gistfile1.txt

$ pypy translate.py -Ojit
[platform:msg] Setting platform to 'host' cc=None
[translation:info] Translating target as defined by targetpypystandalone
[platform:execute] gcc-4.0 -c -arch x86_64 -O3 -fomit-frame-pointer -mdynamic-no-pic /var/folders/vb/qfd4br7s6055nff9kwx65j3w0000gn/T/usession-master-1/gcctest.c -o /var/folders/vb/qfd4br7s6055nff9kwx65j3w0000gn/T/usession-master-1/gcctest.o
Traceback (most recent call last):
  File "app_main.py", line 53, in run_toplevel
    f(*fargs, **fkwds)
  File "translate.py", line 324, in <module>
    main()
  File "translate.py", line 210, in main
    targetspec_dic, translateconfig, config, args = parse_options_and_load_target()
  File "translate.py", line 178, in parse_options_and_load_target
    targetspec_dic['handle_config'](config, translateconfig)
  File "targetpypystandalone.py", line 123, in handle_config
    from pypy.objspace.std import multimethod
  File "/Volumes/data/src/pypy/pypy/objspace/std/__init__.py", line 1, in <module>
    from pypy.objspace.std.objspace import StdObjSpace
  File "/Volumes/data/src/pypy/pypy/objspace/std/objspace.py", line 7, in <module>
    from pypy.objspace.std import (builtinshortcut, stdtypedef, frame, model,
  File "/Volumes/data/src/pypy/pypy/objspace/std/builtinshortcut.py", line 3, in <module>
    from pypy.objspace.descroperation import DescrOperation
  File "/Volumes/data/src/pypy/pypy/objspace/descroperation.py", line 8, in <module>
    from pypy.module.__builtin__.interp_classobj import W_InstanceObject
  File "/Volumes/data/src/pypy/pypy/module/__builtin__/__init__.py", line 4, in <module>
    import pypy.module.imp.importing
  File "/Volumes/data/src/pypy/pypy/module/imp/importing.py", line 14, in <module>
    from pypy.rlib import streamio, jit
  File "/Volumes/data/src/pypy/pypy/rlib/streamio.py", line 43, in <module>
    from pypy.rlib import rposix
  File "/Volumes/data/src/pypy/pypy/rlib/rposix.py", line 2, in <module>
    from pypy.rpython.lltypesystem.rffi import CConstant, CExternVariable, INT
  File "/Volumes/data/src/pypy/pypy/rpython/lltypesystem/rffi.py", line 459, in <module>
    NUMBER_TYPES = setup()
  File "/Volumes/data/src/pypy/pypy/rpython/lltypesystem/rffi.py", line 448, in setup
    names = populate_inttypes()
  File "/Volumes/data/src/pypy/pypy/rpython/lltypesystem/rffi.py", line 442, in populate_inttypes
    platform.populate_inttypes(populatelist)
  File "/Volumes/data/src/pypy/pypy/rpython/tool/rfficache.py", line 82, in populate_inttypes
    sizes = sizeof_c_types(names_c, **kwds)
  File "/Volumes/data/src/pypy/pypy/rpython/tool/rfficache.py", line 44, in sizeof_c_types
    answer = ask_gcc(question, **kwds)
  File "/Volumes/data/src/pypy/pypy/rpython/tool/rfficache.py", line 34, in ask_gcc
    return build_executable_cache([c_file], eci)
  File "/Volumes/data/src/pypy/pypy/tool/gcc_cache.py", line 27, in build_executable_cache
    result = platform.execute(platform.compile(c_files, eci))
  File "/Volumes/data/src/pypy/pypy/translator/platform/__init__.py", line 51, in compile
    ofiles = self._compile_o_files(cfiles, eci, standalone)
  File "/Volumes/data/src/pypy/pypy/translator/platform/__init__.py", line 60, in _compile_o_files
    ofiles.append(self._compile_c_file(self.cc, cfile, compile_args))
  File "/Volumes/data/src/pypy/pypy/translator/platform/posix.py", line 38, in _compile_c_file
    cwd=str(cfile.dirpath()))
  File "/Volumes/data/src/pypy/pypy/translator/platform/__init__.py", line 117, in _execute_c_compiler
    cwd)
  File "/Volumes/data/src/pypy/pypy/tool/runsubprocess.py", line 11, in run_subprocess
    return _run(executable, args, env, cwd)
  File "/Volumes/data/src/pypy/pypy/tool/runsubprocess.py", line 78, in _run
    raise OSError('%s: %s\nargs=%r' % (args[0], results[1], args))
OSError: gcc-4.0: [Errno 2] No such file or directory
args=('gcc-4.0', ['-c', '-arch', 'x86_64', '-O3', '-fomit-frame-pointer', '-mdynamic-no-pic', '/var/folders/vb/qfd4br7s6055nff9kwx65j3w0000gn/T/usession-master-1/gcctest.c', '-o', '/var/folders/vb/qfd4br7s6055nff9kwx65j3w0000gn/T/usession-master-1/gcctest.o'], None, '/var/folders/vb/qfd4br7s6055nff9kwx65j3w0000gn/T/usession-master-1')

issuing CC='gcc-4.2' pypy translate.py -Ojit on OS X Lion fixes this.