cpython/Tools/freeze/freeze.py

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#! /usr/local/bin/python
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# "Freeze" a Python script into a binary.
# Usage: see variable usage_msg below (before the imports!)
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# HINTS:
# - Edit the lines marked XXX below to localize.
# - Make sure the #! line above matches the localizations.
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# - You must have done "make inclinstall libainstall" in the Python
# build directory.
# - The script name should end in ".py".
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# - The script should not use dynamically loaded modules
# (*.so on most systems).
# Usage message
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usage_msg = """
usage: freeze [-p prefix] [-P exec_prefix] [-e extension] script [module] ...
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-p prefix: This is the prefix used when you ran
'Make inclinstall libainstall' in the Python build directory.
(If you never ran this, freeze won't work.)
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The default is /usr/local.
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-P exec_prefix: Like -p but this is the 'exec_prefix', used to
install objects etc. The default is the value for -p.
-e extension: A directory containing additional .o files that
may be used to resolve modules. This directory
should also have a Setup file describing the .o files.
More than one -e option may be given.
script: The Python script to be executed by the resulting binary.
It *must* end with a .py suffix!
module ...: Additional Python modules (referenced by pathname)
that will be included in the resulting binary. These
may be .py or .pyc files.
NOTES:
In order to use freeze successfully, you must have built Python and
installed it. In particular, the following two non-standard make
targets must have been executed:
make inclinstall
make libainstall # Note: 'liba', not 'lib'
The -p and -P options passed into the freeze script must correspond to
the --prefix and --exec-prefix options passed into Python's configure
script.
"""
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# XXX Change the following line to point to your Tools/freeze directory
PACK = '/ufs/guido/src/python/Tools/freeze'
# XXX Change the following line to point to your install prefix
PREFIX = '/usr/local'
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# XXX Change the following line to point to your install exec_prefix
EXEC_PREFIX = None # If None, use -p option for default
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# Import standard modules
import cmp
import getopt
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import os
import string
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import sys
import addpack
# Set the directory to look for the freeze-private modules
dir = os.path.dirname(sys.argv[0])
if dir:
pack = dir
else:
pack = PACK
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addpack.addpack(pack)
# Import the freeze-private modules
import checkextensions
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import findmodules
import makeconfig
import makefreeze
import makemakefile
import parsesetup
# Main program
def main():
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# overridable context
prefix = PREFIX # settable with -p option
exec_prefix = None # settable with -P option
extensions = []
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path = sys.path
# output files
frozen_c = 'frozen.c'
config_c = 'config.c'
target = 'a.out' # normally derived from script name
makefile = 'Makefile'
# parse command line
try:
opts, args = getopt.getopt(sys.argv[1:], 'e:p:P:')
except getopt.error, msg:
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usage('getopt error: ' + str(msg))
# proces option arguments
for o, a in opts:
if o == '-e':
extensions.append(a)
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if o == '-p':
prefix = a
if o == '-P':
exec_prefix = a
# default exec_prefix
if exec_prefix is None:
exec_prefix = EXEC_PREFIX
if exec_prefix is None:
exec_prefix = prefix
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# locations derived from options
binlib = os.path.join(exec_prefix, 'lib/python/lib')
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incldir = os.path.join(prefix, 'include/Py')
config_c_in = os.path.join(binlib, 'config.c.in')
frozenmain_c = os.path.join(binlib, 'frozenmain.c')
getpath_c = os.path.join(binlib, 'getpath.c')
supp_sources = [frozenmain_c, getpath_c]
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makefile_in = os.path.join(binlib, 'Makefile')
defines = ['-DHAVE_CONFIG_H',
'-DPYTHONPATH=\\"$(PYTHONPATH)\\"']
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includes = ['-I' + incldir, '-I' + binlib]
# sanity check of directories and files
for dir in [prefix, exec_prefix, binlib, incldir] + extensions:
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if not os.path.exists(dir):
usage('needed directory %s not found' % dir)
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if not os.path.isdir(dir):
usage('%s: not a directory' % dir)
for file in [config_c_in, makefile_in] + supp_sources:
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if not os.path.exists(file):
usage('needed file %s not found' % file)
if not os.path.isfile(file):
usage('%s: not a plain file' % file)
for dir in extensions:
setup = os.path.join(dir, 'Setup')
if not os.path.exists(setup):
usage('needed file %s not found' % setup)
if not os.path.isfile(setup):
usage('%s: not a plain file' % setup)
# check that enough arguments are passed
if not args:
usage('at least one filename argument required')
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# check that file arguments exist
for arg in args:
if not os.path.exists(arg):
usage('argument %s not found' % arg)
if not os.path.isfile(arg):
usage('%s: not a plain file' % arg)
# process non-option arguments
scriptfile = args[0]
modules = args[1:]
# derive target name from script name
base = os.path.basename(scriptfile)
base, ext = os.path.splitext(base)
if base:
if base != scriptfile:
target = base
else:
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target = base + '.bin'
