> Apple’s naming is definitely confusing in this area!
>
> In current SDKs, TARGET_OS_MAC means code is being generated for a Mac OS X
> variant,
> which covers OSX, IOS, Watch … ; to determine which kind of device, you have
> to check the
> specific define for that device - OSX corresponds to macOS, i.e. laptops,
> desktops.
>
> In older SDKs (specifically Xcode 3, for macOS Leopard (darwin 9) as
> mentioned by Iain)
> TARGET_OS_MAC means code is being generated for "Mac OS", i.e. laptops,
> desktops as
> above; TARGET_OS_OSX is undefined (as are TARGET_OS_IOS etc).
>
> If we are compiling for macOS, using a current macOS SDK, then TARGET_OS_MAC
> is
> set to 1 and TARGET_OS_OSX is set to 1.
>
> If we were compiling for iOS, using a current iOS SDK as supplied with
> current Xcode, then
> TARGET_OS_MAC would be set to 1, TARGET_OS_OSX would be set to 0, and
> TARGET_OS_IOS would be set to 1.
OK so then the following is sufficient for our needs:
#elif defined (__APPLE__)
/* By default, macOS volumes are case-insensitive, iOS
volumes are case-sensitive. */
#if TARGET_OS_IOS
file_names_case_sensitive_cache = 1;
#else
file_names_case_sensitive_cache = 0;
#endif
#else /* Neither Windows nor Apple. */
file_names_case_sensitive_cache = 1;
#endif
We want the default to be 0, and we only care about setting it to 1 on iOS for
recent
SDKs, the case of an old SDK and iOS isn't interesting at this stage, so it's
fine if we set
the var to 0 in this scenario.
Arno
