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The "x" mode for `fopen()` (open file only if it doesn't exist) used to be a glibc-exclusive extension, but was later standardized in C11, and is now also implemented as part of every other widely-used libc: * musl: https://git.musl-libc.org/cgit/musl/tree/src/stdio/__fmodeflags.c?id=0ccaf0572e9cccda2cced0f7ee659af4c1c6679a * Android Bionic / OpenBSD: https://android.googlesource.com/platform/bionic/+/731631f300090436d7f5df80d50b6275c8c60a93/libc/upstream-openbsd/lib/libc/stdio/flags.c#86 * Apple / FreeBSD: https://github.com/apple-oss-distributions/Libc/blob/63976b830a836a22649b806fe62e8614fe3e5555/stdio/FreeBSD/flags.c#L91-L92 As a result, "x" has already been working on all our automatically tested platforms that implement `SDL_IOFromFile()` via `fopen()`. So all we'd be missing for proper support is a Windows implementation using `CREATE_NEW`, and the documentation that this mode exists and is intended to work.
Simple DirectMedia Layer (SDL for short) is a cross-platform library designed to make it easy to write multi-media software, such as games and emulators.
You can find the latest release and additional information at: https://www.libsdl.org/
Installation instructions and a quick introduction is available in INSTALL.md
This library is distributed under the terms of the zlib license, available in LICENSE.txt.
Enjoy!
Sam Lantinga (slouken@libsdl.org)