numpy-discussion

[Numpy-discussion] C Extension intp problem

[Nick F. <nv...@MI...>]

Dear all,

I had a working C extension, but after upgrading to a recent numpy  
from SVN, I can no longer compile it.  I've fixed the deprecation  
warnings, but can't get past this:

frgetvect.c:51: error: 'intp' undeclared (first use in this function)

Now, I'm quite confused since I thought that intp should be a global  
thing, not numpy related, and I believe I'm using the shipped Apple  
gcc version.

Version info:
nvf@whitedwarf:~/temp/v6r20/pyfrgetvect$ python -V
Python 2.4.1
nvf@whitedwarf:~/temp/v6r20/pyfrgetvect$ python -c "import numpy;  
print numpy.__version__"
1.1.2881
nvf@whitedwarf:~/temp/v6r20/pyfrgetvect$ gcc --version
powerpc-apple-darwin8-gcc-4.0.0 (GCC) 4.0.0 20041026 (Apple Computer,  
Inc. build 4061)

Can anyone help me?

Thanks,
Nick

Full build output:
nvf@whitedwarf:~/temp/v6r20/pyfrgetvect$ python setup.py build
running build
running build_ext
building 'frgetvect' extension
C compiler: gcc -fno-strict-aliasing -Wno-long-double -no-cpp-precomp  
-mno-fused-madd -fno-common -dynamic -DNDEBUG -g -O3 -Wall -Wstrict- 
prototypes

creating build
creating build/temp.darwin-8.7.0-Power_Macintosh-2.4
compile options: '-DMAJOR_VERSION=0 -DMINOR_VERSION=2 -I../src -I/ 
Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site- 
packages/numpy/core/include -I/Library/Frameworks/Python.framework/ 
Versions/2.4/include/python2.4 -c'
extra options: '-w'
gcc: frgetvect.c
frgetvect.c: In function 'frgetvect':
frgetvect.c:51: error: 'intp' undeclared (first use in this function)
frgetvect.c:51: error: (Each undeclared identifier is reported only once
frgetvect.c:51: error: for each function it appears in.)
frgetvect.c:51: error: parse error before "shape"
frgetvect.c:138: error: 'shape' undeclared (first use in this function)
frgetvect.c:138: error: parse error before "nData"
frgetvect.c: In function 'frgetvect':
frgetvect.c:51: error: 'intp' undeclared (first use in this function)
frgetvect.c:51: error: (Each undeclared identifier is reported only once
frgetvect.c:51: error: for each function it appears in.)
frgetvect.c:51: error: parse error before "shape"
frgetvect.c:138: error: 'shape' undeclared (first use in this function)
frgetvect.c:138: error: parse error before "nData"
error: Command "gcc -fno-strict-aliasing -Wno-long-double -no-cpp- 
precomp -mno-fused-madd -fno-common -dynamic -DNDEBUG -g -O3 -Wall - 
Wstrict-prototypes -DMAJOR_VERSION=0 -DMINOR_VERSION=2 -I../src -I/ 
Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site- 
packages/numpy/core/include -I/Library/Frameworks/Python.framework/ 
Versions/2.4/include/python2.4 -c frgetvect.c -o build/ 
temp.darwin-8.7.0-Power_Macintosh-2.4/frgetvect.o -w" failed with  
exit status 1

Re: [Numpy-discussion] C Extension intp problem

[David M. C. <co...@ph...>]

On Fri, 28 Jul 2006 16:25:00 -0400
Nick Fotopoulos <nv...@MI...> wrote:

> Dear all,
> 
> I had a working C extension, but after upgrading to a recent numpy  
> from SVN, I can no longer compile it.  I've fixed the deprecation  
> warnings, but can't get past this:
> 
> frgetvect.c:51: error: 'intp' undeclared (first use in this function)
> 
> Now, I'm quite confused since I thought that intp should be a global  
> thing, not numpy related, and I believe I'm using the shipped Apple  
> gcc version.

To avoid namespace clashes with other libraries, we've switched to adding a
unique prefix 'npy_' to types (and NPY_ to #defines). You can either change
your code to use 'npy_intp', or add

#include "numpy/noprefix.h"

to the top.

-- 
|>|\/|<
/--------------------------------------------------------------------------\
|David M. Cooke                      http://arbutus.physics.mcmaster.ca/dmc/
|co...@ph...

Re: [Numpy-discussion] C Extension intp problem

[Nick F. <nv...@MI...>]

On Jul 28, 2006, at 4:47 PM, David M. Cooke wrote:

> On Fri, 28 Jul 2006 16:25:00 -0400
> Nick Fotopoulos <nv...@MI...> wrote:
>
>> Dear all,
>>
>> I had a working C extension, but after upgrading to a recent numpy
>> from SVN, I can no longer compile it.  I've fixed the deprecation
>> warnings, but can't get past this:
>>
>> frgetvect.c:51: error: 'intp' undeclared (first use in this function)
>>
>> Now, I'm quite confused since I thought that intp should be a global
>> thing, not numpy related, and I believe I'm using the shipped Apple
>> gcc version.
>
> To avoid namespace clashes with other libraries, we've switched to  
> adding a
> unique prefix 'npy_' to types (and NPY_ to #defines). You can  
> either change
> your code to use 'npy_intp', or add
>
> #include "numpy/noprefix.h"
>
> to the top.
>

Aha!  I was under the impression that intp was a native C thing.   
Thanks for clarifying.

Take care,
Nick