Up to now I've been building my x64 binaries on Sequioa specifying a target macOS level of 13.4. That worked fine.
In an attempt to debug a problem that was causing some pain I created a 13.4 x64 build environment and tried to build the code there.
This code:
using CacheKeyType = std::filesystem::path;
using CacheValueType = std::tuple<LoadedImage, int, bool>; // <image, lastUse, currentlyLoading>
using CacheType = std::unordered_map<CacheKeyType, CacheValueType>;
friend class ThreadLoader;
static inline constexpr int16_t MAXIMAGESINCACHE = 20;
static inline constinit std::atomic_int age{ 0 };
static inline std::shared_mutex rwMutex{};
static inline CacheType imageCache{};
got me the following errors:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/__hash_table:838:5: error: static_assert failed due to requirement 'integral_constant<bool, false>::value' "the specified hash does not meet the Hash requirements"
static_assert(__check_hash_requirements<_Key, _Hash>::value,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/__hash_table:853:1: note: in instantiation of template class 'std::__enforce_unordered_container_requirements<std::filesystem::path, std::hash<std::filesystem::path>, std::equal_to<std::filesystem::path>>' requested here
typename __enforce_unordered_container_requirements<_Key, _Hash, _Equal>::type
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/unordered_map:1152:30: note: while substituting explicitly-specified template arguments into function template '__diagnose_unordered_container_requirements'
static_assert(sizeof(__diagnose_unordered_container_requirements<_Key, _Hash, _Pred>(0)), "");
^
/Users/amonra/.vs/DSS/build/DeepSkyStackerKernel/DeepSkyStackerKernel_autogen/EWIEGA46WW/../../../../DeepSkyStackerKernel/imageloader.h:60:26: note: in instantiation of member function 'std::unordered_map<std::filesystem::path, std::tuple<LoadedImage, int, bool>>::~unordered_map' requested here
static inline CacheType imageCache{};
^
2 errors generated.
Which isn't "mega-helpful" :( I thought that specifying:
set(CMAKE_OSX_DEPLOYMENT_TARGET 13.4 CACHE STRING "Minimum operating system version for deployment" FORCE)
would have made the compilations use the same headers as for Ventura above, but it seems not?
Is this to be expected?