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Posted to pylucene-dev@lucene.apache.org by Bill Janssen <ja...@parc.com> on 2010/12/01 22:18:32 UTC

Re: building PyLucene 3.0.2 on Win7/MinGW with Python 2.7

Andi Vajda <va...@apache.org> wrote:

> I believe MSVC 2008 == 9.0 but I could be wrong. I also seem to recall
> that Python 2.7 requires that version. So you should also try Python
> 2.6 on Win 7.

I asked about this on the mingw list, with the following result:

Charles Wilson <cw...@users.sourceforge.net> wrote:

> The official python.org win32 python26 distribution
> uses the msvcr90.dll libc; anything compiled with mingw uses the
> msvcrt.dll, and THAT may be the problem.
> 
> See here:
> http://jove.prohosting.com/iwave/ipython/issues.html
> ...
> There is a way to hack your mingw
> installation to use the msvcr90.dll runtime, but I've never tried it
> myself. See this wiki page:
> http://www.mingw.org/wiki/HOWTO_Use_the_GCC_specs_file

I'll try that -- getting mingw to use the same C library that Python
uses.  Looks like you can do an in-place update -- the pyMinGW toolkit
provides a tool which does that.

Bill

Re: building PyLucene 3.0.2 on Win7/MinGW with Python 2.7

Posted by Bill Janssen <ja...@parc.com>.
Thomas Koch <ko...@orbiteam.de> wrote:

> Bill,
> I just read through your posting about the MinGW issues in "DLL Hell". Did
> you ever manage to get MinGW compile JCC and link against msvcr90.dll?

No, but I didn't try very hard.  Other things came up and I haven't
gotten back to it yet.

