Michael Felt added the comment:
The "core" changes in this patch are very simple - in parallel with the way
find_library() is managed in util.py
a) __init__.py:
add an additional mode bit for call to dlopen() (in __init__.py)
diff -u src/Python-2.7.12/Lib/ctypes/__init__.py
python-2.7.12.2/Lib/ctypes/__init__.py
--- src/Python-2.7.12/Lib/ctypes/__init__.py 2016-06-25 21:49:30 +0000
+++ python-2.7.12.2/Lib/ctypes/__init__.py 2016-09-28 12:55:15 +0000
@@ -352,6 +352,16 @@
flags |= _FUNCFLAG_USE_ERRNO
if use_last_error:
flags |= _FUNCFLAG_USE_LASTERROR
+ if _sys.platform.startswith("aix"):
+ """When the name contains ".a(" and ends with ")",
+ asin "libFOO.a(libFOO.so)" this is taken to be an
+ archive(member) syntax for dlopen(), and the mode is adjusted.
+ Otherwise, name is presented to dlopen() as a file argument.
+ """
+ # from _ctypes import RTLD_NOW - not until Python3.7
+ if name and name.endswith(")") and ".a(" in name:
+ RTLD_MEMBER = 0x00040000
+ mode |= RTLD_MEMBER
class _FuncPtr(_CFuncPtr):
_flags_ = flags
b) util.py:
determine that is is not generic posix and call and import
and execute an external .py file
c) some prettier (optional!) print statements in self-test
diff -u src/Python-2.7.12/Lib/ctypes/util.py python-2.7.12.2/Lib/ctypes/util.py
--- src/Python-2.7.12/Lib/ctypes/util.py 2016-06-25 21:49:30 +0000
+++ python-2.7.12.2/Lib/ctypes/util.py 2016-09-28 08:41:57 +0000
@@ -81,6 +81,14 @@
continue
return None
+if sys.platform.startswith("aix"):
+ # find .so members in .a files
+ # using dump loader header information + sys.
+ import ctypes._aix as aix
+
+ def find_library(name):
+ return aix.find_library(name)
+
elif os.name == "posix":
# Andreas Degert's find functions, using gcc, /sbin/ldconfig, objdump
import re, tempfile, errno
@@ -247,10 +255,11 @@
print find_library("msvcrt")
if os.name == "posix":
- # find and load_version
- print find_library("m")
- print find_library("c")
- print find_library("bz2")
+ # find
+ print("m\t:: %s" % find_library("m"))
+ print("c\t:: %s" % find_library("c"))
+ print("bz2\t:: %s" % find_library("bz2"))
+ print("crypt\t:: %s" % find_library("crypt"))
# getattr
## print cdll.m
@@ -262,6 +271,12 @@
print cdll.LoadLibrary("libcrypto.dylib")
print cdll.LoadLibrary("libSystem.dylib")
print cdll.LoadLibrary("System.framework/System")
+ elif sys.platform.startswith("aix"):
+ print("crypto\t:: %s" % cdll.LoadLibrary(find_library("crypto")))
+ if (sys.maxsize < 2**32):
+ print("c\t:: %s" % cdll.LoadLibrary("libc.a(shr.o)"))
+ else:
+ print("c\t:: %s" % cdll.LoadLibrary("libc.a(shr_64.o)"))
else:
print cdll.LoadLibrary("libm.so")
print cdll.LoadLibrary("libcrypt.so")
d) in test_loading.py say test is failed if find_library does not find
at least one library
diff -u src/Python-2.7.12/Lib/ctypes/test/test_loading.py
python-2.7.12.2/Lib/ctypes/test/test_loading.py
--- src/Python-2.7.12/Lib/ctypes/test/test_loading.py 2016-06-25 21:49:30
+0000
+++ python-2.7.12.2/Lib/ctypes/test/test_loading.py 2016-09-28 12:43:46
+0000
@@ -11,6 +11,11 @@
libc_name = "coredll"
elif sys.platform == "cygwin":
libc_name = "cygwin1.dll"
+elif sys.platform.startswith("aix"):
+ if (sys.maxsize < 2**32):
+ libc_name = "libc.a(shr.o)"
+ else:
+ libc_name = "libc.a(shr_64.o)"
else:
libc_name = find_library("c")
@@ -38,11 +43,16 @@
self.assertRaises(OSError, cdll.LoadLibrary, self.unknowndll)
def test_find(self):
+ # to track that at least one call to find_library() found something
+ found = False
for name in ("c", "m"):
lib = find_library(name)
if lib:
+ found = True
cdll.LoadLibrary(lib)
CDLL(lib)
+ # test is FAILED if nothing was found
+ self.assertTrue(found)
@unittest.skipUnless(os.name in ("nt", "ce"),
'test specific to Windows (NT/CE)')
Finally - there is the additional file: _aix.py - submitted as an attachment -
and a patch with them all
----------
Added file: http://bugs.python.org/file44868/Python2.7.Lib.ctypes.160928.patch
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue27435>
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