This is a fork of spdlog v1.8.5 compatible with OpenEnclave.

The only modifications to the repo are:

• In /include/spdlog/details/os-inl.h:86 we replace any calls to localtime (not supported by OpenEnclave) with gmtime. This means that all reported times are in UTC.
• We modify the in_terminal(FILE *file) function defined in /include/spdlog/details/os.h to always return false to avoid calling the unsupported isatty function.

Additionally the following compiler flags need to be set:

• SPDLOG_NO_THREAD_ID
• FMT_USE_INT128=0

This ensures that only supported syscalls/library functions are used.