Bill

> I think I'm facing a similar issue (see post of today) and tried to change
> MinGW spec to use msvcr90 (as mentioned in
> http://www.mingw.org/wiki/HOWTO_Use_the_GCC_specs_file) but then "python
> setup.py build --compiler=mingw32" runs in to ldd issues (I guess that's
> because I still need to "hack" minGW itself...) - see attached output.
> 
> > I'll try that -- getting mingw to use the same C library that Python
> > uses.  Looks like you can do an in-place update -- the pyMinGW toolkit
> > provides a tool which does that.
> >
> (How) did you manage that?
> 
> Regards
> Thomas
> --
> Here's the output:
> 
> I:\Software\Python26\PyLucene\src\pylucene-3.3-2\jcc>python setup.py build
> --compiler=mingw32
> ...
> running build_py
> writing I:\Software\Python26\PyLucene\src\pylucene-3.3-2\jcc\jcc\config.py
> copying jcc\config.py -> build\lib.win32-2.6\jcc
> copying jcc\jcc.lib -> build\lib.win32-2.6\jcc
> copying jcc\classes\org\apache\jcc\PythonVM.class ->
> build\lib.win32-2.6\jcc\classes\org\apache\jcc
> copying jcc\classes\org\apache\jcc\PythonException.class ->
> build\lib.win32-2.6\jcc\classes\org\apache\jcc
> running build_ext
> building 'jcc' extension
> C:\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall -D_jcc_lib -DJCC_VER="2.10"
> -IC:\Devel\Java\jdk1.6.0_14/include
> -IC:\Devel\Java\jdk1.6.0_14/include/win32 -I_jcc
>  -Ijcc/sources -IC:\Devel\Python26\include -IC:\Devel\Python26\PC -c
> jcc/sources/jcc.cpp -o build\temp.win32-2.6\Release\jcc\sources\jcc.o
> -DPYTHON -specs=msvcr
> 90 -fno-strict-aliasing -Wno-write-strings
> C:\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall -D_jcc_lib -DJCC_VER="2.10"
> -IC:\Devel\Java\jdk1.6.0_14/include
> -IC:\Devel\Java\jdk1.6.0_14/include/win32 -I_jcc
>  -Ijcc/sources -IC:\Devel\Python26\include -IC:\Devel\Python26\PC -c
> jcc/sources/JCCEnv.cpp -o build\temp.win32-2.6\Release\jcc\sources\jccenv.o
> -DPYTHON -specs
> =msvcr90 -fno-strict-aliasing -Wno-write-strings
> writing build\temp.win32-2.6\Release\jcc\sources\jcc.def
> C:\MinGW\bin\g++.exe -mno-cygwin -shared
> -Wl,--out-implib,build\lib.win32-2.6\jcc\jcc.lib -s
> build\temp.win32-2.6\Release\jcc\sources\jcc.o build\temp.win32-2.6
> \Release\jcc\sources\jccenv.o
> build\temp.win32-2.6\Release\jcc\sources\jcc.def -LC:\Devel\Python26\libs
> -LC:\Devel\Python26\PCbuild -lpython26 -lmsvcr90 -o buil
> d\lib.win32-2.6\jcc.dll -LC:\Devel\Java\jdk1.6.0_14/lib -ljvm -Wl,-S
> -Wl,--out-implib,jcc\jcc.lib
> Creating library file: jcc\jcc.lib
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
> xe): undefined reference to `GetModuleHandleA@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
> x23): undefined reference to `GetProcAddress@8'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
> x51): undefined reference to `GetModuleHandleA@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
> x66): undefined reference to `GetProcAddress@8'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
> x9a): undefined reference to `GetModuleHandleA@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
> xaf): undefined reference to `GetProcAddress@8'
> build\temp.win32-2.6\Release\jcc\sources\jcc.o:jcc.cpp:(.text$_ZNK6JCCEnv10g
> et_vm_envEv[JCCEnv::get_vm_env() const]+0xf): undefined reference to
> `TlsGetValue@4'
> 
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x10):
> undefined reference to `TlsAlloc@0'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x29):
> undefined reference to `TlsSetValue@8'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x24d7):
> undefined reference to `InitializeCriticalSection@4'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x254c):
> undefined reference to `EnterCriticalSection@4'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x263a):
> undefined reference to `LeaveCriticalSection@4'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x2677):
> undefined reference to `LeaveCriticalSection@4'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x26f2):
> undefined reference to `EnterCriticalSection@4'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x27e5):
> undefined reference to `LeaveCriticalSection@4'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text$_ZN4lock
> D1Ev[lock::~lock()]+0x18): undefined reference to `LeaveCriticalSection@4'
> build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text$_ZN4lock
> D0Ev[lock::~lock()]+0x19): undefined reference to `LeaveCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
> .c:(.text+0xa8): undefined reference to `LoadLibraryA@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
> .c:(.text+0xc8): undefined reference to `GetProcAddress@8'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
> .c:(.text+0xe5): undefined reference to `GetProcAddress@8'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
> .c:(.text+0x15f): undefined reference to `FreeLibrary@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(pseudo-reloc.o):
> pseudo-reloc.c:(.text+0x89): undefined reference to `VirtualQuery@12'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(pseudo-reloc.o):
> pseudo-reloc.c:(.text+0xbe): undefined reference to `VirtualProtect@16'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(pseudo-reloc.o):
> pseudo-reloc.c:(.text+0xfe): undefined reference to `VirtualProtect@16'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x20): undefined reference to `EnterCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x37): undefined reference to `TlsGetValue@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x41): undefined reference to `GetLastError@0'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x64): undefined reference to `LeaveCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0xc2): undefined reference to `DeleteCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0xf8): undefined reference to `InitializeCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x138): undefined reference to `EnterCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x167): undefined reference to `LeaveCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x18b): undefined reference to `LeaveCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x1e7): undefined reference to `EnterCriticalSection@4'
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
> rd.c:(.text+0x204): undefined reference to `LeaveCriticalSection@4'
> collect2: ld returned 1 exit status
> error: command 'g++' failed with exit status 1
> 
> > -----Original Message-----
> > From: Bill Janssen [mailto:janssen@parc.com]
> > Sent: Wednesday, December 01, 2010 10:19 PM
> > To: pylucene-dev@lucene.apache.org
> > Cc: janssen@parc.com
> > Subject: Re: building PyLucene 3.0.2 on Win7/MinGW with Python 2.7
> > 
> > Andi Vajda <va...@apache.org> wrote:
> > 
> > > I believe MSVC 2008 == 9.0 but I could be wrong. I also seem to recall
> > > that Python 2.7 requires that version. So you should also try Python
> > > 2.6 on Win 7.
> > 
> > I asked about this on the mingw list, with the following result:
> > 
> > Charles Wilson <cw...@users.sourceforge.net> wrote:
> > 
> > > The official python.org win32 python26 distribution
> > > uses the msvcr90.dll libc; anything compiled with mingw uses the
> > > msvcrt.dll, and THAT may be the problem.
> > >
> > > See here:
> > > http://jove.prohosting.com/iwave/ipython/issues.html
> > > ...
> > > There is a way to hack your mingw
> > > installation to use the msvcr90.dll runtime, but I've never tried it
> > > myself. See this wiki page:
> > > http://www.mingw.org/wiki/HOWTO_Use_the_GCC_specs_file
> > 
> > I'll try that -- getting mingw to use the same C library that Python
> > uses.  Looks like you can do an in-place update -- the pyMinGW toolkit
> > provides a tool which does that.
> > 
> > Bill
> 
> 

