Numeric compiling problem under QNX 4.25

[ZMY]

Dear all,

I am a real newbie for both python and QNX, but I am still trying to
compile Numeric-24.2 under QNX4.25 with python 2.2. I got following
error message:
$ sudo python setup.py install
Password:
running install
....
building '_numpy' extension
skipping Src/_numpymodule.c (build/temp.qnx-O-PCI-2.2/_numpymodule.o
up-to-date)
skipping Src/arrayobject.c (build/temp.qnx-O-PCI-2.2/arrayobject.o up-
to-date)
skipping Src/ufuncobject.c (build/temp.qnx-O-PCI-2.2/ufuncobject.o up-
to-date)
ld build/temp.qnx-O-PCI-2.2/_numpymodule.o build/temp.qnx-O-PCI-2.2/
arrayobject.o build/temp.qnx-O-PCI-2.2/ufuncobject.o -o build/lib.qnx-
O-PCI-2.2/_numpy.so
unable to execute ld: No such file or directory
error: command 'ld' failed with exit status 1

I looked at directory /build/temp.qnx-O-PCI-2.2/ and found following
object files:

_numpymodule.o, arrayobject.o, ufuncobject.o

So it looks that ld got all files before linking them - or is it??

Thanks a lot for any suggestions,

- ZMY

[ZMY]

On Apr 3, 2:52 pm, Robert Kern <robert.k...@gm ail.comwrote:

ZMY wrote:

On Apr 3, 10:51 am, Robert Kern <robert.k...@gm ail.comwrote:

ZMY wrote:
Is "ld" part of make command? I am not familiar with compiling with
make in general.
No, it's the linker. I takes the object files (.o) which are generated by the
compiler (cc, I imagine) and links them together into the shared library (.so).
make is a program that can automate builds given instructions, but Numeric
doesn't use it, nor do most other Python packages.

>Most other extensions (including math, os, struct, cPickle) from
Python 2.2 works when I install python on QNX.
No, I was wondering if you could build any other third-party extension modules.
Did you install Python from source? When building extension modules, Python uses
whatever linker was used to build itself.

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto E

Dear Robert,

Looks like you are right. Here is what I got when I compile the
Python2.2 from source (or I believe so):

$ sudo make SHELL=/usr/local/bin/bash
Password:
case $MAKEFLAGS in \
*-s*) CC='cc' LDSHARED='ld' OPT='-DNDEBUG -O' ./python -E //6/openqnx/
Python-2.2/setup.py -q build;; \
*) CC='cc' LDSHARED='ld' OPT='-DNDEBUG -O' ./python -E //6/openqnx/
Python-2.2/setup.py build;; \
esac
running build
running build_ext
building 'regex' extension
skipping //6/openqnx/Python-2.2/Modules/regexmodule.c (build/temp.qnx-
O-PCI-2.2/regexmodule.o up-to-date)
skipping //6/openqnx/Python-2.2/Modules/regexpr.c (build/temp.qnx-O-
PCI-2.2/regexpr.o up-to-date)
ld build/temp.qnx-O-PCI-2.2/regexmodule.o build/temp.qnx-O-PCI-2.2/
regexpr.o -L/usr/local/lib -o build/lib.qnx-O-PCI-2.2/regex.so
unable to execute ld: No such file or directory
....

If there is no 'ld' linker, what should be used instead??

I don't know. I've never used QNX. It looks like the Python binaries were built
with a linker that you don't have on your system. Usually, you have to use the
same compiler/linker combination to build extension modules that you used to
build Python itself.

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco

Dear All,

I finally figured out how to install Numeric Python on QNX4. To my
understanding of a QNX programmer's lecture, the problem of QNX4 is
that it doesn't support dynamic linking, so the linker can't link the
new compiled object files with existing python binary. The new module
must be built together with python itself.

What I did was:

1) copy every file in /Lib, /Src, /Include from Numeric/ into the
corresponding directories in /openqnx/Python2.2/ (I put *object files
in /Object)

2) change Modules/Setup to include following (ranlib and arraytypes
don't work, but I got modules I need)

_numpy _numpymodule.c arrayobject.c ufuncobject.c
#ranlib ranlibmodule.c ranlib.c
umath umathmodule.c
multiarray multiarraymodul e.c
# arraytypes arraytypes.c
arrayfns arrayfnsmodule. c

3) install from source by make
Thanks a lot for all your help again!

[Robert Kern]

ZMY wrote:

I finally figured out how to install Numeric Python on QNX4. To my
understanding of a QNX programmer's lecture, the problem of QNX4 is
that it doesn't support dynamic linking, so the linker can't link the
new compiled object files with existing python binary. The new module
must be built together with python itself.

Ouch! Well, I'm glad you found a way to get going. If you have more problems,
please join us on numpy-discussion, where you will find more people who have
experience with Numeric than here. Just be sure to state up front that you need
to use Numeric because you are on Python 2.2 to hold off the inevitable, "you
should really migrate to numpy," spiel.

http://www.scipy.org/Mailing_Lists

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco