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1.2 KiB
1.2 KiB
JSON_SKIP_LIBRARY_VERSION_CHECK
#define JSON_SKIP_LIBRARY_VERSION_CHECK
When defined, the library will not create a compiler warning when a different version of the library was already included.
Default definition
By default, the macro is not defined.
#undef JSON_SKIP_LIBRARY_VERSION_CHECK
Notes
!!! danger "ABI compatibility"
Mixing different library versions in the same code can be a problem as the different versions may not be ABI
compatible.
Examples
??? example "Example: switch off the version check"
The code below switches off the warning about including a different version of the library.
```cpp
#define JSON_SKIP_LIBRARY_VERSION_CHECK 1
#include <nlohmann/json.hpp>
...
```
??? example "Example: warning about a different library version"
The following warning will be shown in case a different version of the library was already included:
```
Already included a different version of the library!
```
See also
- NLOHMANN_JSON_VERSION_MAJOR, NLOHMANN_JSON_VERSION_MINOR, NLOHMANN_JSON_VERSION_PATCH - library version information
Version history
- Added in version 3.11.0.