/Mac/Tools/fixapplepython23.py
Python | 130 lines | 122 code | 0 blank | 8 comment | 0 complexity | 495aabc5364c9839e4d06316366ecaf1 MD5 | raw file
- #!/usr/bin/python
- """fixapplepython23 - Fix Apple-installed Python 2.3 (on Mac OS X 10.3)
- Python 2.3 (and 2.3.X for X<5) have the problem that building an extension
- for a framework installation may accidentally pick up the framework
- of a newer Python, in stead of the one that was used to build the extension.
- This script modifies the Makefile (in .../lib/python2.3/config) to use
- the newer method of linking extensions with "-undefined dynamic_lookup"
- which fixes this problem.
- The script will first check all prerequisites, and return a zero exit
- status also when nothing needs to be fixed.
- """
- import sys
- import os
- import gestalt
- MAKEFILE='/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/config/Makefile'
- CHANGES=((
- 'LDSHARED=\t$(CC) $(LDFLAGS) -bundle -framework $(PYTHONFRAMEWORK)\n',
- 'LDSHARED=\t$(CC) $(LDFLAGS) -bundle -undefined dynamic_lookup\n'
- ),(
- 'BLDSHARED=\t$(CC) $(LDFLAGS) -bundle -framework $(PYTHONFRAMEWORK)\n',
- 'BLDSHARED=\t$(CC) $(LDFLAGS) -bundle -undefined dynamic_lookup\n'
- ),(
- 'CC=\t\tgcc\n',
- 'CC=\t\t/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/config/PantherPythonFix/run-gcc\n'
- ),(
- 'CXX=\t\tc++\n',
- 'CXX=\t\t/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/config/PantherPythonFix/run-g++\n'
- ))
- GCC_SCRIPT='/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/config/PantherPythonFix/run-gcc'
- GXX_SCRIPT='/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/config/PantherPythonFix/run-g++'
- SCRIPT="""#!/bin/sh
- export MACOSX_DEPLOYMENT_TARGET=10.3
- exec %s "${@}"
- """
- def findline(lines, start):
- """return line starting with given string or -1"""
- for i in range(len(lines)):
- if lines[i][:len(start)] == start:
- return i
- return -1
- def fix(makefile, do_apply):
- """Fix the Makefile, if required."""
- fixed = False
- lines = open(makefile).readlines()
- for old, new in CHANGES:
- i = findline(lines, new)
- if i >= 0:
- # Already fixed
- continue
- i = findline(lines, old)
- if i < 0:
- print 'fixapplepython23: Python installation not fixed (appears broken)'
- print 'fixapplepython23: missing line:', old
- return 2
- lines[i] = new
- fixed = True
- if fixed:
- if do_apply:
- print 'fixapplepython23: Fix to Apple-installed Python 2.3 applied'
- os.rename(makefile, makefile + '~')
- open(makefile, 'w').writelines(lines)
- return 0
- else:
- print 'fixapplepython23: Fix to Apple-installed Python 2.3 should be applied'
- return 1
- else:
- print 'fixapplepython23: No fix needed, appears to have been applied before'
- return 0
- def makescript(filename, compiler):
- """Create a wrapper script for a compiler"""
- dirname = os.path.split(filename)[0]
- if not os.access(dirname, os.X_OK):
- os.mkdir(dirname, 0755)
- fp = open(filename, 'w')
- fp.write(SCRIPT % compiler)
- fp.close()
- os.chmod(filename, 0755)
- print 'fixapplepython23: Created', filename
- def main():
- # Check for -n option
- if len(sys.argv) > 1 and sys.argv[1] == '-n':
- do_apply = False
- else:
- do_apply = True
- # First check OS version
- if sys.byteorder == 'little':
- # All intel macs are fine
- print "fixapplypython23: no fix is needed on MacOSX on Intel"
- sys.exit(0)
- if gestalt.gestalt('sysv') < 0x1030:
- print 'fixapplepython23: no fix needed on MacOSX < 10.3'
- sys.exit(0)
- if gestalt.gestalt('sysv') >= 0x1040:
- print 'fixapplepython23: no fix needed on MacOSX >= 10.4'
- sys.exit(0)
- # Test that a framework Python is indeed installed
- if not os.path.exists(MAKEFILE):
- print 'fixapplepython23: Python framework does not appear to be installed (?), nothing fixed'
- sys.exit(0)
- # Check that we can actually write the file
- if do_apply and not os.access(MAKEFILE, os.W_OK):
- print 'fixapplepython23: No write permission, please run with "sudo"'
- sys.exit(2)
- # Create the shell scripts
- if do_apply:
- if not os.access(GCC_SCRIPT, os.X_OK):
- makescript(GCC_SCRIPT, "gcc")
- if not os.access(GXX_SCRIPT, os.X_OK):
- makescript(GXX_SCRIPT, "g++")
- # Finally fix the makefile
- rv = fix(MAKEFILE, do_apply)
- #sys.exit(rv)
- sys.exit(0)
- if __name__ == '__main__':
- main()