c331706644
Github issue: https://github.com/nlohmann/json/issues/2073 nlohmann::json documents 2 way of depending on it using CMake 1) Copy-paste the project/source into your own project. 2) Install nlohman::json and then use find_package. (1) pollutes your git repository, (2) requires everyone to install the dependencies themselves. Since 2018, CMake provide some kind of 'package manager' features using [FetchContent](https://cmake.org/cmake/help/v3.17/module/FetchContent.html) It gives the following: ~~~cmake include(FetchContent) FetchContent_Declare(json GIT_REPOSITORY https://github.com/nlohmann/json GIT_TAG v3.7.3) FetchContent_GetProperties(json) if(NOT json_POPULATED) FetchContent_Populate(json) add_subdirectory( ${json_SOURCE_DIR} ${json_BINARY_DIR} EXCLUDE_FROM_ALL) endif() ~~~ Then declares the dependency in the target using it: ~~~cmake target_link_library(my_project PRIVATE nlohmann_json::nlohmann_json ~~~ This patch updates the documentation and provides tests.
18 lines
596 B
CMake
18 lines
596 B
CMake
if (${CMAKE_VERSION} VERSION_GREATER "3.11.0")
|
|
add_test(NAME cmake_fetch_content_configure
|
|
COMMAND ${CMAKE_COMMAND}
|
|
-G "${CMAKE_GENERATOR}"
|
|
-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
|
|
-Dnlohmann_json_source=${PROJECT_SOURCE_DIR}
|
|
${CMAKE_CURRENT_SOURCE_DIR}/project
|
|
)
|
|
add_test(NAME cmake_fetch_content_build
|
|
COMMAND ${CMAKE_COMMAND} --build .
|
|
)
|
|
set_tests_properties(cmake_fetch_content_configure PROPERTIES
|
|
FIXTURES_SETUP cmake_fetch_content
|
|
)
|
|
set_tests_properties(cmake_fetch_content_build PROPERTIES
|
|
FIXTURES_REQUIRED cmake_fetch_content
|
|
)
|
|
endif()
|