I have the following code that works (identbrl is not NULL and it
works ok when called) :
identbrl = lt_dlsym(library, "identbrl");
however if I add the following code :
identbrl = lt_dlsym(library, "identbrl");
strerror = lt_dlerror();
if (strerror)
{
Log(LOG_ERR, "%s", strerror);
return 0;
}
I get an "unknown error" message.
So lt_dlerror must be returning non-NULL while there is no error. But
its documentation says :
Function: {const char *}lt_dlerror (void)
Return a human readable string describing the most recent error that
occurred from any of libltdl's functions. Return NULL if no errors
have occurred since initialization or since it was last called.
I used lt_dlerror instead of checking if lt_dlsym returns a NULL value
because of a comment in the autobook :
http://sources.redhat.com/autobook/autobook/autobook_169.html#SEC169
run = (entrypoint *) lt_dlsym (module, "run");
/* In principle, run might legitimately be NULL, so
I don't use run == NULL as an error indicator
in general. */
errormsg = dlerrordup (errormsg);
if (errormsg != NULL)
{
errors = lt_dlclose (module);
module = NULL;
}
So how am I supposed to check if there is an error with lt_dlsym()? by
checking if lt_dlsym() is non-NULL or by checking if lt_dlerror() is
non-NULL or something else?
identbrl = lt_dlsym(library, "identbrl");
if (!identbrl)
{
strerror = lt_dlerror();
Log(LOG_ERR, "Driver symbol not found identbrl : %s", strerror);
return 0;
}
thanks in advance
--
Sébastien Sablé <[EMAIL PROTECTED]>
http://inova.snv.jussieu.fr/~sable/
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