[PATCH v9 6/7] eal: export default plugin path to external tools

[Thomas Monjalon <thomas.monjalon@6wind.com>]

From: Neil Horman <nhorman@tuxdriver.com>

Export a symbol containing the string:
DPDK_PLUGIN_PATH="$(CONFIG_RTE_EAL_PMD_PATH)"

Where the latter half of the string is set at build time to a location from
which autoloaded DSO's will be found.  This string is used by dpdk-pmdinfo in
'plugin' mode, whereby a user can specify a DPDK installation directory (or
static binary), and scan the associated path (if found) for pmd DSO's and
report on their hardware support.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Panu Matilainen <pmatilai@redhat.com>
Acked-by: Remy Horton <remy.horton@intel.com>
---
 lib/librte_eal/common/eal_common_options.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 3efc90f..7e9f7b8 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -115,6 +115,10 @@ TAILQ_HEAD_INITIALIZER(solib_list);
 /* Default path of external loadable drivers */
 static const char *default_solib_dir = RTE_EAL_PMD_PATH;
 
+/* Stringified version of default solib path */
+static const char dpdk_solib_path[] __attribute__((used)) =
+"DPDK_PLUGIN_PATH=" RTE_EAL_PMD_PATH;
+
 static int master_lcore_parsed;
 static int mem_parsed;
 
-- 
2.7.0