAR EXIV2_VERSION)
# show the EXIV2_INCLUDE_DIR and EXIV2_LIBRARIES variables only in the advanced view
mark_as_advanced(EXIV2_INCLUDE_DIR EXIV2_LIBRARY EXIV2_LIBRARIES)
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