gistfile1.txt

$ /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -o why -iosmac_version_min 12.0 why.o
ld: warning: Auto-Linking library not found for -lswiftCore
ld: warning: Auto-Linking library not found for -lswiftSwiftOnoneSupport
$ /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/otool -l why
why:
Mach header
      magic cputype cpusubtype  caps    filetype ncmds sizeofcmds      flags
 0xfeedfacf 16777223          3  0x00           2    14        920 0x00000085
Load command 0
      cmd LC_SEGMENT_64
  cmdsize 72
  segname __PAGEZERO
   vmaddr 0x0000000000000000
   vmsize 0x0000000000001000
  fileoff 0
 filesize 0
  maxprot 0x00000000
 initprot 0x00000000
   nsects 0
    flags 0x0
Load command 1
      cmd LC_SEGMENT_64
  cmdsize 312
  segname __TEXT
   vmaddr 0x0000000000001000
   vmsize 0x0000000000001000
  fileoff 0
 filesize 4096
  maxprot 0x00000005
 initprot 0x00000005
   nsects 3
    flags 0x0
Section
  sectname __text
   segname __TEXT
      addr 0x0000000000001fd0
      size 0x000000000000000f
    offset 4048
     align 2^4 (16)
    reloff 0
    nreloc 0
     flags 0x80000400
 reserved1 0
 reserved2 0
Section
  sectname __const
   segname __TEXT
      addr 0x0000000000001fe0
      size 0x0000000000000002
    offset 4064
     align 2^1 (2)
    reloff 0
    nreloc 0
     flags 0x00000000
 reserved1 0
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Section
  sectname __eh_frame
   segname __TEXT
      addr 0x0000000000001fe8
      size 0x0000000000000018
    offset 4072
     align 2^3 (8)
    reloff 0
    nreloc 0
     flags 0x00000000
 reserved1 0
 reserved2 0
Load command 2
      cmd LC_SEGMENT_64
  cmdsize 152
  segname __DATA
   vmaddr 0x0000000000002000
   vmsize 0x0000000000001000
  fileoff 4096
 filesize 4096
  maxprot 0x00000003
 initprot 0x00000003
   nsects 1
    flags 0x0
Section
  sectname __objc_imageinfo
   segname __DATA
      addr 0x0000000000002000
      size 0x0000000000000008
    offset 4096
     align 2^2 (4)
    reloff 0
    nreloc 0
     flags 0x00000000
 reserved1 0
 reserved2 0
Load command 3
      cmd LC_SEGMENT_64
  cmdsize 72
  segname __LINKEDIT
   vmaddr 0x0000000000003000
   vmsize 0x0000000000001000
  fileoff 8192
 filesize 160
  maxprot 0x00000001
 initprot 0x00000001
   nsects 0
    flags 0x0
Load command 4
            cmd LC_DYLD_INFO_ONLY
        cmdsize 48
     rebase_off 0
    rebase_size 0
       bind_off 0
      bind_size 0
  weak_bind_off 0
 weak_bind_size 0
  lazy_bind_off 0
 lazy_bind_size 0
     export_off 8192
    export_size 48
Load command 5
     cmd LC_SYMTAB
 cmdsize 24
  symoff 8248
   nsyms 3
  stroff 8296
 strsize 56
Load command 6
            cmd LC_DYSYMTAB
        cmdsize 80
      ilocalsym 0
      nlocalsym 1
     iextdefsym 1
     nextdefsym 2
      iundefsym 3
      nundefsym 0
         tocoff 0
           ntoc 0
      modtaboff 0
        nmodtab 0
   extrefsymoff 0
    nextrefsyms 0
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  nindirectsyms 0
      extreloff 0
        nextrel 0
      locreloff 0
        nlocrel 0
Load command 7
          cmd LC_LOAD_DYLINKER
      cmdsize 32
         name /usr/lib/dyld (offset 12)
Load command 8
     cmd LC_UUID
 cmdsize 24
    uuid 40368E78-DE25-342F-85F8-186A1460530A
Load command 9
       cmd LC_BUILD_VERSION
   cmdsize 32
  platform iosmac
       sdk n/a
     minos 12.0
    ntools 1
      tool ld
   version 408.1.1
Load command 10
      cmd LC_SOURCE_VERSION
  cmdsize 16
  version 0.0
Load command 11
       cmd LC_MAIN
   cmdsize 24
  entryoff 4048
 stacksize 0
Load command 12
      cmd LC_FUNCTION_STARTS
  cmdsize 16
  dataoff 8240
 datasize 8
Load command 13
      cmd LC_DATA_IN_CODE
  cmdsize 16
  dataoff 8248
 datasize 0
$