Jack's last version (now I'm supposed to get it working :-)
This commit is contained in:
Guido van Rossum
parent
ebea896e20
commit
dbaf332107
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@ -0,0 +1,576 @@
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#! /usr/local/bin/python
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# Given a Python script, create a binary that runs the script.
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# The binary is 100% independent of Python libraries and binaries.
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# It will not contain any Python source code -- only "compiled" Python
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# (as initialized static variables containing marshalled code objects).
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# It even does the right thing for dynamically loaded modules!
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# The module search path of the binary is set to the current directory.
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#
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# Some problems remain:
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# - You need to have the Python source tree lying around as well as
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# the various libraries used to generate the Python binary.
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# - For scripts that use many modules it generates absurdly large
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# files (frozen.c and config.o as well as the final binary),
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# and is consequently rather slow.
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#
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# Caveats:
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# - The search for modules sometimes finds modules that are never
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# actually imported since the code importing them is never executed.
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# - If an imported module isn't found, you get a warning but the
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# process of freezing continues. The binary will fail if it
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# actually tries to import one of these modules.
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# - This often happens with the module 'mac', which module 'os' tries
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# to import (to determine whether it is running on a Macintosh).
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# You can ignore the warning about this.
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# - If the program dynamically reads or generates Python code and
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# executes it, this code may reference built-in or library modules
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# that aren't present in the frozen binary, and this will fail.
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# - Your program may be using external data files, e.g. compiled
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# forms definitions (*.fd). These aren't incorporated. By default,
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# the sys.path in the resulting binary is only '.' (but you can override
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# that with the -P option).
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#
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# Usage hints:
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# - If you have a bunch of scripts that you want to freeze, instead
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# of freezing each of them separately, you might consider writing
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# a tiny main script that looks at sys.argv[0] and then imports
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# the corresponding module. You can then make links to the
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# frozen binary named after the various scripts you support.
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# Pass the additional scripts as arguments after the main script.
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# A minimal script to do this is the following.
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# import sys, posixpath
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# exec('import ' + posixpath.basename(sys.argv[0]) + '\n')
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#
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# Mods by Jack, August 94:
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# - Removed all static configuration stuff. Now, Setup and Makefile files
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# are parsed to obtain the linking info for the libraries. You have to
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# supply the -B option, though.
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# - Added -P (set sys.path) and -I/-D/-L/-l options (passed on to cc and
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# ld).
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import os
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import sys
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import regex
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import getopt
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import regsub
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import string
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import marshal
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# Exception used when scanfile fails
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NoSuchFile = 'NoSuchFile'
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# Global options
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builddir = '' # -B dir
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quiet = 0 # -q
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verbose = 0 # -v
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noexec = 0 # -n
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nowrite = 0 # -N
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ofile = 'a.out' # -o file
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path = '\'"."\'' # -P path
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cc_options = [] # Collects cc options
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ld_options = [] # Collects ld options
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module_libraries = {} # ld options for each module
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global_libraries = [] # Libraries we always need
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include_path = '' # Include path, from Makefile
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lib_path = '' # and lib path, ditto
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compiler = 'cc' # and compiler
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# Main program -- argument parsing etc.
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def main():
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global quiet, verbose, noexec, nowrite, ofile, builddir, path
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try:
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opts, args = getopt.getopt(sys.argv[1:], 'B:nNo:P:qvI:D:L:l:')
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except getopt.error, msg:
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usage(str(msg))
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sys.exit(2)
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for o, a in opts:
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if o == '-B': builddir = a
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if o == '-n': noexec = 1
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if o == '-N': nowrite = 1
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if o == '-o': ofile = a
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if o == '-P':
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if '"' in a:
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usage('sorry, cannot have " in -P option')
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sys.exit(2)
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path = `'"' + a + '"'`
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if o == '-q': verbose = 0; quiet = 1
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if o == '-v': verbose = verbose + 1; quiet = 0
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if o in ('-I', '-D'): cc_options.append(o+a)
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if o in ('-L', '-l'): ld_options.append(o+a)
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if not builddir:
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usage('sorry, you have to pass a -B option')
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sys.exit(2)
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if len(args) < 1:
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usage('please pass at least one file argument')
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sys.exit(2)
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process(args[0], args[1:])
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# Print usage message to stderr
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def usage(*msgs):
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sys.stdout = sys.stderr
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for msg in msgs: print msg
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print 'Usage: freeze [options] scriptfile [modulefile ...]'