RE: building PyLucene 3.0.2 on Win7/MinGW with Python 2.7

Posted by Thomas Koch <ko...@orbiteam.de>.
Bill,
I just read through your posting about the MinGW issues in "DLL Hell". Did
you ever manage to get MinGW compile JCC and link against msvcr90.dll?

I think I'm facing a similar issue (see post of today) and tried to change
MinGW spec to use msvcr90 (as mentioned in
http://www.mingw.org/wiki/HOWTO_Use_the_GCC_specs_file) but then "python
setup.py build --compiler=mingw32" runs in to ldd issues (I guess that's
because I still need to "hack" minGW itself...) - see attached output.

> I'll try that -- getting mingw to use the same C library that Python
> uses.  Looks like you can do an in-place update -- the pyMinGW toolkit
> provides a tool which does that.
>
(How) did you manage that?

Regards
Thomas
--
Here's the output:

I:\Software\Python26\PyLucene\src\pylucene-3.3-2\jcc>python setup.py build
--compiler=mingw32
...
running build_py
writing I:\Software\Python26\PyLucene\src\pylucene-3.3-2\jcc\jcc\config.py
copying jcc\config.py -> build\lib.win32-2.6\jcc
copying jcc\jcc.lib -> build\lib.win32-2.6\jcc
copying jcc\classes\org\apache\jcc\PythonVM.class ->
build\lib.win32-2.6\jcc\classes\org\apache\jcc
copying jcc\classes\org\apache\jcc\PythonException.class ->
build\lib.win32-2.6\jcc\classes\org\apache\jcc
running build_ext
building 'jcc' extension
C:\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall -D_jcc_lib -DJCC_VER="2.10"
-IC:\Devel\Java\jdk1.6.0_14/include
-IC:\Devel\Java\jdk1.6.0_14/include/win32 -I_jcc
 -Ijcc/sources -IC:\Devel\Python26\include -IC:\Devel\Python26\PC -c
jcc/sources/jcc.cpp -o build\temp.win32-2.6\Release\jcc\sources\jcc.o
-DPYTHON -specs=msvcr
90 -fno-strict-aliasing -Wno-write-strings
C:\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall -D_jcc_lib -DJCC_VER="2.10"
-IC:\Devel\Java\jdk1.6.0_14/include
-IC:\Devel\Java\jdk1.6.0_14/include/win32 -I_jcc
 -Ijcc/sources -IC:\Devel\Python26\include -IC:\Devel\Python26\PC -c
jcc/sources/JCCEnv.cpp -o build\temp.win32-2.6\Release\jcc\sources\jccenv.o
-DPYTHON -specs
=msvcr90 -fno-strict-aliasing -Wno-write-strings
writing build\temp.win32-2.6\Release\jcc\sources\jcc.def
C:\MinGW\bin\g++.exe -mno-cygwin -shared
-Wl,--out-implib,build\lib.win32-2.6\jcc\jcc.lib -s
build\temp.win32-2.6\Release\jcc\sources\jcc.o build\temp.win32-2.6
\Release\jcc\sources\jccenv.o
build\temp.win32-2.6\Release\jcc\sources\jcc.def -LC:\Devel\Python26\libs
-LC:\Devel\Python26\PCbuild -lpython26 -lmsvcr90 -o buil
d\lib.win32-2.6\jcc.dll -LC:\Devel\Java\jdk1.6.0_14/lib -ljvm -Wl,-S
-Wl,--out-implib,jcc\jcc.lib
Creating library file: jcc\jcc.lib
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
xe): undefined reference to `GetModuleHandleA@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
x23): undefined reference to `GetProcAddress@8'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
x51): undefined reference to `GetModuleHandleA@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
x66): undefined reference to `GetProcAddress@8'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
x9a): undefined reference to `GetModuleHandleA@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/crtbegin.o:cygming-crtbegin.c:(.text+0
xaf): undefined reference to `GetProcAddress@8'
build\temp.win32-2.6\Release\jcc\sources\jcc.o:jcc.cpp:(.text$_ZNK6JCCEnv10g
et_vm_envEv[JCCEnv::get_vm_env() const]+0xf): undefined reference to
`TlsGetValue@4'

