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147 lines
4.1 KiB
CMake
147 lines
4.1 KiB
CMake
#[=======================================================================[.rst
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Findjansson
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----------
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FindModule for jansson and associated libraries
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.. versionchanged:: 3.0
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Updated FindModule to CMake standards
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Imported Targets
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^^^^^^^^^^^^^^^^
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.. versionadded:: 2.0
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This module defines the :prop_tgt:`IMPORTED` target ``jansson::jansson``.
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Result Variables
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^^^^^^^^^^^^^^^^
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This module sets the following variables:
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``jansson_FOUND``
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True, if all required components and the core library were found.
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``jansson_VERSION``
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Detected version of found jansson libraries.
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Cache variables
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^^^^^^^^^^^^^^^
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The following cache variables may also be set:
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``jansson_LIBRARY``
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Path to the library component of jansson.
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``jansson_INCLUDE_DIR``
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Directory containing ``jansson.h``.
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#]=======================================================================]
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include(FindPackageHandleStandardArgs)
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find_package(PkgConfig QUIET)
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if(PKG_CONFIG_FOUND)
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pkg_search_module(PC_jansson QUIET jansson)
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endif()
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# jansson_set_soname: Set SONAME on imported library targets
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macro(jansson_set_soname)
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if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin")
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execute_process(
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COMMAND sh -c "otool -D '${jansson_LIBRARY}' | grep -v '${jansson_LIBRARY}'"
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OUTPUT_VARIABLE _output
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RESULT_VARIABLE _result
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)
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if(_result EQUAL 0 AND _output MATCHES "^@rpath/")
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set_property(TARGET jansson::jansson PROPERTY IMPORTED_SONAME "${_output}")
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endif()
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elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
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execute_process(
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COMMAND sh -c "objdump -p '${jansson_LIBRARY}' | grep SONAME"
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OUTPUT_VARIABLE _output
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RESULT_VARIABLE _result
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)
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if(_result EQUAL 0)
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string(REGEX REPLACE "[ \t]+SONAME[ \t]+([^ \t]+)" "\\1" _soname "${_output}")
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set_property(TARGET jansson::jansson PROPERTY IMPORTED_SONAME "${_soname}")
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unset(_soname)
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endif()
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endif()
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unset(_output)
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unset(_result)
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endmacro()
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find_path(
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jansson_INCLUDE_DIR
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NAMES jansson.h
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HINTS ${PC_jansson_INCLUDE_DIR}
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PATHS /usr/include /usr/local/include
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PATH_SUFFIXES jansson-2.1
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DOC "jansson include directory"
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)
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if(PC_jansson_VERSION VERSION_GREATER 0)
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set(jansson_VERSION ${PC_jansson_VERSION})
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elseif(EXISTS "${jansson_INCLUDE_DIR}/jansson.h")
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file(STRINGS "${jansson_INCLUDE_DIR}/jansson.h" _VERSION_STRING REGEX "#define[ \t]+JANSSON_VERSION[ \t]+.+")
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string(REGEX REPLACE ".*#define[ \t]+JANSSON_VERSION[ \t]+\"(.+)\".*" "\\1" jansson_VERSION "${_VERSION_STRING}")
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else()
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if(NOT jansson_FIND_QUIETLY)
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message(AUTHOR_WARNING "Failed to find jansson version.")
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endif()
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set(jansson_VERSION 0.0.0)
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endif()
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find_library(
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jansson_LIBRARY
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NAMES jansson
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HINTS ${PC_jansson_LIBRARY_DIRS}
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PATHS /usr/lib /usr/local/lib
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DOC "jansson location"
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)
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if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin|Windows")
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set(jansson_ERROR_REASON "Ensure that obs-deps is provided as part of CMAKE_PREFIX_PATH.")
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elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
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set(jansson_ERROR_REASON "Ensure that jansson is installed on the system.")
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endif()
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find_package_handle_standard_args(
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jansson
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REQUIRED_VARS jansson_LIBRARY jansson_INCLUDE_DIR
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VERSION_VAR jansson_VERSION
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REASON_FAILURE_MESSAGE "${jansson_ERROR_REASON}"
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)
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mark_as_advanced(jansson_INCLUDE_DIR jansson_LIBRARY)
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unset(jansson_ERROR_REASON)
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if(jansson_FOUND)
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if(NOT TARGET jansson::jansson)
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if(IS_ABSOLUTE "${jansson_LIBRARY}")
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add_library(jansson::jansson UNKNOWN IMPORTED)
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set_property(TARGET jansson::jansson PROPERTY IMPORTED_LOCATION "${jansson_LIBRARY}")
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else()
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add_library(jansson::jansson INTERFACE IMPORTED)
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set_property(TARGET jansson::jansson PROPERTY IMPORTED_LIBNAME "${jansson_LIBRARY}")
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endif()
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jansson_set_soname()
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set_target_properties(
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jansson::jansson
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PROPERTIES
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INTERFACE_COMPILE_OPTIONS "${PC_jansson_CFLAGS_OTHER}"
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INTERFACE_INCLUDE_DIRECTORIES "${jansson_INCLUDE_DIR}"
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VERSION ${jansson_VERSION}
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)
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endif()
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endif()
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include(FeatureSummary)
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set_package_properties(
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jansson
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PROPERTIES
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URL "https://www.digip.org/jansson/"
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DESCRIPTION "A C library for encoding, decoding, and manipulating JSON data."
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)
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