This directory hierarchy is sorted roughly, but not completely, alphabetically:

osprey1.0
- arith
- be
  - be
    - ia64
  - com
    - ia64
  - prompf_anl
  - region
  - whirl2c
  - whirl2f
- clibinc
  - cray
- common
  - com
    - ia64
  - targ_info
    - abi
      - ia64
    - access
    - generate
    - isa
      - ia64
    - proc
      - ia64
  - util
    - ia32
      - IA32_host
    - ia64
- crayf90
  - fe90
  - sgi
- include
  - cmplrs
  - sys
    - ia64
- ir_tools
- libcif
- libcsup
  - gen
  - include
  - math
  - msgnew
- libf
  - fio
    - c1
  - include
- libF77
  - mips
    - quad
- libfi
  - array
  - char
  - element
  - include
- libu
  - errmsg
- linux
  - include
    - sys
  - mfef90_includes
    - cmplrs
    - sys
- targ_sparc_solaris
  - crayf90
    - sgi