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print '-B dir : name of python build dir (no default)'
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print '-n : generate the files but don\'t compile and link'
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print '-N : don\'t write frozen.c (do compile unless -n given)'
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print '-o file : binary output file (default a.out)'
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print '-P path : set sys.path for program (default ".")'
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print '-q : quiet (no messages at all except errors)'
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print '-v : verbose (lots of extra messages)'
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print '-D and -I options are passed to cc, -L and -l to ld'
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# Process the script file
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def process(filename, addmodules):
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global noexec
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#
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if not quiet: print 'Computing needed modules ...'
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todo = {}
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todo['__main__'] = filename
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for name in addmodules:
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mod = os.path.basename(name)
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if mod[-3:] == '.py': mod = mod[:-3]
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todo[mod] = name
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try:
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dict = closure(todo)
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except NoSuchFile, filename:
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sys.stderr.write('Can\'t open file %s\n' % filename)
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sys.exit(1)
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#
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mods = dict.keys()
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mods.sort()
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#
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if verbose:
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print '%-15s %s' % ('Module', 'Filename')
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for mod in mods:
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print '%-15s %s' % (`mod`, dict[mod])
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#
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if not quiet: print 'Looking for dynamically linked modules ...'
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dlmodules = []
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objs = []
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libs = []
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for mod in mods:
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if dict[mod][-2:] == '.o':
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if verbose: print 'Found', mod, dict[mod]
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dlmodules.append(mod)
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objs.append(dict[mod])
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libsname = dict[mod][:-2] + '.libs'
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try:
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f = open(libsname, 'r')
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except IOError:
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f = None
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if f:
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libtext = f.read()
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f.close()
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for lib in string.split(libtext):
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if lib in libs: libs.remove(lib)
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libs.append(lib)
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#
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if not nowrite:
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if not quiet: print 'Writing frozen.c ...'
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writefrozen('frozen.c', dict)
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else:
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if not quiet: print 'NOT writing frozen.c ...'
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#
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if not quiet:
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print 'Deducing compile/link options from', builddir
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#
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# Parse the config info
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#
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parse(builddir)
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CONFIG_IN = lib_path + '/config.c.in'
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FMAIN = lib_path + '/frozenmain.c'
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CC = compiler
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#
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## if not dlmodules:
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if 0:
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config = CONFIG
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if not quiet: print 'Using existing', config, '...'
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else:
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config = 'tmpconfig.c'
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if nowrite:
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if not quiet: print 'NOT writing config.c ...'
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else:
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if not quiet:
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print 'Writing config.c with dl modules ...'
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f = open(CONFIG_IN, 'r')
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g = open(config, 'w')
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m1 = regex.compile('-- ADDMODULE MARKER 1 --')
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m2 = regex.compile('-- ADDMODULE MARKER 2 --')
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builtinmodules = []
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stdmodules = ('sys', '__main__', '__builtin__',
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'marshal')
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for mod in dict.keys():
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if dict[mod] == '<builtin>' and \
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mod not in stdmodules:
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builtinmodules.append(mod)
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todomodules = builtinmodules + dlmodules
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while 1:
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line = f.readline()
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if not line: break
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g.write(line)
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if m1.search(line) >= 0:
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if verbose: print 'Marker 1 ...'
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for mod in todomodules:
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g.write('extern void init' + \
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mod + '();\n')
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if m2.search(line) >= 0:
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if verbose: print 'Marker 2 ...'
