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📝 document JSON_NO_IO macro #2842

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Niels Lohmann 2021-07-10 12:51:18 +02:00
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doc/mkdocs/docs/features/macros.md
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@ -32,6 +32,10 @@ When defining `JSON_NOEXCEPTION`, `#!cpp try` is replaced by `#!cpp if (true)`,
The same effect is achieved by setting the compiler flag `-fno-exceptions`.
## `JSON_NO_IO`
When defined, headers `<cstdio>`, `<ios>`, `<iosfwd>`, `<istream>`, and `<ostream>` are not included and parse functions relying on these headers are excluded. This is relevant for environment where these I/O functions are disallowed for security reasons (e.g., Intel Software Guard Extensions (SGX)).
## `JSON_SKIP_UNSUPPORTED_COMPILER_CHECK`
When defined, the library will not create a compile error when a known unsupported compiler is detected. This allows to use the library with compilers that do not fully support C++11 and may only work if unsupported features are not used.