Re: [Plplot-devel] png driver no longer works for python

[<jca...@in...>]

On Saturday 24 November 2001 00:32, Alan W. Irwin wrote:
| With plplot tree freshly updated from CVS, I configure like I
| normally do, e.g.,
|
| ./configure --prefix=3D/usr/local/plplot --with-double
| --enable-dynamic-drivers --enable-java --enable-gnome > & !
| configure.out
|
| Then from tmp I executed
| ./pythondemos.py -dev png
| Unable to load driver: gd.drv.
| Reason: /usr/local/plplot/lib/drivers/gd.drv: undefined symbol:
| plP_setpxl Segmentation fault
|
| First, why should a test in tmp refer to some previously installed
| version in /usr/local/plplot?
| Second, when I removed /usr/local/plplot/* I got a new error
| message:
|
| ./pythondemos.py -dev png -o temp.png
| Unable to load driver: gd.drv.
| Reason: /usr/local/plplot/lib/drivers/gd.drv: cannot open shared
| object file: No such file or directory
|
| So somehow /usr/local/plplot is hardcoded in the python case.  With
| /usr/local/plplot removed, I have no trouble with the png driver
| for the x01c example, and the psc driver works both for the x01c
| and pythondemos.py examples.
|
| I am virtually positive I checked the png driver before when I was
| first testing pythondemos.py.  Since then, I have changed to
| python-2.1 and Joao has made some driver changes so I don't know
| which is causing the trouble. Joao, can you replicate this problem
| on your (presumably) python-1.5 system?

Not exactly:

jcard@rick:~/tmp/plplot/tmp > ./pythondemos.py -dev png -o po.png
Device not loaded!
tag=3Dpng, drvidx=3D4
Trying to load gd.drv on ./drivers/gd.drv
Trying to load at /usr/local/test/lib/drivers/gd.drv
Unable to load driver: gd.drv.
Reason: /usr/local/test/lib/drivers/gd.drv: cannot open shared object=20
file: No such file or directory
Segmentation fault

I have plcore modified to print diagnostics while trying to load=20
dynamic drivers, thus the more verbose output.

I'm using python-1.5.2, and most python demos fail:

jcard@rick:~/tmp/plplot/tmp > ./pythondemos.py -dev ps -o po.ps=20
Device not loaded!
tag=3Dpsm, drvidx=3D5
Trying to load ps.drv on ./drivers/ps.drv
Opened po.ps
Traceback (innermost last):
  File "./pythondemos.py", line 23, in ?
    import xw01
  File "/home/jcard/tmp/plplot/tmp/xw01.py", line 141, in ?
    main()
  File "/home/jcard/tmp/plplot/tmp/xw01.py", line 20, in main
    plot1(6., 1., 0., 0.)
  File "/home/jcard/tmp/plplot/tmp/xw01.py", line 63, in plot1
    plpoin(xs, ys, 9)
TypeError: Array can not be safely cast to required type

The above message happens for most, but not all, examples; e.g.,=20
xw06.py works OK. As for you, the C examples work OK:

jcard@rick:~/tmp/plplot/tmp > ./x01c -dev png -o po.png
Plplot library version: 5.0.4
Device not loaded!
tag=3Dpng, drvidx=3D4
Trying to load gd.drv on ./drivers/gd.drv
Opened po.png

So, I don't know what the problem is, as I never used python, and my=20
changes to the driver where only related with dynamic building, never=20
touching the code itself.

There is some configure problems with pyqt. I dont have it installed,=20
but it is build anyway! It looks like configure don't check for it.

Also, I have problems with "make" after the first sucesseful make,=20
i.e., the first make runs OK, but the second and next give the=20
following message:

> touch plline.c
> make

=2E...

Building Python module.
=20
echo 'pl plmodule.c plmodule2.c -I. -I/usr/include/python1.5=20
-I/usr/include/python1.5/Numeric -L.. -L. -lplplot -ltclmatrix=20
-ltk8.3 -ltcl8.3 -L/usr/X11R6/lib -lX11 -ldl -lm -Wl,-rpath=20
-Wl,/home/jcard/tmp/plplot/tmp' >> python_dynamic/Setup.in
cd python_dynamic ; make -s -f Makefile.pre.in boot ; make -s ; \
mv -f plmodule.so ..
mv: plmodule.so: No such file or directory
make: *** [plmodule.so] Error 1

Joao