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for mod in todomodules:
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g.write('{"' + mod + \
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'", init' + mod + '},\n')
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g.close()
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#
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if not quiet:
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if noexec: print 'Generating compilation commands ...'
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else: print 'Starting compilation ...'
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defs = ['-DNO_MAIN', '-DUSE_FROZEN']
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defs.append('-DPYTHONPATH='+path)
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#
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incs = ['-I.', '-I' + include_path]
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# if dict.has_key('stdwin'):
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# incs.append('-I' + j(STDWIN, 'H'))
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#
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srcs = [config, FMAIN]
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#
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modlibs = module_libraries
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for mod in dict.keys():
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if modlibs.has_key(mod):
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libs = libs + modlibs[mod]
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libs = libs + global_libraries
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#
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# remove dups:
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# XXXX Not well tested...
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nskip = 0
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newlibs = []
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while libs:
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l = libs[0]
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del libs[0]
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if l[:2] == '-L' and l in newlibs:
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nskip = nskip + 1
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continue
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if (l[:2] == '-l' or l[-2:] == '.a') and l in libs:
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nskip = nskip + 1
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continue
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newlibs.append(l)
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libs = newlibs
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if nskip and not quiet:
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print 'Removed %d duplicate libraries'%nskip
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#
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sts = 0
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#
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cmd = CC + ' -c'
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if cc_options:
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cmd = cmd + ' ' + string.join(cc_options)
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cmd = cmd + ' ' + string.join(defs)
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cmd = cmd + ' ' + string.join(incs)
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cmd = cmd + ' ' + string.join(srcs)
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print cmd
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#
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if not noexec:
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sts = os.system(cmd)
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if sts:
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print 'Exit status', sts, '-- turning on -n'
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noexec = 1
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#
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for s in srcs:
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s = os.path.basename(s)
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if s[-2:] == '.c': s = s[:-2]
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o = s + '.o'
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objs.insert(0, o)
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#
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cmd = CC
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cmd = cmd + ' ' + string.join(objs)
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cmd = cmd + ' ' + string.join(libs)
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if ld_options:
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cmd = cmd + ' ' + string.join(ld_options)
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cmd = cmd + ' -o ' + ofile
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print cmd
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#
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if not noexec:
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sts = os.system(cmd)
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if sts:
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print 'Exit status', sts
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else:
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print 'Done.'
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#
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if not quiet and not noexec and sts == 0:
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print 'Note: consider this:'; print '\tstrip', ofile
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#
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sys.exit(sts)
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# Generate code for a given module
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def makecode(filename):
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if filename[-2:] == '.o':
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return None
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try:
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f = open(filename, 'r')
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except IOError:
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return None
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if verbose: print 'Making code from', filename, '...'
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text = f.read()
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code = compile(text, filename, 'exec')
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f.close()
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return marshal.dumps(code)
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# Write the C source file containing the frozen Python code
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def writefrozen(filename, dict):
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f = open(filename, 'w')
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codelist = []
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for mod in dict.keys():
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codestring = makecode(dict[mod])
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if codestring is not None:
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codelist.append((mod, codestring))
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write = sys.stdout.write
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save_stdout = sys.stdout
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try:
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sys.stdout = f
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for mod, codestring in codelist:
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if verbose:
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write('Writing initializer for %s\n'%mod)
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print 'static unsigned char M_' + mod + '[' + \
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str(len(codestring)) + '+1] = {'
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for i in range(0, len(codestring), 16):
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for c in codestring[i:i+16]:
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print str(ord(c)) + ',',
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print
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print '};'
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print 'struct frozen {'
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print ' char *name;'
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print ' unsigned char *code;'
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print ' int size;'
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print '} frozen_modules[] = {'
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for mod, codestring in codelist:
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print ' {"' + mod + '",',
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print 'M_' + mod + ',',
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print str(len(codestring)) + '},'
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print ' {0, 0, 0} /* sentinel */'
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print '};'
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finally:
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sys.stdout = save_stdout
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f.close()
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# Determine the names and filenames of the modules imported by the
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# script, recursively. This is done by scanning for lines containing
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# import statements. (The scanning has only superficial knowledge of
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# Python syntax and no knowledge of semantics, so in theory the result
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# may be incorrect -- however this is quite unlikely if you don't
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# intentionally obscure your Python code.)
