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# -*- mode: cmake; -*-
# - Try to find libjson include dirs and libraries
# Usage of this module as follows:
# This file defines:
# * JSON_FOUND if protoc was found
# * JSON_LIBRARY The lib to link to (currently only a static unix lib, not
# portable)
# * JSON_INCLUDE The include directories for libjson.
message(STATUS "FindJson check")
IF (NOT WIN32)
include(FindPkgConfig)
if ( PKG_CONFIG_FOUND )
pkg_check_modules (PC_JSON json-c>=0.12)
set(JSON_DEFINITIONS ${PC_JSON_CFLAGS_OTHER})
endif(PKG_CONFIG_FOUND)
endif (NOT WIN32)
#
# set defaults
SET(_json_HOME "/usr/local")
SET(_json_INCLUDE_SEARCH_DIRS
${CMAKE_INCLUDE_PATH}
/usr/local/include
/usr/include
)
SET(_json_LIBRARIES_SEARCH_DIRS
${CMAKE_LIBRARY_PATH}
/usr/local/lib
/usr/lib
)
##
if( "${JSON_HOME}" STREQUAL "")
if("" MATCHES "$ENV{JSON_HOME}")
message(STATUS "JSON_HOME env is not set, setting it to /usr/local")
set (JSON_HOME ${_json_HOME})
else("" MATCHES "$ENV{JSON_HOME}")
set (JSON_HOME "$ENV{JSON_HOME}")
endif("" MATCHES "$ENV{JSON_HOME}")
else( "${JSON_HOME}" STREQUAL "")
message(STATUS "JSON_HOME is not empty: \"${JSON_HOME}\"")
endif( "${JSON_HOME}" STREQUAL "")
##
message(STATUS "Looking for json in ${JSON_HOME}")
IF( NOT ${JSON_HOME} STREQUAL "" )
SET(_json_INCLUDE_SEARCH_DIRS ${JSON_HOME}/include ${_json_INCLUDE_SEARCH_DIRS})
SET(_json_LIBRARIES_SEARCH_DIRS ${JSON_HOME}/lib ${_json_LIBRARIES_SEARCH_DIRS})
SET(_json_HOME ${JSON_HOME})
ENDIF( NOT ${JSON_HOME} STREQUAL "" )
IF( NOT $ENV{JSON_INCLUDEDIR} STREQUAL "" )
SET(_json_INCLUDE_SEARCH_DIRS $ENV{JSON_INCLUDEDIR} ${_json_INCLUDE_SEARCH_DIRS})
ENDIF( NOT $ENV{JSON_INCLUDEDIR} STREQUAL "" )
IF( NOT $ENV{JSON_LIBRARYDIR} STREQUAL "" )
SET(_json_LIBRARIES_SEARCH_DIRS $ENV{JSON_LIBRARYDIR} ${_json_LIBRARIES_SEARCH_DIRS})
ENDIF( NOT $ENV{JSON_LIBRARYDIR} STREQUAL "" )
IF( JSON_HOME )
SET(_json_INCLUDE_SEARCH_DIRS ${JSON_HOME}/include ${_json_INCLUDE_SEARCH_DIRS})
SET(_json_LIBRARIES_SEARCH_DIRS ${JSON_HOME}/lib ${_json_LIBRARIES_SEARCH_DIRS})
SET(_json_HOME ${JSON_HOME})
ENDIF( JSON_HOME )
message("Json-c search: '${_json_INCLUDE_SEARCH_DIRS}' ${CMAKE_INCLUDE_PATH}")
# find the include files
FIND_PATH(JSON-C_INCLUDE_DIR json-c/json.h
HINTS
${_json_INCLUDE_SEARCH_DIRS}
${PC_JSON_INCLUDEDIR}
${PC_JSON_INCLUDE_DIRS}
${CMAKE_INCLUDE_PATH}
)
# locate the library
IF(WIN32)
SET(JSON_LIBRARY_NAMES ${JSON_LIBRARY_NAMES} libjson.lib)
ELSE(WIN32)
SET(JSON_LIBRARY_NAMES ${JSON_LIBRARY_NAMES} libjson-c.so)
SET(JSON_LIBRARY_NAMES ${JSON_LIBRARY_NAMES} libjson-c.a)
ENDIF(WIN32)
FIND_LIBRARY(JSON_LIBRARY NAMES ${JSON_LIBRARY_NAMES}
HINTS
${_json_LIBRARIES_SEARCH_DIRS}
${PC_JSON_LIBDIR}
${PC_JSON_LIBRARY_DIRS}
)
# if the include and the program are found then we have it
IF(JSON-C_INCLUDE_DIR AND JSON_LIBRARY)
SET(JSON_FOUND "YES")
message("Json-c found: '${JSON-C_INCLUDE_DIR}'")
SET(JSON_INCLUDE_DIR ${JSON-C_INCLUDE_DIR})
ENDIF(JSON-C_INCLUDE_DIR AND JSON_LIBRARY)
if( NOT WIN32)
list(APPEND JSON_LIBRARY "-lrt")
endif( NOT WIN32)
MARK_AS_ADVANCED(
JSON_FOUND
JSON_LIBRARY
JSON_INCLUDE_DIR
)
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