ctypes CDLL - which paths are searched?

[Helmut Jarausch]

Hi,

how can I specify the paths to be searched for a dynamic library
to be loaded by ctypes' CDLL class on a Linux system.

Do I have to set os.environment['LD_LIBRARY_PATH'] ?

Many thanks for a hint,
Helmut.

--
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany

 

[Thomas Heller]

Hi,

how can I specify the paths to be searched for a dynamic library
to be loaded by ctypes' CDLL class on a Linux system.

Do I have to set os.environment['LD_LIBRARY_PATH'] ?

ctypes passes the argument given to CDLL(path) straight to
the dlopen(3) call, so your system documentation should tell you.

Thomas

 

[Helmut Jarausch]

Hi,

how can I specify the paths to be searched for a dynamic library
to be loaded by ctypes' CDLL class on a Linux system.

Do I have to set os.environment['LD_LIBRARY_PATH'] ?

ctypes passes the argument given to CDLL(path) straight to
the dlopen(3) call, so your system documentation should tell you.

Thanks,

but then it's difficult to use CDLL. Setting
os.environ['LD_LIBRARY_PATH'] within the script which
calls CDLL is too late.
What other methods are possible rather than put an explicit
export LD_LIBRARY_PATH=...
before running the script, if I don't want to put the dynamic
library into a standard system library.

Many thanks,
Helmut.



--
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany

 

[Helmut Jarausch]

Hi,

how can I specify the paths to be searched for a dynamic library
to be loaded by ctypes' CDLL class on a Linux system.

Do I have to set os.environment['LD_LIBRARY_PATH'] ?

ctypes passes the argument given to CDLL(path) straight to
the dlopen(3) call, so your system documentation should tell you.

Thanks,

but then it's difficult to use CDLL. Setting
os.environ['LD_LIBRARY_PATH'] within the script which
calls CDLL is too late.
What other methods are possible rather than put an explicit
export LD_LIBRARY_PATH=...
before running the script, if I don't want to put the dynamic
library into a standard system library.

Many thanks,
Helmut.



--
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany

 

[Thomas Heller]

Hi,

how can I specify the paths to be searched for a dynamic library
to be loaded by ctypes' CDLL class on a Linux system.

Do I have to set os.environment['LD_LIBRARY_PATH'] ?

ctypes passes the argument given to CDLL(path) straight to
the dlopen(3) call, so your system documentation should tell you.

Thanks,

but then it's difficult to use CDLL. Setting
os.environ['LD_LIBRARY_PATH'] within the script which
calls CDLL is too late.
What other methods are possible rather than put an explicit
export LD_LIBRARY_PATH=...
before running the script, if I don't want to put the dynamic
library into a standard system library.

I guess you can also use an absolute pathname (but the dlopen(3)
manpage should tell you more. I'm not too familiar with linux).

Thomas