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# Compute the closure of scanfile() -- special first file because of script
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def closure(todo):
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done = {}
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while todo:
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newtodo = {}
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for modname in todo.keys():
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if not done.has_key(modname):
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filename = todo[modname]
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if filename is None:
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filename = findmodule(modname)
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done[modname] = filename
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if filename in ('<builtin>', '<unknown>'):
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continue
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modules = scanfile(filename)
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for m in modules:
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if not done.has_key(m):
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newtodo[m] = None
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todo = newtodo
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return done
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# Scan a file looking for import statements
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importstr = '\(^\|:\)[ \t]*import[ \t]+\([a-zA-Z0-9_, \t]+\)'
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fromstr = '\(^\|:\)[ \t]*from[ \t]+\([a-zA-Z0-9_]+\)[ \t]+import[ \t]+'
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isimport = regex.compile(importstr)
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isfrom = regex.compile(fromstr)
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def scanfile(filename):
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allmodules = {}
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try:
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f = open(filename, 'r')
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except IOError, msg:
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raise NoSuchFile, filename
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while 1:
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line = f.readline()
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if not line: break # EOF
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while line[-2:] == '\\\n': # Continuation line
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line = line[:-2] + ' '
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line = line + f.readline()
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if isimport.search(line) >= 0:
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rawmodules = isimport.group(2)
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modules = string.splitfields(rawmodules, ',')
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for i in range(len(modules)):
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modules[i] = string.strip(modules[i])
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elif isfrom.search(line) >= 0:
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modules = [isfrom.group(2)]
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else:
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continue
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for mod in modules:
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allmodules[mod] = None
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f.close()
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return allmodules.keys()
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# Find the file containing a module, given its name; None if not found
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builtins = sys.builtin_module_names + ['sys']
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def findmodule(modname):
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if modname in builtins: return '<builtin>'
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for dirname in sys.path:
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dlfullname = os.path.join(dirname, modname + 'module.o')
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try:
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f = open(dlfullname, 'r')
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except IOError:
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f = None
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if f:
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f.close()
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return dlfullname
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fullname = os.path.join(dirname, modname + '.py')
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try:
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f = open(fullname, 'r')
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except IOError:
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continue
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f.close()
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return fullname
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if not quiet:
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sys.stderr.write('Warning: module %s not found\n' % modname)
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return '<unknown>'
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#
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# Parse a setup file. Returns two dictionaries, one containing variables
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# defined with their values and one containing module definitions
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#
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def parse_setup(fp):
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modules = {}
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variables = {}
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for line in fp.readlines():
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if '#' in line: # Strip comments
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||||
line = string.splitfields(line, '#')[0]
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line = string.strip(line[:-1]) # Strip whitespace
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if not line:
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continue
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words = string.split(line)
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||||
if '=' in words[0]:
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#
|
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# equal sign before first space. Definition
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||||
#
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pos = string.index(line, '=')
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name = line[:pos]
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value = string.strip(line[pos+1:])
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variables[name] = value
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else:
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modules[words[0]] = words[1:]
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return modules, variables
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#
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# Parse a makefile. Returns a list of the variables defined.