build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x10):
undefined reference to `TlsAlloc@0'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x29):
undefined reference to `TlsSetValue@8'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x24d7):
undefined reference to `InitializeCriticalSection@4'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x254c):
undefined reference to `EnterCriticalSection@4'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x263a):
undefined reference to `LeaveCriticalSection@4'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x2677):
undefined reference to `LeaveCriticalSection@4'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x26f2):
undefined reference to `EnterCriticalSection@4'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text+0x27e5):
undefined reference to `LeaveCriticalSection@4'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text$_ZN4lock
D1Ev[lock::~lock()]+0x18): undefined reference to `LeaveCriticalSection@4'
build\temp.win32-2.6\Release\jcc\sources\jccenv.o:JCCEnv.cpp:(.text$_ZN4lock
D0Ev[lock::~lock()]+0x19): undefined reference to `LeaveCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
.c:(.text+0xa8): undefined reference to `LoadLibraryA@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
.c:(.text+0xc8): undefined reference to `GetProcAddress@8'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
.c:(.text+0xe5): undefined reference to `GetProcAddress@8'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlssup.o):tlssup
.c:(.text+0x15f): undefined reference to `FreeLibrary@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(pseudo-reloc.o):
pseudo-reloc.c:(.text+0x89): undefined reference to `VirtualQuery@12'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(pseudo-reloc.o):
pseudo-reloc.c:(.text+0xbe): undefined reference to `VirtualProtect@16'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(pseudo-reloc.o):
pseudo-reloc.c:(.text+0xfe): undefined reference to `VirtualProtect@16'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x20): undefined reference to `EnterCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x37): undefined reference to `TlsGetValue@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x41): undefined reference to `GetLastError@0'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x64): undefined reference to `LeaveCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0xc2): undefined reference to `DeleteCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0xf8): undefined reference to `InitializeCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x138): undefined reference to `EnterCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x167): undefined reference to `LeaveCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x18b): undefined reference to `LeaveCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x1e7): undefined reference to `EnterCriticalSection@4'
c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(tlsthrd.o):tlsth
rd.c:(.text+0x204): undefined reference to `LeaveCriticalSection@4'
collect2: ld returned 1 exit status
error: command 'g++' failed with exit status 1

> -----Original Message-----
> From: Bill Janssen [mailto:janssen@parc.com]
> Sent: Wednesday, December 01, 2010 10:19 PM
> To: pylucene-dev@lucene.apache.org
> Cc: janssen@parc.com
> Subject: Re: building PyLucene 3.0.2 on Win7/MinGW with Python 2.7
> 
> Andi Vajda <va...@apache.org> wrote:
> 
> > I believe MSVC 2008 == 9.0 but I could be wrong. I also seem to recall
> > that Python 2.7 requires that version. So you should also try Python
> > 2.6 on Win 7.
> 
> I asked about this on the mingw list, with the following result:
> 
> Charles Wilson <cw...@users.sourceforge.net> wrote:
> 
> > The official python.org win32 python26 distribution
> > uses the msvcr90.dll libc; anything compiled with mingw uses the
> > msvcrt.dll, and THAT may be the problem.
> >
> > See here:
> > http://jove.prohosting.com/iwave/ipython/issues.html
> > ...
> > There is a way to hack your mingw
> > installation to use the msvcr90.dll runtime, but I've never tried it
> > myself. See this wiki page:
> > http://www.mingw.org/wiki/HOWTO_Use_the_GCC_specs_file
> 
> I'll try that -- getting mingw to use the same C library that Python
> uses.  Looks like you can do an in-place update -- the pyMinGW toolkit
> provides a tool which does that.
> 
> Bill