json-schema-validator/CMakeLists.txt
2020-09-03 10:41:35 +02:00

213 lines
7.0 KiB
CMake

# Add Hunter support (Disabled by default)
option(HUNTER_ENABLED "Enable Hunter package manager support" OFF)
if(HUNTER_ENABLED)
include("cmake/HunterGate.cmake")
HunterGate(
URL "https://github.com/cpp-pm/hunter/archive/v0.23.262.tar.gz"
SHA1 "eb51e633e08cdbe2153caf255e9c23968fecb29d"
)
endif()
project(nlohmann_json_schema_validator
LANGUAGES CXX)
set(PROJECT_VERSION 2.1.1)
cmake_minimum_required(VERSION 3.2)
option(BUILD_TESTS "Build tests" ON)
option(BUILD_EXAMPLES "Build examples" ON)
# Add nlohmann_json::nlohmann_json using Hunter package manager
if(HUNTER_ENABLED)
hunter_add_package(nlohmann_json)
endif()
# the library
add_library(nlohmann_json_schema_validator
src/json-schema-draft7.json.cpp
src/json-uri.cpp
src/json-validator.cpp
src/json-patch.cpp
src/string-format-check.cpp)
target_include_directories(nlohmann_json_schema_validator
PUBLIC
$<INSTALL_INTERFACE:include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>)
target_compile_features(nlohmann_json_schema_validator
PUBLIC
cxx_range_for) # for C++11 - flags
set_target_properties(nlohmann_json_schema_validator
PROPERTIES
VERSION ${PROJECT_VERSION}
SOVERSION 1)
# if used as a sub-directory, do not create install-rules -
# because of the dependency to nlohmann_json.
set(JSON_VALIDATOR_INSTALL ON)
# here we decice how nlohmann::json is found and used to build this project
# first, check whether a nlohmann_json::nlohmann_json target exists already
# -> we are used as a sub-directory from within another project
if(TARGET nlohmann_json::nlohmann_json)
message(STATUS "Found nlohmann_json::nlohmann_json-target - linking with it")
target_link_libraries(
nlohmann_json_schema_validator
PUBLIC nlohmann_json::nlohmann_json)
set(JSON_VALIDATOR_INSTALL OFF)
set(BUILD_TESTS OFF)
set(BUILD_EXAMPLES OFF)
elseif(TARGET nlohmann_json) # or nlohmann_json, we are used a sub-project next to nlohmann-json's git repo
message(STATUS "Found nlohmann_json-target - linking with it")
target_link_libraries(
nlohmann_json_schema_validator
PUBLIC nlohmann_json)
set(JSON_VALIDATOR_INSTALL OFF)
set(BUILD_TESTS OFF)
set(BUILD_EXAMPLES OFF)
else()
if (NOT IS_ABSOLUTE ${nlohmann_json_DIR}) # make nlohmann_json_DIR absolute
get_filename_component(nlohmann_json_DIR
"${CMAKE_CURRENT_BINARY_DIR}/${nlohmann_json_DIR}"
REALPATH)
endif()
set(nlohmann_json_orignal_DIR ${nlohmann_json_DIR}) # save path for later use
# find nlohmann_json-cmake-package
find_package(nlohmann_json QUIET)
if(TARGET nlohmann_json::nlohmann_json)
message(STATUS "Found nlohmann_json-cmake-package - linking with it")
target_link_libraries(
nlohmann_json_schema_validator
PUBLIC nlohmann_json::nlohmann_json)
else()
# find nlohmann/json.hpp
message(STATUS ${nlohmann_json_orignal_DIR})
find_path(JSON_HPP nlohmann/json.hpp
PATHS ${nlohmann_json_orignal_DIR})
if(EXISTS ${JSON_HPP}/nlohmann/json.hpp)
message(STATUS "Found nlohmann/json.hpp in given path: ${JSON_HPP}")
target_include_directories(
nlohmann_json_schema_validator
PUBLIC $<BUILD_INTERFACE:${JSON_HPP}>)
else()
message(FATAL_ERROR "could not find nlohmann/json.hpp or any related cmake-target. Please set nlohmann_json_DIR.")
endif()
# nlohmann_json_DIR has to be reset (for later use in tests)
set(nlohmann_json_DIR ${JSON_HPP})
endif()
endif()
if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR
"${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
target_compile_options(nlohmann_json_schema_validator
PRIVATE
-Wall -Wextra -Wshadow)
endif()
if(BUILD_SHARED_LIBS)
target_compile_definitions(nlohmann_json_schema_validator
PRIVATE
-DJSON_SCHEMA_VALIDATOR_EXPORTS)
endif()
# regex with boost if gcc < 4.9 - default is std::regex
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.9.0")
find_package(Boost COMPONENTS regex)
if(NOT Boost_FOUND)
message(STATUS "GCC less then 4.9 and boost-regex NOT found - no regex used")
target_compile_definitions(nlohmann_json_schema_validator PRIVATE -DJSON_SCHEMA_NO_REGEX)
else()
message(STATUS "GCC less then 4.9 and boost-regex FOUND - using boost::regex")
target_compile_definitions(nlohmann_json_schema_validator PRIVATE -DJSON_SCHEMA_BOOST_REGEX)
target_include_directories(nlohmann_json_schema_validator PRIVATE ${Boost_INCLUDE_DIRS})
target_link_libraries(nlohmann_json_schema_validator PRIVATE ${Boost_LIBRARIES})
endif()
endif()
endif()
if(JSON_VALIDATOR_INSTALL)
install(TARGETS nlohmann_json_schema_validator
EXPORT ${PROJECT_NAME}Targets
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib
RUNTIME DESTINATION bin)
install(FILES src/nlohmann/json-schema.hpp
DESTINATION include/nlohmann)
endif()
if (BUILD_EXAMPLES)
# simple nlohmann_json_schema_validator-executable
add_executable(json-schema-validate app/json-schema-validate.cpp)
target_link_libraries(json-schema-validate nlohmann_json_schema_validator)
add_executable(readme-json-schema app/readme.cpp)
target_link_libraries(readme-json-schema nlohmann_json_schema_validator)
add_executable(format-json-schema app/format.cpp)
target_link_libraries(format-json-schema nlohmann_json_schema_validator)
install(TARGETS json-schema-validate readme-json-schema
DESTINATION bin)
endif()
if (BUILD_TESTS)
# test-zone
enable_testing()
add_subdirectory(test)
endif()
if(JSON_VALIDATOR_INSTALL)
# Set Up the Project Targets and Config Files for CMake
# Set the install path to the cmake config files (Relative, so install works correctly under Hunter as well)
set(INSTALL_CMAKE_DIR "lib/cmake/${PROJECT_NAME}")
set(INSTALL_CMAKEDIR_ROOT share/cmake)
# Install Targets
install(EXPORT ${PROJECT_NAME}Targets
FILE ${PROJECT_NAME}Targets.cmake
DESTINATION "${INSTALL_CMAKE_DIR}")
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
VERSION ${PROJECT_VERSION}
COMPATIBILITY SameMajorVersion
)
configure_package_config_file(
${PROJECT_SOURCE_DIR}/${PROJECT_NAME}Config.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
INSTALL_DESTINATION ${INSTALL_CMAKEDIR_ROOT}/${PROJECT_NAME}
)
install(
FILES
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
DESTINATION
${INSTALL_CMAKE_DIR}
)
endif()