[PATCH] buildtools: fix invalid symbols

[Mingjin Ye <mingjinx.ye@intel.com>]

ELF files generated by higher version compilers wrap multiple
symbols prefixed with "this_pmd_name".

This patch fixes the issue by filtering invalid symbols.

Bugzilla ID: 1466
Fixes: 6c4bf8f42432 ("buildtools: add Python pmdinfogen")
Cc: stable@dpdk.org

Signed-off-by: Mingjin Ye <mingjinx.ye@intel.com>
---
 buildtools/pmdinfogen.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/buildtools/pmdinfogen.py b/buildtools/pmdinfogen.py
index 2a44f17bda..6ea97caec7 100755
--- a/buildtools/pmdinfogen.py
+++ b/buildtools/pmdinfogen.py
@@ -200,7 +200,8 @@ def dump(self, file):
 def load_drivers(image):
     drivers = []
     for symbol in image.find_by_prefix("this_pmd_name"):
-        drivers.append(Driver.load(image, symbol))
+        if len(symbol.string_value) != 0:
+            drivers.append(Driver.load(image, symbol))
     return drivers
 
 
-- 
2.25.1