Bugs item #1460514, was opened at 2006-03-29 10:28
Message generated for change (Comment added) made by theller
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Category: None
Group: Python 2.5
>Status: Closed
>Resolution: Fixed
Priority: 7
Submitted By: Andrew Dalke (dalke)
Assigned to: Thomas Heller (theller)
Summary: ctypes extension does not compile on Mac OS 10.3.9
Initial Comment:
I compiled Python from CVS this morning. It silently failed to compile
ctypes. Here is the text surrounding the failure
gcc [deleted] -c /Users/dalke/cvses/python-svn/Modules/_ctypes/
libffi/src/powerpc/darwin_closure.S -o build/temp.darwin-7.9.0-
Power_Macintosh-2.5/darwin_closure.o
darwin_closure.S:249:unknown section attribute: live_support
darwin_closure.S:249:Rest of line ignored. 1st junk character valued 69
(E).
building 'itertools' extension
...
Python installed but when I tried to import ctypes I got
File "/usr/local/lib/python2.5/ctypes/__init__.py", line 8, in
<module>
from _ctypes import Union, Structure, Array
ImportError: No module named _ctypes
I tracked it down to the '+live_support' attribute from the
darwin_closure.S. My compiler does not understand that.
Thomas Heller (in private email) pointed out the text from the ctypes
README
On OS X, the segment attribute live_support must be
defined. If your compiler doesn't know about it, upgrade or
set the environment variable CCASFLAGS="-Dno_live_support".
Upgrading is out of the option. I set the environment variable but that
did not fix things when I tried to recompile Python. However, editing
the file to remove the "+live_support" works. All the self-tests passed,
and my experimentation this afternoon was successful.
----------------------------------------------------------------------
>Comment By: Thomas Heller (theller)
Date: 2006-05-09 20:36
Message:
Logged In: YES
user_id=11105
I forgot to close this item.
----------------------------------------------------------------------
Comment By: Thomas Heller (theller)
Date: 2006-04-15 22:33
Message:
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user_id=11105
Thanks for the feedback.
For the warnings in Modules/_ctypes/cfield.c, I have no idea
what is wrong there.
For the warnings in the libffi-sources I tend to ignore them
because I don't want to change them too much.
For the test-failure: can you find out why this fails?
(In the meantime I'm trying to get hold of 10.3 installation
disks - any tips how to shrink the only existing partition
on my mac mini running 10.4 and setting up a multi-boot
system would be appreciated, if anyone wants to help. As an
alternative ssh-access to an existing osx installation for
testing would of course also help. I don't know if this is
feasible or not ;-)
----------------------------------------------------------------------
Comment By: Andrew Dalke (dalke)
Date: 2006-04-14 02:51
Message:
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user_id=190903
Sorry - was ill and not doing anything for a week.
I've built the latest code from SVN. No problems with the compilation and I
am able to import just fine.
I did get the following compiler warnings
/Users/dalke/cvses/python-svn/Modules/_ctypes/cfield.c: In function
`CField_repr':
/Users/dalke/cvses/python-svn/Modules/_ctypes/cfield.c:259: warning:
signed size_t format, Py_ssize_t arg (arg 3)
/Users/dalke/cvses/python-svn/Modules/_ctypes/cfield.c:267: warning:
signed size_t format, Py_ssize_t arg (arg 3)
/Users/dalke/cvses/python-svn/Modules/_ctypes/libffi/src/powerpc/
ffi_darwin.c:383: warning: function declaration isn't a prototype
/Users/dalke/cvses/python-svn/Modules/_ctypes/libffi/src/powerpc/
ffi_darwin.c:384: warning: function declaration isn't a prototype
/Users/dalke/cvses/python-svn/Modules/_ctypes/libffi/src/powerpc/
ffi_darwin.c:388: warning: function declaration isn't a prototype
/Users/dalke/cvses/python-svn/Modules/_ctypes/libffi/src/powerpc/
ffi_darwin.c:389: warning: function declaration isn't a prototype
/Users/dalke/cvses/python-svn/Modules/_ctypes/libffi/src/powerpc/
ffi_darwin.c:394: warning: function declaration isn't a prototype
/Users/dalke/cvses/python-svn/Modules/_ctypes/libffi/src/powerpc/
ffi_darwin.c: In function `ffi_closure_helper_DARWIN':
/Users/dalke/cvses/python-svn/Modules/_ctypes/libffi/src/powerpc/
ffi_darwin.c:622: warning: unused variable `temp_ld'
When I run the self test I get one error
FAILED (errors=1)
Traceback (most recent call last):
File "Lib/test/test_ctypes.py", line 12, in <module>
test_main()
File "Lib/test/test_ctypes.py", line 9, in test_main
run_suite(unittest.TestSuite(suites))
File "/Users/dalke/cvses/python-svn/Lib/test/test_support.py", line 285, in
run_suite
raise TestFailed(err)
test.test_support.TestFailed: Traceback (most recent call last):
File "/Users/dalke/cvses/python-svn/Lib/ctypes/test/test_loading.py", line
30, in test_load
cdll.load(libc_name)
File "/Users/dalke/cvses/python-svn/Lib/ctypes/_loader.py", line 112, in
load
return self._load(libname, mode)
File "/Users/dalke/cvses/python-svn/Lib/ctypes/_loader.py", line 153, in
_load
return self.load_library(pathname, mode)
File "/Users/dalke/cvses/python-svn/Lib/ctypes/_loader.py", line 124, in
load_library
return self._dlltype(libname, mode)
File "/Users/dalke/cvses/python-svn/Lib/ctypes/__init__.py", line 288, in
__init__
self._handle = _dlopen(self._name, mode)
OSError: dlcompat: unable to open this file with RTLD_LOCAL
which is probably ignorable - OS X has its own sense of what shared libraries
do.
----------------------------------------------------------------------
Comment By: Thomas Heller (theller)
Date: 2006-04-03 22:18
Message:
Logged In: YES
user_id=11105
As a temporary fix, I removed the '+live_support' attribute
in the source file. Andrew, can you please verify that this
works for you?
Thanks, Thomas
----------------------------------------------------------------------
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