I had a project using libltdl from libtool 1.4.1 which worked quite
well... and then I switched to libtool 1.4.2.
Then my project started to core dump as soon as libltdl functions were
invoked.
I decided to wait since other people were experiencing trouble as
well. Then recently a new debian package of libtool appeared :
libtool (1.4.2-4) unstable; urgency=medium
* Applied patch from Roger Leigh <[EMAIL PROTECTED]> that fixes
libtoolize's AC_CONFIG_AUX_DIR support when using new style
`configure.ac'. Patch has been sent upstream. (Closes: #126374)
* Applied patch from Daniel Kobras <[EMAIL PROTECTED]> that fixes a
segmentation fault due to a missing error check. Patch has been sent
upstream. (Closes: #127083)
* Applied patch from Sebastian Rittau <[EMAIL PROTECTED]> that
corrects misnamed plugin modules on Tru64. Patch has been sent
upstream. (Closes: #126666)
* Applied patch from Bill Allombert <[EMAIL PROTECTED]> that fixes
incorrect assumption that ARM builds use glibc 2.1.1. Bug report sent
upstream. (Closes: #120515)
I decided to try this new version. Now my project does not core dump
any more, however it still does report some "unknown error" when I
call lt_dlsym.
So my question is : is libltdl from libtool 1.4.2 supposed to work at
all? and if yes, why would a project that used to work with 1.4.1 not
work anymore?
My code looks something like this :
int load_braille_driver(void)
{
const char* strerror;
int error;
lt_dlinit();
error = lt_dladdsearchdir(PKGLIBDIR);
if(error)
{
Log(LOG_ERR, "Cannot change search path : %s", lt_dlerror());
return 0;
}
library = lt_dlopenext(braille_libname);
if (library == NULL)
{
Log(LOG_ERR, "Cannot open braille driver library %s : %s", braille_libname,
lt_dlerror());
return 0;
}
Log(LOG_INFO, "Library %s loaded", braille_libname);
identbrl = lt_dlsym(library, "identbrl"); /* locate function from the shared library
*/
strerror = lt_dlerror();
if (strerror)
{
Log(LOG_ERR, "Driver symbol not found identbrl : %s", strerror);
return 0;
}
...
And it reports this error message :
Library libbraillebn loaded
Driver symbol not found identbrl : unknown error
It worked perfectly before and the only change is the switch to
libtool 1.4.2...
sable@incubus:~/tim/dev/braille/libbraille$ autoconf --version
autoconf (GNU Autoconf) 2.52
sable@incubus:~/tim/dev/braille/libbraille$ automake --version
automake (GNU automake) 1.5
sable@incubus:~/tim/dev/braille/libbraille$ libtool --version
ltmain.sh (GNU libtool) 1.4.2a (1.922.2.79 2001/11/28 21:50:31)
Thanks for any help
--
Sébastien Sablé <[EMAIL PROTECTED]>
http://inova.snv.jussieu.fr/~sable/
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