# Actual work starts here...
dict = findmodules.findmodules(scriptfile, modules, path)
names = dict.keys()
names.sort()
print "Modules being frozen:"
for name in names:
print '\t', name
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backup = frozen_c + '~'
try:
os.rename(frozen_c, backup)
except os.error:
backup = None
outfp = open(frozen_c, 'w')
try:
makefreeze.makefreeze(outfp, dict)
finally:
outfp.close()
if backup:
if cmp.cmp(backup, frozen_c):
sys.stderr.write('%s not changed, not written\n' %
frozen_c)
os.rename(backup, frozen_c)
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builtins = []
unknown = []
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mods = dict.keys()
mods.sort()
for mod in mods:
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if dict[mod] == '<builtin>':
builtins.append(mod)
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elif dict[mod] == '<unknown>':
unknown.append(mod)
addfiles = []
if unknown:
addfiles, addmods = \
checkextensions.checkextensions(unknown, extensions)
for mod in addmods:
unknown.remove(mod)
builtins = builtins + addmods
if unknown:
sys.stderr.write('Warning: unknown modules remain: %s\n' %
string.join(unknown))
builtins.sort()
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infp = open(config_c_in)
backup = config_c + '~'
try:
os.rename(config_c, backup)
except os.error:
backup = None
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outfp = open(config_c, 'w')
try:
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makeconfig.makeconfig(infp, outfp, builtins)
finally:
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outfp.close()
infp.close()
if backup:
if cmp.cmp(backup, config_c):
sys.stderr.write('%s not changed, not written\n' %
config_c)
os.rename(backup, config_c)
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cflags = defines + includes + ['$(OPT)']
libs = []
for n in 'Modules', 'Python', 'Objects', 'Parser':
n = 'lib%s.a' % n
n = os.path.join(binlib, n)
libs.append(n)
makevars = parsesetup.getmakevars(makefile_in)
somevars = {}
for key in makevars.keys():
somevars[key] = makevars[key]
somevars['CFLAGS'] = string.join(cflags) # override
files = ['$(OPT)', config_c, frozen_c] + \
supp_sources + addfiles + libs + \
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['$(MODLIBS)', '$(LIBS)', '$(SYSLIBS)']
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backup = makefile + '~'
try:
os.rename(makefile, backup)
except os.error:
backup = None
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outfp = open(makefile, 'w')
try:
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makemakefile.makemakefile(outfp, somevars, files, target)
finally:
outfp.close()
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if backup:
if not cmp.cmp(backup, makefile):
print 'previous Makefile saved as', backup
else:
sys.stderr.write('%s not changed, not written\n' %
makefile)
os.rename(backup, makefile)
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# Done!
print 'Now run make to build the target:', target
# Print usage message and exit
def usage(msg = None):
if msg:
sys.stderr.write(str(msg) + '\n')
sys.stderr.write(usage_msg)
sys.exit(2)
main()