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1set(JSON_TEST_DATA_URL     https://github.com/nlohmann/json_test_data)
2set(JSON_TEST_DATA_VERSION 3.0.0)
3
4# if variable is set, use test data from given directory rather than downloading them
5if(JSON_TestDataDirectory)
6    message(STATUS "Using test data in ${JSON_TestDataDirectory}.")
7    add_custom_target(download_test_data)
8    file(WRITE ${CMAKE_BINARY_DIR}/include/test_data.hpp "#define TEST_DATA_DIRECTORY \"${JSON_TestDataDirectory}\"\n")
9else()
10    find_package(Git)
11    # target to download test data
12    add_custom_target(download_test_data
13        COMMAND test -d json_test_data || ${GIT_EXECUTABLE} clone -c advice.detachedHead=false --branch v${JSON_TEST_DATA_VERSION} ${JSON_TEST_DATA_URL}.git --quiet --depth 1
14        COMMENT "Downloading test data from ${JSON_TEST_DATA_URL} (v${JSON_TEST_DATA_VERSION})"
15        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
16    )
17    # create a header with the path to the downloaded test data
18    file(WRITE ${CMAKE_BINARY_DIR}/include/test_data.hpp "#define TEST_DATA_DIRECTORY \"${CMAKE_BINARY_DIR}/json_test_data\"\n")
19endif()
20
21# determine the operating system (for debug and support purposes)
22find_program(UNAME_COMMAND uname)
23find_program(VER_COMMAND ver)
24find_program(LSB_RELEASE_COMMAND lsb_release)
25find_program(SW_VERS_COMMAND sw_vers)
26set(OS_VERSION_STRINGS "${CMAKE_SYSTEM}")
27if (VER_COMMAND)
28    execute_process(COMMAND ${VER_COMMAND} OUTPUT_VARIABLE VER_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE)
29    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${VER_COMMAND_RESULT}")
30endif()
31if (SW_VERS_COMMAND)
32    execute_process(COMMAND ${SW_VERS_COMMAND} OUTPUT_VARIABLE SW_VERS_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
33    string(REGEX REPLACE "[ ]*\n" "; " SW_VERS_COMMAND_RESULT "${SW_VERS_COMMAND_RESULT}")
34    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${SW_VERS_COMMAND_RESULT}")
35endif()
36if (LSB_RELEASE_COMMAND)
37    execute_process(COMMAND ${LSB_RELEASE_COMMAND} -a OUTPUT_VARIABLE LSB_RELEASE_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
38    string(REGEX REPLACE "[ ]*\n" "; " LSB_RELEASE_COMMAND_RESULT "${LSB_RELEASE_COMMAND_RESULT}")
39    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${LSB_RELEASE_COMMAND_RESULT}")
40endif()
41if (UNAME_COMMAND)
42    execute_process(COMMAND ${UNAME_COMMAND} -a OUTPUT_VARIABLE UNAME_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
43    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${UNAME_COMMAND_RESULT}")
44endif()
45
46message(STATUS "Operating system: ${OS_VERSION_STRINGS}")
47
48# determine the compiler (for debug and support purposes)
49if (MSVC)
50    execute_process(COMMAND ${CMAKE_CXX_COMPILER} OUTPUT_VARIABLE CXX_VERSION_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_VARIABLE CXX_VERSION_RESULT ERROR_STRIP_TRAILING_WHITESPACE)
51    set(CMAKE_CXX_COMPILER "${CXX_VERSION_RESULT}; MSVC_VERSION=${MSVC_VERSION}; MSVC_TOOLSET_VERSION=${MSVC_TOOLSET_VERSION}")
52else()
53    execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version OUTPUT_VARIABLE CXX_VERSION_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE)
54endif()
55string(REGEX REPLACE "[ ]*\n" "; " CXX_VERSION_RESULT "${CXX_VERSION_RESULT}")
56message(STATUS "Compiler: ${CXX_VERSION_RESULT}")
57