FPL does not compile on GCC i386/i486 targets

[KungPhoo]

final_platform_layer.zip

I had to guard all fplAtomic...64 functions on x86 Linux i686. Example:

#if defined(FPL_CPU_64BIT)
fpl_platform_api int64_t fplAtomicExchangeS64(volatile int64_t *target, const int64_t value);
#endif

I think it's a GCC issue. I add you the current develop-version with my changes. I hope you can implement them. (I don't know how to do a pull request, sorry).

[f1nalspace]

Do not guard the 64-bit atomics!

Add one of the following options to your GCC linker:

• "-march=i586/i686"
• "-latomic"

One of them should fix the issue. Both are not required, i would recommend using "-latomic", that forces GCC to implement the 64-bit versions on X86 platforms as well.

Of course the correct way is to use the __atomic_ in the future, but this requires at least C11 - but right now FPL is C99 based. But i may end up bumping the library up to C17 later anyway, because C17 is nothing more than a fixed version of C11 and C11 is based on C99. And if we are realistic, in 2026 C17 is fully supported in all major compilers - even in crap MSVC.

[KungPhoo]

Unfortunately my CPU has a 486 (Celeron M ULV353 from 2007 - okay, quite old - but I didn't want o dump it.)