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5928070239
* updated copyright notices everywhere (I hope) * Update makeself.lsm * Update coverity-scan.sh * make all newlines be linux, not windows * remove copyright from all files (the take it from the repo), unless it is printed to users
118 lines
4.8 KiB
CMake
118 lines
4.8 KiB
CMake
# SPDX-License-Identifier: GPL-3.0-or-later
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# Functions and macros for handling of JSON-C
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# Handle bundling of json-c.
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#
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# This pulls it in as a sub-project using FetchContent functionality.
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#
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# This needs to be a function and not a macro for variable scoping
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# reasons. All the things we care about from the sub-project are exposed
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# as targets, which are globally scoped and not function scoped.
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function(netdata_bundle_jsonc)
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include(FetchContent)
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include(NetdataFetchContentExtra)
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message(STATUS "Preparing vendored copy of JSON-C")
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if(ENABLE_BUNDLED_JSONC)
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set(FETCHCONTENT_TRY_FIND_PACKAGE_MODE NEVER)
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endif()
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set(FETCHCONTENT_FULLY_DISCONNECTED Off)
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# JSON-C supports older versions of CMake than we do, so set
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# the correct values for the few policies we actually need.
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set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
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# JSON-C's build system does string comparisons against option
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# values instead of treating them as booleans, so we need to use
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# proper strings for option values instead of just setting them
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# to true or false.
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set(DISABLE_BSYMBOLIC ON)
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set(DISABLE_WERROR ON)
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set(DISABLE_EXTRA_LIBS ON)
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set(BUILD_SHARED_LIBS OFF)
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set(BUILD_STATIC_LIBS ON)
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set(BUILD_APPS OFF)
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set(repo https://github.com/json-c/json-c)
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set(tag b4c371fa0cbc4dcbaccc359ce9e957a22988fb34) # json-c-0.17-20230812
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if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.28)
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FetchContent_Declare(json-c
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GIT_REPOSITORY ${repo}
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GIT_TAG ${tag}
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CMAKE_ARGS ${NETDATA_CMAKE_PROPAGATE_TOOLCHAIN_ARGS}
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EXCLUDE_FROM_ALL
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)
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else()
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FetchContent_Declare(json-c
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GIT_REPOSITORY ${repo}
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GIT_TAG ${tag}
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CMAKE_ARGS ${NETDATA_CMAKE_PROPAGATE_TOOLCHAIN_ARGS}
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)
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endif()
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FetchContent_MakeAvailable_NoInstall(json-c)
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message(STATUS "Finished preparing vendored copy of JSON-C")
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endfunction()
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# Handle setup of json-c for the build.
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#
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# This will attempt to find json-c using pkg_check_modules. If it finds
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# a usable copy, that will be used. If not, it will bundle a vendored copy
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# as a sub-project.
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#
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# Irrespective of how json-c is to be included, library names,
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# include directories, and compile definitions will be specified in the
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# NETDATA_JSONC_* variables for later use.
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macro(netdata_detect_jsonc)
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if(NOT ENABLE_BUNDLED_JSONC)
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pkg_check_modules(JSONC json-c>=0.14)
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endif()
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if(NOT JSONC_FOUND)
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set(ENABLE_BUNDLED_JSONC True)
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netdata_bundle_jsonc()
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set(NETDATA_JSONC_LDFLAGS json-c)
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set(NETDATA_JSONC_INCLUDE_DIRS ${PROJECT_BINARY_DIR}/include)
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get_target_property(NETDATA_JSONC_CFLAGS_OTHER json-c INTERFACE_COMPILE_DEFINITIONS)
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if(NETDATA_JSONC_CFLAGS_OTHER STREQUAL NETDATA_JSONC_CFLAGS_OTHER-NOTFOUND)
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set(NETDATA_JSONC_CFLAGS_OTHER "")
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endif()
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add_custom_command(
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OUTPUT ${PROJECT_BINARY_DIR}/include/json-c
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COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BINARY_DIR}/include
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COMMAND ${CMAKE_COMMAND} -E create_symlink ${json-c_BINARY_DIR} ${PROJECT_BINARY_DIR}/include/json-c
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COMMENT "Create compatibility symlink for vendored JSON-C headers"
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DEPENDS json-c
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)
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add_custom_target(
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json-c-compat-link
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DEPENDS ${PROJECT_BINARY_DIR}/include/json-c
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)
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else()
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set(NETDATA_JSONC_LDFLAGS ${JSONC_LDFLAGS})
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set(NETDATA_JSONC_CFLAGS_OTHER ${JSONC_CFLAGS_OTHER})
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set(NETDATA_JSONC_INCLUDE_DIRS ${JSONC_INCLUDE_DIRS})
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add_custom_target(json-c-compat-link)
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endif()
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endmacro()
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# Add json-c as a public link dependency of the specified target.
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#
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# The specified target must already exist, and the netdata_detect_json-c
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# macro must have already been run at least once for this to work correctly.
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function(netdata_add_jsonc_to_target _target)
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if(ENABLE_BUNDLED_JSONC)
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target_include_directories(${_target} BEFORE PUBLIC ${NETDATA_JSONC_INCLUDE_DIRS})
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else()
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target_include_directories(${_target} PUBLIC ${NETDATA_JSONC_INCLUDE_DIRS})
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endif()
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target_compile_options(${_target} PUBLIC ${NETDATA_JSONC_CFLAGS_OTHER})
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target_link_libraries(${_target} PUBLIC ${NETDATA_JSONC_LDFLAGS})
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add_dependencies(${_target} json-c-compat-link)
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endfunction()
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