Re: [Plplot-devel] New way of getting device info from dyndrivers

[<jc...@fe...>]

On Monday 10 February 2003 15:44, Rafael Laboissiere wrote:
| Thanks for your useful report on library loading, Joao.
|
| * Jo=E3o Cardoso <jc...@fe...> [2003-02-10 15:19]:
| > Back to the drivers.rc solution, Rafael.
|
| I will give it a try one of these days.

If dlopen() is called with RTLD_NOW instead of RTLD_LAZY in the program=20
that I attached in my last e-mail, it work's OK (and its output is=20
similar to drivers.db).

But libtool docs says that RTLD_LAZY is used by default, so we might=20
have a problem. However, a comment in libtool-1.4.3/libltdl/ltdl.c=20
seems to indicate that this is an issue in some platforms:

/* We may have to define LT_LAZY_OR_NOW in the command line if we
   find out it does not work in some platform. */

With the small program is also easier to check for memory leaks with=20
valgrind, and most of the leaks come from libdl.
tmpfile() also contributes a bit.

Joao

PS-Also usefull are some environmental variables used by ld.so:
> man ld.so=20
> LD_DEBUG=3Dhelp ./po