[dts] [PATCH V1] tests/example_build: optimize script

[Wenjie Li]

On some platforms, if intel-cmt-cat is installed by yum/apt etc, 
the intel-cmt-cat/lib is not at /root/intel-cmt-cat-master/lib and it is
unneccessary to export PQOS_INSTALL_PATH.

Signed-off-by: Wenjie Li <wenjiex.a.li at intel.com>
---
 tests/TestSuite_example_build.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/TestSuite_example_build.py b/tests/TestSuite_example_build.py
index f0bf0ee..a70e1b3 100644
--- a/tests/TestSuite_example_build.py
+++ b/tests/TestSuite_example_build.py
@@ -57,7 +57,9 @@ class TestExamplebuild(TestCase):
         """
         Verify example applications compile successfully
         """
-        self.dut.send_expect('export PQOS_INSTALL_PATH=/root/intel-cmt-cat-master/lib', '#')
+        out = self.dut.send_expect('ls /root/intel-cmt-cat-master/lib', '#')
+        if "No such file or directory" not in out:
+            self.dut.send_expect('export PQOS_INSTALL_PATH=/root/intel-cmt-cat-master/lib', '#')
         out = self.dut.build_dpdk_apps("./examples", '#')
         verify_info = ['error','Error','Stop','terminate','failed','No such file','no input files','not found','No rule']
         for failed_info in verify_info:
-- 
2.17.1