Support real iOS devices with a device build of the Monero library

apps/ios/Koins/Support/ClearCache.c

@@ -0,0 +1,10 @@
+#include <libkern/OSCacheControl.h>
+#include <stddef.h>
+
+// randomx (pulled in by monero's proof-of-work code) calls the compiler-rt
+// builtin __clear_cache from its AArch64 JIT. libSystem exports it on macOS and
+// the simulator, but not on iOS devices, so provide the same implementation
+// compiler-rt uses on Darwin.
+void __clear_cache(void *start, void *end) {
+  sys_icache_invalidate(start, (size_t)((char *)end - (char *)start));
+}

apps/ios/project.yml

@@ -26,7 +26,10 @@ targets:
         CODE_SIGN_STYLE: Automatic
         CODE_SIGNING_ALLOWED: NO
         SWIFT_OBJC_BRIDGING_HEADER: Koins/Bridge/Koins-Bridging-Header.h
-        OTHER_LDFLAGS:
+        OTHER_LDFLAGS[sdk=iphoneos*]:
+          - "$(inherited)"
+          - "-lkoins_monero_device"
+        OTHER_LDFLAGS[sdk=iphonesimulator*]:
           - "$(inherited)"
           - "-lkoins_monero_merged"
         LIBRARY_SEARCH_PATHS: