'strlen' not declared

[PrimeCenter]

Perhaps I should post to the pymssql board but I will try here first.
Basically I am trying to get pymssql installed on a mac. It requires
cython. There are numerous build errors associated with cython and I
tried a simple one-liner to try and isolate the problem.

File test.pyx contains:
from stdlib cimport strlen

I then run...
cython -a test.pyx

Here is the output:
warning: /Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:0: 'stdlib'
is deprecated, use 'libc.stdlib'

Error converting Pyrex file to C:
------------------------------------------------------------
...
from stdlib cimport strlen
^
------------------------------------------------------------

/Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:0: 'strlen.pxd' not
found

Error converting Pyrex file to C:
------------------------------------------------------------
...
from stdlib cimport strlen
^
------------------------------------------------------------

/Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:20: Name 'strlen'
not declared in module 'stdlib'

I don't see strlen.pxd any where.

Any help appreciated.
Chris

[Matthew Brett]

Hi,

On Mon, Oct 11, 2010 at 10:43 PM, PrimeCenter <ch...@augmentedprime.com> wrote:
> Perhaps I should post to the pymssql board but I will try here first.
> Basically I am trying to get pymssql installed on a mac.  It requires
> cython.  There are numerous build errors associated with cython and I
> tried a simple one-liner to try and isolate the problem.
>
> File test.pyx contains:
> from stdlib cimport strlen
>
> I then run...
> cython -a test.pyx
>
> Here is the output:
> warning: /Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:0: 'stdlib'
> is deprecated, use 'libc.stdlib'

I think you want:

from libc.string cimport strlen

Best,

Matthew

[PrimeCenter]

Thanks Matthew. I made the change but it cannot find strlen.pxd. Is
this file supposed to be in the Cython distribution?

Output follows. Thanks.

Error converting Pyrex file to C:
------------------------------------------------------------
...

from libc.stdlib cimport strlen

^
------------------------------------------------------------

/Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:0: 'strlen.pxd' not
found

Error converting Pyrex file to C:
------------------------------------------------------------
...

from libc.stdlib cimport strlen
^
------------------------------------------------------------

/Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:25: Name 'strlen'
not declared in module 'libc.stdlib'

[Stefan Behnel]

PrimeCenter, 12.10.2010 19:11:

> Thanks Matthew. I made the change but it cannot find strlen.pxd. Is
> this file supposed to be in the Cython distribution?
>
> Output follows. Thanks.
>
> Error converting Pyrex file to C:
> ------------------------------------------------------------
> ...
> from libc.stdlib cimport strlen
> ^
> ------------------------------------------------------------
>
> /Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:0: 'strlen.pxd' not
> found

Well, you stripped the part of the original mail that said

from libc.string cimport strlen

Mind the "string" bit, named after string.h which defines it.

Stefan

[PrimeCenter]

Gosh, sorry Matthew. I've been distracted at present.

I switched to "libc.string" and it works just fine. I should be able
to use this knowledge to get pymssql working.

I appreciate your help very much!

Thanks,
Chris

[PrimeCenter]

I thought I would provide an update that after making a series of
required changes to pymssql cython files I was able to get a good
compilation on Mac OS X Snow Leopard. I can 'import pymssql' without
issue.

The changes required were several additional changes to references
such as above as well as an additional import for type 'bool' as:
from cpython cimport bool

Thanks,
Chris

[Samuel Bronson]

I hope you sent them a patch!

[Salman]

Matthew Brett <matthew.brett <at> gmail.com> writes:

>
> Hi,
>
> On Mon, Oct 11, 2010 at 10:43 PM, PrimeCenter <chris <at> augmentedprime.com>

Hi Matt,

I am getting the same error when compiling a.pyx file though I am correctly
importing from libc as under:

from libc.stdint cimport uint8_t, uint16_t, uint32_t, int8_t, int16_t, int32_t
from libc.stdlib cimport malloc,free

Errors that I get are as follows:

from libc.stdint cimport uint8_t, uint16_t, uint32_t, int8_t, int16_t, int32_t
^
------------------------------------------------------------

/home/me/test.pyx:6:0: 'uint8_t.pxd' not found

Error converting Pyrex file to C:
------------------------------------------------------------
...

# Wierd thing about cython: defines are hard to import so we have to track the
# sizes in two places
cdef int ETH_ALEN=6
cdef int PACKET_BUFFER = 2048

from libc.stdint cimport uint8_t, uint16_t, uint32_t, int8_t, int16_t, int32_t
^
------------------------------------------------------------
/home/me/test.pyx:6:25: Name 'uint8_t' not declared in module 'libc.stdint'

Any ideas??

[Stefan Behnel]

Salman, 11.04.2012 23:16:
> Matthew Brett writes:

>> On Mon, Oct 11, 2010 at 10:43 PM, PrimeCenter wrote:
>>> Perhaps I should post to the pymssql board but I will try here first.
>>> Basically I am trying to get pymssql installed on a mac. It requires
>>> cython. There are numerous build errors associated with cython and I
>>> tried a simple one-liner to try and isolate the problem.
>>>
>>> File test.pyx contains:
>>> from stdlib cimport strlen
>>>
>>> I then run...
>>> cython -a test.pyx
>>>
>>> Here is the output:
>>> warning: /Users/blank/Downloads/pymssql-1.9.908/test.pyx:1:0: 'stdlib'
>>> is deprecated, use 'libc.stdlib'
>>
>> I think you want:
>>
>> from libc.string cimport strlen
>

> I am getting the same error when compiling a.pyx file though I am correctly
> importing from libc as under:
>
> from libc.stdint cimport uint8_t, uint16_t, uint32_t, int8_t, int16_t, int32_t
> from libc.stdlib cimport malloc,free
>
> Errors that I get are as follows:
>
> from libc.stdint cimport uint8_t, uint16_t, uint32_t, int8_t, int16_t, int32_t
> ^
> ------------------------------------------------------------
>
> /home/me/test.pyx:6:0: 'uint8_t.pxd' not found
>
> Error converting Pyrex file to C:
> ------------------------------------------------------------
> ...
> # Wierd thing about cython: defines are hard to import so we have to track the
> # sizes in two places
> cdef int ETH_ALEN=6
> cdef int PACKET_BUFFER = 2048
>
> from libc.stdint cimport uint8_t, uint16_t, uint32_t, int8_t, int16_t, int32_t
> ^
> ------------------------------------------------------------
> /home/me/test.pyx:6:25: Name 'uint8_t' not declared in module 'libc.stdint'
>
> Any ideas??

The usual question at this point: what version of Cython are you using?
Look through the file Cython/Includes/libc/stdint.pxd to see if the
declaration is in there.

Stefan

[Stefan Behnel]

> # Wierd thing about cython: defines are hard to import so we have to track the
> # sizes in two places
> cdef int ETH_ALEN=6
> cdef int PACKET_BUFFER = 2048

BTW, does anyone know what this "defines are hard to import" is supposed to
mean? I can't remember a bug report about something like this...

Stefan

[Dag Sverre Seljebotn]

I think the OP just doesn't know about this trick:

cdef extern from "myheader.h":
cdef enum:
ETH_ALEN

Dag

[Vitja Makarov]

2012/4/12 Dag Sverre Seljebotn <d.s.se...@astro.uio.no>:

The hard thing is exporting enums into python space.

--
vitja.