Xcode 11.5とXcode 12のdiffを眺めてたら、
mach-o/loader.hにMH_FILESET, LC_FILESET_ENTRY, fileset_entry_commandってのが追加されている事に気付いた。mach-o/loader.hにMH_FILESET, LC_FILESET_ENTRY, fileset_entry_commandってのが追加されている事に気付いた。/Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/mach-o/loader.hから引用 #define MH_FILESET 0xc /* a file composed of other Mach-Os to be run in the same userspace sharing a single linkedit. */ … #define LC_FILESET_ENTRY (0x35 | LC_REQ_DYLD) /* used with fileset_entry_command */ … /* * LC_FILESET_ENTRY commands describe constituent Mach-O files that are part * of a fileset. In one implementation, entries are dylibs with individual * mach headers and repositionable text and data segments. Each entry is * further described by its own mach header. */ struct fileset_entry_command { uint32_t cmd; /* LC_FILESET_ENTRY */ uint32_t cmdsize; /* includes entry_id string */ uint64_t vmaddr; /* memory address of the entry */ uint64_t fileoff; /* file offset of the entry */ union lc_str entry_id; /* contained entry id */ uint32_t reserved; /* reserved */ }; (edited)