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1.3 KiB
JSON_HAS_FILESYSTEM / JSON_HAS_EXPERIMENTAL_FILESYSTEM
#define JSON_HAS_FILESYSTEM /* value */
#define JSON_HAS_EXPERIMENTAL_FILESYSTEM /* value */
When compiling with C++17, the library provides conversions from and to
std::filesystem::path. As compiler support for filesystem is
limited, the library tries to detect whether
<filesystem>/std::filesystem (JSON_HAS_FILESYSTEM) or
<experimental/filesystem>/std::experimental::filesystem
(JSON_HAS_EXPERIMENTAL_FILESYSTEM) should be used. To override the built-in check, define JSON_HAS_FILESYSTEM or
JSON_HAS_EXPERIMENTAL_FILESYSTEM to 1.
Default definition
The default value is detected based on the preprocessor macros #!cpp __cpp_lib_filesystem,
#!cpp __cpp_lib_experimental_filesystem, #!cpp __has_include(<filesystem>), or
#!cpp __has_include(<experimental/filesystem>).
Notes
- Note that older compilers or older versions of libstd++ also require the library
stdc++fsto be linked to for filesystem support. - Both macros are undefined outside the library.
Version history
- Added in version 3.10.5.