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#
# Tries to find json-c through the config
# before trying to query for it
#
if (json-c_FOUND)
return()
endif()
#find_package(json-c CONFIG)
if (json-c_FOUND)
return()
endif()
if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "MSVC")
find_package(PkgConfig QUIET)
if (PKG_CONFIG_FOUND)
pkg_check_modules(_JSONC json-c)
endif()
endif()
if (_JSONC_FOUND) # we can rely on pkg-config
set(json-c_LINK_LIBRARIES ${_JSONC_LINK_LIBRARIES})
if (NOT BUILD_STATIC)
set(json-c_INCLUDE_DIRS ${_JSONC_INCLUDE_DIRS})
set(json-c_CFLAGS ${_JSONC_CFLAGS_OTHER})
else()
set(json-c_INCLUDE_DIRS ${_JSONC_STATIC_INCLUDE_DIRS})
set(json-c_CFLAGS ${_JSONC_STATIC_CFLAGS_OTHER})
endif()
set(json-c_FOUND 1)
else()
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(_lib_suffix 64)
else()
set(_lib_suffix 32)
endif()
find_path(JSONC_INC
NAMES json.h
HINTS
ENV jsoncPath${_lib_suffix}
ENV jsoncPath
${_JSONC_INCLUDE_DIRS}
)
find_library(JSONC_LIB
NAMES ${_JSONC_LIBRARIES} jsonc json-c
HINTS
ENV jsoncPath${_lib_suffix}
ENV jsoncPath
${_JSONC_LIBRARY_DIRS}
${_JSONC_STATIC_LIBRARY_DIRS}
)
include(FindPackageHandleStandardArgs)
#find_package_handle_standard_args(json-c DEFAULT_MSG JSONC_LIB JSONC_INC)
mark_as_advanced(JSONC_INC JSONC_LIB)
if(json-c_FOUND)
set(json-c_INCLUDE_DIRS ${JSONC_INC})
set(json-c_LINK_LIBRARIES ${JSONC_LIB})
if (BUILD_STATIC)
set(json-c_LINK_LIBRARIES ${json-c_LINK_LIBRARIES} ${_JSONC_STATIC_LIBRARIES})
endif()
endif()
endif()
if (json-c_FOUND)
# Reconstruct the official interface
add_library(json-c::json-c UNKNOWN IMPORTED)
set_target_properties(json-c::json-c PROPERTIES
IMPORTED_LOCATION "${json-c_LINK_LIBRARIES}"
)
target_compile_definitions(json-c::json-c INTERFACE ${json-c_CFLAGS})
target_include_directories(json-c::json-c INTERFACE ${json-c_INCLUDE_DIRS})
else()
include(FetchContent)
cmake_policy(SET CMP0077 NEW)
message(STATUS "Downloading json-c...")
FetchContent_Declare(
jsonc
GIT_REPOSITORY https://github.com/json-c/json-c
GIT_TAG json-c-0.17
GIT_SHALLOW TRUE
)
set(BUILD_SHARED_LIBS OFF CACHE INTERNAL "")
set(BUILD_STATIC_LIBS ON CACHE INTERNAL "")
FetchContent_MakeAvailable(jsonc)
# Only the config file includes the namespace
add_library(json-c::json-c ALIAS json-c)
set(json-c_FOUND 1)
endif()
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