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# Copyright (c) 2018 Ribose Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#.rst:
# FindJSON-C
# -----------
#
# Find the json-c library.
#
# IMPORTED Targets
# ^^^^^^^^^^^^^^^^
#
# This module defines :prop_tgt:`IMPORTED` targets:
#
# ``JSON-C::JSON-C``
# The json-c library, if found.
#
# Result variables
# ^^^^^^^^^^^^^^^^
#
# This module defines the following variables:
#
# ::
#
# JSON-C_FOUND - true if the headers and library were found
# JSON-C_INCLUDE_DIRS - where to find headers
# JSON-C_LIBRARIES - list of libraries to link
# JSON-C_VERSION - library version that was found, if any
# use pkg-config to get the directories and then use these values
# in the find_path() and find_library() calls
find_package(PkgConfig QUIET)
pkg_check_modules(PC_JSON-C QUIET json-c)
# RHEL-based systems may have json-c12
if (NOT PC_JSON-C_FOUND)
pkg_check_modules(PC_JSON-C QUIET json-c12)
endif()
# find the headers
find_path(JSON-C_INCLUDE_DIR
NAMES json_c_version.h
HINTS
${PC_JSON-C_INCLUDEDIR}
${PC_JSON-C_INCLUDE_DIRS}
PATH_SUFFIXES json-c
)
# find the library
find_library(JSON-C_LIBRARY
NAMES json-c libjson-c json-c12 libjson-c12
HINTS
${PC_JSON-C_LIBDIR}
${PC_JSON-C_LIBRARY_DIRS}
)
# determine the version
if(PC_JSON-C_VERSION)
set(JSON-C_VERSION ${PC_JSON-C_VERSION})
elseif(JSON-C_INCLUDE_DIR AND EXISTS "${JSON-C_INCLUDE_DIR}/json_c_version.h")
file(STRINGS "${JSON-C_INCLUDE_DIR}/json_c_version.h" _json-c_version_h
REGEX "^#define[\t ]+JSON_C_VERSION[\t ]+\"[^\"]*\"$")
string(REGEX REPLACE ".*#define[\t ]+JSON_C_VERSION[\t ]+\"([^\"]*)\".*"
"\\1" _json-c_version_str "${_json-c_version_h}")
set(JSON-C_VERSION "${_json-c_version_str}"
CACHE INTERNAL "The version of json-c which was detected")
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(JSON-C
REQUIRED_VARS JSON-C_LIBRARY JSON-C_INCLUDE_DIR JSON-C_VERSION
VERSION_VAR JSON-C_VERSION
)
if (JSON-C_FOUND)
set(JSON-C_INCLUDE_DIRS ${JSON-C_INCLUDE_DIR} ${PC_JSON-C_INCLUDE_DIRS})
set(JSON-C_LIBRARIES ${JSON-C_LIBRARY})
endif()
if (JSON-C_FOUND AND NOT TARGET JSON-C::JSON-C)
# create the new library target
add_library(JSON-C::JSON-C UNKNOWN IMPORTED)
# set the required include dirs for the target
if (JSON-C_INCLUDE_DIRS)
set_target_properties(JSON-C::JSON-C
PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${JSON-C_INCLUDE_DIRS}"
)
endif()
# set the required libraries for the target
if (EXISTS "${JSON-C_LIBRARY}")
set_target_properties(JSON-C::JSON-C
PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${JSON-C_LIBRARY}"
)
endif()
endif()
mark_as_advanced(JSON-C_INCLUDE_DIR JSON-C_LIBRARY)
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