Fix mac build of libc_emcc_wrapper.c (#3836)

Author: bnason-nf

core/iwasm/libraries/libc-emcc/libc_emcc_wrapper.c

@@ -168,12 +168,21 @@ statbuf_native2app(const struct stat *statbuf_native,
     statbuf_app->st_blksize = (unsigned)statbuf_native->st_blksize;
     statbuf_app->st_blocks = (unsigned)statbuf_native->st_blocks;
     statbuf_app->st_ino = (int64)statbuf_native->st_ino;
+#if defined(__APPLE__)
+    statbuf_app->st_atim.tv_sec = (int)statbuf_native->st_atimespec.tv_sec;
+    statbuf_app->st_atim.tv_nsec = (int)statbuf_native->st_atimespec.tv_nsec;
+    statbuf_app->st_mtim.tv_sec = (int)statbuf_native->st_mtimespec.tv_sec;
+    statbuf_app->st_mtim.tv_nsec = (int)statbuf_native->st_mtimespec.tv_nsec;
+    statbuf_app->st_ctim.tv_sec = (int)statbuf_native->st_ctimespec.tv_sec;
+    statbuf_app->st_ctim.tv_nsec = (int)statbuf_native->st_ctimespec.tv_nsec;
+#else
     statbuf_app->st_atim.tv_sec = (int)statbuf_native->st_atim.tv_sec;
     statbuf_app->st_atim.tv_nsec = (int)statbuf_native->st_atim.tv_nsec;
     statbuf_app->st_mtim.tv_sec = (int)statbuf_native->st_mtim.tv_sec;
     statbuf_app->st_mtim.tv_nsec = (int)statbuf_native->st_mtim.tv_nsec;
     statbuf_app->st_ctim.tv_sec = (int)statbuf_native->st_ctim.tv_sec;
     statbuf_app->st_ctim.tv_nsec = (int)statbuf_native->st_ctim.tv_nsec;
+#endif
 }
 
 static int
@@ -261,7 +270,8 @@ getentropy_wrapper(wasm_exec_env_t exec_env, void *buffer, uint32 length)
 {
     if (buffer == NULL)
         return -1;
-#if defined(_DEFAULT_SOURCE) || defined(BH_PLATFORM_LINUX_SGX)
+#if defined(_DEFAULT_SOURCE) || defined(BH_PLATFORM_LINUX_SGX) \
+    || defined(__APPLE__)
     return getentropy(buffer, length);
 #else
     return syscall(SYS_getrandom, buffer, length, 0);