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do not fetch nlohmann_json if it already added in main project (#287)

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andrejlevkovitch 2023-09-22 16:12:57 +02:00 committed by GitHub
parent 79535fe0b6
commit 0be4d4c4b5
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1 changed files with 22 additions and 20 deletions
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42
CMakeLists.txt
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@ -80,26 +80,28 @@ endif ()
]==============================================================================================]
set(fetch_packages "")
# Fetch/Find nlohmann_json
# TODO: Remove when bumping cmake >= 3.24
if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.24)
FetchContent_Declare(nlohmann_json
GIT_REPOSITORY https://github.com/nlohmann/json
GIT_TAG ${JSON_FETCH_VERSION}
FIND_PACKAGE_ARGS
)
list(APPEND fetch_packages nlohmann_json)
else ()
# Try to get system installed version
find_package(nlohmann_json QUIET)
if (NOT nlohmann_json_FOUND)
# If failed fetch the desired version
FetchContent_Declare(nlohmann_json
GIT_REPOSITORY https://github.com/nlohmann/json
GIT_TAG ${JSON_FETCH_VERSION}
)
list(APPEND fetch_packages nlohmann_json)
endif ()
if (NOT TARGET nlohmann_json)
# Fetch/Find nlohmann_json
# TODO: Remove when bumping cmake >= 3.24
if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.24)
FetchContent_Declare(nlohmann_json
GIT_REPOSITORY https://github.com/nlohmann/json
GIT_TAG ${JSON_FETCH_VERSION}
FIND_PACKAGE_ARGS
)
list(APPEND fetch_packages nlohmann_json)
else ()
# Try to get system installed version
find_package(nlohmann_json QUIET)
if (NOT nlohmann_json_FOUND)
# If failed fetch the desired version
FetchContent_Declare(nlohmann_json
GIT_REPOSITORY https://github.com/nlohmann/json
GIT_TAG ${JSON_FETCH_VERSION}
)
list(APPEND fetch_packages nlohmann_json)
endif ()
endif ()
endif ()
# Handle configure flags