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eal: do not try to load library from current directory

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When loading a library "libfoo.so" (depending on "libbar.so", located in an
entirely different folder), with a LD_LIBRARY_PATH=/path/to/libfoo.so", it
returns an error:

 EAL: ./libfoo.so: cannot open shared object file: No such file or directory

If the first dlopen() fails (here, because it can't find all dependencies),
the code requires for a second dlopen() that looks for "./libfoo.so". It
turns on pathname matching, which does not use LD_LIBRARY_PATH. As a result,
it fails because it cannot find "./libfoo.so".

The error message matches the error of the second dlopen(), not the first's.

Do not try to look for a different library ("./"-prefixed) than the one
provided in argument. Let the dynamic library management handle it, just
provide an appropriate LD_LIBRARY_PATH.

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
This commit is contained in:
Pascal Mazon 2014-04-15 15:50:22 +02:00 committed by Thomas Monjalon
parent 4f04db8b89
commit 894fd42e7f
1 changed files with 0 additions and 6 deletions
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6
lib/librte_eal/linuxapp/eal/eal.c
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@ -1054,12 +1054,6 @@ rte_eal_init(int argc, char **argv)
TAILQ_FOREACH(solib, &solib_list, next) {
RTE_LOG(INFO, EAL, "open shared lib %s\n", solib->name);
solib->lib_handle = dlopen(solib->name, RTLD_NOW);
if ((solib->lib_handle == NULL) && (solib->name[0] != '/')) {
/* relative path: try again with "./" prefix */
char sopath[PATH_MAX];
snprintf(sopath, sizeof(sopath), "./%s", solib->name);
solib->lib_handle = dlopen(sopath, RTLD_NOW);
}
if (solib->lib_handle == NULL)
RTE_LOG(WARNING, EAL, "%s\n", dlerror());
}