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Tools/freeze/nfreeze.py

+#! /usr/local/bin/python
+
+# "Freeze" a Python script into a binary.
+# Usage: see variable usage_msg below (before the imports!)
+
+# This version builds the frozen binary in a temporary directory;
+# courtesy Jaap Vermeulen.  Use the -l option to get the functionality
+# of the standard version.
+
+# HINTS:
+# - Edit the lines marked XXX below to localize.
+# - You must have done "make inclinstall libainstall" in the Python
+#   build directory.
+# - The script should not use dynamically loaded modules
+#   (*.so on most systems).
+
+
+# Usage message
+
+usage_msg = """
+usage: freeze [-p prefix] [-e extension] [-l] ... script [module] ...
+
+-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.)
+              The default is /usr/local.
+
+-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.
+
+-l:           Local compilation. Instead of using a temporary directory
+              that is removed after succesful compilation, the current
+              directory is used and temporary files are not removed.
+
+script:       The Python script to be executed by the resulting binary.
+
+module ...:   Additional Python modules (referenced by pathname)
+              that will be included in the resulting binary.  These
+              may be .py or .pyc files.
+"""
+
+
+# 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'
+
+# XXX Change the following line to point to your favority temporary  directory
+TMPDIR = '/usr/tmp'
+
+
+# Import standard modules
+
+import cmp
+import getopt
+import os
+import string
+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
+addpack.addpack(pack)
+
+
+# Establish temporary directory name
+
+tmpdir = os.path.join(TMPDIR, 'freeze.' + `os.getpid()`)
+
+
+# Import the freeze-private modules
+
+import checkextensions
+import findmodules
+import makeconfig
+import makefreeze
+import makemakefile
+import parsesetup
+
+
+# Main program
+
+def main():
+	# module variable
+	global tmpdir
+
+	# overridable context
+	prefix = PREFIX			# settable with -p option
+	extensions = []
+	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:l')
+	except getopt.error, msg:
+		usage('getopt error: ' + str(msg))
+
+	# proces option arguments
+	for o, a in opts:
+		if o == '-e':
+			extensions.append(a)
+		if o == '-l':
+			tmpdir = None
+		if o == '-p':
+			prefix = a
+
+	# locations derived from options
+	binlib = os.path.join(prefix, 'lib/python/lib')
+	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')
+	makefile_in = os.path.join(binlib, 'Makefile')
+	defines = ['-DHAVE_CONFIG_H', '-DUSE_FROZEN', '-DNO_MAIN',
+		   '-DPYTHONPATH=\\"$(PYTHONPATH)\\"']
+	includes = ['-I' + incldir, '-I' + binlib]
+
+	# sanity check of directories and files
+	for dir in [prefix, binlib, incldir] + extensions:
+		if not os.path.exists(dir):
+			usage('needed directory %s not found' % dir)
+		if not os.path.isdir(dir):
+			usage('%s: not a directory' % dir)
+	for file in config_c_in, makefile_in, frozenmain_c:
+		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')
+
+	# 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:
+			target = base + '.bin'
+
+	# use temporary directory
+	if tmpdir:
+		try: os.mkdir(tmpdir, 0700)
+		except os.error, errmsg:
+			sys.stderr.write('mkdir: (%s) %s\n' % errmsg)
+			sys.stderr.write('Error: cannot create temporary directory: %s\n' % (tmpdir,))
+			sys.exit(2)
+		frozen_c = os.path.join(tmpdir, frozen_c)
+		config_c = os.path.join(tmpdir, config_c)
+		makefile = os.path.join(tmpdir, makefile)
+
+	dict = findmodules.findmodules(scriptfile, modules, path)
+
+	# Actual work starts here...
+
+	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)
+
+	builtins = []
+	unknown = []
+	mods = dict.keys()
+	mods.sort()
+	for mod in mods:
+		if dict[mod] == '<builtin>':
+			builtins.append(mod)
+		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()
+	infp = open(config_c_in)
+	backup = config_c + '~'
+	try:
+		os.rename(config_c, backup)
+	except os.error:
+		backup = None
+	outfp = open(config_c, 'w')
+	try:
+		makeconfig.makeconfig(infp, outfp, builtins)
+	finally:
+		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)
+
+	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 = ['$(OPT)', config_c, frozen_c, frozenmain_c] + \
+		addfiles + libs + \
+		['$(MODLIBS)', '$(LIBS)', '$(SYSLIBS)']
+
+	backup = makefile + '~'
+	try:
+		os.rename(makefile, backup)
+	except os.error:
+		backup = None
+	outfp = open(makefile, 'w')
+	try:
+		makemakefile.makemakefile(outfp, somevars, files, target)
+	finally:
+		outfp.close()
+	if backup:
+		if not cmp.cmp(backup, makefile):
+			print 'previous Makefile saved as', backup
+
+	# Done!
+
+	if tmpdir:
+		# Run make
+		curdir = os.getcwd()
+		os.chdir(tmpdir)
+		status = os.system('make > /dev/null')
+		os.chdir(curdir)
+
+		if status:
+			sys.stderr.write('Compilation failed. Files left in %s\n' % 
+	 (tmpdir,))
+		else:
+			tmptarget = os.path.join(tmpdir, target)
+			try: os.rename(tmptarget, target)
+			except os.error:
+				os.system('cp %s %s' % (tmptarget, target))
+			os.system('rm -rf %s' % (tmpdir,))
+			print 'Frozen target:', target
+		tmpdir = None
+	else:
+		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)
+
+
+try: main()
+finally:
+	if tmpdir:
+		os.system('rm -rf %s' % (tmpdir,))