|
||||
#
|
||||
def parse_makefile(fp):
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||||
variables = {}
|
||||
for line in fp.readlines():
|
||||
if '#' in line: # Strip comments
|
||||
line = string.splitfields(line, '#')[0]
|
||||
if not line:
|
||||
continue
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||||
if line[0] in string.whitespace:
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||||
continue
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||||
line = string.strip(line[:-1]) # Strip whitespace
|
||||
if not line:
|
||||
continue
|
||||
if '=' in string.splitfields(line, ':')[0]:
|
||||
#
|
||||
# equal sign before first colon. Definition
|
||||
#
|
||||
pos = string.index(line, '=')
|
||||
name = line[:pos]
|
||||
value = string.strip(line[pos+1:])
|
||||
variables[name] = value
|
||||
return variables
|
||||
|
||||
#
|
||||
# Recursively add loader options from Setup files in extension
|
||||
# directories.
|
||||
#
|
||||
def add_extension_directory(name, isinstalldir):
|
||||
if verbose:
|
||||
print 'Adding extension directory', name
|
||||
fp = open(name + '/Setup', 'r')
|
||||
modules, variables = parse_setup(fp)
|
||||
#
|
||||
# Locate all new modules and remember the ld flags needed for them
|
||||
#
|
||||
for m in modules.keys():
|
||||
if module_libraries.has_key(m):
|
||||
continue
|
||||
options = modules[m]
|
||||
if isinstalldir:
|
||||
ld_options = []
|
||||
else:
|
||||
ld_options = [name + '/lib.a']
|
||||
for o in options:
|
||||
# ld options are all capital except DUIC and l
|
||||
if o[:-2] == '.a':
|
||||
ld_options.append(o)
|
||||
elif o[0] == '-':
|
||||
if o[1] == 'l':
|
||||
ld_options.append(o)
|
||||
elif o[1] in string.uppercase and not o[1] in 'DUIC':
|
||||
ld_options.append(o)
|
||||
module_libraries[m] = ld_options
|
||||
#
|
||||
# See if we have to bother with base setups
|
||||
#
|
||||
if variables.has_key('BASESETUP'):
|
||||
if isinstalldir:
|
||||
raise 'installdir has base setup'
|
||||
setupfiles = string.split(variables['BASESETUP'])
|
||||
for s in setupfiles:
|
||||
if s[-6:] <> '/Setup':
|
||||
raise 'Incorrect BASESETUP', s
|
||||
s = s[:-6]
|
||||
if s[0] <> '/':
|
||||
s = name + '/' + s
|
||||
s = os.path.normpath(s)
|
||||
add_extension_directory(s, 0)
|
||||
#
|
||||
# Main routine for this module: given a build directory, get all
|
||||
# information needed for the linker.
|
||||
#
|
||||
def parse(dir):
|
||||
global include_path
|
||||
global lib_path
|
||||
global compiler
|
||||
|
||||
fp = open(dir + '/Makefile', 'r')
|
||||
#
|
||||
# First find the global libraries and the base python
|
||||
#
|
||||
vars = parse_makefile(fp)
|
||||
if vars.has_key('CC'):
|
||||
compiler = vars['CC']
|
||||
if not vars.has_key('installdir'):
|
||||
raise 'No $installdir in Makefile'
|
||||
include_path = vars['installdir'] + '/include/Py'
|
||||
lib_path = vars['installdir'] + '/lib/python/lib'
|
||||
global_libraries.append('-L' + lib_path)
|
||||
global_libraries.append('-lPython')
|
||||
global_libraries.append('-lParser')
|
||||
global_libraries.append('-lObjects')
|
||||
global_libraries.append('-lModules')
|
||||
for name in ('LIBS', 'LIBM', 'LIBC'):
|
||||
if not vars.has_key(name):
|
||||
raise 'Missing required def in Makefile', name
|
||||
for lib in string.split(vars[name]):
|
||||
global_libraries.append(lib)
|
||||
#
|
||||
# Next, parse the modules from the base python
|
||||
#
|
||||
add_extension_directory(lib_path, 1)
|
||||
#
|
||||
# Finally, parse the modules from the extension python
|
||||
#
|
||||
if dir <> lib_path:
|
||||
add_extension_directory(dir, 0)
|
||||
|
||||
# Call the main program
|
||||
main()
|
||||
Loading…
Reference in New Issue