Re: Problem with python extension install

Re: Problem with python extension install

[John Whitley]

Jason Tishler wrote:
> Actually, the link line is missing:
>
>     -L/usr/lib/python2.4/config
>

Thanks for the correction..  I figured that out a few minutes after I  
sent my last email.  8-)

> Does ZopeInterface use Distutils?  If so, then the above link option
> should be automatically added under Cygwin.

It does use distutils, and that's why I was confused.  I further  
noted that other packages (e.g., Twisted-2.0.1) had the same problem  
-- the distutils generated linker path is appearing as "-L.", causing  
any extension builds to break.  By manually replacing "-L." with "-L/ 
usr/lib/python2.4/config" in the link lines I was able to get these  
packages built.

This suggests a problem with distutils, but that's as far as I've had  
time to investigate.

Thanks,
John



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Re: Problem with python extension install

[Jason Tishler]

John,

On Fri, Jul 15, 2005 at 11:22:07AM -0700, John Whitley wrote:
> I'm running into an odd problem attempting to install the
> ZopeInterface package on Cygwin.
> 
> The relevant part of the build output is below.  The failure "cannot
> find -lpython2.4" appears to be merely because the link path (-L
> option) isn't being set correctly; the link line is missing the "-L/
> usr/lib/python2.4" option.

Actually, the link line is missing:

    -L/usr/lib/python2.4/config

Does ZopeInterface use Distutils?  If so, then the above link option
should be automatically added under Cygwin.  If not, then you will have
to make the build Cygwin-aware.

Jason

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Problem with python extension install

[John Whitley]

Hi all,

I'm running into an odd problem attempting to install the  
ZopeInterface package on Cygwin.

The relevant part of the build output is below.  The failure "cannot  
find -lpython2.4" appears to be merely because the link path (-L  
option) isn't being set correctly; the link line is missing the "-L/ 
usr/lib/python2.4" option.

I'm posting here in case any Cygwin-using Python experts can pass  
along pointers on triaging (or solving ;-) this problem.

Thanks!
John Whitley

P.S. Thanks to folks who responded to my recent rebaseall question.   
Alas, Google didn't bring up any of the recent
          discussion threads on that topic; my bad.

building 'zope.interface._zope_interface_coptimizations' extension
[...]
creating build/temp.cygwin-1.5.18-i686-2.4/Dependencies/ 
zope.interface-ZopeInterface-3.1.0b1/zope.interface
gcc -fno-strict-aliasing -DNDEBUG -g -O3 -Wall -Wstrict-prototypes - 
IDependencies/zope.interface-ZopeInterface-3.1.0b1/zope.interface -I/ 
usr/include/python2.4 -c Dependencies/zope.interface- 
ZopeInterface-3.1.0b1/zope.interface/_zope_interface_coptimizations.c  
-o build/temp.cygwin-1.5.18-i686-2.4/Dependencies/zope.interface- 
ZopeInterface-3.1.0b1/zope.interface/_zope_interface_coptimizations.o
gcc -shared -Wl,--enable-auto-image-base build/temp.cygwin-1.5.18- 
i686-2.4/Dependencies/zope.interface-ZopeInterface-3.1.0b1/ 
zope.interface/_zope_interface_coptimizations.o -L. -lpython2.4 -o  
build/lib.cygwin-1.5.18-i686-2.4/zope/interface/ 
_zope_interface_coptimizations.dll
/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld:  
cannot find -lpython2.4
collect2: ld returned 1 exit status
error: command 'gcc' failed with exit status 1


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